init: create front/back apps

backend/app.js

@@ -0,0 +1,54 @@
+
+const express = require('express');
+const app = express()
+const cors = require("cors");
+const http = require('http'); //create new http
+const socket = require("socket.io");
+
+
+const server = http.createServer(app);
+
+const io = require("socket.io")(server, {
+  cors: {
+    origin: "http://localhost:3000"  //client endpoint and port
+  }
+});
+
+const PORT = process.env.PORT || 5000;
+
+app.use(cors());// cors 
+
+
+
+//main page
+app.get('/', (req, res) => {
+  res.send('here will be login page')
+})
+
+//login page
+app.get('/chat', (req, res) => {
+  res.send('Chat page')
+})
+
+//on connection listen messages and send back text and user name in chat
+io.on("connection", (socket) => {
+    socket.on("message", (data) => {
+        console.log(data.message); 
+        io.emit('chat_message',{
+            message: data.message,
+            name: data.name
+        })
+      });
+      
+  console.log(`user with ID :${socket.id} , connected to socket`); 
+});
+
+
+
+
+
+//server.listen(PORT);
+
+server.listen(PORT, () => {
+  console.log(`Server started. Port: ${PORT}`)
+})

backend/node_modules/.bin/mime

@@ -0,0 +1 @@
+../mime/cli.js

backend/node_modules/.package-lock.json

@@ -0,0 +1,709 @@
+{
+  "name": "backend",
+  "version": "1.0.0",
+  "lockfileVersion": 2,
+  "requires": true,
+  "packages": {
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+      "version": "1.2.11",
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+    },
+    "node_modules/@types/cookie": {
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+    },
+    "node_modules/@types/cors": {
+      "version": "2.8.12",
+      "resolved": "https://registry.npmjs.org/@types/cors/-/cors-2.8.12.tgz",
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+    },
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+    },
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+      "version": "1.3.7",
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+      "dependencies": {
+        "mime-types": "~2.1.24",
+        "negotiator": "0.6.2"
+      },
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
+    "node_modules/array-flatten": {
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+      }
+    },
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+      }
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+      }
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+      "integrity": "sha1-4wOogrNCzD7oylE6eZmXNNqzriw="
+    },
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+        "object-assign": "^4",
+        "vary": "^1"
+      },
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+      }
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+}

backend/node_modules/@types/component-emitter/LICENSE

@@ -0,0 +1,21 @@
+    MIT License
+
+    Copyright (c) Microsoft Corporation.
+
+    Permission is hereby granted, free of charge, to any person obtaining a copy
+    of this software and associated documentation files (the "Software"), to deal
+    in the Software without restriction, including without limitation the rights
+    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+    copies of the Software, and to permit persons to whom the Software is
+    furnished to do so, subject to the following conditions:
+
+    The above copyright notice and this permission notice shall be included in all
+    copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+    SOFTWARE

backend/node_modules/@types/component-emitter/README.md

@@ -0,0 +1,45 @@
+# Installation
+> `npm install --save @types/component-emitter`
+
+# Summary
+This package contains type definitions for component-emitter (https://www.npmjs.com/package/component-emitter).
+
+# Details
+Files were exported from https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/component-emitter.
+## [index.d.ts](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/component-emitter/index.d.ts)
+````ts
+// Type definitions for component-emitter v1.2.1
+// Project: https://www.npmjs.com/package/component-emitter
+// Definitions by: Peter Snider <https://github.com/psnider>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+// TypeScript Version: 2.2
+
+interface Emitter<Event = string> {
+    on(event: Event, listener: Function): Emitter;
+    once(event: Event, listener: Function): Emitter;
+    off(event?: Event, listener?: Function): Emitter;
+    emit(event: Event, ...args: any[]): Emitter;
+    listeners(event: Event): Function[];
+    hasListeners(event: Event): boolean;
+    removeListener(event?: Event, listener?: Function): Emitter;
+    removeEventListener(event?: Event, listener?: Function): Emitter;
+    removeAllListeners(event?: Event): Emitter;
+}
+
+declare const Emitter: {
+    (obj?: object): Emitter;
+    new (obj?: object): Emitter;
+};
+
+export = Emitter;
+
+````
+
+### Additional Details
+ * Last updated: Thu, 14 Oct 2021 19:01:31 GMT
+ * Dependencies: none
+ * Global values: none
+
+# Credits
+These definitions were written by [Peter Snider](https://github.com/psnider).

backend/node_modules/@types/component-emitter/index.d.ts

@@ -0,0 +1,25 @@
+// Type definitions for component-emitter v1.2.1
+// Project: https://www.npmjs.com/package/component-emitter
+// Definitions by: Peter Snider <https://github.com/psnider>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+// TypeScript Version: 2.2
+
+interface Emitter<Event = string> {
+    on(event: Event, listener: Function): Emitter;
+    once(event: Event, listener: Function): Emitter;
+    off(event?: Event, listener?: Function): Emitter;
+    emit(event: Event, ...args: any[]): Emitter;
+    listeners(event: Event): Function[];
+    hasListeners(event: Event): boolean;
+    removeListener(event?: Event, listener?: Function): Emitter;
+    removeEventListener(event?: Event, listener?: Function): Emitter;
+    removeAllListeners(event?: Event): Emitter;
+}
+
+declare const Emitter: {
+    (obj?: object): Emitter;
+    new (obj?: object): Emitter;
+};
+
+export = Emitter;

backend/node_modules/@types/component-emitter/package.json

@@ -0,0 +1,25 @@
+{
+    "name": "@types/component-emitter",
+    "version": "1.2.11",
+    "description": "TypeScript definitions for component-emitter",
+    "homepage": "https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/component-emitter",
+    "license": "MIT",
+    "contributors": [
+        {
+            "name": "Peter Snider",
+            "url": "https://github.com/psnider",
+            "githubUsername": "psnider"
+        }
+    ],
+    "main": "",
+    "types": "index.d.ts",
+    "repository": {
+        "type": "git",
+        "url": "https://github.com/DefinitelyTyped/DefinitelyTyped.git",
+        "directory": "types/component-emitter"
+    },
+    "scripts": {},
+    "dependencies": {},
+    "typesPublisherContentHash": "d86d217b63101effae1228ebbfe02ac682ee4eb8abd6fc0dcc9948a4b6fdf572",
+    "typeScriptVersion": "3.7"
+}

backend/node_modules/@types/cookie/LICENSE

@@ -0,0 +1,21 @@
+    MIT License
+
+    Copyright (c) Microsoft Corporation.
+
+    Permission is hereby granted, free of charge, to any person obtaining a copy
+    of this software and associated documentation files (the "Software"), to deal
+    in the Software without restriction, including without limitation the rights
+    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+    copies of the Software, and to permit persons to whom the Software is
+    furnished to do so, subject to the following conditions:
+
+    The above copyright notice and this permission notice shall be included in all
+    copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+    SOFTWARE

backend/node_modules/@types/cookie/README.md

@@ -0,0 +1,16 @@
+# Installation
+> `npm install --save @types/cookie`
+
+# Summary
+This package contains type definitions for cookie (https://github.com/jshttp/cookie).
+
+# Details
+Files were exported from https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/cookie.
+
+### Additional Details
+ * Last updated: Tue, 06 Jul 2021 20:32:30 GMT
+ * Dependencies: none
+ * Global values: none
+
+# Credits
+These definitions were written by [Pine Mizune](https://github.com/pine), and [Piotr Błażejewicz](https://github.com/peterblazejewicz).

backend/node_modules/@types/cookie/index.d.ts

@@ -0,0 +1,135 @@
+// Type definitions for cookie 0.4
+// Project: https://github.com/jshttp/cookie
+// Definitions by: Pine Mizune <https://github.com/pine>
+//                 Piotr Błażejewicz <https://github.com/peterblazejewicz>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+/**
+ * Basic HTTP cookie parser and serializer for HTTP servers.
+ */
+
+/**
+ * Additional serialization options
+ */
+export interface CookieSerializeOptions {
+    /**
+     * Specifies the value for the {@link https://tools.ietf.org/html/rfc6265#section-5.2.3|Domain Set-Cookie attribute}. By default, no
+     * domain is set, and most clients will consider the cookie to apply to only
+     * the current domain.
+     */
+    domain?: string | undefined;
+
+    /**
+     * Specifies a function that will be used to encode a cookie's value. Since
+     * value of a cookie has a limited character set (and must be a simple
+     * string), this function can be used to encode a value into a string suited
+     * for a cookie's value.
+     *
+     * The default function is the global `encodeURIComponent`, which will
+     * encode a JavaScript string into UTF-8 byte sequences and then URL-encode
+     * any that fall outside of the cookie range.
+     */
+    encode?(value: string): string;
+
+    /**
+     * Specifies the `Date` object to be the value for the {@link https://tools.ietf.org/html/rfc6265#section-5.2.1|`Expires` `Set-Cookie` attribute}. By default,
+     * no expiration is set, and most clients will consider this a "non-persistent cookie" and will delete
+     * it on a condition like exiting a web browser application.
+     *
+     * *Note* the {@link https://tools.ietf.org/html/rfc6265#section-5.3|cookie storage model specification}
+     * states that if both `expires` and `maxAge` are set, then `maxAge` takes precedence, but it is
+     * possible not all clients by obey this, so if both are set, they should
+     * point to the same date and time.
+     */
+    expires?: Date | undefined;
+    /**
+     * Specifies the boolean value for the {@link https://tools.ietf.org/html/rfc6265#section-5.2.6|`HttpOnly` `Set-Cookie` attribute}.
+     * When truthy, the `HttpOnly` attribute is set, otherwise it is not. By
+     * default, the `HttpOnly` attribute is not set.
+     *
+     * *Note* be careful when setting this to true, as compliant clients will
+     * not allow client-side JavaScript to see the cookie in `document.cookie`.
+     */
+    httpOnly?: boolean | undefined;
+    /**
+     * Specifies the number (in seconds) to be the value for the `Max-Age`
+     * `Set-Cookie` attribute. The given number will be converted to an integer
+     * by rounding down. By default, no maximum age is set.
+     *
+     * *Note* the {@link https://tools.ietf.org/html/rfc6265#section-5.3|cookie storage model specification}
+     * states that if both `expires` and `maxAge` are set, then `maxAge` takes precedence, but it is
+     * possible not all clients by obey this, so if both are set, they should
+     * point to the same date and time.
+     */
+    maxAge?: number | undefined;
+    /**
+     * Specifies the value for the {@link https://tools.ietf.org/html/rfc6265#section-5.2.4|`Path` `Set-Cookie` attribute}.
+     * By default, the path is considered the "default path".
+     */
+    path?: string | undefined;
+    /**
+     * Specifies the boolean or string to be the value for the {@link https://tools.ietf.org/html/draft-ietf-httpbis-rfc6265bis-03#section-4.1.2.7|`SameSite` `Set-Cookie` attribute}.
+     *
+     * - `true` will set the `SameSite` attribute to `Strict` for strict same
+     * site enforcement.
+     * - `false` will not set the `SameSite` attribute.
+     * - `'lax'` will set the `SameSite` attribute to Lax for lax same site
+     * enforcement.
+     * - `'strict'` will set the `SameSite` attribute to Strict for strict same
+     * site enforcement.
+     *  - `'none'` will set the SameSite attribute to None for an explicit
+     *  cross-site cookie.
+     *
+     * More information about the different enforcement levels can be found in {@link https://tools.ietf.org/html/draft-ietf-httpbis-rfc6265bis-03#section-4.1.2.7|the specification}.
+     *
+     * *note* This is an attribute that has not yet been fully standardized, and may change in the future. This also means many clients may ignore this attribute until they understand it.
+     */
+    sameSite?: true | false | 'lax' | 'strict' | 'none' | undefined;
+    /**
+     * Specifies the boolean value for the {@link https://tools.ietf.org/html/rfc6265#section-5.2.5|`Secure` `Set-Cookie` attribute}. When truthy, the
+     * `Secure` attribute is set, otherwise it is not. By default, the `Secure` attribute is not set.
+     *
+     * *Note* be careful when setting this to `true`, as compliant clients will
+     * not send the cookie back to the server in the future if the browser does
+     * not have an HTTPS connection.
+     */
+    secure?: boolean | undefined;
+}
+
+/**
+ * Additional parsing options
+ */
+export interface CookieParseOptions {
+    /**
+     * Specifies a function that will be used to decode a cookie's value. Since
+     * the value of a cookie has a limited character set (and must be a simple
+     * string), this function can be used to decode a previously-encoded cookie
+     * value into a JavaScript string or other object.
+     *
+     * The default function is the global `decodeURIComponent`, which will decode
+     * any URL-encoded sequences into their byte representations.
+     *
+     * *Note* if an error is thrown from this function, the original, non-decoded
+     * cookie value will be returned as the cookie's value.
+     */
+    decode?(value: string): string;
+}
+
+/**
+ * Parse an HTTP Cookie header string and returning an object of all cookie
+ * name-value pairs.
+ *
+ * @param str the string representing a `Cookie` header value
+ * @param [options] object containing parsing options
+ */
+export function parse(str: string, options?: CookieParseOptions): { [key: string]: string };
+
+/**
+ * Serialize a cookie name-value pair into a `Set-Cookie` header string.
+ *
+ * @param name the name for the cookie
+ * @param value value to set the cookie to
+ * @param [options] object containing serialization options
+ * @throws {TypeError} when `maxAge` options is invalid
+ */
+export function serialize(name: string, value: string, options?: CookieSerializeOptions): string;

backend/node_modules/@types/cookie/package.json

@@ -0,0 +1,30 @@
+{
+    "name": "@types/cookie",
+    "version": "0.4.1",
+    "description": "TypeScript definitions for cookie",
+    "homepage": "https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/cookie",
+    "license": "MIT",
+    "contributors": [
+        {
+            "name": "Pine Mizune",
+            "url": "https://github.com/pine",
+            "githubUsername": "pine"
+        },
+        {
+            "name": "Piotr Błażejewicz",
+            "url": "https://github.com/peterblazejewicz",
+            "githubUsername": "peterblazejewicz"
+        }
+    ],
+    "main": "",
+    "types": "index.d.ts",
+    "repository": {
+        "type": "git",
+        "url": "https://github.com/DefinitelyTyped/DefinitelyTyped.git",
+        "directory": "types/cookie"
+    },
+    "scripts": {},
+    "dependencies": {},
+    "typesPublisherContentHash": "7d4a6dd505c896319459ae131b5fa8fc0a2ed25552db53dac87946119bb21559",
+    "typeScriptVersion": "3.6"
+}

backend/node_modules/@types/cors/LICENSE

@@ -0,0 +1,21 @@
+    MIT License
+
+    Copyright (c) Microsoft Corporation.
+
+    Permission is hereby granted, free of charge, to any person obtaining a copy
+    of this software and associated documentation files (the "Software"), to deal
+    in the Software without restriction, including without limitation the rights
+    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+    copies of the Software, and to permit persons to whom the Software is
+    furnished to do so, subject to the following conditions:
+
+    The above copyright notice and this permission notice shall be included in all
+    copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+    SOFTWARE

backend/node_modules/@types/cors/README.md

@@ -0,0 +1,78 @@
+# Installation
+> `npm install --save @types/cors`
+
+# Summary
+This package contains type definitions for cors (https://github.com/expressjs/cors/).
+
+# Details
+Files were exported from https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/cors.
+## [index.d.ts](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/cors/index.d.ts)
+````ts
+// Type definitions for cors 2.8
+// Project: https://github.com/expressjs/cors/
+// Definitions by: Alan Plum <https://github.com/pluma>
+//                 Gaurav Sharma <https://github.com/gtpan77>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 2.3
+
+import { IncomingHttpHeaders } from 'http';
+
+type StaticOrigin = boolean | string | RegExp | (boolean | string | RegExp)[];
+
+type CustomOrigin = (requestOrigin: string | undefined, callback: (err: Error | null, origin?: StaticOrigin) => void) => void;
+
+declare namespace e {
+    interface CorsRequest {
+        method?: string | undefined;
+        headers: IncomingHttpHeaders;
+    }
+    interface CorsOptions {
+        /**
+         * @default '*''
+         */
+        origin?: StaticOrigin | CustomOrigin | undefined;
+        /**
+         * @default 'GET,HEAD,PUT,PATCH,POST,DELETE'
+         */
+        methods?: string | string[] | undefined;
+        allowedHeaders?: string | string[] | undefined;
+        exposedHeaders?: string | string[] | undefined;
+        credentials?: boolean | undefined;
+        maxAge?: number | undefined;
+        /**
+         * @default false
+         */
+        preflightContinue?: boolean | undefined;
+        /**
+         * @default 204
+         */
+        optionsSuccessStatus?: number | undefined;
+    }
+    type CorsOptionsDelegate<T extends CorsRequest = CorsRequest> = (
+        req: T,
+        callback: (err: Error | null, options?: CorsOptions) => void,
+    ) => void;
+}
+
+declare function e<T extends e.CorsRequest = e.CorsRequest>(
+    options?: e.CorsOptions | e.CorsOptionsDelegate<T>,
+): (
+    req: T,
+    res: {
+        statusCode?: number | undefined;
+        setHeader(key: string, value: string): any;
+        end(): any;
+    },
+    next: (err?: any) => any,
+) => void;
+export = e;
+
+````
+
+### Additional Details
+ * Last updated: Fri, 09 Jul 2021 07:31:29 GMT
+ * Dependencies: none
+ * Global values: none
+
+# Credits
+These definitions were written by [Alan Plum](https://github.com/pluma), and [Gaurav Sharma](https://github.com/gtpan77).

backend/node_modules/@types/cors/index.d.ts

@@ -0,0 +1,58 @@
+// Type definitions for cors 2.8
+// Project: https://github.com/expressjs/cors/
+// Definitions by: Alan Plum <https://github.com/pluma>
+//                 Gaurav Sharma <https://github.com/gtpan77>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 2.3
+
+import { IncomingHttpHeaders } from 'http';
+
+type StaticOrigin = boolean | string | RegExp | (boolean | string | RegExp)[];
+
+type CustomOrigin = (requestOrigin: string | undefined, callback: (err: Error | null, origin?: StaticOrigin) => void) => void;
+
+declare namespace e {
+    interface CorsRequest {
+        method?: string | undefined;
+        headers: IncomingHttpHeaders;
+    }
+    interface CorsOptions {
+        /**
+         * @default '*''
+         */
+        origin?: StaticOrigin | CustomOrigin | undefined;
+        /**
+         * @default 'GET,HEAD,PUT,PATCH,POST,DELETE'
+         */
+        methods?: string | string[] | undefined;
+        allowedHeaders?: string | string[] | undefined;
+        exposedHeaders?: string | string[] | undefined;
+        credentials?: boolean | undefined;
+        maxAge?: number | undefined;
+        /**
+         * @default false
+         */
+        preflightContinue?: boolean | undefined;
+        /**
+         * @default 204
+         */
+        optionsSuccessStatus?: number | undefined;
+    }
+    type CorsOptionsDelegate<T extends CorsRequest = CorsRequest> = (
+        req: T,
+        callback: (err: Error | null, options?: CorsOptions) => void,
+    ) => void;
+}
+
+declare function e<T extends e.CorsRequest = e.CorsRequest>(
+    options?: e.CorsOptions | e.CorsOptionsDelegate<T>,
+): (
+    req: T,
+    res: {
+        statusCode?: number | undefined;
+        setHeader(key: string, value: string): any;
+        end(): any;
+    },
+    next: (err?: any) => any,
+) => void;
+export = e;

backend/node_modules/@types/cors/package.json

@@ -0,0 +1,30 @@
+{
+    "name": "@types/cors",
+    "version": "2.8.12",
+    "description": "TypeScript definitions for cors",
+    "homepage": "https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/cors",
+    "license": "MIT",
+    "contributors": [
+        {
+            "name": "Alan Plum",
+            "url": "https://github.com/pluma",
+            "githubUsername": "pluma"
+        },
+        {
+            "name": "Gaurav Sharma",
+            "url": "https://github.com/gtpan77",
+            "githubUsername": "gtpan77"
+        }
+    ],
+    "main": "",
+    "types": "index.d.ts",
+    "repository": {
+        "type": "git",
+        "url": "https://github.com/DefinitelyTyped/DefinitelyTyped.git",
+        "directory": "types/cors"
+    },
+    "scripts": {},
+    "dependencies": {},
+    "typesPublisherContentHash": "53ea51a6543d58d3c1b9035a9c361d8f06d7be01973be2895820b2fb7ad9563a",
+    "typeScriptVersion": "3.6"
+}

backend/node_modules/@types/node/LICENSE

@@ -0,0 +1,21 @@
+    MIT License
+
+    Copyright (c) Microsoft Corporation.
+
+    Permission is hereby granted, free of charge, to any person obtaining a copy
+    of this software and associated documentation files (the "Software"), to deal
+    in the Software without restriction, including without limitation the rights
+    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+    copies of the Software, and to permit persons to whom the Software is
+    furnished to do so, subject to the following conditions:
+
+    The above copyright notice and this permission notice shall be included in all
+    copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+    SOFTWARE

backend/node_modules/@types/node/assert.d.ts

@@ -0,0 +1,912 @@
+/**
+ * The `assert` module provides a set of assertion functions for verifying
+ * invariants.
+ * @see [source](https://github.com/nodejs/node/blob/v17.0.0/lib/assert.js)
+ */
+declare module 'assert' {
+    /**
+     * An alias of {@link ok}.
+     * @since v0.5.9
+     * @param value The input that is checked for being truthy.
+     */
+    function assert(value: unknown, message?: string | Error): asserts value;
+    namespace assert {
+        /**
+         * Indicates the failure of an assertion. All errors thrown by the `assert` module
+         * will be instances of the `AssertionError` class.
+         */
+        class AssertionError extends Error {
+            actual: unknown;
+            expected: unknown;
+            operator: string;
+            generatedMessage: boolean;
+            code: 'ERR_ASSERTION';
+            constructor(options?: {
+                /** If provided, the error message is set to this value. */
+                message?: string | undefined;
+                /** The `actual` property on the error instance. */
+                actual?: unknown | undefined;
+                /** The `expected` property on the error instance. */
+                expected?: unknown | undefined;
+                /** The `operator` property on the error instance. */
+                operator?: string | undefined;
+                /** If provided, the generated stack trace omits frames before this function. */
+                // tslint:disable-next-line:ban-types
+                stackStartFn?: Function | undefined;
+            });
+        }
+        /**
+         * This feature is currently experimental and behavior might still change.
+         * @since v14.2.0, v12.19.0
+         * @experimental
+         */
+        class CallTracker {
+            /**
+             * The wrapper function is expected to be called exactly `exact` times. If the
+             * function has not been called exactly `exact` times when `tracker.verify()` is called, then `tracker.verify()` will throw an
+             * error.
+             *
+             * ```js
+             * import assert from 'assert';
+             *
+             * // Creates call tracker.
+             * const tracker = new assert.CallTracker();
+             *
+             * function func() {}
+             *
+             * // Returns a function that wraps func() that must be called exact times
+             * // before tracker.verify().
+             * const callsfunc = tracker.calls(func);
+             * ```
+             * @since v14.2.0, v12.19.0
+             * @param [fn='A no-op function']
+             * @param [exact=1]
+             * @return that wraps `fn`.
+             */
+            calls(exact?: number): () => void;
+            calls<Func extends (...args: any[]) => any>(fn?: Func, exact?: number): Func;
+            /**
+             * The arrays contains information about the expected and actual number of calls of
+             * the functions that have not been called the expected number of times.
+             *
+             * ```js
+             * import assert from 'assert';
+             *
+             * // Creates call tracker.
+             * const tracker = new assert.CallTracker();
+             *
+             * function func() {}
+             *
+             * function foo() {}
+             *
+             * // Returns a function that wraps func() that must be called exact times
+             * // before tracker.verify().
+             * const callsfunc = tracker.calls(func, 2);
+             *
+             * // Returns an array containing information on callsfunc()
+             * tracker.report();
+             * // [
+             * //  {
+             * //    message: 'Expected the func function to be executed 2 time(s) but was
+             * //    executed 0 time(s).',
+             * //    actual: 0,
+             * //    expected: 2,
+             * //    operator: 'func',
+             * //    stack: stack trace
+             * //  }
+             * // ]
+             * ```
+             * @since v14.2.0, v12.19.0
+             * @return of objects containing information about the wrapper functions returned by `calls`.
+             */
+            report(): CallTrackerReportInformation[];
+            /**
+             * Iterates through the list of functions passed to `tracker.calls()` and will throw an error for functions that
+             * have not been called the expected number of times.
+             *
+             * ```js
+             * import assert from 'assert';
+             *
+             * // Creates call tracker.
+             * const tracker = new assert.CallTracker();
+             *
+             * function func() {}
+             *
+             * // Returns a function that wraps func() that must be called exact times
+             * // before tracker.verify().
+             * const callsfunc = tracker.calls(func, 2);
+             *
+             * callsfunc();
+             *
+             * // Will throw an error since callsfunc() was only called once.
+             * tracker.verify();
+             * ```
+             * @since v14.2.0, v12.19.0
+             */
+            verify(): void;
+        }
+        interface CallTrackerReportInformation {
+            message: string;
+            /** The actual number of times the function was called. */
+            actual: number;
+            /** The number of times the function was expected to be called. */
+            expected: number;
+            /** The name of the function that is wrapped. */
+            operator: string;
+            /** A stack trace of the function. */
+            stack: object;
+        }
+        type AssertPredicate = RegExp | (new () => object) | ((thrown: unknown) => boolean) | object | Error;
+        /**
+         * Throws an `AssertionError` with the provided error message or a default
+         * error message. If the `message` parameter is an instance of an `Error` then
+         * it will be thrown instead of the `AssertionError`.
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * assert.fail();
+         * // AssertionError [ERR_ASSERTION]: Failed
+         *
+         * assert.fail('boom');
+         * // AssertionError [ERR_ASSERTION]: boom
+         *
+         * assert.fail(new TypeError('need array'));
+         * // TypeError: need array
+         * ```
+         *
+         * Using `assert.fail()` with more than two arguments is possible but deprecated.
+         * See below for further details.
+         * @since v0.1.21
+         * @param [message='Failed']
+         */
+        function fail(message?: string | Error): never;
+        /** @deprecated since v10.0.0 - use fail([message]) or other assert functions instead. */
+        function fail(
+            actual: unknown,
+            expected: unknown,
+            message?: string | Error,
+            operator?: string,
+            // tslint:disable-next-line:ban-types
+            stackStartFn?: Function
+        ): never;
+        /**
+         * Tests if `value` is truthy. It is equivalent to`assert.equal(!!value, true, message)`.
+         *
+         * If `value` is not truthy, an `AssertionError` is thrown with a `message`property set equal to the value of the `message` parameter. If the `message`parameter is `undefined`, a default
+         * error message is assigned. If the `message`parameter is an instance of an `Error` then it will be thrown instead of the`AssertionError`.
+         * If no arguments are passed in at all `message` will be set to the string:`` 'No value argument passed to `assert.ok()`' ``.
+         *
+         * Be aware that in the `repl` the error message will be different to the one
+         * thrown in a file! See below for further details.
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * assert.ok(true);
+         * // OK
+         * assert.ok(1);
+         * // OK
+         *
+         * assert.ok();
+         * // AssertionError: No value argument passed to `assert.ok()`
+         *
+         * assert.ok(false, 'it\'s false');
+         * // AssertionError: it's false
+         *
+         * // In the repl:
+         * assert.ok(typeof 123 === 'string');
+         * // AssertionError: false == true
+         *
+         * // In a file (e.g. test.js):
+         * assert.ok(typeof 123 === 'string');
+         * // AssertionError: The expression evaluated to a falsy value:
+         * //
+         * //   assert.ok(typeof 123 === 'string')
+         *
+         * assert.ok(false);
+         * // AssertionError: The expression evaluated to a falsy value:
+         * //
+         * //   assert.ok(false)
+         *
+         * assert.ok(0);
+         * // AssertionError: The expression evaluated to a falsy value:
+         * //
+         * //   assert.ok(0)
+         * ```
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * // Using `assert()` works the same:
+         * assert(0);
+         * // AssertionError: The expression evaluated to a falsy value:
+         * //
+         * //   assert(0)
+         * ```
+         * @since v0.1.21
+         */
+        function ok(value: unknown, message?: string | Error): asserts value;
+        /**
+         * **Strict assertion mode**
+         *
+         * An alias of {@link strictEqual}.
+         *
+         * **Legacy assertion mode**
+         *
+         * > Stability: 3 - Legacy: Use {@link strictEqual} instead.
+         *
+         * Tests shallow, coercive equality between the `actual` and `expected` parameters
+         * using the [Abstract Equality Comparison](https://tc39.github.io/ecma262/#sec-abstract-equality-comparison) ( `==` ). `NaN` is special handled
+         * and treated as being identical in case both sides are `NaN`.
+         *
+         * ```js
+         * import assert from 'assert';
+         *
+         * assert.equal(1, 1);
+         * // OK, 1 == 1
+         * assert.equal(1, '1');
+         * // OK, 1 == '1'
+         * assert.equal(NaN, NaN);
+         * // OK
+         *
+         * assert.equal(1, 2);
+         * // AssertionError: 1 == 2
+         * assert.equal({ a: { b: 1 } }, { a: { b: 1 } });
+         * // AssertionError: { a: { b: 1 } } == { a: { b: 1 } }
+         * ```
+         *
+         * If the values are not equal, an `AssertionError` is thrown with a `message`property set equal to the value of the `message` parameter. If the `message`parameter is undefined, a default
+         * error message is assigned. If the `message`parameter is an instance of an `Error` then it will be thrown instead of the`AssertionError`.
+         * @since v0.1.21
+         */
+        function equal(actual: unknown, expected: unknown, message?: string | Error): void;
+        /**
+         * **Strict assertion mode**
+         *
+         * An alias of {@link notStrictEqual}.
+         *
+         * **Legacy assertion mode**
+         *
+         * > Stability: 3 - Legacy: Use {@link notStrictEqual} instead.
+         *
+         * Tests shallow, coercive inequality with the [Abstract Equality Comparison](https://tc39.github.io/ecma262/#sec-abstract-equality-comparison)(`!=` ). `NaN` is special handled and treated as
+         * being identical in case both
+         * sides are `NaN`.
+         *
+         * ```js
+         * import assert from 'assert';
+         *
+         * assert.notEqual(1, 2);
+         * // OK
+         *
+         * assert.notEqual(1, 1);
+         * // AssertionError: 1 != 1
+         *
+         * assert.notEqual(1, '1');
+         * // AssertionError: 1 != '1'
+         * ```
+         *
+         * If the values are equal, an `AssertionError` is thrown with a `message`property set equal to the value of the `message` parameter. If the `message`parameter is undefined, a default error
+         * message is assigned. If the `message`parameter is an instance of an `Error` then it will be thrown instead of the`AssertionError`.
+         * @since v0.1.21
+         */
+        function notEqual(actual: unknown, expected: unknown, message?: string | Error): void;
+        /**
+         * **Strict assertion mode**
+         *
+         * An alias of {@link deepStrictEqual}.
+         *
+         * **Legacy assertion mode**
+         *
+         * > Stability: 3 - Legacy: Use {@link deepStrictEqual} instead.
+         *
+         * Tests for deep equality between the `actual` and `expected` parameters. Consider
+         * using {@link deepStrictEqual} instead. {@link deepEqual} can have
+         * surprising results.
+         *
+         * _Deep equality_ means that the enumerable "own" properties of child objects
+         * are also recursively evaluated by the following rules.
+         * @since v0.1.21
+         */
+        function deepEqual(actual: unknown, expected: unknown, message?: string | Error): void;
+        /**
+         * **Strict assertion mode**
+         *
+         * An alias of {@link notDeepStrictEqual}.
+         *
+         * **Legacy assertion mode**
+         *
+         * > Stability: 3 - Legacy: Use {@link notDeepStrictEqual} instead.
+         *
+         * Tests for any deep inequality. Opposite of {@link deepEqual}.
+         *
+         * ```js
+         * import assert from 'assert';
+         *
+         * const obj1 = {
+         *   a: {
+         *     b: 1
+         *   }
+         * };
+         * const obj2 = {
+         *   a: {
+         *     b: 2
+         *   }
+         * };
+         * const obj3 = {
+         *   a: {
+         *     b: 1
+         *   }
+         * };
+         * const obj4 = Object.create(obj1);
+         *
+         * assert.notDeepEqual(obj1, obj1);
+         * // AssertionError: { a: { b: 1 } } notDeepEqual { a: { b: 1 } }
+         *
+         * assert.notDeepEqual(obj1, obj2);
+         * // OK
+         *
+         * assert.notDeepEqual(obj1, obj3);
+         * // AssertionError: { a: { b: 1 } } notDeepEqual { a: { b: 1 } }
+         *
+         * assert.notDeepEqual(obj1, obj4);
+         * // OK
+         * ```
+         *
+         * If the values are deeply equal, an `AssertionError` is thrown with a`message` property set equal to the value of the `message` parameter. If the`message` parameter is undefined, a default
+         * error message is assigned. If the`message` parameter is an instance of an `Error` then it will be thrown
+         * instead of the `AssertionError`.
+         * @since v0.1.21
+         */
+        function notDeepEqual(actual: unknown, expected: unknown, message?: string | Error): void;
+        /**
+         * Tests strict equality between the `actual` and `expected` parameters as
+         * determined by the [SameValue Comparison](https://tc39.github.io/ecma262/#sec-samevalue).
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * assert.strictEqual(1, 2);
+         * // AssertionError [ERR_ASSERTION]: Expected inputs to be strictly equal:
+         * //
+         * // 1 !== 2
+         *
+         * assert.strictEqual(1, 1);
+         * // OK
+         *
+         * assert.strictEqual('Hello foobar', 'Hello World!');
+         * // AssertionError [ERR_ASSERTION]: Expected inputs to be strictly equal:
+         * // + actual - expected
+         * //
+         * // + 'Hello foobar'
+         * // - 'Hello World!'
+         * //          ^
+         *
+         * const apples = 1;
+         * const oranges = 2;
+         * assert.strictEqual(apples, oranges, `apples ${apples} !== oranges ${oranges}`);
+         * // AssertionError [ERR_ASSERTION]: apples 1 !== oranges 2
+         *
+         * assert.strictEqual(1, '1', new TypeError('Inputs are not identical'));
+         * // TypeError: Inputs are not identical
+         * ```
+         *
+         * If the values are not strictly equal, an `AssertionError` is thrown with a`message` property set equal to the value of the `message` parameter. If the`message` parameter is undefined, a
+         * default error message is assigned. If the`message` parameter is an instance of an `Error` then it will be thrown
+         * instead of the `AssertionError`.
+         * @since v0.1.21
+         */
+        function strictEqual<T>(actual: unknown, expected: T, message?: string | Error): asserts actual is T;
+        /**
+         * Tests strict inequality between the `actual` and `expected` parameters as
+         * determined by the [SameValue Comparison](https://tc39.github.io/ecma262/#sec-samevalue).
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * assert.notStrictEqual(1, 2);
+         * // OK
+         *
+         * assert.notStrictEqual(1, 1);
+         * // AssertionError [ERR_ASSERTION]: Expected "actual" to be strictly unequal to:
+         * //
+         * // 1
+         *
+         * assert.notStrictEqual(1, '1');
+         * // OK
+         * ```
+         *
+         * If the values are strictly equal, an `AssertionError` is thrown with a`message` property set equal to the value of the `message` parameter. If the`message` parameter is undefined, a
+         * default error message is assigned. If the`message` parameter is an instance of an `Error` then it will be thrown
+         * instead of the `AssertionError`.
+         * @since v0.1.21
+         */
+        function notStrictEqual(actual: unknown, expected: unknown, message?: string | Error): void;
+        /**
+         * Tests for deep equality between the `actual` and `expected` parameters.
+         * "Deep" equality means that the enumerable "own" properties of child objects
+         * are recursively evaluated also by the following rules.
+         * @since v1.2.0
+         */
+        function deepStrictEqual<T>(actual: unknown, expected: T, message?: string | Error): asserts actual is T;
+        /**
+         * Tests for deep strict inequality. Opposite of {@link deepStrictEqual}.
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * assert.notDeepStrictEqual({ a: 1 }, { a: '1' });
+         * // OK
+         * ```
+         *
+         * If the values are deeply and strictly equal, an `AssertionError` is thrown
+         * with a `message` property set equal to the value of the `message` parameter. If
+         * the `message` parameter is undefined, a default error message is assigned. If
+         * the `message` parameter is an instance of an `Error` then it will be thrown
+         * instead of the `AssertionError`.
+         * @since v1.2.0
+         */
+        function notDeepStrictEqual(actual: unknown, expected: unknown, message?: string | Error): void;
+        /**
+         * Expects the function `fn` to throw an error.
+         *
+         * If specified, `error` can be a [`Class`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Classes),
+         * [`RegExp`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions), a validation function,
+         * a validation object where each property will be tested for strict deep equality,
+         * or an instance of error where each property will be tested for strict deep
+         * equality including the non-enumerable `message` and `name` properties. When
+         * using an object, it is also possible to use a regular expression, when
+         * validating against a string property. See below for examples.
+         *
+         * If specified, `message` will be appended to the message provided by the`AssertionError` if the `fn` call fails to throw or in case the error validation
+         * fails.
+         *
+         * Custom validation object/error instance:
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * const err = new TypeError('Wrong value');
+         * err.code = 404;
+         * err.foo = 'bar';
+         * err.info = {
+         *   nested: true,
+         *   baz: 'text'
+         * };
+         * err.reg = /abc/i;
+         *
+         * assert.throws(
+         *   () => {
+         *     throw err;
+         *   },
+         *   {
+         *     name: 'TypeError',
+         *     message: 'Wrong value',
+         *     info: {
+         *       nested: true,
+         *       baz: 'text'
+         *     }
+         *     // Only properties on the validation object will be tested for.
+         *     // Using nested objects requires all properties to be present. Otherwise
+         *     // the validation is going to fail.
+         *   }
+         * );
+         *
+         * // Using regular expressions to validate error properties:
+         * throws(
+         *   () => {
+         *     throw err;
+         *   },
+         *   {
+         *     // The `name` and `message` properties are strings and using regular
+         *     // expressions on those will match against the string. If they fail, an
+         *     // error is thrown.
+         *     name: /^TypeError$/,
+         *     message: /Wrong/,
+         *     foo: 'bar',
+         *     info: {
+         *       nested: true,
+         *       // It is not possible to use regular expressions for nested properties!
+         *       baz: 'text'
+         *     },
+         *     // The `reg` property contains a regular expression and only if the
+         *     // validation object contains an identical regular expression, it is going
+         *     // to pass.
+         *     reg: /abc/i
+         *   }
+         * );
+         *
+         * // Fails due to the different `message` and `name` properties:
+         * throws(
+         *   () => {
+         *     const otherErr = new Error('Not found');
+         *     // Copy all enumerable properties from `err` to `otherErr`.
+         *     for (const [key, value] of Object.entries(err)) {
+         *       otherErr[key] = value;
+         *     }
+         *     throw otherErr;
+         *   },
+         *   // The error's `message` and `name` properties will also be checked when using
+         *   // an error as validation object.
+         *   err
+         * );
+         * ```
+         *
+         * Validate instanceof using constructor:
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * assert.throws(
+         *   () => {
+         *     throw new Error('Wrong value');
+         *   },
+         *   Error
+         * );
+         * ```
+         *
+         * Validate error message using [`RegExp`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions):
+         *
+         * Using a regular expression runs `.toString` on the error object, and will
+         * therefore also include the error name.
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * assert.throws(
+         *   () => {
+         *     throw new Error('Wrong value');
+         *   },
+         *   /^Error: Wrong value$/
+         * );
+         * ```
+         *
+         * Custom error validation:
+         *
+         * The function must return `true` to indicate all internal validations passed.
+         * It will otherwise fail with an `AssertionError`.
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * assert.throws(
+         *   () => {
+         *     throw new Error('Wrong value');
+         *   },
+         *   (err) => {
+         *     assert(err instanceof Error);
+         *     assert(/value/.test(err));
+         *     // Avoid returning anything from validation functions besides `true`.
+         *     // Otherwise, it's not clear what part of the validation failed. Instead,
+         *     // throw an error about the specific validation that failed (as done in this
+         *     // example) and add as much helpful debugging information to that error as
+         *     // possible.
+         *     return true;
+         *   },
+         *   'unexpected error'
+         * );
+         * ```
+         *
+         * `error` cannot be a string. If a string is provided as the second
+         * argument, then `error` is assumed to be omitted and the string will be used for`message` instead. This can lead to easy-to-miss mistakes. Using the same
+         * message as the thrown error message is going to result in an`ERR_AMBIGUOUS_ARGUMENT` error. Please read the example below carefully if using
+         * a string as the second argument gets considered:
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * function throwingFirst() {
+         *   throw new Error('First');
+         * }
+         *
+         * function throwingSecond() {
+         *   throw new Error('Second');
+         * }
+         *
+         * function notThrowing() {}
+         *
+         * // The second argument is a string and the input function threw an Error.
+         * // The first case will not throw as it does not match for the error message
+         * // thrown by the input function!
+         * assert.throws(throwingFirst, 'Second');
+         * // In the next example the message has no benefit over the message from the
+         * // error and since it is not clear if the user intended to actually match
+         * // against the error message, Node.js throws an `ERR_AMBIGUOUS_ARGUMENT` error.
+         * assert.throws(throwingSecond, 'Second');
+         * // TypeError [ERR_AMBIGUOUS_ARGUMENT]
+         *
+         * // The string is only used (as message) in case the function does not throw:
+         * assert.throws(notThrowing, 'Second');
+         * // AssertionError [ERR_ASSERTION]: Missing expected exception: Second
+         *
+         * // If it was intended to match for the error message do this instead:
+         * // It does not throw because the error messages match.
+         * assert.throws(throwingSecond, /Second$/);
+         *
+         * // If the error message does not match, an AssertionError is thrown.
+         * assert.throws(throwingFirst, /Second$/);
+         * // AssertionError [ERR_ASSERTION]
+         * ```
+         *
+         * Due to the confusing error-prone notation, avoid a string as the second
+         * argument.
+         * @since v0.1.21
+         */
+        function throws(block: () => unknown, message?: string | Error): void;
+        function throws(block: () => unknown, error: AssertPredicate, message?: string | Error): void;
+        /**
+         * Asserts that the function `fn` does not throw an error.
+         *
+         * Using `assert.doesNotThrow()` is actually not useful because there
+         * is no benefit in catching an error and then rethrowing it. Instead, consider
+         * adding a comment next to the specific code path that should not throw and keep
+         * error messages as expressive as possible.
+         *
+         * When `assert.doesNotThrow()` is called, it will immediately call the `fn`function.
+         *
+         * If an error is thrown and it is the same type as that specified by the `error`parameter, then an `AssertionError` is thrown. If the error is of a
+         * different type, or if the `error` parameter is undefined, the error is
+         * propagated back to the caller.
+         *
+         * If specified, `error` can be a [`Class`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Classes),
+         * [`RegExp`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions) or a validation
+         * function. See {@link throws} for more details.
+         *
+         * The following, for instance, will throw the `TypeError` because there is no
+         * matching error type in the assertion:
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * assert.doesNotThrow(
+         *   () => {
+         *     throw new TypeError('Wrong value');
+         *   },
+         *   SyntaxError
+         * );
+         * ```
+         *
+         * However, the following will result in an `AssertionError` with the message
+         * 'Got unwanted exception...':
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * assert.doesNotThrow(
+         *   () => {
+         *     throw new TypeError('Wrong value');
+         *   },
+         *   TypeError
+         * );
+         * ```
+         *
+         * If an `AssertionError` is thrown and a value is provided for the `message`parameter, the value of `message` will be appended to the `AssertionError` message:
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * assert.doesNotThrow(
+         *   () => {
+         *     throw new TypeError('Wrong value');
+         *   },
+         *   /Wrong value/,
+         *   'Whoops'
+         * );
+         * // Throws: AssertionError: Got unwanted exception: Whoops
+         * ```
+         * @since v0.1.21
+         */
+        function doesNotThrow(block: () => unknown, message?: string | Error): void;
+        function doesNotThrow(block: () => unknown, error: AssertPredicate, message?: string | Error): void;
+        /**
+         * Throws `value` if `value` is not `undefined` or `null`. This is useful when
+         * testing the `error` argument in callbacks. The stack trace contains all frames
+         * from the error passed to `ifError()` including the potential new frames for`ifError()` itself.
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * assert.ifError(null);
+         * // OK
+         * assert.ifError(0);
+         * // AssertionError [ERR_ASSERTION]: ifError got unwanted exception: 0
+         * assert.ifError('error');
+         * // AssertionError [ERR_ASSERTION]: ifError got unwanted exception: 'error'
+         * assert.ifError(new Error());
+         * // AssertionError [ERR_ASSERTION]: ifError got unwanted exception: Error
+         *
+         * // Create some random error frames.
+         * let err;
+         * (function errorFrame() {
+         *   err = new Error('test error');
+         * })();
+         *
+         * (function ifErrorFrame() {
+         *   assert.ifError(err);
+         * })();
+         * // AssertionError [ERR_ASSERTION]: ifError got unwanted exception: test error
+         * //     at ifErrorFrame
+         * //     at errorFrame
+         * ```
+         * @since v0.1.97
+         */
+        function ifError(value: unknown): asserts value is null | undefined;
+        /**
+         * Awaits the `asyncFn` promise or, if `asyncFn` is a function, immediately
+         * calls the function and awaits the returned promise to complete. It will then
+         * check that the promise is rejected.
+         *
+         * If `asyncFn` is a function and it throws an error synchronously,`assert.rejects()` will return a rejected `Promise` with that error. If the
+         * function does not return a promise, `assert.rejects()` will return a rejected`Promise` with an `ERR_INVALID_RETURN_VALUE` error. In both cases the error
+         * handler is skipped.
+         *
+         * Besides the async nature to await the completion behaves identically to {@link throws}.
+         *
+         * If specified, `error` can be a [`Class`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Classes),
+         * [`RegExp`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions), a validation function,
+         * an object where each property will be tested for, or an instance of error where
+         * each property will be tested for including the non-enumerable `message` and`name` properties.
+         *
+         * If specified, `message` will be the message provided by the `AssertionError` if the `asyncFn` fails to reject.
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * await assert.rejects(
+         *   async () => {
+         *     throw new TypeError('Wrong value');
+         *   },
+         *   {
+         *     name: 'TypeError',
+         *     message: 'Wrong value'
+         *   }
+         * );
+         * ```
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * await assert.rejects(
+         *   async () => {
+         *     throw new TypeError('Wrong value');
+         *   },
+         *   (err) => {
+         *     assert.strictEqual(err.name, 'TypeError');
+         *     assert.strictEqual(err.message, 'Wrong value');
+         *     return true;
+         *   }
+         * );
+         * ```
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * assert.rejects(
+         *   Promise.reject(new Error('Wrong value')),
+         *   Error
+         * ).then(() => {
+         *   // ...
+         * });
+         * ```
+         *
+         * `error` cannot be a string. If a string is provided as the second
+         * argument, then `error` is assumed to be omitted and the string will be used for`message` instead. This can lead to easy-to-miss mistakes. Please read the
+         * example in {@link throws} carefully if using a string as the second
+         * argument gets considered.
+         * @since v10.0.0
+         */
+        function rejects(block: (() => Promise<unknown>) | Promise<unknown>, message?: string | Error): Promise<void>;
+        function rejects(block: (() => Promise<unknown>) | Promise<unknown>, error: AssertPredicate, message?: string | Error): Promise<void>;
+        /**
+         * Awaits the `asyncFn` promise or, if `asyncFn` is a function, immediately
+         * calls the function and awaits the returned promise to complete. It will then
+         * check that the promise is not rejected.
+         *
+         * If `asyncFn` is a function and it throws an error synchronously,`assert.doesNotReject()` will return a rejected `Promise` with that error. If
+         * the function does not return a promise, `assert.doesNotReject()` will return a
+         * rejected `Promise` with an `ERR_INVALID_RETURN_VALUE` error. In both cases
+         * the error handler is skipped.
+         *
+         * Using `assert.doesNotReject()` is actually not useful because there is little
+         * benefit in catching a rejection and then rejecting it again. Instead, consider
+         * adding a comment next to the specific code path that should not reject and keep
+         * error messages as expressive as possible.
+         *
+         * If specified, `error` can be a [`Class`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Classes),
+         * [`RegExp`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions) or a validation
+         * function. See {@link throws} for more details.
+         *
+         * Besides the async nature to await the completion behaves identically to {@link doesNotThrow}.
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * await assert.doesNotReject(
+         *   async () => {
+         *     throw new TypeError('Wrong value');
+         *   },
+         *   SyntaxError
+         * );
+         * ```
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * assert.doesNotReject(Promise.reject(new TypeError('Wrong value')))
+         *   .then(() => {
+         *     // ...
+         *   });
+         * ```
+         * @since v10.0.0
+         */
+        function doesNotReject(block: (() => Promise<unknown>) | Promise<unknown>, message?: string | Error): Promise<void>;
+        function doesNotReject(block: (() => Promise<unknown>) | Promise<unknown>, error: AssertPredicate, message?: string | Error): Promise<void>;
+        /**
+         * Expects the `string` input to match the regular expression.
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * assert.match('I will fail', /pass/);
+         * // AssertionError [ERR_ASSERTION]: The input did not match the regular ...
+         *
+         * assert.match(123, /pass/);
+         * // AssertionError [ERR_ASSERTION]: The "string" argument must be of type string.
+         *
+         * assert.match('I will pass', /pass/);
+         * // OK
+         * ```
+         *
+         * If the values do not match, or if the `string` argument is of another type than`string`, an `AssertionError` is thrown with a `message` property set equal
+         * to the value of the `message` parameter. If the `message` parameter is
+         * undefined, a default error message is assigned. If the `message` parameter is an
+         * instance of an `Error` then it will be thrown instead of the `AssertionError`.
+         * @since v13.6.0, v12.16.0
+         */
+        function match(value: string, regExp: RegExp, message?: string | Error): void;
+        /**
+         * Expects the `string` input not to match the regular expression.
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * assert.doesNotMatch('I will fail', /fail/);
+         * // AssertionError [ERR_ASSERTION]: The input was expected to not match the ...
+         *
+         * assert.doesNotMatch(123, /pass/);
+         * // AssertionError [ERR_ASSERTION]: The "string" argument must be of type string.
+         *
+         * assert.doesNotMatch('I will pass', /different/);
+         * // OK
+         * ```
+         *
+         * If the values do match, or if the `string` argument is of another type than`string`, an `AssertionError` is thrown with a `message` property set equal
+         * to the value of the `message` parameter. If the `message` parameter is
+         * undefined, a default error message is assigned. If the `message` parameter is an
+         * instance of an `Error` then it will be thrown instead of the `AssertionError`.
+         * @since v13.6.0, v12.16.0
+         */
+        function doesNotMatch(value: string, regExp: RegExp, message?: string | Error): void;
+        const strict: Omit<typeof assert, 'equal' | 'notEqual' | 'deepEqual' | 'notDeepEqual' | 'ok' | 'strictEqual' | 'deepStrictEqual' | 'ifError' | 'strict'> & {
+            (value: unknown, message?: string | Error): asserts value;
+            equal: typeof strictEqual;
+            notEqual: typeof notStrictEqual;
+            deepEqual: typeof deepStrictEqual;
+            notDeepEqual: typeof notDeepStrictEqual;
+            // Mapped types and assertion functions are incompatible?
+            // TS2775: Assertions require every name in the call target
+            // to be declared with an explicit type annotation.
+            ok: typeof ok;
+            strictEqual: typeof strictEqual;
+            deepStrictEqual: typeof deepStrictEqual;
+            ifError: typeof ifError;
+            strict: typeof strict;
+        };
+    }
+    export = assert;
+}
+declare module 'node:assert' {
+    import assert = require('assert');
+    export = assert;
+}

backend/node_modules/@types/node/assert/strict.d.ts

@@ -0,0 +1,8 @@
+declare module 'assert/strict' {
+    import { strict } from 'node:assert';
+    export = strict;
+}
+declare module 'node:assert/strict' {
+    import { strict } from 'node:assert';
+    export = strict;
+}

backend/node_modules/@types/node/async_hooks.d.ts

@@ -0,0 +1,501 @@
+/**
+ * The `async_hooks` module provides an API to track asynchronous resources. It
+ * can be accessed using:
+ *
+ * ```js
+ * import async_hooks from 'async_hooks';
+ * ```
+ * @experimental
+ * @see [source](https://github.com/nodejs/node/blob/v17.0.0/lib/async_hooks.js)
+ */
+declare module 'async_hooks' {
+    /**
+     * ```js
+     * import { executionAsyncId } from 'async_hooks';
+     *
+     * console.log(executionAsyncId());  // 1 - bootstrap
+     * fs.open(path, 'r', (err, fd) => {
+     *   console.log(executionAsyncId());  // 6 - open()
+     * });
+     * ```
+     *
+     * The ID returned from `executionAsyncId()` is related to execution timing, not
+     * causality (which is covered by `triggerAsyncId()`):
+     *
+     * ```js
+     * const server = net.createServer((conn) => {
+     *   // Returns the ID of the server, not of the new connection, because the
+     *   // callback runs in the execution scope of the server's MakeCallback().
+     *   async_hooks.executionAsyncId();
+     *
+     * }).listen(port, () => {
+     *   // Returns the ID of a TickObject (process.nextTick()) because all
+     *   // callbacks passed to .listen() are wrapped in a nextTick().
+     *   async_hooks.executionAsyncId();
+     * });
+     * ```
+     *
+     * Promise contexts may not get precise `executionAsyncIds` by default.
+     * See the section on `promise execution tracking`.
+     * @since v8.1.0
+     * @return The `asyncId` of the current execution context. Useful to track when something calls.
+     */
+    function executionAsyncId(): number;
+    /**
+     * Resource objects returned by `executionAsyncResource()` are most often internal
+     * Node.js handle objects with undocumented APIs. Using any functions or properties
+     * on the object is likely to crash your application and should be avoided.
+     *
+     * Using `executionAsyncResource()` in the top-level execution context will
+     * return an empty object as there is no handle or request object to use,
+     * but having an object representing the top-level can be helpful.
+     *
+     * ```js
+     * import { open } from 'fs';
+     * import { executionAsyncId, executionAsyncResource } from 'async_hooks';
+     *
+     * console.log(executionAsyncId(), executionAsyncResource());  // 1 {}
+     * open(new URL(import.meta.url), 'r', (err, fd) => {
+     *   console.log(executionAsyncId(), executionAsyncResource());  // 7 FSReqWrap
+     * });
+     * ```
+     *
+     * This can be used to implement continuation local storage without the
+     * use of a tracking `Map` to store the metadata:
+     *
+     * ```js
+     * import { createServer } from 'http';
+     * import {
+     *   executionAsyncId,
+     *   executionAsyncResource,
+     *   createHook
+     * } from 'async_hooks';
+     * const sym = Symbol('state'); // Private symbol to avoid pollution
+     *
+     * createHook({
+     *   init(asyncId, type, triggerAsyncId, resource) {
+     *     const cr = executionAsyncResource();
+     *     if (cr) {
+     *       resource[sym] = cr[sym];
+     *     }
+     *   }
+     * }).enable();
+     *
+     * const server = createServer((req, res) => {
+     *   executionAsyncResource()[sym] = { state: req.url };
+     *   setTimeout(function() {
+     *     res.end(JSON.stringify(executionAsyncResource()[sym]));
+     *   }, 100);
+     * }).listen(3000);
+     * ```
+     * @since v13.9.0, v12.17.0
+     * @return The resource representing the current execution. Useful to store data within the resource.
+     */
+    function executionAsyncResource(): object;
+    /**
+     * ```js
+     * const server = net.createServer((conn) => {
+     *   // The resource that caused (or triggered) this callback to be called
+     *   // was that of the new connection. Thus the return value of triggerAsyncId()
+     *   // is the asyncId of "conn".
+     *   async_hooks.triggerAsyncId();
+     *
+     * }).listen(port, () => {
+     *   // Even though all callbacks passed to .listen() are wrapped in a nextTick()
+     *   // the callback itself exists because the call to the server's .listen()
+     *   // was made. So the return value would be the ID of the server.
+     *   async_hooks.triggerAsyncId();
+     * });
+     * ```
+     *
+     * Promise contexts may not get valid `triggerAsyncId`s by default. See
+     * the section on `promise execution tracking`.
+     * @return The ID of the resource responsible for calling the callback that is currently being executed.
+     */
+    function triggerAsyncId(): number;
+    interface HookCallbacks {
+        /**
+         * Called when a class is constructed that has the possibility to emit an asynchronous event.
+         * @param asyncId a unique ID for the async resource
+         * @param type the type of the async resource
+         * @param triggerAsyncId the unique ID of the async resource in whose execution context this async resource was created
+         * @param resource reference to the resource representing the async operation, needs to be released during destroy
+         */
+        init?(asyncId: number, type: string, triggerAsyncId: number, resource: object): void;
+        /**
+         * When an asynchronous operation is initiated or completes a callback is called to notify the user.
+         * The before callback is called just before said callback is executed.
+         * @param asyncId the unique identifier assigned to the resource about to execute the callback.
+         */
+        before?(asyncId: number): void;
+        /**
+         * Called immediately after the callback specified in before is completed.
+         * @param asyncId the unique identifier assigned to the resource which has executed the callback.
+         */
+        after?(asyncId: number): void;
+        /**
+         * Called when a promise has resolve() called. This may not be in the same execution id
+         * as the promise itself.
+         * @param asyncId the unique id for the promise that was resolve()d.
+         */
+        promiseResolve?(asyncId: number): void;
+        /**
+         * Called after the resource corresponding to asyncId is destroyed
+         * @param asyncId a unique ID for the async resource
+         */
+        destroy?(asyncId: number): void;
+    }
+    interface AsyncHook {
+        /**
+         * Enable the callbacks for a given AsyncHook instance. If no callbacks are provided enabling is a noop.
+         */
+        enable(): this;
+        /**
+         * Disable the callbacks for a given AsyncHook instance from the global pool of AsyncHook callbacks to be executed. Once a hook has been disabled it will not be called again until enabled.
+         */
+        disable(): this;
+    }
+    /**
+     * Registers functions to be called for different lifetime events of each async
+     * operation.
+     *
+     * The callbacks `init()`/`before()`/`after()`/`destroy()` are called for the
+     * respective asynchronous event during a resource's lifetime.
+     *
+     * All callbacks are optional. For example, if only resource cleanup needs to
+     * be tracked, then only the `destroy` callback needs to be passed. The
+     * specifics of all functions that can be passed to `callbacks` is in the `Hook Callbacks` section.
+     *
+     * ```js
+     * import { createHook } from 'async_hooks';
+     *
+     * const asyncHook = createHook({
+     *   init(asyncId, type, triggerAsyncId, resource) { },
+     *   destroy(asyncId) { }
+     * });
+     * ```
+     *
+     * The callbacks will be inherited via the prototype chain:
+     *
+     * ```js
+     * class MyAsyncCallbacks {
+     *   init(asyncId, type, triggerAsyncId, resource) { }
+     *   destroy(asyncId) {}
+     * }
+     *
+     * class MyAddedCallbacks extends MyAsyncCallbacks {
+     *   before(asyncId) { }
+     *   after(asyncId) { }
+     * }
+     *
+     * const asyncHook = async_hooks.createHook(new MyAddedCallbacks());
+     * ```
+     *
+     * Because promises are asynchronous resources whose lifecycle is tracked
+     * via the async hooks mechanism, the `init()`, `before()`, `after()`, and`destroy()` callbacks _must not_ be async functions that return promises.
+     * @since v8.1.0
+     * @param callbacks The `Hook Callbacks` to register
+     * @return Instance used for disabling and enabling hooks
+     */
+    function createHook(callbacks: HookCallbacks): AsyncHook;
+    interface AsyncResourceOptions {
+        /**
+         * The ID of the execution context that created this async event.
+         * @default executionAsyncId()
+         */
+        triggerAsyncId?: number | undefined;
+        /**
+         * Disables automatic `emitDestroy` when the object is garbage collected.
+         * This usually does not need to be set (even if `emitDestroy` is called
+         * manually), unless the resource's `asyncId` is retrieved and the
+         * sensitive API's `emitDestroy` is called with it.
+         * @default false
+         */
+        requireManualDestroy?: boolean | undefined;
+    }
+    /**
+     * The class `AsyncResource` is designed to be extended by the embedder's async
+     * resources. Using this, users can easily trigger the lifetime events of their
+     * own resources.
+     *
+     * The `init` hook will trigger when an `AsyncResource` is instantiated.
+     *
+     * The following is an overview of the `AsyncResource` API.
+     *
+     * ```js
+     * import { AsyncResource, executionAsyncId } from 'async_hooks';
+     *
+     * // AsyncResource() is meant to be extended. Instantiating a
+     * // new AsyncResource() also triggers init. If triggerAsyncId is omitted then
+     * // async_hook.executionAsyncId() is used.
+     * const asyncResource = new AsyncResource(
+     *   type, { triggerAsyncId: executionAsyncId(), requireManualDestroy: false }
+     * );
+     *
+     * // Run a function in the execution context of the resource. This will
+     * // * establish the context of the resource
+     * // * trigger the AsyncHooks before callbacks
+     * // * call the provided function `fn` with the supplied arguments
+     * // * trigger the AsyncHooks after callbacks
+     * // * restore the original execution context
+     * asyncResource.runInAsyncScope(fn, thisArg, ...args);
+     *
+     * // Call AsyncHooks destroy callbacks.
+     * asyncResource.emitDestroy();
+     *
+     * // Return the unique ID assigned to the AsyncResource instance.
+     * asyncResource.asyncId();
+     *
+     * // Return the trigger ID for the AsyncResource instance.
+     * asyncResource.triggerAsyncId();
+     * ```
+     */
+    class AsyncResource {
+        /**
+         * AsyncResource() is meant to be extended. Instantiating a
+         * new AsyncResource() also triggers init. If triggerAsyncId is omitted then
+         * async_hook.executionAsyncId() is used.
+         * @param type The type of async event.
+         * @param triggerAsyncId The ID of the execution context that created
+         *   this async event (default: `executionAsyncId()`), or an
+         *   AsyncResourceOptions object (since 9.3)
+         */
+        constructor(type: string, triggerAsyncId?: number | AsyncResourceOptions);
+        /**
+         * Binds the given function to the current execution context.
+         *
+         * The returned function will have an `asyncResource` property referencing
+         * the `AsyncResource` to which the function is bound.
+         * @since v14.8.0, v12.19.0
+         * @param fn The function to bind to the current execution context.
+         * @param type An optional name to associate with the underlying `AsyncResource`.
+         */
+        static bind<Func extends (this: ThisArg, ...args: any[]) => any, ThisArg>(
+            fn: Func,
+            type?: string,
+            thisArg?: ThisArg
+        ): Func & {
+            asyncResource: AsyncResource;
+        };
+        /**
+         * Binds the given function to execute to this `AsyncResource`'s scope.
+         *
+         * The returned function will have an `asyncResource` property referencing
+         * the `AsyncResource` to which the function is bound.
+         * @since v14.8.0, v12.19.0
+         * @param fn The function to bind to the current `AsyncResource`.
+         */
+        bind<Func extends (...args: any[]) => any>(
+            fn: Func
+        ): Func & {
+            asyncResource: AsyncResource;
+        };
+        /**
+         * Call the provided function with the provided arguments in the execution context
+         * of the async resource. This will establish the context, trigger the AsyncHooks
+         * before callbacks, call the function, trigger the AsyncHooks after callbacks, and
+         * then restore the original execution context.
+         * @since v9.6.0
+         * @param fn The function to call in the execution context of this async resource.
+         * @param thisArg The receiver to be used for the function call.
+         * @param args Optional arguments to pass to the function.
+         */
+        runInAsyncScope<This, Result>(fn: (this: This, ...args: any[]) => Result, thisArg?: This, ...args: any[]): Result;
+        /**
+         * Call all `destroy` hooks. This should only ever be called once. An error will
+         * be thrown if it is called more than once. This **must** be manually called. If
+         * the resource is left to be collected by the GC then the `destroy` hooks will
+         * never be called.
+         * @return A reference to `asyncResource`.
+         */
+        emitDestroy(): this;
+        /**
+         * @return The unique `asyncId` assigned to the resource.
+         */
+        asyncId(): number;
+        /**
+         *
+         * @return The same `triggerAsyncId` that is passed to the `AsyncResource` constructor.
+         */
+        triggerAsyncId(): number;
+    }
+    /**
+     * This class creates stores that stay coherent through asynchronous operations.
+     *
+     * While you can create your own implementation on top of the `async_hooks` module,`AsyncLocalStorage` should be preferred as it is a performant and memory safe
+     * implementation that involves significant optimizations that are non-obvious to
+     * implement.
+     *
+     * The following example uses `AsyncLocalStorage` to build a simple logger
+     * that assigns IDs to incoming HTTP requests and includes them in messages
+     * logged within each request.
+     *
+     * ```js
+     * import http from 'http';
+     * import { AsyncLocalStorage } from 'async_hooks';
+     *
+     * const asyncLocalStorage = new AsyncLocalStorage();
+     *
+     * function logWithId(msg) {
+     *   const id = asyncLocalStorage.getStore();
+     *   console.log(`${id !== undefined ? id : '-'}:`, msg);
+     * }
+     *
+     * let idSeq = 0;
+     * http.createServer((req, res) => {
+     *   asyncLocalStorage.run(idSeq++, () => {
+     *     logWithId('start');
+     *     // Imagine any chain of async operations here
+     *     setImmediate(() => {
+     *       logWithId('finish');
+     *       res.end();
+     *     });
+     *   });
+     * }).listen(8080);
+     *
+     * http.get('http://localhost:8080');
+     * http.get('http://localhost:8080');
+     * // Prints:
+     * //   0: start
+     * //   1: start
+     * //   0: finish
+     * //   1: finish
+     * ```
+     *
+     * Each instance of `AsyncLocalStorage` maintains an independent storage context.
+     * Multiple instances can safely exist simultaneously without risk of interfering
+     * with each other data.
+     * @since v13.10.0, v12.17.0
+     */
+    class AsyncLocalStorage<T> {
+        /**
+         * Disables the instance of `AsyncLocalStorage`. All subsequent calls
+         * to `asyncLocalStorage.getStore()` will return `undefined` until`asyncLocalStorage.run()` or `asyncLocalStorage.enterWith()` is called again.
+         *
+         * When calling `asyncLocalStorage.disable()`, all current contexts linked to the
+         * instance will be exited.
+         *
+         * Calling `asyncLocalStorage.disable()` is required before the`asyncLocalStorage` can be garbage collected. This does not apply to stores
+         * provided by the `asyncLocalStorage`, as those objects are garbage collected
+         * along with the corresponding async resources.
+         *
+         * Use this method when the `asyncLocalStorage` is not in use anymore
+         * in the current process.
+         * @since v13.10.0, v12.17.0
+         * @experimental
+         */
+        disable(): void;
+        /**
+         * Returns the current store.
+         * If called outside of an asynchronous context initialized by
+         * calling `asyncLocalStorage.run()` or `asyncLocalStorage.enterWith()`, it
+         * returns `undefined`.
+         * @since v13.10.0, v12.17.0
+         */
+        getStore(): T | undefined;
+        /**
+         * Runs a function synchronously within a context and returns its
+         * return value. The store is not accessible outside of the callback function.
+         * The store is accessible to any asynchronous operations created within the
+         * callback.
+         *
+         * The optional `args` are passed to the callback function.
+         *
+         * If the callback function throws an error, the error is thrown by `run()` too.
+         * The stacktrace is not impacted by this call and the context is exited.
+         *
+         * Example:
+         *
+         * ```js
+         * const store = { id: 2 };
+         * try {
+         *   asyncLocalStorage.run(store, () => {
+         *     asyncLocalStorage.getStore(); // Returns the store object
+         *     setTimeout(() => {
+         *       asyncLocalStorage.getStore(); // Returns the store object
+         *     }, 200);
+         *     throw new Error();
+         *   });
+         * } catch (e) {
+         *   asyncLocalStorage.getStore(); // Returns undefined
+         *   // The error will be caught here
+         * }
+         * ```
+         * @since v13.10.0, v12.17.0
+         */
+        run<R, TArgs extends any[]>(store: T, callback: (...args: TArgs) => R, ...args: TArgs): R;
+        /**
+         * Runs a function synchronously outside of a context and returns its
+         * return value. The store is not accessible within the callback function or
+         * the asynchronous operations created within the callback. Any `getStore()`call done within the callback function will always return `undefined`.
+         *
+         * The optional `args` are passed to the callback function.
+         *
+         * If the callback function throws an error, the error is thrown by `exit()` too.
+         * The stacktrace is not impacted by this call and the context is re-entered.
+         *
+         * Example:
+         *
+         * ```js
+         * // Within a call to run
+         * try {
+         *   asyncLocalStorage.getStore(); // Returns the store object or value
+         *   asyncLocalStorage.exit(() => {
+         *     asyncLocalStorage.getStore(); // Returns undefined
+         *     throw new Error();
+         *   });
+         * } catch (e) {
+         *   asyncLocalStorage.getStore(); // Returns the same object or value
+         *   // The error will be caught here
+         * }
+         * ```
+         * @since v13.10.0, v12.17.0
+         * @experimental
+         */
+        exit<R, TArgs extends any[]>(callback: (...args: TArgs) => R, ...args: TArgs): R;
+        /**
+         * Transitions into the context for the remainder of the current
+         * synchronous execution and then persists the store through any following
+         * asynchronous calls.
+         *
+         * Example:
+         *
+         * ```js
+         * const store = { id: 1 };
+         * // Replaces previous store with the given store object
+         * asyncLocalStorage.enterWith(store);
+         * asyncLocalStorage.getStore(); // Returns the store object
+         * someAsyncOperation(() => {
+         *   asyncLocalStorage.getStore(); // Returns the same object
+         * });
+         * ```
+         *
+         * This transition will continue for the _entire_ synchronous execution.
+         * This means that if, for example, the context is entered within an event
+         * handler subsequent event handlers will also run within that context unless
+         * specifically bound to another context with an `AsyncResource`. That is why`run()` should be preferred over `enterWith()` unless there are strong reasons
+         * to use the latter method.
+         *
+         * ```js
+         * const store = { id: 1 };
+         *
+         * emitter.on('my-event', () => {
+         *   asyncLocalStorage.enterWith(store);
+         * });
+         * emitter.on('my-event', () => {
+         *   asyncLocalStorage.getStore(); // Returns the same object
+         * });
+         *
+         * asyncLocalStorage.getStore(); // Returns undefined
+         * emitter.emit('my-event');
+         * asyncLocalStorage.getStore(); // Returns the same object
+         * ```
+         * @since v13.11.0, v12.17.0
+         * @experimental
+         */
+        enterWith(store: T): void;
+    }
+}
+declare module 'node:async_hooks' {
+    export * from 'async_hooks';
+}

backend/node_modules/@types/node/cluster.d.ts

@@ -0,0 +1,414 @@
+/**
+ * A single instance of Node.js runs in a single thread. To take advantage of
+ * multi-core systems, the user will sometimes want to launch a cluster of Node.js
+ * processes to handle the load.
+ *
+ * The cluster module allows easy creation of child processes that all share
+ * server ports.
+ *
+ * ```js
+ * import cluster from 'cluster';
+ * import http from 'http';
+ * import { cpus } from 'os';
+ * import process from 'process';
+ *
+ * const numCPUs = cpus().length;
+ *
+ * if (cluster.isPrimary) {
+ *   console.log(`Primary ${process.pid} is running`);
+ *
+ *   // Fork workers.
+ *   for (let i = 0; i < numCPUs; i++) {
+ *     cluster.fork();
+ *   }
+ *
+ *   cluster.on('exit', (worker, code, signal) => {
+ *     console.log(`worker ${worker.process.pid} died`);
+ *   });
+ * } else {
+ *   // Workers can share any TCP connection
+ *   // In this case it is an HTTP server
+ *   http.createServer((req, res) => {
+ *     res.writeHead(200);
+ *     res.end('hello world\n');
+ *   }).listen(8000);
+ *
+ *   console.log(`Worker ${process.pid} started`);
+ * }
+ * ```
+ *
+ * Running Node.js will now share port 8000 between the workers:
+ *
+ * ```console
+ * $ node server.js
+ * Primary 3596 is running
+ * Worker 4324 started
+ * Worker 4520 started
+ * Worker 6056 started
+ * Worker 5644 started
+ * ```
+ *
+ * On Windows, it is not yet possible to set up a named pipe server in a worker.
+ * @see [source](https://github.com/nodejs/node/blob/v17.0.0/lib/cluster.js)
+ */
+declare module 'cluster' {
+    import * as child from 'node:child_process';
+    import EventEmitter = require('node:events');
+    import * as net from 'node:net';
+    export interface ClusterSettings {
+        execArgv?: string[] | undefined; // default: process.execArgv
+        exec?: string | undefined;
+        args?: string[] | undefined;
+        silent?: boolean | undefined;
+        stdio?: any[] | undefined;
+        uid?: number | undefined;
+        gid?: number | undefined;
+        inspectPort?: number | (() => number) | undefined;
+    }
+    export interface Address {
+        address: string;
+        port: number;
+        addressType: number | 'udp4' | 'udp6'; // 4, 6, -1, "udp4", "udp6"
+    }
+    /**
+     * A `Worker` object contains all public information and method about a worker.
+     * In the primary it can be obtained using `cluster.workers`. In a worker
+     * it can be obtained using `cluster.worker`.
+     * @since v0.7.0
+     */
+    export class Worker extends EventEmitter {
+        /**
+         * Each new worker is given its own unique id, this id is stored in the`id`.
+         *
+         * While a worker is alive, this is the key that indexes it in`cluster.workers`.
+         * @since v0.8.0
+         */
+        id: number;
+        /**
+         * All workers are created using `child_process.fork()`, the returned object
+         * from this function is stored as `.process`. In a worker, the global `process`is stored.
+         *
+         * See: `Child Process module`.
+         *
+         * Workers will call `process.exit(0)` if the `'disconnect'` event occurs
+         * on `process` and `.exitedAfterDisconnect` is not `true`. This protects against
+         * accidental disconnection.
+         * @since v0.7.0
+         */
+        process: child.ChildProcess;
+        /**
+         * Send a message to a worker or primary, optionally with a handle.
+         *
+         * In the primary this sends a message to a specific worker. It is identical to `ChildProcess.send()`.
+         *
+         * In a worker this sends a message to the primary. It is identical to`process.send()`.
+         *
+         * This example will echo back all messages from the primary:
+         *
+         * ```js
+         * if (cluster.isPrimary) {
+         *   const worker = cluster.fork();
+         *   worker.send('hi there');
+         *
+         * } else if (cluster.isWorker) {
+         *   process.on('message', (msg) => {
+         *     process.send(msg);
+         *   });
+         * }
+         * ```
+         * @since v0.7.0
+         * @param options The `options` argument, if present, is an object used to parameterize the sending of certain types of handles. `options` supports the following properties:
+         */
+        send(message: child.Serializable, callback?: (error: Error | null) => void): boolean;
+        send(message: child.Serializable, sendHandle: child.SendHandle, callback?: (error: Error | null) => void): boolean;
+        send(message: child.Serializable, sendHandle: child.SendHandle, options?: child.MessageOptions, callback?: (error: Error | null) => void): boolean;
+        /**
+         * This function will kill the worker. In the primary, it does this
+         * by disconnecting the `worker.process`, and once disconnected, killing
+         * with `signal`. In the worker, it does it by disconnecting the channel,
+         * and then exiting with code `0`.
+         *
+         * Because `kill()` attempts to gracefully disconnect the worker process, it is
+         * susceptible to waiting indefinitely for the disconnect to complete. For example,
+         * if the worker enters an infinite loop, a graceful disconnect will never occur.
+         * If the graceful disconnect behavior is not needed, use `worker.process.kill()`.
+         *
+         * Causes `.exitedAfterDisconnect` to be set.
+         *
+         * This method is aliased as `worker.destroy()` for backward compatibility.
+         *
+         * In a worker, `process.kill()` exists, but it is not this function;
+         * it is `kill()`.
+         * @since v0.9.12
+         * @param [signal='SIGTERM'] Name of the kill signal to send to the worker process.
+         */
+        kill(signal?: string): void;
+        destroy(signal?: string): void;
+        /**
+         * In a worker, this function will close all servers, wait for the `'close'` event
+         * on those servers, and then disconnect the IPC channel.
+         *
+         * In the primary, an internal message is sent to the worker causing it to call`.disconnect()` on itself.
+         *
+         * Causes `.exitedAfterDisconnect` to be set.
+         *
+         * After a server is closed, it will no longer accept new connections,
+         * but connections may be accepted by any other listening worker. Existing
+         * connections will be allowed to close as usual. When no more connections exist,
+         * see `server.close()`, the IPC channel to the worker will close allowing it
+         * to die gracefully.
+         *
+         * The above applies _only_ to server connections, client connections are not
+         * automatically closed by workers, and disconnect does not wait for them to close
+         * before exiting.
+         *
+         * In a worker, `process.disconnect` exists, but it is not this function;
+         * it is `disconnect()`.
+         *
+         * Because long living server connections may block workers from disconnecting, it
+         * may be useful to send a message, so application specific actions may be taken to
+         * close them. It also may be useful to implement a timeout, killing a worker if
+         * the `'disconnect'` event has not been emitted after some time.
+         *
+         * ```js
+         * if (cluster.isPrimary) {
+         *   const worker = cluster.fork();
+         *   let timeout;
+         *
+         *   worker.on('listening', (address) => {
+         *     worker.send('shutdown');
+         *     worker.disconnect();
+         *     timeout = setTimeout(() => {
+         *       worker.kill();
+         *     }, 2000);
+         *   });
+         *
+         *   worker.on('disconnect', () => {
+         *     clearTimeout(timeout);
+         *   });
+         *
+         * } else if (cluster.isWorker) {
+         *   const net = require('net');
+         *   const server = net.createServer((socket) => {
+         *     // Connections never end
+         *   });
+         *
+         *   server.listen(8000);
+         *
+         *   process.on('message', (msg) => {
+         *     if (msg === 'shutdown') {
+         *       // Initiate graceful close of any connections to server
+         *     }
+         *   });
+         * }
+         * ```
+         * @since v0.7.7
+         * @return A reference to `worker`.
+         */
+        disconnect(): void;
+        /**
+         * This function returns `true` if the worker is connected to its primary via its
+         * IPC channel, `false` otherwise. A worker is connected to its primary after it
+         * has been created. It is disconnected after the `'disconnect'` event is emitted.
+         * @since v0.11.14
+         */
+        isConnected(): boolean;
+        /**
+         * This function returns `true` if the worker's process has terminated (either
+         * because of exiting or being signaled). Otherwise, it returns `false`.
+         *
+         * ```js
+         * import cluster from 'cluster';
+         * import http from 'http';
+         * import { cpus } from 'os';
+         * import process from 'process';
+         *
+         * const numCPUs = cpus().length;
+         *
+         * if (cluster.isPrimary) {
+         *   console.log(`Primary ${process.pid} is running`);
+         *
+         *   // Fork workers.
+         *   for (let i = 0; i < numCPUs; i++) {
+         *     cluster.fork();
+         *   }
+         *
+         *   cluster.on('fork', (worker) => {
+         *     console.log('worker is dead:', worker.isDead());
+         *   });
+         *
+         *   cluster.on('exit', (worker, code, signal) => {
+         *     console.log('worker is dead:', worker.isDead());
+         *   });
+         * } else {
+         *   // Workers can share any TCP connection. In this case, it is an HTTP server.
+         *   http.createServer((req, res) => {
+         *     res.writeHead(200);
+         *     res.end(`Current process\n ${process.pid}`);
+         *     process.kill(process.pid);
+         *   }).listen(8000);
+         * }
+         * ```
+         * @since v0.11.14
+         */
+        isDead(): boolean;
+        /**
+         * This property is `true` if the worker exited due to `.kill()` or`.disconnect()`. If the worker exited any other way, it is `false`. If the
+         * worker has not exited, it is `undefined`.
+         *
+         * The boolean `worker.exitedAfterDisconnect` allows distinguishing between
+         * voluntary and accidental exit, the primary may choose not to respawn a worker
+         * based on this value.
+         *
+         * ```js
+         * cluster.on('exit', (worker, code, signal) => {
+         *   if (worker.exitedAfterDisconnect === true) {
+         *     console.log('Oh, it was just voluntary – no need to worry');
+         *   }
+         * });
+         *
+         * // kill worker
+         * worker.kill();
+         * ```
+         * @since v6.0.0
+         */
+        exitedAfterDisconnect: boolean;
+        /**
+         * events.EventEmitter
+         *   1. disconnect
+         *   2. error
+         *   3. exit
+         *   4. listening
+         *   5. message
+         *   6. online
+         */
+        addListener(event: string, listener: (...args: any[]) => void): this;
+        addListener(event: 'disconnect', listener: () => void): this;
+        addListener(event: 'error', listener: (error: Error) => void): this;
+        addListener(event: 'exit', listener: (code: number, signal: string) => void): this;
+        addListener(event: 'listening', listener: (address: Address) => void): this;
+        addListener(event: 'message', listener: (message: any, handle: net.Socket | net.Server) => void): this; // the handle is a net.Socket or net.Server object, or undefined.
+        addListener(event: 'online', listener: () => void): this;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        emit(event: 'disconnect'): boolean;
+        emit(event: 'error', error: Error): boolean;
+        emit(event: 'exit', code: number, signal: string): boolean;
+        emit(event: 'listening', address: Address): boolean;
+        emit(event: 'message', message: any, handle: net.Socket | net.Server): boolean;
+        emit(event: 'online'): boolean;
+        on(event: string, listener: (...args: any[]) => void): this;
+        on(event: 'disconnect', listener: () => void): this;
+        on(event: 'error', listener: (error: Error) => void): this;
+        on(event: 'exit', listener: (code: number, signal: string) => void): this;
+        on(event: 'listening', listener: (address: Address) => void): this;
+        on(event: 'message', listener: (message: any, handle: net.Socket | net.Server) => void): this; // the handle is a net.Socket or net.Server object, or undefined.
+        on(event: 'online', listener: () => void): this;
+        once(event: string, listener: (...args: any[]) => void): this;
+        once(event: 'disconnect', listener: () => void): this;
+        once(event: 'error', listener: (error: Error) => void): this;
+        once(event: 'exit', listener: (code: number, signal: string) => void): this;
+        once(event: 'listening', listener: (address: Address) => void): this;
+        once(event: 'message', listener: (message: any, handle: net.Socket | net.Server) => void): this; // the handle is a net.Socket or net.Server object, or undefined.
+        once(event: 'online', listener: () => void): this;
+        prependListener(event: string, listener: (...args: any[]) => void): this;
+        prependListener(event: 'disconnect', listener: () => void): this;
+        prependListener(event: 'error', listener: (error: Error) => void): this;
+        prependListener(event: 'exit', listener: (code: number, signal: string) => void): this;
+        prependListener(event: 'listening', listener: (address: Address) => void): this;
+        prependListener(event: 'message', listener: (message: any, handle: net.Socket | net.Server) => void): this; // the handle is a net.Socket or net.Server object, or undefined.
+        prependListener(event: 'online', listener: () => void): this;
+        prependOnceListener(event: string, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'disconnect', listener: () => void): this;
+        prependOnceListener(event: 'error', listener: (error: Error) => void): this;
+        prependOnceListener(event: 'exit', listener: (code: number, signal: string) => void): this;
+        prependOnceListener(event: 'listening', listener: (address: Address) => void): this;
+        prependOnceListener(event: 'message', listener: (message: any, handle: net.Socket | net.Server) => void): this; // the handle is a net.Socket or net.Server object, or undefined.
+        prependOnceListener(event: 'online', listener: () => void): this;
+    }
+    export interface Cluster extends EventEmitter {
+        disconnect(callback?: () => void): void;
+        fork(env?: any): Worker;
+        /** @deprecated since v16.0.0 - use isPrimary. */
+        readonly isMaster: boolean;
+        readonly isPrimary: boolean;
+        readonly isWorker: boolean;
+        schedulingPolicy: number;
+        readonly settings: ClusterSettings;
+        /** @deprecated since v16.0.0 - use setupPrimary. */
+        setupMaster(settings?: ClusterSettings): void;
+        /**
+         * `setupPrimary` is used to change the default 'fork' behavior. Once called, the settings will be present in cluster.settings.
+         */
+        setupPrimary(settings?: ClusterSettings): void;
+        readonly worker?: Worker | undefined;
+        readonly workers?: NodeJS.Dict<Worker> | undefined;
+        readonly SCHED_NONE: number;
+        readonly SCHED_RR: number;
+        /**
+         * events.EventEmitter
+         *   1. disconnect
+         *   2. exit
+         *   3. fork
+         *   4. listening
+         *   5. message
+         *   6. online
+         *   7. setup
+         */
+        addListener(event: string, listener: (...args: any[]) => void): this;
+        addListener(event: 'disconnect', listener: (worker: Worker) => void): this;
+        addListener(event: 'exit', listener: (worker: Worker, code: number, signal: string) => void): this;
+        addListener(event: 'fork', listener: (worker: Worker) => void): this;
+        addListener(event: 'listening', listener: (worker: Worker, address: Address) => void): this;
+        addListener(event: 'message', listener: (worker: Worker, message: any, handle: net.Socket | net.Server) => void): this; // the handle is a net.Socket or net.Server object, or undefined.
+        addListener(event: 'online', listener: (worker: Worker) => void): this;
+        addListener(event: 'setup', listener: (settings: ClusterSettings) => void): this;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        emit(event: 'disconnect', worker: Worker): boolean;
+        emit(event: 'exit', worker: Worker, code: number, signal: string): boolean;
+        emit(event: 'fork', worker: Worker): boolean;
+        emit(event: 'listening', worker: Worker, address: Address): boolean;
+        emit(event: 'message', worker: Worker, message: any, handle: net.Socket | net.Server): boolean;
+        emit(event: 'online', worker: Worker): boolean;
+        emit(event: 'setup', settings: ClusterSettings): boolean;
+        on(event: string, listener: (...args: any[]) => void): this;
+        on(event: 'disconnect', listener: (worker: Worker) => void): this;
+        on(event: 'exit', listener: (worker: Worker, code: number, signal: string) => void): this;
+        on(event: 'fork', listener: (worker: Worker) => void): this;
+        on(event: 'listening', listener: (worker: Worker, address: Address) => void): this;
+        on(event: 'message', listener: (worker: Worker, message: any, handle: net.Socket | net.Server) => void): this; // the handle is a net.Socket or net.Server object, or undefined.
+        on(event: 'online', listener: (worker: Worker) => void): this;
+        on(event: 'setup', listener: (settings: ClusterSettings) => void): this;
+        once(event: string, listener: (...args: any[]) => void): this;
+        once(event: 'disconnect', listener: (worker: Worker) => void): this;
+        once(event: 'exit', listener: (worker: Worker, code: number, signal: string) => void): this;
+        once(event: 'fork', listener: (worker: Worker) => void): this;
+        once(event: 'listening', listener: (worker: Worker, address: Address) => void): this;
+        once(event: 'message', listener: (worker: Worker, message: any, handle: net.Socket | net.Server) => void): this; // the handle is a net.Socket or net.Server object, or undefined.
+        once(event: 'online', listener: (worker: Worker) => void): this;
+        once(event: 'setup', listener: (settings: ClusterSettings) => void): this;
+        prependListener(event: string, listener: (...args: any[]) => void): this;
+        prependListener(event: 'disconnect', listener: (worker: Worker) => void): this;
+        prependListener(event: 'exit', listener: (worker: Worker, code: number, signal: string) => void): this;
+        prependListener(event: 'fork', listener: (worker: Worker) => void): this;
+        prependListener(event: 'listening', listener: (worker: Worker, address: Address) => void): this;
+        // the handle is a net.Socket or net.Server object, or undefined.
+        prependListener(event: 'message', listener: (worker: Worker, message: any, handle?: net.Socket | net.Server) => void): this;
+        prependListener(event: 'online', listener: (worker: Worker) => void): this;
+        prependListener(event: 'setup', listener: (settings: ClusterSettings) => void): this;
+        prependOnceListener(event: string, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'disconnect', listener: (worker: Worker) => void): this;
+        prependOnceListener(event: 'exit', listener: (worker: Worker, code: number, signal: string) => void): this;
+        prependOnceListener(event: 'fork', listener: (worker: Worker) => void): this;
+        prependOnceListener(event: 'listening', listener: (worker: Worker, address: Address) => void): this;
+        // the handle is a net.Socket or net.Server object, or undefined.
+        prependOnceListener(event: 'message', listener: (worker: Worker, message: any, handle: net.Socket | net.Server) => void): this;
+        prependOnceListener(event: 'online', listener: (worker: Worker) => void): this;
+        prependOnceListener(event: 'setup', listener: (settings: ClusterSettings) => void): this;
+    }
+    const cluster: Cluster;
+    export default cluster;
+}
+declare module 'node:cluster' {
+    export * from 'cluster';
+    export { default as default } from 'cluster';
+}

backend/node_modules/@types/node/console.d.ts

@@ -0,0 +1,412 @@
+/**
+ * The `console` module provides a simple debugging console that is similar to the
+ * JavaScript console mechanism provided by web browsers.
+ *
+ * The module exports two specific components:
+ *
+ * * A `Console` class with methods such as `console.log()`, `console.error()` and`console.warn()` that can be used to write to any Node.js stream.
+ * * A global `console` instance configured to write to `process.stdout` and `process.stderr`. The global `console` can be used without calling`require('console')`.
+ *
+ * _**Warning**_: The global console object's methods are neither consistently
+ * synchronous like the browser APIs they resemble, nor are they consistently
+ * asynchronous like all other Node.js streams. See the `note on process I/O` for
+ * more information.
+ *
+ * Example using the global `console`:
+ *
+ * ```js
+ * console.log('hello world');
+ * // Prints: hello world, to stdout
+ * console.log('hello %s', 'world');
+ * // Prints: hello world, to stdout
+ * console.error(new Error('Whoops, something bad happened'));
+ * // Prints error message and stack trace to stderr:
+ * //   Error: Whoops, something bad happened
+ * //     at [eval]:5:15
+ * //     at Script.runInThisContext (node:vm:132:18)
+ * //     at Object.runInThisContext (node:vm:309:38)
+ * //     at node:internal/process/execution:77:19
+ * //     at [eval]-wrapper:6:22
+ * //     at evalScript (node:internal/process/execution:76:60)
+ * //     at node:internal/main/eval_string:23:3
+ *
+ * const name = 'Will Robinson';
+ * console.warn(`Danger ${name}! Danger!`);
+ * // Prints: Danger Will Robinson! Danger!, to stderr
+ * ```
+ *
+ * Example using the `Console` class:
+ *
+ * ```js
+ * const out = getStreamSomehow();
+ * const err = getStreamSomehow();
+ * const myConsole = new console.Console(out, err);
+ *
+ * myConsole.log('hello world');
+ * // Prints: hello world, to out
+ * myConsole.log('hello %s', 'world');
+ * // Prints: hello world, to out
+ * myConsole.error(new Error('Whoops, something bad happened'));
+ * // Prints: [Error: Whoops, something bad happened], to err
+ *
+ * const name = 'Will Robinson';
+ * myConsole.warn(`Danger ${name}! Danger!`);
+ * // Prints: Danger Will Robinson! Danger!, to err
+ * ```
+ * @see [source](https://github.com/nodejs/node/blob/v17.0.0/lib/console.js)
+ */
+declare module 'console' {
+    import console = require('node:console');
+    export = console;
+}
+declare module 'node:console' {
+    import { InspectOptions } from 'node:util';
+    global {
+        // This needs to be global to avoid TS2403 in case lib.dom.d.ts is present in the same build
+        interface Console {
+            Console: console.ConsoleConstructor;
+            /**
+             * `console.assert()` writes a message if `value` is [falsy](https://developer.mozilla.org/en-US/docs/Glossary/Falsy) or omitted. It only
+             * writes a message and does not otherwise affect execution. The output always
+             * starts with `"Assertion failed"`. If provided, `message` is formatted using `util.format()`.
+             *
+             * If `value` is [truthy](https://developer.mozilla.org/en-US/docs/Glossary/Truthy), nothing happens.
+             *
+             * ```js
+             * console.assert(true, 'does nothing');
+             *
+             * console.assert(false, 'Whoops %s work', 'didn\'t');
+             * // Assertion failed: Whoops didn't work
+             *
+             * console.assert();
+             * // Assertion failed
+             * ```
+             * @since v0.1.101
+             * @param value The value tested for being truthy.
+             * @param message All arguments besides `value` are used as error message.
+             */
+            assert(value: any, message?: string, ...optionalParams: any[]): void;
+            /**
+             * When `stdout` is a TTY, calling `console.clear()` will attempt to clear the
+             * TTY. When `stdout` is not a TTY, this method does nothing.
+             *
+             * The specific operation of `console.clear()` can vary across operating systems
+             * and terminal types. For most Linux operating systems, `console.clear()`operates similarly to the `clear` shell command. On Windows, `console.clear()`will clear only the output in the
+             * current terminal viewport for the Node.js
+             * binary.
+             * @since v8.3.0
+             */
+            clear(): void;
+            /**
+             * Maintains an internal counter specific to `label` and outputs to `stdout` the
+             * number of times `console.count()` has been called with the given `label`.
+             *
+             * ```js
+             * > console.count()
+             * default: 1
+             * undefined
+             * > console.count('default')
+             * default: 2
+             * undefined
+             * > console.count('abc')
+             * abc: 1
+             * undefined
+             * > console.count('xyz')
+             * xyz: 1
+             * undefined
+             * > console.count('abc')
+             * abc: 2
+             * undefined
+             * > console.count()
+             * default: 3
+             * undefined
+             * >
+             * ```
+             * @since v8.3.0
+             * @param label The display label for the counter.
+             */
+            count(label?: string): void;
+            /**
+             * Resets the internal counter specific to `label`.
+             *
+             * ```js
+             * > console.count('abc');
+             * abc: 1
+             * undefined
+             * > console.countReset('abc');
+             * undefined
+             * > console.count('abc');
+             * abc: 1
+             * undefined
+             * >
+             * ```
+             * @since v8.3.0
+             * @param label The display label for the counter.
+             */
+            countReset(label?: string): void;
+            /**
+             * The `console.debug()` function is an alias for {@link log}.
+             * @since v8.0.0
+             */
+            debug(message?: any, ...optionalParams: any[]): void;
+            /**
+             * Uses `util.inspect()` on `obj` and prints the resulting string to `stdout`.
+             * This function bypasses any custom `inspect()` function defined on `obj`.
+             * @since v0.1.101
+             */
+            dir(obj: any, options?: InspectOptions): void;
+            /**
+             * This method calls `console.log()` passing it the arguments received.
+             * This method does not produce any XML formatting.
+             * @since v8.0.0
+             */
+            dirxml(...data: any[]): void;
+            /**
+             * Prints to `stderr` with newline. Multiple arguments can be passed, with the
+             * first used as the primary message and all additional used as substitution
+             * values similar to [`printf(3)`](http://man7.org/linux/man-pages/man3/printf.3.html) (the arguments are all passed to `util.format()`).
+             *
+             * ```js
+             * const code = 5;
+             * console.error('error #%d', code);
+             * // Prints: error #5, to stderr
+             * console.error('error', code);
+             * // Prints: error 5, to stderr
+             * ```
+             *
+             * If formatting elements (e.g. `%d`) are not found in the first string then `util.inspect()` is called on each argument and the resulting string
+             * values are concatenated. See `util.format()` for more information.
+             * @since v0.1.100
+             */
+            error(message?: any, ...optionalParams: any[]): void;
+            /**
+             * Increases indentation of subsequent lines by spaces for `groupIndentation`length.
+             *
+             * If one or more `label`s are provided, those are printed first without the
+             * additional indentation.
+             * @since v8.5.0
+             */
+            group(...label: any[]): void;
+            /**
+             * An alias for {@link group}.
+             * @since v8.5.0
+             */
+            groupCollapsed(...label: any[]): void;
+            /**
+             * Decreases indentation of subsequent lines by spaces for `groupIndentation`length.
+             * @since v8.5.0
+             */
+            groupEnd(): void;
+            /**
+             * The `console.info()` function is an alias for {@link log}.
+             * @since v0.1.100
+             */
+            info(message?: any, ...optionalParams: any[]): void;
+            /**
+             * Prints to `stdout` with newline. Multiple arguments can be passed, with the
+             * first used as the primary message and all additional used as substitution
+             * values similar to [`printf(3)`](http://man7.org/linux/man-pages/man3/printf.3.html) (the arguments are all passed to `util.format()`).
+             *
+             * ```js
+             * const count = 5;
+             * console.log('count: %d', count);
+             * // Prints: count: 5, to stdout
+             * console.log('count:', count);
+             * // Prints: count: 5, to stdout
+             * ```
+             *
+             * See `util.format()` for more information.
+             * @since v0.1.100
+             */
+            log(message?: any, ...optionalParams: any[]): void;
+            /**
+             * Try to construct a table with the columns of the properties of `tabularData`(or use `properties`) and rows of `tabularData` and log it. Falls back to just
+             * logging the argument if it can’t be parsed as tabular.
+             *
+             * ```js
+             * // These can't be parsed as tabular data
+             * console.table(Symbol());
+             * // Symbol()
+             *
+             * console.table(undefined);
+             * // undefined
+             *
+             * console.table([{ a: 1, b: 'Y' }, { a: 'Z', b: 2 }]);
+             * // ┌─────────┬─────┬─────┐
+             * // │ (index) │  a  │  b  │
+             * // ├─────────┼─────┼─────┤
+             * // │    0    │  1  │ 'Y' │
+             * // │    1    │ 'Z' │  2  │
+             * // └─────────┴─────┴─────┘
+             *
+             * console.table([{ a: 1, b: 'Y' }, { a: 'Z', b: 2 }], ['a']);
+             * // ┌─────────┬─────┐
+             * // │ (index) │  a  │
+             * // ├─────────┼─────┤
+             * // │    0    │  1  │
+             * // │    1    │ 'Z' │
+             * // └─────────┴─────┘
+             * ```
+             * @since v10.0.0
+             * @param properties Alternate properties for constructing the table.
+             */
+            table(tabularData: any, properties?: ReadonlyArray<string>): void;
+            /**
+             * Starts a timer that can be used to compute the duration of an operation. Timers
+             * are identified by a unique `label`. Use the same `label` when calling {@link timeEnd} to stop the timer and output the elapsed time in
+             * suitable time units to `stdout`. For example, if the elapsed
+             * time is 3869ms, `console.timeEnd()` displays "3.869s".
+             * @since v0.1.104
+             */
+            time(label?: string): void;
+            /**
+             * Stops a timer that was previously started by calling {@link time} and
+             * prints the result to `stdout`:
+             *
+             * ```js
+             * console.time('100-elements');
+             * for (let i = 0; i < 100; i++) {}
+             * console.timeEnd('100-elements');
+             * // prints 100-elements: 225.438ms
+             * ```
+             * @since v0.1.104
+             */
+            timeEnd(label?: string): void;
+            /**
+             * For a timer that was previously started by calling {@link time}, prints
+             * the elapsed time and other `data` arguments to `stdout`:
+             *
+             * ```js
+             * console.time('process');
+             * const value = expensiveProcess1(); // Returns 42
+             * console.timeLog('process', value);
+             * // Prints "process: 365.227ms 42".
+             * doExpensiveProcess2(value);
+             * console.timeEnd('process');
+             * ```
+             * @since v10.7.0
+             */
+            timeLog(label?: string, ...data: any[]): void;
+            /**
+             * Prints to `stderr` the string `'Trace: '`, followed by the `util.format()` formatted message and stack trace to the current position in the code.
+             *
+             * ```js
+             * console.trace('Show me');
+             * // Prints: (stack trace will vary based on where trace is called)
+             * //  Trace: Show me
+             * //    at repl:2:9
+             * //    at REPLServer.defaultEval (repl.js:248:27)
+             * //    at bound (domain.js:287:14)
+             * //    at REPLServer.runBound [as eval] (domain.js:300:12)
+             * //    at REPLServer.<anonymous> (repl.js:412:12)
+             * //    at emitOne (events.js:82:20)
+             * //    at REPLServer.emit (events.js:169:7)
+             * //    at REPLServer.Interface._onLine (readline.js:210:10)
+             * //    at REPLServer.Interface._line (readline.js:549:8)
+             * //    at REPLServer.Interface._ttyWrite (readline.js:826:14)
+             * ```
+             * @since v0.1.104
+             */
+            trace(message?: any, ...optionalParams: any[]): void;
+            /**
+             * The `console.warn()` function is an alias for {@link error}.
+             * @since v0.1.100
+             */
+            warn(message?: any, ...optionalParams: any[]): void;
+            // --- Inspector mode only ---
+            /**
+             * This method does not display anything unless used in the inspector.
+             *  Starts a JavaScript CPU profile with an optional label.
+             */
+            profile(label?: string): void;
+            /**
+             * This method does not display anything unless used in the inspector.
+             *  Stops the current JavaScript CPU profiling session if one has been started and prints the report to the Profiles panel of the inspector.
+             */
+            profileEnd(label?: string): void;
+            /**
+             * This method does not display anything unless used in the inspector.
+             *  Adds an event with the label `label` to the Timeline panel of the inspector.
+             */
+            timeStamp(label?: string): void;
+        }
+        /**
+         * The `console` module provides a simple debugging console that is similar to the
+         * JavaScript console mechanism provided by web browsers.
+         *
+         * The module exports two specific components:
+         *
+         * * A `Console` class with methods such as `console.log()`, `console.error()` and`console.warn()` that can be used to write to any Node.js stream.
+         * * A global `console` instance configured to write to `process.stdout` and `process.stderr`. The global `console` can be used without calling`require('console')`.
+         *
+         * _**Warning**_: The global console object's methods are neither consistently
+         * synchronous like the browser APIs they resemble, nor are they consistently
+         * asynchronous like all other Node.js streams. See the `note on process I/O` for
+         * more information.
+         *
+         * Example using the global `console`:
+         *
+         * ```js
+         * console.log('hello world');
+         * // Prints: hello world, to stdout
+         * console.log('hello %s', 'world');
+         * // Prints: hello world, to stdout
+         * console.error(new Error('Whoops, something bad happened'));
+         * // Prints error message and stack trace to stderr:
+         * //   Error: Whoops, something bad happened
+         * //     at [eval]:5:15
+         * //     at Script.runInThisContext (node:vm:132:18)
+         * //     at Object.runInThisContext (node:vm:309:38)
+         * //     at node:internal/process/execution:77:19
+         * //     at [eval]-wrapper:6:22
+         * //     at evalScript (node:internal/process/execution:76:60)
+         * //     at node:internal/main/eval_string:23:3
+         *
+         * const name = 'Will Robinson';
+         * console.warn(`Danger ${name}! Danger!`);
+         * // Prints: Danger Will Robinson! Danger!, to stderr
+         * ```
+         *
+         * Example using the `Console` class:
+         *
+         * ```js
+         * const out = getStreamSomehow();
+         * const err = getStreamSomehow();
+         * const myConsole = new console.Console(out, err);
+         *
+         * myConsole.log('hello world');
+         * // Prints: hello world, to out
+         * myConsole.log('hello %s', 'world');
+         * // Prints: hello world, to out
+         * myConsole.error(new Error('Whoops, something bad happened'));
+         * // Prints: [Error: Whoops, something bad happened], to err
+         *
+         * const name = 'Will Robinson';
+         * myConsole.warn(`Danger ${name}! Danger!`);
+         * // Prints: Danger Will Robinson! Danger!, to err
+         * ```
+         * @see [source](https://github.com/nodejs/node/blob/v16.4.2/lib/console.js)
+         */
+        namespace console {
+            interface ConsoleConstructorOptions {
+                stdout: NodeJS.WritableStream;
+                stderr?: NodeJS.WritableStream | undefined;
+                ignoreErrors?: boolean | undefined;
+                colorMode?: boolean | 'auto' | undefined;
+                inspectOptions?: InspectOptions | undefined;
+                /**
+                 * Set group indentation
+                 * @default 2
+                 */
+                groupIndentation?: number | undefined;
+            }
+            interface ConsoleConstructor {
+                prototype: Console;
+                new (stdout: NodeJS.WritableStream, stderr?: NodeJS.WritableStream, ignoreErrors?: boolean): Console;
+                new (options: ConsoleConstructorOptions): Console;
+            }
+        }
+        var console: Console;
+    }
+    export = globalThis.console;
+}

backend/node_modules/@types/node/constants.d.ts

@@ -0,0 +1,18 @@
+/** @deprecated since v6.3.0 - use constants property exposed by the relevant module instead. */
+declare module 'constants' {
+    import { constants as osConstants, SignalConstants } from 'node:os';
+    import { constants as cryptoConstants } from 'node:crypto';
+    import { constants as fsConstants } from 'node:fs';
+
+    const exp: typeof osConstants.errno &
+        typeof osConstants.priority &
+        SignalConstants &
+        typeof cryptoConstants &
+        typeof fsConstants;
+    export = exp;
+}
+
+declare module 'node:constants' {
+    import constants = require('constants');
+    export = constants;
+}

backend/node_modules/@types/node/dgram.d.ts

@@ -0,0 +1,545 @@
+/**
+ * The `dgram` module provides an implementation of UDP datagram sockets.
+ *
+ * ```js
+ * import dgram from 'dgram';
+ *
+ * const server = dgram.createSocket('udp4');
+ *
+ * server.on('error', (err) => {
+ *   console.log(`server error:\n${err.stack}`);
+ *   server.close();
+ * });
+ *
+ * server.on('message', (msg, rinfo) => {
+ *   console.log(`server got: ${msg} from ${rinfo.address}:${rinfo.port}`);
+ * });
+ *
+ * server.on('listening', () => {
+ *   const address = server.address();
+ *   console.log(`server listening ${address.address}:${address.port}`);
+ * });
+ *
+ * server.bind(41234);
+ * // Prints: server listening 0.0.0.0:41234
+ * ```
+ * @see [source](https://github.com/nodejs/node/blob/v17.0.0/lib/dgram.js)
+ */
+declare module 'dgram' {
+    import { AddressInfo } from 'node:net';
+    import * as dns from 'node:dns';
+    import { EventEmitter, Abortable } from 'node:events';
+    interface RemoteInfo {
+        address: string;
+        family: 'IPv4' | 'IPv6';
+        port: number;
+        size: number;
+    }
+    interface BindOptions {
+        port?: number | undefined;
+        address?: string | undefined;
+        exclusive?: boolean | undefined;
+        fd?: number | undefined;
+    }
+    type SocketType = 'udp4' | 'udp6';
+    interface SocketOptions extends Abortable {
+        type: SocketType;
+        reuseAddr?: boolean | undefined;
+        /**
+         * @default false
+         */
+        ipv6Only?: boolean | undefined;
+        recvBufferSize?: number | undefined;
+        sendBufferSize?: number | undefined;
+        lookup?: ((hostname: string, options: dns.LookupOneOptions, callback: (err: NodeJS.ErrnoException | null, address: string, family: number) => void) => void) | undefined;
+    }
+    /**
+     * Creates a `dgram.Socket` object. Once the socket is created, calling `socket.bind()` will instruct the socket to begin listening for datagram
+     * messages. When `address` and `port` are not passed to `socket.bind()` the
+     * method will bind the socket to the "all interfaces" address on a random port
+     * (it does the right thing for both `udp4` and `udp6` sockets). The bound address
+     * and port can be retrieved using `socket.address().address` and `socket.address().port`.
+     *
+     * If the `signal` option is enabled, calling `.abort()` on the corresponding`AbortController` is similar to calling `.close()` on the socket:
+     *
+     * ```js
+     * const controller = new AbortController();
+     * const { signal } = controller;
+     * const server = dgram.createSocket({ type: 'udp4', signal });
+     * server.on('message', (msg, rinfo) => {
+     *   console.log(`server got: ${msg} from ${rinfo.address}:${rinfo.port}`);
+     * });
+     * // Later, when you want to close the server.
+     * controller.abort();
+     * ```
+     * @since v0.11.13
+     * @param options Available options are:
+     * @param callback Attached as a listener for `'message'` events. Optional.
+     */
+    function createSocket(type: SocketType, callback?: (msg: Buffer, rinfo: RemoteInfo) => void): Socket;
+    function createSocket(options: SocketOptions, callback?: (msg: Buffer, rinfo: RemoteInfo) => void): Socket;
+    /**
+     * Encapsulates the datagram functionality.
+     *
+     * New instances of `dgram.Socket` are created using {@link createSocket}.
+     * The `new` keyword is not to be used to create `dgram.Socket` instances.
+     * @since v0.1.99
+     */
+    class Socket extends EventEmitter {
+        /**
+         * Tells the kernel to join a multicast group at the given `multicastAddress` and`multicastInterface` using the `IP_ADD_MEMBERSHIP` socket option. If the`multicastInterface` argument is not
+         * specified, the operating system will choose
+         * one interface and will add membership to it. To add membership to every
+         * available interface, call `addMembership` multiple times, once per interface.
+         *
+         * When called on an unbound socket, this method will implicitly bind to a random
+         * port, listening on all interfaces.
+         *
+         * When sharing a UDP socket across multiple `cluster` workers, the`socket.addMembership()` function must be called only once or an`EADDRINUSE` error will occur:
+         *
+         * ```js
+         * import cluster from 'cluster';
+         * import dgram from 'dgram';
+         *
+         * if (cluster.isPrimary) {
+         *   cluster.fork(); // Works ok.
+         *   cluster.fork(); // Fails with EADDRINUSE.
+         * } else {
+         *   const s = dgram.createSocket('udp4');
+         *   s.bind(1234, () => {
+         *     s.addMembership('224.0.0.114');
+         *   });
+         * }
+         * ```
+         * @since v0.6.9
+         */
+        addMembership(multicastAddress: string, multicastInterface?: string): void;
+        /**
+         * Returns an object containing the address information for a socket.
+         * For UDP sockets, this object will contain `address`, `family` and `port`properties.
+         *
+         * This method throws `EBADF` if called on an unbound socket.
+         * @since v0.1.99
+         */
+        address(): AddressInfo;
+        /**
+         * For UDP sockets, causes the `dgram.Socket` to listen for datagram
+         * messages on a named `port` and optional `address`. If `port` is not
+         * specified or is `0`, the operating system will attempt to bind to a
+         * random port. If `address` is not specified, the operating system will
+         * attempt to listen on all addresses. Once binding is complete, a`'listening'` event is emitted and the optional `callback` function is
+         * called.
+         *
+         * Specifying both a `'listening'` event listener and passing a`callback` to the `socket.bind()` method is not harmful but not very
+         * useful.
+         *
+         * A bound datagram socket keeps the Node.js process running to receive
+         * datagram messages.
+         *
+         * If binding fails, an `'error'` event is generated. In rare case (e.g.
+         * attempting to bind with a closed socket), an `Error` may be thrown.
+         *
+         * Example of a UDP server listening on port 41234:
+         *
+         * ```js
+         * import dgram from 'dgram';
+         *
+         * const server = dgram.createSocket('udp4');
+         *
+         * server.on('error', (err) => {
+         *   console.log(`server error:\n${err.stack}`);
+         *   server.close();
+         * });
+         *
+         * server.on('message', (msg, rinfo) => {
+         *   console.log(`server got: ${msg} from ${rinfo.address}:${rinfo.port}`);
+         * });
+         *
+         * server.on('listening', () => {
+         *   const address = server.address();
+         *   console.log(`server listening ${address.address}:${address.port}`);
+         * });
+         *
+         * server.bind(41234);
+         * // Prints: server listening 0.0.0.0:41234
+         * ```
+         * @since v0.1.99
+         * @param callback with no parameters. Called when binding is complete.
+         */
+        bind(port?: number, address?: string, callback?: () => void): this;
+        bind(port?: number, callback?: () => void): this;
+        bind(callback?: () => void): this;
+        bind(options: BindOptions, callback?: () => void): this;
+        /**
+         * Close the underlying socket and stop listening for data on it. If a callback is
+         * provided, it is added as a listener for the `'close'` event.
+         * @since v0.1.99
+         * @param callback Called when the socket has been closed.
+         */
+        close(callback?: () => void): this;
+        /**
+         * Associates the `dgram.Socket` to a remote address and port. Every
+         * message sent by this handle is automatically sent to that destination. Also,
+         * the socket will only receive messages from that remote peer.
+         * Trying to call `connect()` on an already connected socket will result
+         * in an `ERR_SOCKET_DGRAM_IS_CONNECTED` exception. If `address` is not
+         * provided, `'127.0.0.1'` (for `udp4` sockets) or `'::1'` (for `udp6` sockets)
+         * will be used by default. Once the connection is complete, a `'connect'` event
+         * is emitted and the optional `callback` function is called. In case of failure,
+         * the `callback` is called or, failing this, an `'error'` event is emitted.
+         * @since v12.0.0
+         * @param callback Called when the connection is completed or on error.
+         */
+        connect(port: number, address?: string, callback?: () => void): void;
+        connect(port: number, callback: () => void): void;
+        /**
+         * A synchronous function that disassociates a connected `dgram.Socket` from
+         * its remote address. Trying to call `disconnect()` on an unbound or already
+         * disconnected socket will result in an `ERR_SOCKET_DGRAM_NOT_CONNECTED` exception.
+         * @since v12.0.0
+         */
+        disconnect(): void;
+        /**
+         * Instructs the kernel to leave a multicast group at `multicastAddress` using the`IP_DROP_MEMBERSHIP` socket option. This method is automatically called by the
+         * kernel when the socket is closed or the process terminates, so most apps will
+         * never have reason to call this.
+         *
+         * If `multicastInterface` is not specified, the operating system will attempt to
+         * drop membership on all valid interfaces.
+         * @since v0.6.9
+         */
+        dropMembership(multicastAddress: string, multicastInterface?: string): void;
+        /**
+         * This method throws `ERR_SOCKET_BUFFER_SIZE` if called on an unbound socket.
+         * @since v8.7.0
+         * @return the `SO_RCVBUF` socket receive buffer size in bytes.
+         */
+        getRecvBufferSize(): number;
+        /**
+         * This method throws `ERR_SOCKET_BUFFER_SIZE` if called on an unbound socket.
+         * @since v8.7.0
+         * @return the `SO_SNDBUF` socket send buffer size in bytes.
+         */
+        getSendBufferSize(): number;
+        /**
+         * By default, binding a socket will cause it to block the Node.js process from
+         * exiting as long as the socket is open. The `socket.unref()` method can be used
+         * to exclude the socket from the reference counting that keeps the Node.js
+         * process active. The `socket.ref()` method adds the socket back to the reference
+         * counting and restores the default behavior.
+         *
+         * Calling `socket.ref()` multiples times will have no additional effect.
+         *
+         * The `socket.ref()` method returns a reference to the socket so calls can be
+         * chained.
+         * @since v0.9.1
+         */
+        ref(): this;
+        /**
+         * Returns an object containing the `address`, `family`, and `port` of the remote
+         * endpoint. This method throws an `ERR_SOCKET_DGRAM_NOT_CONNECTED` exception
+         * if the socket is not connected.
+         * @since v12.0.0
+         */
+        remoteAddress(): AddressInfo;
+        /**
+         * Broadcasts a datagram on the socket.
+         * For connectionless sockets, the destination `port` and `address` must be
+         * specified. Connected sockets, on the other hand, will use their associated
+         * remote endpoint, so the `port` and `address` arguments must not be set.
+         *
+         * The `msg` argument contains the message to be sent.
+         * Depending on its type, different behavior can apply. If `msg` is a `Buffer`,
+         * any `TypedArray` or a `DataView`,
+         * the `offset` and `length` specify the offset within the `Buffer` where the
+         * message begins and the number of bytes in the message, respectively.
+         * If `msg` is a `String`, then it is automatically converted to a `Buffer`with `'utf8'` encoding. With messages that
+         * contain multi-byte characters, `offset` and `length` will be calculated with
+         * respect to `byte length` and not the character position.
+         * If `msg` is an array, `offset` and `length` must not be specified.
+         *
+         * The `address` argument is a string. If the value of `address` is a host name,
+         * DNS will be used to resolve the address of the host. If `address` is not
+         * provided or otherwise nullish, `'127.0.0.1'` (for `udp4` sockets) or `'::1'`(for `udp6` sockets) will be used by default.
+         *
+         * If the socket has not been previously bound with a call to `bind`, the socket
+         * is assigned a random port number and is bound to the "all interfaces" address
+         * (`'0.0.0.0'` for `udp4` sockets, `'::0'` for `udp6` sockets.)
+         *
+         * An optional `callback` function may be specified to as a way of reporting
+         * DNS errors or for determining when it is safe to reuse the `buf` object.
+         * DNS lookups delay the time to send for at least one tick of the
+         * Node.js event loop.
+         *
+         * The only way to know for sure that the datagram has been sent is by using a`callback`. If an error occurs and a `callback` is given, the error will be
+         * passed as the first argument to the `callback`. If a `callback` is not given,
+         * the error is emitted as an `'error'` event on the `socket` object.
+         *
+         * Offset and length are optional but both _must_ be set if either are used.
+         * They are supported only when the first argument is a `Buffer`, a `TypedArray`,
+         * or a `DataView`.
+         *
+         * This method throws `ERR_SOCKET_BAD_PORT` if called on an unbound socket.
+         *
+         * Example of sending a UDP packet to a port on `localhost`;
+         *
+         * ```js
+         * import dgram from 'dgram';
+         * import { Buffer } from 'buffer';
+         *
+         * const message = Buffer.from('Some bytes');
+         * const client = dgram.createSocket('udp4');
+         * client.send(message, 41234, 'localhost', (err) => {
+         *   client.close();
+         * });
+         * ```
+         *
+         * Example of sending a UDP packet composed of multiple buffers to a port on`127.0.0.1`;
+         *
+         * ```js
+         * import dgram from 'dgram';
+         * import { Buffer } from 'buffer';
+         *
+         * const buf1 = Buffer.from('Some ');
+         * const buf2 = Buffer.from('bytes');
+         * const client = dgram.createSocket('udp4');
+         * client.send([buf1, buf2], 41234, (err) => {
+         *   client.close();
+         * });
+         * ```
+         *
+         * Sending multiple buffers might be faster or slower depending on the
+         * application and operating system. Run benchmarks to
+         * determine the optimal strategy on a case-by-case basis. Generally speaking,
+         * however, sending multiple buffers is faster.
+         *
+         * Example of sending a UDP packet using a socket connected to a port on`localhost`:
+         *
+         * ```js
+         * import dgram from 'dgram';
+         * import { Buffer } from 'buffer';
+         *
+         * const message = Buffer.from('Some bytes');
+         * const client = dgram.createSocket('udp4');
+         * client.connect(41234, 'localhost', (err) => {
+         *   client.send(message, (err) => {
+         *     client.close();
+         *   });
+         * });
+         * ```
+         * @since v0.1.99
+         * @param msg Message to be sent.
+         * @param offset Offset in the buffer where the message starts.
+         * @param length Number of bytes in the message.
+         * @param port Destination port.
+         * @param address Destination host name or IP address.
+         * @param callback Called when the message has been sent.
+         */
+        send(msg: string | Uint8Array | ReadonlyArray<any>, port?: number, address?: string, callback?: (error: Error | null, bytes: number) => void): void;
+        send(msg: string | Uint8Array | ReadonlyArray<any>, port?: number, callback?: (error: Error | null, bytes: number) => void): void;
+        send(msg: string | Uint8Array | ReadonlyArray<any>, callback?: (error: Error | null, bytes: number) => void): void;
+        send(msg: string | Uint8Array, offset: number, length: number, port?: number, address?: string, callback?: (error: Error | null, bytes: number) => void): void;
+        send(msg: string | Uint8Array, offset: number, length: number, port?: number, callback?: (error: Error | null, bytes: number) => void): void;
+        send(msg: string | Uint8Array, offset: number, length: number, callback?: (error: Error | null, bytes: number) => void): void;
+        /**
+         * Sets or clears the `SO_BROADCAST` socket option. When set to `true`, UDP
+         * packets may be sent to a local interface's broadcast address.
+         *
+         * This method throws `EBADF` if called on an unbound socket.
+         * @since v0.6.9
+         */
+        setBroadcast(flag: boolean): void;
+        /**
+         * _All references to scope in this section are referring to [IPv6 Zone Indices](https://en.wikipedia.org/wiki/IPv6_address#Scoped_literal_IPv6_addresses), which are defined by [RFC
+         * 4007](https://tools.ietf.org/html/rfc4007). In string form, an IP_
+         * _with a scope index is written as `'IP%scope'` where scope is an interface name_
+         * _or interface number._
+         *
+         * Sets the default outgoing multicast interface of the socket to a chosen
+         * interface or back to system interface selection. The `multicastInterface` must
+         * be a valid string representation of an IP from the socket's family.
+         *
+         * For IPv4 sockets, this should be the IP configured for the desired physical
+         * interface. All packets sent to multicast on the socket will be sent on the
+         * interface determined by the most recent successful use of this call.
+         *
+         * For IPv6 sockets, `multicastInterface` should include a scope to indicate the
+         * interface as in the examples that follow. In IPv6, individual `send` calls can
+         * also use explicit scope in addresses, so only packets sent to a multicast
+         * address without specifying an explicit scope are affected by the most recent
+         * successful use of this call.
+         *
+         * This method throws `EBADF` if called on an unbound socket.
+         *
+         * #### Example: IPv6 outgoing multicast interface
+         *
+         * On most systems, where scope format uses the interface name:
+         *
+         * ```js
+         * const socket = dgram.createSocket('udp6');
+         *
+         * socket.bind(1234, () => {
+         *   socket.setMulticastInterface('::%eth1');
+         * });
+         * ```
+         *
+         * On Windows, where scope format uses an interface number:
+         *
+         * ```js
+         * const socket = dgram.createSocket('udp6');
+         *
+         * socket.bind(1234, () => {
+         *   socket.setMulticastInterface('::%2');
+         * });
+         * ```
+         *
+         * #### Example: IPv4 outgoing multicast interface
+         *
+         * All systems use an IP of the host on the desired physical interface:
+         *
+         * ```js
+         * const socket = dgram.createSocket('udp4');
+         *
+         * socket.bind(1234, () => {
+         *   socket.setMulticastInterface('10.0.0.2');
+         * });
+         * ```
+         * @since v8.6.0
+         */
+        setMulticastInterface(multicastInterface: string): void;
+        /**
+         * Sets or clears the `IP_MULTICAST_LOOP` socket option. When set to `true`,
+         * multicast packets will also be received on the local interface.
+         *
+         * This method throws `EBADF` if called on an unbound socket.
+         * @since v0.3.8
+         */
+        setMulticastLoopback(flag: boolean): boolean;
+        /**
+         * Sets the `IP_MULTICAST_TTL` socket option. While TTL generally stands for
+         * "Time to Live", in this context it specifies the number of IP hops that a
+         * packet is allowed to travel through, specifically for multicast traffic. Each
+         * router or gateway that forwards a packet decrements the TTL. If the TTL is
+         * decremented to 0 by a router, it will not be forwarded.
+         *
+         * The `ttl` argument may be between 0 and 255\. The default on most systems is `1`.
+         *
+         * This method throws `EBADF` if called on an unbound socket.
+         * @since v0.3.8
+         */
+        setMulticastTTL(ttl: number): number;
+        /**
+         * Sets the `SO_RCVBUF` socket option. Sets the maximum socket receive buffer
+         * in bytes.
+         *
+         * This method throws `ERR_SOCKET_BUFFER_SIZE` if called on an unbound socket.
+         * @since v8.7.0
+         */
+        setRecvBufferSize(size: number): void;
+        /**
+         * Sets the `SO_SNDBUF` socket option. Sets the maximum socket send buffer
+         * in bytes.
+         *
+         * This method throws `ERR_SOCKET_BUFFER_SIZE` if called on an unbound socket.
+         * @since v8.7.0
+         */
+        setSendBufferSize(size: number): void;
+        /**
+         * Sets the `IP_TTL` socket option. While TTL generally stands for "Time to Live",
+         * in this context it specifies the number of IP hops that a packet is allowed to
+         * travel through. Each router or gateway that forwards a packet decrements the
+         * TTL. If the TTL is decremented to 0 by a router, it will not be forwarded.
+         * Changing TTL values is typically done for network probes or when multicasting.
+         *
+         * The `ttl` argument may be between between 1 and 255\. The default on most systems
+         * is 64.
+         *
+         * This method throws `EBADF` if called on an unbound socket.
+         * @since v0.1.101
+         */
+        setTTL(ttl: number): number;
+        /**
+         * By default, binding a socket will cause it to block the Node.js process from
+         * exiting as long as the socket is open. The `socket.unref()` method can be used
+         * to exclude the socket from the reference counting that keeps the Node.js
+         * process active, allowing the process to exit even if the socket is still
+         * listening.
+         *
+         * Calling `socket.unref()` multiple times will have no addition effect.
+         *
+         * The `socket.unref()` method returns a reference to the socket so calls can be
+         * chained.
+         * @since v0.9.1
+         */
+        unref(): this;
+        /**
+         * Tells the kernel to join a source-specific multicast channel at the given`sourceAddress` and `groupAddress`, using the `multicastInterface` with the`IP_ADD_SOURCE_MEMBERSHIP` socket
+         * option. If the `multicastInterface` argument
+         * is not specified, the operating system will choose one interface and will add
+         * membership to it. To add membership to every available interface, call`socket.addSourceSpecificMembership()` multiple times, once per interface.
+         *
+         * When called on an unbound socket, this method will implicitly bind to a random
+         * port, listening on all interfaces.
+         * @since v13.1.0, v12.16.0
+         */
+        addSourceSpecificMembership(sourceAddress: string, groupAddress: string, multicastInterface?: string): void;
+        /**
+         * Instructs the kernel to leave a source-specific multicast channel at the given`sourceAddress` and `groupAddress` using the `IP_DROP_SOURCE_MEMBERSHIP`socket option. This method is
+         * automatically called by the kernel when the
+         * socket is closed or the process terminates, so most apps will never have
+         * reason to call this.
+         *
+         * If `multicastInterface` is not specified, the operating system will attempt to
+         * drop membership on all valid interfaces.
+         * @since v13.1.0, v12.16.0
+         */
+        dropSourceSpecificMembership(sourceAddress: string, groupAddress: string, multicastInterface?: string): void;
+        /**
+         * events.EventEmitter
+         * 1. close
+         * 2. connect
+         * 3. error
+         * 4. listening
+         * 5. message
+         */
+        addListener(event: string, listener: (...args: any[]) => void): this;
+        addListener(event: 'close', listener: () => void): this;
+        addListener(event: 'connect', listener: () => void): this;
+        addListener(event: 'error', listener: (err: Error) => void): this;
+        addListener(event: 'listening', listener: () => void): this;
+        addListener(event: 'message', listener: (msg: Buffer, rinfo: RemoteInfo) => void): this;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        emit(event: 'close'): boolean;
+        emit(event: 'connect'): boolean;
+        emit(event: 'error', err: Error): boolean;
+        emit(event: 'listening'): boolean;
+        emit(event: 'message', msg: Buffer, rinfo: RemoteInfo): boolean;
+        on(event: string, listener: (...args: any[]) => void): this;
+        on(event: 'close', listener: () => void): this;
+        on(event: 'connect', listener: () => void): this;
+        on(event: 'error', listener: (err: Error) => void): this;
+        on(event: 'listening', listener: () => void): this;
+        on(event: 'message', listener: (msg: Buffer, rinfo: RemoteInfo) => void): this;
+        once(event: string, listener: (...args: any[]) => void): this;
+        once(event: 'close', listener: () => void): this;
+        once(event: 'connect', listener: () => void): this;
+        once(event: 'error', listener: (err: Error) => void): this;
+        once(event: 'listening', listener: () => void): this;
+        once(event: 'message', listener: (msg: Buffer, rinfo: RemoteInfo) => void): this;
+        prependListener(event: string, listener: (...args: any[]) => void): this;
+        prependListener(event: 'close', listener: () => void): this;
+        prependListener(event: 'connect', listener: () => void): this;
+        prependListener(event: 'error', listener: (err: Error) => void): this;
+        prependListener(event: 'listening', listener: () => void): this;
+        prependListener(event: 'message', listener: (msg: Buffer, rinfo: RemoteInfo) => void): this;
+        prependOnceListener(event: string, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'close', listener: () => void): this;
+        prependOnceListener(event: 'connect', listener: () => void): this;
+        prependOnceListener(event: 'error', listener: (err: Error) => void): this;
+        prependOnceListener(event: 'listening', listener: () => void): this;
+        prependOnceListener(event: 'message', listener: (msg: Buffer, rinfo: RemoteInfo) => void): this;
+    }
+}
+declare module 'node:dgram' {
+    export * from 'dgram';
+}

backend/node_modules/@types/node/diagnostics_channel.d.ts

@@ -0,0 +1,134 @@
+/**
+ * The `diagnostics_channel` module provides an API to create named channels
+ * to report arbitrary message data for diagnostics purposes.
+ *
+ * It can be accessed using:
+ *
+ * ```js
+ * import diagnostics_channel from 'diagnostics_channel';
+ * ```
+ *
+ * It is intended that a module writer wanting to report diagnostics messages
+ * will create one or many top-level channels to report messages through.
+ * Channels may also be acquired at runtime but it is not encouraged
+ * due to the additional overhead of doing so. Channels may be exported for
+ * convenience, but as long as the name is known it can be acquired anywhere.
+ *
+ * If you intend for your module to produce diagnostics data for others to
+ * consume it is recommended that you include documentation of what named
+ * channels are used along with the shape of the message data. Channel names
+ * should generally include the module name to avoid collisions with data from
+ * other modules.
+ * @experimental
+ * @see [source](https://github.com/nodejs/node/blob/v17.0.0/lib/diagnostics_channel.js)
+ */
+declare module 'diagnostics_channel' {
+    /**
+     * Check if there are active subscribers to the named channel. This is helpful if
+     * the message you want to send might be expensive to prepare.
+     *
+     * This API is optional but helpful when trying to publish messages from very
+     * performance-sensitive code.
+     *
+     * ```js
+     * import diagnostics_channel from 'diagnostics_channel';
+     *
+     * if (diagnostics_channel.hasSubscribers('my-channel')) {
+     *   // There are subscribers, prepare and publish message
+     * }
+     * ```
+     * @since v15.1.0, v14.17.0
+     * @param name The channel name
+     * @return If there are active subscribers
+     */
+    function hasSubscribers(name: string): boolean;
+    /**
+     * This is the primary entry-point for anyone wanting to interact with a named
+     * channel. It produces a channel object which is optimized to reduce overhead at
+     * publish time as much as possible.
+     *
+     * ```js
+     * import diagnostics_channel from 'diagnostics_channel';
+     *
+     * const channel = diagnostics_channel.channel('my-channel');
+     * ```
+     * @since v15.1.0, v14.17.0
+     * @param name The channel name
+     * @return The named channel object
+     */
+    function channel(name: string): Channel;
+    type ChannelListener = (name: string, message: unknown) => void;
+    /**
+     * The class `Channel` represents an individual named channel within the data
+     * pipeline. It is use to track subscribers and to publish messages when there
+     * are subscribers present. It exists as a separate object to avoid channel
+     * lookups at publish time, enabling very fast publish speeds and allowing
+     * for heavy use while incurring very minimal cost. Channels are created with {@link channel}, constructing a channel directly
+     * with `new Channel(name)` is not supported.
+     * @since v15.1.0, v14.17.0
+     */
+    class Channel {
+        readonly name: string;
+        /**
+         * Check if there are active subscribers to this channel. This is helpful if
+         * the message you want to send might be expensive to prepare.
+         *
+         * This API is optional but helpful when trying to publish messages from very
+         * performance-sensitive code.
+         *
+         * ```js
+         * import diagnostics_channel from 'diagnostics_channel';
+         *
+         * const channel = diagnostics_channel.channel('my-channel');
+         *
+         * if (channel.hasSubscribers) {
+         *   // There are subscribers, prepare and publish message
+         * }
+         * ```
+         * @since v15.1.0, v14.17.0
+         */
+        readonly hasSubscribers: boolean;
+        private constructor(name: string);
+        /**
+         * Register a message handler to subscribe to this channel. This message handler
+         * will be run synchronously whenever a message is published to the channel. Any
+         * errors thrown in the message handler will trigger an `'uncaughtException'`.
+         *
+         * ```js
+         * import diagnostics_channel from 'diagnostics_channel';
+         *
+         * const channel = diagnostics_channel.channel('my-channel');
+         *
+         * channel.subscribe((message, name) => {
+         *   // Received data
+         * });
+         * ```
+         * @since v15.1.0, v14.17.0
+         * @param onMessage The handler to receive channel messages
+         */
+        subscribe(onMessage: ChannelListener): void;
+        /**
+         * Remove a message handler previously registered to this channel with `channel.subscribe(onMessage)`.
+         *
+         * ```js
+         * import diagnostics_channel from 'diagnostics_channel';
+         *
+         * const channel = diagnostics_channel.channel('my-channel');
+         *
+         * function onMessage(message, name) {
+         *   // Received data
+         * }
+         *
+         * channel.subscribe(onMessage);
+         *
+         * channel.unsubscribe(onMessage);
+         * ```
+         * @since v15.1.0, v14.17.0
+         * @param onMessage The previous subscribed handler to remove
+         */
+        unsubscribe(onMessage: ChannelListener): void;
+    }
+}
+declare module 'node:diagnostics_channel' {
+    export * from 'diagnostics_channel';
+}

backend/node_modules/@types/node/dns.d.ts

@@ -0,0 +1,659 @@
+/**
+ * The `dns` module enables name resolution. For example, use it to look up IP
+ * addresses of host names.
+ *
+ * Although named for the [Domain Name System (DNS)](https://en.wikipedia.org/wiki/Domain_Name_System), it does not always use the
+ * DNS protocol for lookups. {@link lookup} uses the operating system
+ * facilities to perform name resolution. It may not need to perform any network
+ * communication. To perform name resolution the way other applications on the same
+ * system do, use {@link lookup}.
+ *
+ * ```js
+ * const dns = require('dns');
+ *
+ * dns.lookup('example.org', (err, address, family) => {
+ *   console.log('address: %j family: IPv%s', address, family);
+ * });
+ * // address: "93.184.216.34" family: IPv4
+ * ```
+ *
+ * All other functions in the `dns` module connect to an actual DNS server to
+ * perform name resolution. They will always use the network to perform DNS
+ * queries. These functions do not use the same set of configuration files used by {@link lookup} (e.g. `/etc/hosts`). Use these functions to always perform
+ * DNS queries, bypassing other name-resolution facilities.
+ *
+ * ```js
+ * const dns = require('dns');
+ *
+ * dns.resolve4('archive.org', (err, addresses) => {
+ *   if (err) throw err;
+ *
+ *   console.log(`addresses: ${JSON.stringify(addresses)}`);
+ *
+ *   addresses.forEach((a) => {
+ *     dns.reverse(a, (err, hostnames) => {
+ *       if (err) {
+ *         throw err;
+ *       }
+ *       console.log(`reverse for ${a}: ${JSON.stringify(hostnames)}`);
+ *     });
+ *   });
+ * });
+ * ```
+ *
+ * See the `Implementation considerations section` for more information.
+ * @see [source](https://github.com/nodejs/node/blob/v17.0.0/lib/dns.js)
+ */
+declare module 'dns' {
+    import * as dnsPromises from 'node:dns/promises';
+    // Supported getaddrinfo flags.
+    export const ADDRCONFIG: number;
+    export const V4MAPPED: number;
+    /**
+     * If `dns.V4MAPPED` is specified, return resolved IPv6 addresses as
+     * well as IPv4 mapped IPv6 addresses.
+     */
+    export const ALL: number;
+    export interface LookupOptions {
+        family?: number | undefined;
+        hints?: number | undefined;
+        all?: boolean | undefined;
+        /**
+         * @default true
+         */
+        verbatim?: boolean | undefined;
+    }
+    export interface LookupOneOptions extends LookupOptions {
+        all?: false | undefined;
+    }
+    export interface LookupAllOptions extends LookupOptions {
+        all: true;
+    }
+    export interface LookupAddress {
+        address: string;
+        family: number;
+    }
+    /**
+     * Resolves a host name (e.g. `'nodejs.org'`) into the first found A (IPv4) or
+     * AAAA (IPv6) record. All `option` properties are optional. If `options` is an
+     * integer, then it must be `4` or `6` – if `options` is not provided, then IPv4
+     * and IPv6 addresses are both returned if found.
+     *
+     * With the `all` option set to `true`, the arguments for `callback` change to`(err, addresses)`, with `addresses` being an array of objects with the
+     * properties `address` and `family`.
+     *
+     * On error, `err` is an `Error` object, where `err.code` is the error code.
+     * Keep in mind that `err.code` will be set to `'ENOTFOUND'` not only when
+     * the host name does not exist but also when the lookup fails in other ways
+     * such as no available file descriptors.
+     *
+     * `dns.lookup()` does not necessarily have anything to do with the DNS protocol.
+     * The implementation uses an operating system facility that can associate names
+     * with addresses, and vice versa. This implementation can have subtle but
+     * important consequences on the behavior of any Node.js program. Please take some
+     * time to consult the `Implementation considerations section` before using`dns.lookup()`.
+     *
+     * Example usage:
+     *
+     * ```js
+     * const dns = require('dns');
+     * const options = {
+     *   family: 6,
+     *   hints: dns.ADDRCONFIG | dns.V4MAPPED,
+     * };
+     * dns.lookup('example.com', options, (err, address, family) =>
+     *   console.log('address: %j family: IPv%s', address, family));
+     * // address: "2606:2800:220:1:248:1893:25c8:1946" family: IPv6
+     *
+     * // When options.all is true, the result will be an Array.
+     * options.all = true;
+     * dns.lookup('example.com', options, (err, addresses) =>
+     *   console.log('addresses: %j', addresses));
+     * // addresses: [{"address":"2606:2800:220:1:248:1893:25c8:1946","family":6}]
+     * ```
+     *
+     * If this method is invoked as its `util.promisify()` ed version, and `all`is not set to `true`, it returns a `Promise` for an `Object` with `address` and`family` properties.
+     * @since v0.1.90
+     */
+    export function lookup(hostname: string, family: number, callback: (err: NodeJS.ErrnoException | null, address: string, family: number) => void): void;
+    export function lookup(hostname: string, options: LookupOneOptions, callback: (err: NodeJS.ErrnoException | null, address: string, family: number) => void): void;
+    export function lookup(hostname: string, options: LookupAllOptions, callback: (err: NodeJS.ErrnoException | null, addresses: LookupAddress[]) => void): void;
+    export function lookup(hostname: string, options: LookupOptions, callback: (err: NodeJS.ErrnoException | null, address: string | LookupAddress[], family: number) => void): void;
+    export function lookup(hostname: string, callback: (err: NodeJS.ErrnoException | null, address: string, family: number) => void): void;
+    export namespace lookup {
+        function __promisify__(hostname: string, options: LookupAllOptions): Promise<LookupAddress[]>;
+        function __promisify__(hostname: string, options?: LookupOneOptions | number): Promise<LookupAddress>;
+        function __promisify__(hostname: string, options: LookupOptions): Promise<LookupAddress | LookupAddress[]>;
+    }
+    /**
+     * Resolves the given `address` and `port` into a host name and service using
+     * the operating system's underlying `getnameinfo` implementation.
+     *
+     * If `address` is not a valid IP address, a `TypeError` will be thrown.
+     * The `port` will be coerced to a number. If it is not a legal port, a `TypeError`will be thrown.
+     *
+     * On an error, `err` is an `Error` object, where `err.code` is the error code.
+     *
+     * ```js
+     * const dns = require('dns');
+     * dns.lookupService('127.0.0.1', 22, (err, hostname, service) => {
+     *   console.log(hostname, service);
+     *   // Prints: localhost ssh
+     * });
+     * ```
+     *
+     * If this method is invoked as its `util.promisify()` ed version, it returns a`Promise` for an `Object` with `hostname` and `service` properties.
+     * @since v0.11.14
+     */
+    export function lookupService(address: string, port: number, callback: (err: NodeJS.ErrnoException | null, hostname: string, service: string) => void): void;
+    export namespace lookupService {
+        function __promisify__(
+            address: string,
+            port: number
+        ): Promise<{
+            hostname: string;
+            service: string;
+        }>;
+    }
+    export interface ResolveOptions {
+        ttl: boolean;
+    }
+    export interface ResolveWithTtlOptions extends ResolveOptions {
+        ttl: true;
+    }
+    export interface RecordWithTtl {
+        address: string;
+        ttl: number;
+    }
+    /** @deprecated Use `AnyARecord` or `AnyAaaaRecord` instead. */
+    export type AnyRecordWithTtl = AnyARecord | AnyAaaaRecord;
+    export interface AnyARecord extends RecordWithTtl {
+        type: 'A';
+    }
+    export interface AnyAaaaRecord extends RecordWithTtl {
+        type: 'AAAA';
+    }
+    export interface CaaRecord {
+        critial: number;
+        issue?: string | undefined;
+        issuewild?: string | undefined;
+        iodef?: string | undefined;
+        contactemail?: string | undefined;
+        contactphone?: string | undefined;
+    }
+    export interface MxRecord {
+        priority: number;
+        exchange: string;
+    }
+    export interface AnyMxRecord extends MxRecord {
+        type: 'MX';
+    }
+    export interface NaptrRecord {
+        flags: string;
+        service: string;
+        regexp: string;
+        replacement: string;
+        order: number;
+        preference: number;
+    }
+    export interface AnyNaptrRecord extends NaptrRecord {
+        type: 'NAPTR';
+    }
+    export interface SoaRecord {
+        nsname: string;
+        hostmaster: string;
+        serial: number;
+        refresh: number;
+        retry: number;
+        expire: number;
+        minttl: number;
+    }
+    export interface AnySoaRecord extends SoaRecord {
+        type: 'SOA';
+    }
+    export interface SrvRecord {
+        priority: number;
+        weight: number;
+        port: number;
+        name: string;
+    }
+    export interface AnySrvRecord extends SrvRecord {
+        type: 'SRV';
+    }
+    export interface AnyTxtRecord {
+        type: 'TXT';
+        entries: string[];
+    }
+    export interface AnyNsRecord {
+        type: 'NS';
+        value: string;
+    }
+    export interface AnyPtrRecord {
+        type: 'PTR';
+        value: string;
+    }
+    export interface AnyCnameRecord {
+        type: 'CNAME';
+        value: string;
+    }
+    export type AnyRecord = AnyARecord | AnyAaaaRecord | AnyCnameRecord | AnyMxRecord | AnyNaptrRecord | AnyNsRecord | AnyPtrRecord | AnySoaRecord | AnySrvRecord | AnyTxtRecord;
+    /**
+     * Uses the DNS protocol to resolve a host name (e.g. `'nodejs.org'`) into an array
+     * of the resource records. The `callback` function has arguments`(err, records)`. When successful, `records` will be an array of resource
+     * records. The type and structure of individual results varies based on `rrtype`:
+     *
+     * <omitted>
+     *
+     * On error, `err` is an `Error` object, where `err.code` is one of theDNS error codes.
+     * @since v0.1.27
+     * @param hostname Host name to resolve.
+     * @param [rrtype='A'] Resource record type.
+     */
+    export function resolve(hostname: string, callback: (err: NodeJS.ErrnoException | null, addresses: string[]) => void): void;
+    export function resolve(hostname: string, rrtype: 'A', callback: (err: NodeJS.ErrnoException | null, addresses: string[]) => void): void;
+    export function resolve(hostname: string, rrtype: 'AAAA', callback: (err: NodeJS.ErrnoException | null, addresses: string[]) => void): void;
+    export function resolve(hostname: string, rrtype: 'ANY', callback: (err: NodeJS.ErrnoException | null, addresses: AnyRecord[]) => void): void;
+    export function resolve(hostname: string, rrtype: 'CNAME', callback: (err: NodeJS.ErrnoException | null, addresses: string[]) => void): void;
+    export function resolve(hostname: string, rrtype: 'MX', callback: (err: NodeJS.ErrnoException | null, addresses: MxRecord[]) => void): void;
+    export function resolve(hostname: string, rrtype: 'NAPTR', callback: (err: NodeJS.ErrnoException | null, addresses: NaptrRecord[]) => void): void;
+    export function resolve(hostname: string, rrtype: 'NS', callback: (err: NodeJS.ErrnoException | null, addresses: string[]) => void): void;
+    export function resolve(hostname: string, rrtype: 'PTR', callback: (err: NodeJS.ErrnoException | null, addresses: string[]) => void): void;
+    export function resolve(hostname: string, rrtype: 'SOA', callback: (err: NodeJS.ErrnoException | null, addresses: SoaRecord) => void): void;
+    export function resolve(hostname: string, rrtype: 'SRV', callback: (err: NodeJS.ErrnoException | null, addresses: SrvRecord[]) => void): void;
+    export function resolve(hostname: string, rrtype: 'TXT', callback: (err: NodeJS.ErrnoException | null, addresses: string[][]) => void): void;
+    export function resolve(
+        hostname: string,
+        rrtype: string,
+        callback: (err: NodeJS.ErrnoException | null, addresses: string[] | MxRecord[] | NaptrRecord[] | SoaRecord | SrvRecord[] | string[][] | AnyRecord[]) => void
+    ): void;
+    export namespace resolve {
+        function __promisify__(hostname: string, rrtype?: 'A' | 'AAAA' | 'CNAME' | 'NS' | 'PTR'): Promise<string[]>;
+        function __promisify__(hostname: string, rrtype: 'ANY'): Promise<AnyRecord[]>;
+        function __promisify__(hostname: string, rrtype: 'MX'): Promise<MxRecord[]>;
+        function __promisify__(hostname: string, rrtype: 'NAPTR'): Promise<NaptrRecord[]>;
+        function __promisify__(hostname: string, rrtype: 'SOA'): Promise<SoaRecord>;
+        function __promisify__(hostname: string, rrtype: 'SRV'): Promise<SrvRecord[]>;
+        function __promisify__(hostname: string, rrtype: 'TXT'): Promise<string[][]>;
+        function __promisify__(hostname: string, rrtype: string): Promise<string[] | MxRecord[] | NaptrRecord[] | SoaRecord | SrvRecord[] | string[][] | AnyRecord[]>;
+    }
+    /**
+     * Uses the DNS protocol to resolve a IPv4 addresses (`A` records) for the`hostname`. The `addresses` argument passed to the `callback` function
+     * will contain an array of IPv4 addresses (e.g.`['74.125.79.104', '74.125.79.105', '74.125.79.106']`).
+     * @since v0.1.16
+     * @param hostname Host name to resolve.
+     */
+    export function resolve4(hostname: string, callback: (err: NodeJS.ErrnoException | null, addresses: string[]) => void): void;
+    export function resolve4(hostname: string, options: ResolveWithTtlOptions, callback: (err: NodeJS.ErrnoException | null, addresses: RecordWithTtl[]) => void): void;
+    export function resolve4(hostname: string, options: ResolveOptions, callback: (err: NodeJS.ErrnoException | null, addresses: string[] | RecordWithTtl[]) => void): void;
+    export namespace resolve4 {
+        function __promisify__(hostname: string): Promise<string[]>;
+        function __promisify__(hostname: string, options: ResolveWithTtlOptions): Promise<RecordWithTtl[]>;
+        function __promisify__(hostname: string, options?: ResolveOptions): Promise<string[] | RecordWithTtl[]>;
+    }
+    /**
+     * Uses the DNS protocol to resolve a IPv6 addresses (`AAAA` records) for the`hostname`. The `addresses` argument passed to the `callback` function
+     * will contain an array of IPv6 addresses.
+     * @since v0.1.16
+     * @param hostname Host name to resolve.
+     */
+    export function resolve6(hostname: string, callback: (err: NodeJS.ErrnoException | null, addresses: string[]) => void): void;
+    export function resolve6(hostname: string, options: ResolveWithTtlOptions, callback: (err: NodeJS.ErrnoException | null, addresses: RecordWithTtl[]) => void): void;
+    export function resolve6(hostname: string, options: ResolveOptions, callback: (err: NodeJS.ErrnoException | null, addresses: string[] | RecordWithTtl[]) => void): void;
+    export namespace resolve6 {
+        function __promisify__(hostname: string): Promise<string[]>;
+        function __promisify__(hostname: string, options: ResolveWithTtlOptions): Promise<RecordWithTtl[]>;
+        function __promisify__(hostname: string, options?: ResolveOptions): Promise<string[] | RecordWithTtl[]>;
+    }
+    /**
+     * Uses the DNS protocol to resolve `CNAME` records for the `hostname`. The`addresses` argument passed to the `callback` function
+     * will contain an array of canonical name records available for the `hostname`(e.g. `['bar.example.com']`).
+     * @since v0.3.2
+     */
+    export function resolveCname(hostname: string, callback: (err: NodeJS.ErrnoException | null, addresses: string[]) => void): void;
+    export namespace resolveCname {
+        function __promisify__(hostname: string): Promise<string[]>;
+    }
+    /**
+     * Uses the DNS protocol to resolve `CAA` records for the `hostname`. The`addresses` argument passed to the `callback` function
+     * will contain an array of certification authority authorization records
+     * available for the `hostname` (e.g. `[{critical: 0, iodef: 'mailto:pki@example.com'}, {critical: 128, issue: 'pki.example.com'}]`).
+     * @since v15.0.0, v14.17.0
+     */
+    export function resolveCaa(hostname: string, callback: (err: NodeJS.ErrnoException | null, records: CaaRecord[]) => void): void;
+    export namespace resolveCaa {
+        function __promisify__(hostname: string): Promise<CaaRecord[]>;
+    }
+    /**
+     * Uses the DNS protocol to resolve mail exchange records (`MX` records) for the`hostname`. The `addresses` argument passed to the `callback` function will
+     * contain an array of objects containing both a `priority` and `exchange`property (e.g. `[{priority: 10, exchange: 'mx.example.com'}, ...]`).
+     * @since v0.1.27
+     */
+    export function resolveMx(hostname: string, callback: (err: NodeJS.ErrnoException | null, addresses: MxRecord[]) => void): void;
+    export namespace resolveMx {
+        function __promisify__(hostname: string): Promise<MxRecord[]>;
+    }
+    /**
+     * Uses the DNS protocol to resolve regular expression based records (`NAPTR`records) for the `hostname`. The `addresses` argument passed to the `callback`function will contain an array of
+     * objects with the following properties:
+     *
+     * * `flags`
+     * * `service`
+     * * `regexp`
+     * * `replacement`
+     * * `order`
+     * * `preference`
+     *
+     * ```js
+     * {
+     *   flags: 's',
+     *   service: 'SIP+D2U',
+     *   regexp: '',
+     *   replacement: '_sip._udp.example.com',
+     *   order: 30,
+     *   preference: 100
+     * }
+     * ```
+     * @since v0.9.12
+     */
+    export function resolveNaptr(hostname: string, callback: (err: NodeJS.ErrnoException | null, addresses: NaptrRecord[]) => void): void;
+    export namespace resolveNaptr {
+        function __promisify__(hostname: string): Promise<NaptrRecord[]>;
+    }
+    /**
+     * Uses the DNS protocol to resolve name server records (`NS` records) for the`hostname`. The `addresses` argument passed to the `callback` function will
+     * contain an array of name server records available for `hostname`(e.g. `['ns1.example.com', 'ns2.example.com']`).
+     * @since v0.1.90
+     */
+    export function resolveNs(hostname: string, callback: (err: NodeJS.ErrnoException | null, addresses: string[]) => void): void;
+    export namespace resolveNs {
+        function __promisify__(hostname: string): Promise<string[]>;
+    }
+    /**
+     * Uses the DNS protocol to resolve pointer records (`PTR` records) for the`hostname`. The `addresses` argument passed to the `callback` function will
+     * be an array of strings containing the reply records.
+     * @since v6.0.0
+     */
+    export function resolvePtr(hostname: string, callback: (err: NodeJS.ErrnoException | null, addresses: string[]) => void): void;
+    export namespace resolvePtr {
+        function __promisify__(hostname: string): Promise<string[]>;
+    }
+    /**
+     * Uses the DNS protocol to resolve a start of authority record (`SOA` record) for
+     * the `hostname`. The `address` argument passed to the `callback` function will
+     * be an object with the following properties:
+     *
+     * * `nsname`
+     * * `hostmaster`
+     * * `serial`
+     * * `refresh`
+     * * `retry`
+     * * `expire`
+     * * `minttl`
+     *
+     * ```js
+     * {
+     *   nsname: 'ns.example.com',
+     *   hostmaster: 'root.example.com',
+     *   serial: 2013101809,
+     *   refresh: 10000,
+     *   retry: 2400,
+     *   expire: 604800,
+     *   minttl: 3600
+     * }
+     * ```
+     * @since v0.11.10
+     */
+    export function resolveSoa(hostname: string, callback: (err: NodeJS.ErrnoException | null, address: SoaRecord) => void): void;
+    export namespace resolveSoa {
+        function __promisify__(hostname: string): Promise<SoaRecord>;
+    }
+    /**
+     * Uses the DNS protocol to resolve service records (`SRV` records) for the`hostname`. The `addresses` argument passed to the `callback` function will
+     * be an array of objects with the following properties:
+     *
+     * * `priority`
+     * * `weight`
+     * * `port`
+     * * `name`
+     *
+     * ```js
+     * {
+     *   priority: 10,
+     *   weight: 5,
+     *   port: 21223,
+     *   name: 'service.example.com'
+     * }
+     * ```
+     * @since v0.1.27
+     */
+    export function resolveSrv(hostname: string, callback: (err: NodeJS.ErrnoException | null, addresses: SrvRecord[]) => void): void;
+    export namespace resolveSrv {
+        function __promisify__(hostname: string): Promise<SrvRecord[]>;
+    }
+    /**
+     * Uses the DNS protocol to resolve text queries (`TXT` records) for the`hostname`. The `records` argument passed to the `callback` function is a
+     * two-dimensional array of the text records available for `hostname` (e.g.`[ ['v=spf1 ip4:0.0.0.0 ', '~all' ] ]`). Each sub-array contains TXT chunks of
+     * one record. Depending on the use case, these could be either joined together or
+     * treated separately.
+     * @since v0.1.27
+     */
+    export function resolveTxt(hostname: string, callback: (err: NodeJS.ErrnoException | null, addresses: string[][]) => void): void;
+    export namespace resolveTxt {
+        function __promisify__(hostname: string): Promise<string[][]>;
+    }
+    /**
+     * Uses the DNS protocol to resolve all records (also known as `ANY` or `*` query).
+     * The `ret` argument passed to the `callback` function will be an array containing
+     * various types of records. Each object has a property `type` that indicates the
+     * type of the current record. And depending on the `type`, additional properties
+     * will be present on the object:
+     *
+     * <omitted>
+     *
+     * Here is an example of the `ret` object passed to the callback:
+     *
+     * ```js
+     * [ { type: 'A', address: '127.0.0.1', ttl: 299 },
+     *   { type: 'CNAME', value: 'example.com' },
+     *   { type: 'MX', exchange: 'alt4.aspmx.l.example.com', priority: 50 },
+     *   { type: 'NS', value: 'ns1.example.com' },
+     *   { type: 'TXT', entries: [ 'v=spf1 include:_spf.example.com ~all' ] },
+     *   { type: 'SOA',
+     *     nsname: 'ns1.example.com',
+     *     hostmaster: 'admin.example.com',
+     *     serial: 156696742,
+     *     refresh: 900,
+     *     retry: 900,
+     *     expire: 1800,
+     *     minttl: 60 } ]
+     * ```
+     *
+     * DNS server operators may choose not to respond to `ANY`queries. It may be better to call individual methods like {@link resolve4},{@link resolveMx}, and so on. For more details, see [RFC
+     * 8482](https://tools.ietf.org/html/rfc8482).
+     */
+    export function resolveAny(hostname: string, callback: (err: NodeJS.ErrnoException | null, addresses: AnyRecord[]) => void): void;
+    export namespace resolveAny {
+        function __promisify__(hostname: string): Promise<AnyRecord[]>;
+    }
+    /**
+     * Performs a reverse DNS query that resolves an IPv4 or IPv6 address to an
+     * array of host names.
+     *
+     * On error, `err` is an `Error` object, where `err.code` is
+     * one of the `DNS error codes`.
+     * @since v0.1.16
+     */
+    export function reverse(ip: string, callback: (err: NodeJS.ErrnoException | null, hostnames: string[]) => void): void;
+    /**
+     * Sets the IP address and port of servers to be used when performing DNS
+     * resolution. The `servers` argument is an array of [RFC 5952](https://tools.ietf.org/html/rfc5952#section-6) formatted
+     * addresses. If the port is the IANA default DNS port (53) it can be omitted.
+     *
+     * ```js
+     * dns.setServers([
+     *   '4.4.4.4',
+     *   '[2001:4860:4860::8888]',
+     *   '4.4.4.4:1053',
+     *   '[2001:4860:4860::8888]:1053',
+     * ]);
+     * ```
+     *
+     * An error will be thrown if an invalid address is provided.
+     *
+     * The `dns.setServers()` method must not be called while a DNS query is in
+     * progress.
+     *
+     * The {@link setServers} method affects only {@link resolve},`dns.resolve*()` and {@link reverse} (and specifically _not_ {@link lookup}).
+     *
+     * This method works much like [resolve.conf](https://man7.org/linux/man-pages/man5/resolv.conf.5.html).
+     * That is, if attempting to resolve with the first server provided results in a`NOTFOUND` error, the `resolve()` method will _not_ attempt to resolve with
+     * subsequent servers provided. Fallback DNS servers will only be used if the
+     * earlier ones time out or result in some other error.
+     * @since v0.11.3
+     * @param servers array of `RFC 5952` formatted addresses
+     */
+    export function setServers(servers: ReadonlyArray<string>): void;
+    /**
+     * Returns an array of IP address strings, formatted according to [RFC 5952](https://tools.ietf.org/html/rfc5952#section-6),
+     * that are currently configured for DNS resolution. A string will include a port
+     * section if a custom port is used.
+     *
+     * ```js
+     * [
+     *   '4.4.4.4',
+     *   '2001:4860:4860::8888',
+     *   '4.4.4.4:1053',
+     *   '[2001:4860:4860::8888]:1053',
+     * ]
+     * ```
+     * @since v0.11.3
+     */
+    export function getServers(): string[];
+    /**
+     * Set the default value of `verbatim` in {@link lookup} and `dnsPromises.lookup()`. The value could be:
+     *
+     * * `ipv4first`: sets default `verbatim` `false`.
+     * * `verbatim`: sets default `verbatim` `true`.
+     *
+     * The default is `ipv4first` and {@link setDefaultResultOrder} have higher
+     * priority than `--dns-result-order`. When using `worker threads`,{@link setDefaultResultOrder} from the main thread won't affect the default
+     * dns orders in workers.
+     * @since v16.4.0, v14.18.0
+     * @param order must be `'ipv4first'` or `'verbatim'`.
+     */
+    export function setDefaultResultOrder(order: 'ipv4first' | 'verbatim'): void;
+    // Error codes
+    export const NODATA: string;
+    export const FORMERR: string;
+    export const SERVFAIL: string;
+    export const NOTFOUND: string;
+    export const NOTIMP: string;
+    export const REFUSED: string;
+    export const BADQUERY: string;
+    export const BADNAME: string;
+    export const BADFAMILY: string;
+    export const BADRESP: string;
+    export const CONNREFUSED: string;
+    export const TIMEOUT: string;
+    export const EOF: string;
+    export const FILE: string;
+    export const NOMEM: string;
+    export const DESTRUCTION: string;
+    export const BADSTR: string;
+    export const BADFLAGS: string;
+    export const NONAME: string;
+    export const BADHINTS: string;
+    export const NOTINITIALIZED: string;
+    export const LOADIPHLPAPI: string;
+    export const ADDRGETNETWORKPARAMS: string;
+    export const CANCELLED: string;
+    export interface ResolverOptions {
+        timeout?: number | undefined;
+        /**
+         * @default 4
+         */
+        tries?: number;
+    }
+    /**
+     * An independent resolver for DNS requests.
+     *
+     * Creating a new resolver uses the default server settings. Setting
+     * the servers used for a resolver using `resolver.setServers()` does not affect
+     * other resolvers:
+     *
+     * ```js
+     * const { Resolver } = require('dns');
+     * const resolver = new Resolver();
+     * resolver.setServers(['4.4.4.4']);
+     *
+     * // This request will use the server at 4.4.4.4, independent of global settings.
+     * resolver.resolve4('example.org', (err, addresses) => {
+     *   // ...
+     * });
+     * ```
+     *
+     * The following methods from the `dns` module are available:
+     *
+     * * `resolver.getServers()`
+     * * `resolver.resolve()`
+     * * `resolver.resolve4()`
+     * * `resolver.resolve6()`
+     * * `resolver.resolveAny()`
+     * * `resolver.resolveCaa()`
+     * * `resolver.resolveCname()`
+     * * `resolver.resolveMx()`
+     * * `resolver.resolveNaptr()`
+     * * `resolver.resolveNs()`
+     * * `resolver.resolvePtr()`
+     * * `resolver.resolveSoa()`
+     * * `resolver.resolveSrv()`
+     * * `resolver.resolveTxt()`
+     * * `resolver.reverse()`
+     * * `resolver.setServers()`
+     * @since v8.3.0
+     */
+    export class Resolver {
+        constructor(options?: ResolverOptions);
+        /**
+         * Cancel all outstanding DNS queries made by this resolver. The corresponding
+         * callbacks will be called with an error with code `ECANCELLED`.
+         * @since v8.3.0
+         */
+        cancel(): void;
+        getServers: typeof getServers;
+        resolve: typeof resolve;
+        resolve4: typeof resolve4;
+        resolve6: typeof resolve6;
+        resolveAny: typeof resolveAny;
+        resolveCname: typeof resolveCname;
+        resolveMx: typeof resolveMx;
+        resolveNaptr: typeof resolveNaptr;
+        resolveNs: typeof resolveNs;
+        resolvePtr: typeof resolvePtr;
+        resolveSoa: typeof resolveSoa;
+        resolveSrv: typeof resolveSrv;
+        resolveTxt: typeof resolveTxt;
+        reverse: typeof reverse;
+        /**
+         * The resolver instance will send its requests from the specified IP address.
+         * This allows programs to specify outbound interfaces when used on multi-homed
+         * systems.
+         *
+         * If a v4 or v6 address is not specified, it is set to the default, and the
+         * operating system will choose a local address automatically.
+         *
+         * The resolver will use the v4 local address when making requests to IPv4 DNS
+         * servers, and the v6 local address when making requests to IPv6 DNS servers.
+         * The `rrtype` of resolution requests has no impact on the local address used.
+         * @since v15.1.0, v14.17.0
+         * @param [ipv4='0.0.0.0'] A string representation of an IPv4 address.
+         * @param [ipv6='::0'] A string representation of an IPv6 address.
+         */
+        setLocalAddress(ipv4?: string, ipv6?: string): void;
+        setServers: typeof setServers;
+    }
+    export { dnsPromises as promises };
+}
+declare module 'node:dns' {
+    export * from 'dns';
+}

backend/node_modules/@types/node/dns/promises.d.ts

@@ -0,0 +1,370 @@
+/**
+ * The `dns.promises` API provides an alternative set of asynchronous DNS methods
+ * that return `Promise` objects rather than using callbacks. The API is accessible
+ * via `require('dns').promises` or `require('dns/promises')`.
+ * @since v10.6.0
+ */
+declare module 'dns/promises' {
+    import {
+        LookupAddress,
+        LookupOneOptions,
+        LookupAllOptions,
+        LookupOptions,
+        AnyRecord,
+        CaaRecord,
+        MxRecord,
+        NaptrRecord,
+        SoaRecord,
+        SrvRecord,
+        ResolveWithTtlOptions,
+        RecordWithTtl,
+        ResolveOptions,
+        ResolverOptions,
+    } from 'node:dns';
+    /**
+     * Returns an array of IP address strings, formatted according to [RFC 5952](https://tools.ietf.org/html/rfc5952#section-6),
+     * that are currently configured for DNS resolution. A string will include a port
+     * section if a custom port is used.
+     *
+     * ```js
+     * [
+     *   '4.4.4.4',
+     *   '2001:4860:4860::8888',
+     *   '4.4.4.4:1053',
+     *   '[2001:4860:4860::8888]:1053',
+     * ]
+     * ```
+     * @since v10.6.0
+     */
+    function getServers(): string[];
+    /**
+     * Resolves a host name (e.g. `'nodejs.org'`) into the first found A (IPv4) or
+     * AAAA (IPv6) record. All `option` properties are optional. If `options` is an
+     * integer, then it must be `4` or `6` – if `options` is not provided, then IPv4
+     * and IPv6 addresses are both returned if found.
+     *
+     * With the `all` option set to `true`, the `Promise` is resolved with `addresses`being an array of objects with the properties `address` and `family`.
+     *
+     * On error, the `Promise` is rejected with an `Error` object, where `err.code`is the error code.
+     * Keep in mind that `err.code` will be set to `'ENOTFOUND'` not only when
+     * the host name does not exist but also when the lookup fails in other ways
+     * such as no available file descriptors.
+     *
+     * `dnsPromises.lookup()` does not necessarily have anything to do with the DNS
+     * protocol. The implementation uses an operating system facility that can
+     * associate names with addresses, and vice versa. This implementation can have
+     * subtle but important consequences on the behavior of any Node.js program. Please
+     * take some time to consult the `Implementation considerations section` before
+     * using `dnsPromises.lookup()`.
+     *
+     * Example usage:
+     *
+     * ```js
+     * const dns = require('dns');
+     * const dnsPromises = dns.promises;
+     * const options = {
+     *   family: 6,
+     *   hints: dns.ADDRCONFIG | dns.V4MAPPED,
+     * };
+     *
+     * dnsPromises.lookup('example.com', options).then((result) => {
+     *   console.log('address: %j family: IPv%s', result.address, result.family);
+     *   // address: "2606:2800:220:1:248:1893:25c8:1946" family: IPv6
+     * });
+     *
+     * // When options.all is true, the result will be an Array.
+     * options.all = true;
+     * dnsPromises.lookup('example.com', options).then((result) => {
+     *   console.log('addresses: %j', result);
+     *   // addresses: [{"address":"2606:2800:220:1:248:1893:25c8:1946","family":6}]
+     * });
+     * ```
+     * @since v10.6.0
+     */
+    function lookup(hostname: string, family: number): Promise<LookupAddress>;
+    function lookup(hostname: string, options: LookupOneOptions): Promise<LookupAddress>;
+    function lookup(hostname: string, options: LookupAllOptions): Promise<LookupAddress[]>;
+    function lookup(hostname: string, options: LookupOptions): Promise<LookupAddress | LookupAddress[]>;
+    function lookup(hostname: string): Promise<LookupAddress>;
+    /**
+     * Resolves the given `address` and `port` into a host name and service using
+     * the operating system's underlying `getnameinfo` implementation.
+     *
+     * If `address` is not a valid IP address, a `TypeError` will be thrown.
+     * The `port` will be coerced to a number. If it is not a legal port, a `TypeError`will be thrown.
+     *
+     * On error, the `Promise` is rejected with an `Error` object, where `err.code`is the error code.
+     *
+     * ```js
+     * const dnsPromises = require('dns').promises;
+     * dnsPromises.lookupService('127.0.0.1', 22).then((result) => {
+     *   console.log(result.hostname, result.service);
+     *   // Prints: localhost ssh
+     * });
+     * ```
+     * @since v10.6.0
+     */
+    function lookupService(
+        address: string,
+        port: number
+    ): Promise<{
+        hostname: string;
+        service: string;
+    }>;
+    /**
+     * Uses the DNS protocol to resolve a host name (e.g. `'nodejs.org'`) into an array
+     * of the resource records. When successful, the `Promise` is resolved with an
+     * array of resource records. The type and structure of individual results vary
+     * based on `rrtype`:
+     *
+     * <omitted>
+     *
+     * On error, the `Promise` is rejected with an `Error` object, where `err.code`is one of the DNS error codes.
+     * @since v10.6.0
+     * @param hostname Host name to resolve.
+     * @param [rrtype='A'] Resource record type.
+     */
+    function resolve(hostname: string): Promise<string[]>;
+    function resolve(hostname: string, rrtype: 'A'): Promise<string[]>;
+    function resolve(hostname: string, rrtype: 'AAAA'): Promise<string[]>;
+    function resolve(hostname: string, rrtype: 'ANY'): Promise<AnyRecord[]>;
+    function resolve(hostname: string, rrtype: 'CAA'): Promise<CaaRecord[]>;
+    function resolve(hostname: string, rrtype: 'CNAME'): Promise<string[]>;
+    function resolve(hostname: string, rrtype: 'MX'): Promise<MxRecord[]>;
+    function resolve(hostname: string, rrtype: 'NAPTR'): Promise<NaptrRecord[]>;
+    function resolve(hostname: string, rrtype: 'NS'): Promise<string[]>;
+    function resolve(hostname: string, rrtype: 'PTR'): Promise<string[]>;
+    function resolve(hostname: string, rrtype: 'SOA'): Promise<SoaRecord>;
+    function resolve(hostname: string, rrtype: 'SRV'): Promise<SrvRecord[]>;
+    function resolve(hostname: string, rrtype: 'TXT'): Promise<string[][]>;
+    function resolve(hostname: string, rrtype: string): Promise<string[] | MxRecord[] | NaptrRecord[] | SoaRecord | SrvRecord[] | string[][] | AnyRecord[]>;
+    /**
+     * Uses the DNS protocol to resolve IPv4 addresses (`A` records) for the`hostname`. On success, the `Promise` is resolved with an array of IPv4
+     * addresses (e.g. `['74.125.79.104', '74.125.79.105', '74.125.79.106']`).
+     * @since v10.6.0
+     * @param hostname Host name to resolve.
+     */
+    function resolve4(hostname: string): Promise<string[]>;
+    function resolve4(hostname: string, options: ResolveWithTtlOptions): Promise<RecordWithTtl[]>;
+    function resolve4(hostname: string, options: ResolveOptions): Promise<string[] | RecordWithTtl[]>;
+    /**
+     * Uses the DNS protocol to resolve IPv6 addresses (`AAAA` records) for the`hostname`. On success, the `Promise` is resolved with an array of IPv6
+     * addresses.
+     * @since v10.6.0
+     * @param hostname Host name to resolve.
+     */
+    function resolve6(hostname: string): Promise<string[]>;
+    function resolve6(hostname: string, options: ResolveWithTtlOptions): Promise<RecordWithTtl[]>;
+    function resolve6(hostname: string, options: ResolveOptions): Promise<string[] | RecordWithTtl[]>;
+    /**
+     * Uses the DNS protocol to resolve all records (also known as `ANY` or `*` query).
+     * On success, the `Promise` is resolved with an array containing various types of
+     * records. Each object has a property `type` that indicates the type of the
+     * current record. And depending on the `type`, additional properties will be
+     * present on the object:
+     *
+     * <omitted>
+     *
+     * Here is an example of the result object:
+     *
+     * ```js
+     * [ { type: 'A', address: '127.0.0.1', ttl: 299 },
+     *   { type: 'CNAME', value: 'example.com' },
+     *   { type: 'MX', exchange: 'alt4.aspmx.l.example.com', priority: 50 },
+     *   { type: 'NS', value: 'ns1.example.com' },
+     *   { type: 'TXT', entries: [ 'v=spf1 include:_spf.example.com ~all' ] },
+     *   { type: 'SOA',
+     *     nsname: 'ns1.example.com',
+     *     hostmaster: 'admin.example.com',
+     *     serial: 156696742,
+     *     refresh: 900,
+     *     retry: 900,
+     *     expire: 1800,
+     *     minttl: 60 } ]
+     * ```
+     * @since v10.6.0
+     */
+    function resolveAny(hostname: string): Promise<AnyRecord[]>;
+    /**
+     * Uses the DNS protocol to resolve `CAA` records for the `hostname`. On success,
+     * the `Promise` is resolved with an array of objects containing available
+     * certification authority authorization records available for the `hostname`(e.g. `[{critical: 0, iodef: 'mailto:pki@example.com'},{critical: 128, issue: 'pki.example.com'}]`).
+     * @since v15.0.0, v14.17.0
+     */
+    function resolveCaa(hostname: string): Promise<CaaRecord[]>;
+    /**
+     * Uses the DNS protocol to resolve `CNAME` records for the `hostname`. On success,
+     * the `Promise` is resolved with an array of canonical name records available for
+     * the `hostname` (e.g. `['bar.example.com']`).
+     * @since v10.6.0
+     */
+    function resolveCname(hostname: string): Promise<string[]>;
+    /**
+     * Uses the DNS protocol to resolve mail exchange records (`MX` records) for the`hostname`. On success, the `Promise` is resolved with an array of objects
+     * containing both a `priority` and `exchange` property (e.g.`[{priority: 10, exchange: 'mx.example.com'}, ...]`).
+     * @since v10.6.0
+     */
+    function resolveMx(hostname: string): Promise<MxRecord[]>;
+    /**
+     * Uses the DNS protocol to resolve regular expression based records (`NAPTR`records) for the `hostname`. On success, the `Promise` is resolved with an array
+     * of objects with the following properties:
+     *
+     * * `flags`
+     * * `service`
+     * * `regexp`
+     * * `replacement`
+     * * `order`
+     * * `preference`
+     *
+     * ```js
+     * {
+     *   flags: 's',
+     *   service: 'SIP+D2U',
+     *   regexp: '',
+     *   replacement: '_sip._udp.example.com',
+     *   order: 30,
+     *   preference: 100
+     * }
+     * ```
+     * @since v10.6.0
+     */
+    function resolveNaptr(hostname: string): Promise<NaptrRecord[]>;
+    /**
+     * Uses the DNS protocol to resolve name server records (`NS` records) for the`hostname`. On success, the `Promise` is resolved with an array of name server
+     * records available for `hostname` (e.g.`['ns1.example.com', 'ns2.example.com']`).
+     * @since v10.6.0
+     */
+    function resolveNs(hostname: string): Promise<string[]>;
+    /**
+     * Uses the DNS protocol to resolve pointer records (`PTR` records) for the`hostname`. On success, the `Promise` is resolved with an array of strings
+     * containing the reply records.
+     * @since v10.6.0
+     */
+    function resolvePtr(hostname: string): Promise<string[]>;
+    /**
+     * Uses the DNS protocol to resolve a start of authority record (`SOA` record) for
+     * the `hostname`. On success, the `Promise` is resolved with an object with the
+     * following properties:
+     *
+     * * `nsname`
+     * * `hostmaster`
+     * * `serial`
+     * * `refresh`
+     * * `retry`
+     * * `expire`
+     * * `minttl`
+     *
+     * ```js
+     * {
+     *   nsname: 'ns.example.com',
+     *   hostmaster: 'root.example.com',
+     *   serial: 2013101809,
+     *   refresh: 10000,
+     *   retry: 2400,
+     *   expire: 604800,
+     *   minttl: 3600
+     * }
+     * ```
+     * @since v10.6.0
+     */
+    function resolveSoa(hostname: string): Promise<SoaRecord>;
+    /**
+     * Uses the DNS protocol to resolve service records (`SRV` records) for the`hostname`. On success, the `Promise` is resolved with an array of objects with
+     * the following properties:
+     *
+     * * `priority`
+     * * `weight`
+     * * `port`
+     * * `name`
+     *
+     * ```js
+     * {
+     *   priority: 10,
+     *   weight: 5,
+     *   port: 21223,
+     *   name: 'service.example.com'
+     * }
+     * ```
+     * @since v10.6.0
+     */
+    function resolveSrv(hostname: string): Promise<SrvRecord[]>;
+    /**
+     * Uses the DNS protocol to resolve text queries (`TXT` records) for the`hostname`. On success, the `Promise` is resolved with a two-dimensional array
+     * of the text records available for `hostname` (e.g.`[ ['v=spf1 ip4:0.0.0.0 ', '~all' ] ]`). Each sub-array contains TXT chunks of
+     * one record. Depending on the use case, these could be either joined together or
+     * treated separately.
+     * @since v10.6.0
+     */
+    function resolveTxt(hostname: string): Promise<string[][]>;
+    /**
+     * Performs a reverse DNS query that resolves an IPv4 or IPv6 address to an
+     * array of host names.
+     *
+     * On error, the `Promise` is rejected with an `Error` object, where `err.code`is one of the DNS error codes.
+     * @since v10.6.0
+     */
+    function reverse(ip: string): Promise<string[]>;
+    /**
+     * Sets the IP address and port of servers to be used when performing DNS
+     * resolution. The `servers` argument is an array of [RFC 5952](https://tools.ietf.org/html/rfc5952#section-6) formatted
+     * addresses. If the port is the IANA default DNS port (53) it can be omitted.
+     *
+     * ```js
+     * dnsPromises.setServers([
+     *   '4.4.4.4',
+     *   '[2001:4860:4860::8888]',
+     *   '4.4.4.4:1053',
+     *   '[2001:4860:4860::8888]:1053',
+     * ]);
+     * ```
+     *
+     * An error will be thrown if an invalid address is provided.
+     *
+     * The `dnsPromises.setServers()` method must not be called while a DNS query is in
+     * progress.
+     *
+     * This method works much like [resolve.conf](https://man7.org/linux/man-pages/man5/resolv.conf.5.html).
+     * That is, if attempting to resolve with the first server provided results in a`NOTFOUND` error, the `resolve()` method will _not_ attempt to resolve with
+     * subsequent servers provided. Fallback DNS servers will only be used if the
+     * earlier ones time out or result in some other error.
+     * @since v10.6.0
+     * @param servers array of `RFC 5952` formatted addresses
+     */
+    function setServers(servers: ReadonlyArray<string>): void;
+    /**
+     * Set the default value of `verbatim` in `dns.lookup()` and `dnsPromises.lookup()`. The value could be:
+     *
+     * * `ipv4first`: sets default `verbatim` `false`.
+     * * `verbatim`: sets default `verbatim` `true`.
+     *
+     * The default is `ipv4first` and `dnsPromises.setDefaultResultOrder()` have
+     * higher priority than `--dns-result-order`. When using `worker threads`,`dnsPromises.setDefaultResultOrder()` from the main thread won't affect the
+     * default dns orders in workers.
+     * @since v16.4.0, v14.18.0
+     * @param order must be `'ipv4first'` or `'verbatim'`.
+     */
+    function setDefaultResultOrder(order: 'ipv4first' | 'verbatim'): void;
+    class Resolver {
+        constructor(options?: ResolverOptions);
+        cancel(): void;
+        getServers: typeof getServers;
+        resolve: typeof resolve;
+        resolve4: typeof resolve4;
+        resolve6: typeof resolve6;
+        resolveAny: typeof resolveAny;
+        resolveCname: typeof resolveCname;
+        resolveMx: typeof resolveMx;
+        resolveNaptr: typeof resolveNaptr;
+        resolveNs: typeof resolveNs;
+        resolvePtr: typeof resolvePtr;
+        resolveSoa: typeof resolveSoa;
+        resolveSrv: typeof resolveSrv;
+        resolveTxt: typeof resolveTxt;
+        reverse: typeof reverse;
+        setLocalAddress(ipv4?: string, ipv6?: string): void;
+        setServers: typeof setServers;
+    }
+}
+declare module 'node:dns/promises' {
+    export * from 'dns/promises';
+}

backend/node_modules/@types/node/domain.d.ts

@@ -0,0 +1,169 @@
+/**
+ * **This module is pending deprecation.** Once a replacement API has been
+ * finalized, this module will be fully deprecated. Most developers should**not** have cause to use this module. Users who absolutely must have
+ * the functionality that domains provide may rely on it for the time being
+ * but should expect to have to migrate to a different solution
+ * in the future.
+ *
+ * Domains provide a way to handle multiple different IO operations as a
+ * single group. If any of the event emitters or callbacks registered to a
+ * domain emit an `'error'` event, or throw an error, then the domain object
+ * will be notified, rather than losing the context of the error in the`process.on('uncaughtException')` handler, or causing the program to
+ * exit immediately with an error code.
+ * @deprecated Since v1.4.2 - Deprecated
+ * @see [source](https://github.com/nodejs/node/blob/v17.0.0/lib/domain.js)
+ */
+declare module 'domain' {
+    import EventEmitter = require('node:events');
+    /**
+     * The `Domain` class encapsulates the functionality of routing errors and
+     * uncaught exceptions to the active `Domain` object.
+     *
+     * To handle the errors that it catches, listen to its `'error'` event.
+     */
+    class Domain extends EventEmitter {
+        /**
+         * An array of timers and event emitters that have been explicitly added
+         * to the domain.
+         */
+        members: Array<EventEmitter | NodeJS.Timer>;
+        /**
+         * The `enter()` method is plumbing used by the `run()`, `bind()`, and`intercept()` methods to set the active domain. It sets `domain.active` and`process.domain` to the domain, and implicitly
+         * pushes the domain onto the domain
+         * stack managed by the domain module (see {@link exit} for details on the
+         * domain stack). The call to `enter()` delimits the beginning of a chain of
+         * asynchronous calls and I/O operations bound to a domain.
+         *
+         * Calling `enter()` changes only the active domain, and does not alter the domain
+         * itself. `enter()` and `exit()` can be called an arbitrary number of times on a
+         * single domain.
+         */
+        enter(): void;
+        /**
+         * The `exit()` method exits the current domain, popping it off the domain stack.
+         * Any time execution is going to switch to the context of a different chain of
+         * asynchronous calls, it's important to ensure that the current domain is exited.
+         * The call to `exit()` delimits either the end of or an interruption to the chain
+         * of asynchronous calls and I/O operations bound to a domain.
+         *
+         * If there are multiple, nested domains bound to the current execution context,`exit()` will exit any domains nested within this domain.
+         *
+         * Calling `exit()` changes only the active domain, and does not alter the domain
+         * itself. `enter()` and `exit()` can be called an arbitrary number of times on a
+         * single domain.
+         */
+        exit(): void;
+        /**
+         * Run the supplied function in the context of the domain, implicitly
+         * binding all event emitters, timers, and lowlevel requests that are
+         * created in that context. Optionally, arguments can be passed to
+         * the function.
+         *
+         * This is the most basic way to use a domain.
+         *
+         * ```js
+         * const domain = require('domain');
+         * const fs = require('fs');
+         * const d = domain.create();
+         * d.on('error', (er) => {
+         *   console.error('Caught error!', er);
+         * });
+         * d.run(() => {
+         *   process.nextTick(() => {
+         *     setTimeout(() => { // Simulating some various async stuff
+         *       fs.open('non-existent file', 'r', (er, fd) => {
+         *         if (er) throw er;
+         *         // proceed...
+         *       });
+         *     }, 100);
+         *   });
+         * });
+         * ```
+         *
+         * In this example, the `d.on('error')` handler will be triggered, rather
+         * than crashing the program.
+         */
+        run<T>(fn: (...args: any[]) => T, ...args: any[]): T;
+        /**
+         * Explicitly adds an emitter to the domain. If any event handlers called by
+         * the emitter throw an error, or if the emitter emits an `'error'` event, it
+         * will be routed to the domain's `'error'` event, just like with implicit
+         * binding.
+         *
+         * This also works with timers that are returned from `setInterval()` and `setTimeout()`. If their callback function throws, it will be caught by
+         * the domain `'error'` handler.
+         *
+         * If the Timer or `EventEmitter` was already bound to a domain, it is removed
+         * from that one, and bound to this one instead.
+         * @param emitter emitter or timer to be added to the domain
+         */
+        add(emitter: EventEmitter | NodeJS.Timer): void;
+        /**
+         * The opposite of {@link add}. Removes domain handling from the
+         * specified emitter.
+         * @param emitter emitter or timer to be removed from the domain
+         */
+        remove(emitter: EventEmitter | NodeJS.Timer): void;
+        /**
+         * The returned function will be a wrapper around the supplied callback
+         * function. When the returned function is called, any errors that are
+         * thrown will be routed to the domain's `'error'` event.
+         *
+         * ```js
+         * const d = domain.create();
+         *
+         * function readSomeFile(filename, cb) {
+         *   fs.readFile(filename, 'utf8', d.bind((er, data) => {
+         *     // If this throws, it will also be passed to the domain.
+         *     return cb(er, data ? JSON.parse(data) : null);
+         *   }));
+         * }
+         *
+         * d.on('error', (er) => {
+         *   // An error occurred somewhere. If we throw it now, it will crash the program
+         *   // with the normal line number and stack message.
+         * });
+         * ```
+         * @param callback The callback function
+         * @return The bound function
+         */
+        bind<T extends Function>(callback: T): T;
+        /**
+         * This method is almost identical to {@link bind}. However, in
+         * addition to catching thrown errors, it will also intercept `Error` objects sent as the first argument to the function.
+         *
+         * In this way, the common `if (err) return callback(err);` pattern can be replaced
+         * with a single error handler in a single place.
+         *
+         * ```js
+         * const d = domain.create();
+         *
+         * function readSomeFile(filename, cb) {
+         *   fs.readFile(filename, 'utf8', d.intercept((data) => {
+         *     // Note, the first argument is never passed to the
+         *     // callback since it is assumed to be the 'Error' argument
+         *     // and thus intercepted by the domain.
+         *
+         *     // If this throws, it will also be passed to the domain
+         *     // so the error-handling logic can be moved to the 'error'
+         *     // event on the domain instead of being repeated throughout
+         *     // the program.
+         *     return cb(null, JSON.parse(data));
+         *   }));
+         * }
+         *
+         * d.on('error', (er) => {
+         *   // An error occurred somewhere. If we throw it now, it will crash the program
+         *   // with the normal line number and stack message.
+         * });
+         * ```
+         * @param callback The callback function
+         * @return The intercepted function
+         */
+        intercept<T extends Function>(callback: T): T;
+    }
+    function create(): Domain;
+}
+declare module 'node:domain' {
+    export * from 'domain';
+}

backend/node_modules/@types/node/events.d.ts

@@ -0,0 +1,623 @@
+/**
+ * Much of the Node.js core API is built around an idiomatic asynchronous
+ * event-driven architecture in which certain kinds of objects (called "emitters")
+ * emit named events that cause `Function` objects ("listeners") to be called.
+ *
+ * For instance: a `net.Server` object emits an event each time a peer
+ * connects to it; a `fs.ReadStream` emits an event when the file is opened;
+ * a `stream` emits an event whenever data is available to be read.
+ *
+ * All objects that emit events are instances of the `EventEmitter` class. These
+ * objects expose an `eventEmitter.on()` function that allows one or more
+ * functions to be attached to named events emitted by the object. Typically,
+ * event names are camel-cased strings but any valid JavaScript property key
+ * can be used.
+ *
+ * When the `EventEmitter` object emits an event, all of the functions attached
+ * to that specific event are called _synchronously_. Any values returned by the
+ * called listeners are _ignored_ and discarded.
+ *
+ * The following example shows a simple `EventEmitter` instance with a single
+ * listener. The `eventEmitter.on()` method is used to register listeners, while
+ * the `eventEmitter.emit()` method is used to trigger the event.
+ *
+ * ```js
+ * const EventEmitter = require('events');
+ *
+ * class MyEmitter extends EventEmitter {}
+ *
+ * const myEmitter = new MyEmitter();
+ * myEmitter.on('event', () => {
+ *   console.log('an event occurred!');
+ * });
+ * myEmitter.emit('event');
+ * ```
+ * @see [source](https://github.com/nodejs/node/blob/v17.0.0/lib/events.js)
+ */
+declare module 'events' {
+    interface EventEmitterOptions {
+        /**
+         * Enables automatic capturing of promise rejection.
+         */
+        captureRejections?: boolean | undefined;
+    }
+    interface NodeEventTarget {
+        once(eventName: string | symbol, listener: (...args: any[]) => void): this;
+    }
+    interface DOMEventTarget {
+        addEventListener(
+            eventName: string,
+            listener: (...args: any[]) => void,
+            opts?: {
+                once: boolean;
+            }
+        ): any;
+    }
+    interface StaticEventEmitterOptions {
+        signal?: AbortSignal | undefined;
+    }
+    interface EventEmitter extends NodeJS.EventEmitter {}
+    /**
+     * The `EventEmitter` class is defined and exposed by the `events` module:
+     *
+     * ```js
+     * const EventEmitter = require('events');
+     * ```
+     *
+     * All `EventEmitter`s emit the event `'newListener'` when new listeners are
+     * added and `'removeListener'` when existing listeners are removed.
+     *
+     * It supports the following option:
+     * @since v0.1.26
+     */
+    class EventEmitter {
+        constructor(options?: EventEmitterOptions);
+        /**
+         * Creates a `Promise` that is fulfilled when the `EventEmitter` emits the given
+         * event or that is rejected if the `EventEmitter` emits `'error'` while waiting.
+         * The `Promise` will resolve with an array of all the arguments emitted to the
+         * given event.
+         *
+         * This method is intentionally generic and works with the web platform [EventTarget](https://dom.spec.whatwg.org/#interface-eventtarget) interface, which has no special`'error'` event
+         * semantics and does not listen to the `'error'` event.
+         *
+         * ```js
+         * const { once, EventEmitter } = require('events');
+         *
+         * async function run() {
+         *   const ee = new EventEmitter();
+         *
+         *   process.nextTick(() => {
+         *     ee.emit('myevent', 42);
+         *   });
+         *
+         *   const [value] = await once(ee, 'myevent');
+         *   console.log(value);
+         *
+         *   const err = new Error('kaboom');
+         *   process.nextTick(() => {
+         *     ee.emit('error', err);
+         *   });
+         *
+         *   try {
+         *     await once(ee, 'myevent');
+         *   } catch (err) {
+         *     console.log('error happened', err);
+         *   }
+         * }
+         *
+         * run();
+         * ```
+         *
+         * The special handling of the `'error'` event is only used when `events.once()`is used to wait for another event. If `events.once()` is used to wait for the
+         * '`error'` event itself, then it is treated as any other kind of event without
+         * special handling:
+         *
+         * ```js
+         * const { EventEmitter, once } = require('events');
+         *
+         * const ee = new EventEmitter();
+         *
+         * once(ee, 'error')
+         *   .then(([err]) => console.log('ok', err.message))
+         *   .catch((err) => console.log('error', err.message));
+         *
+         * ee.emit('error', new Error('boom'));
+         *
+         * // Prints: ok boom
+         * ```
+         *
+         * An `AbortSignal` can be used to cancel waiting for the event:
+         *
+         * ```js
+         * const { EventEmitter, once } = require('events');
+         *
+         * const ee = new EventEmitter();
+         * const ac = new AbortController();
+         *
+         * async function foo(emitter, event, signal) {
+         *   try {
+         *     await once(emitter, event, { signal });
+         *     console.log('event emitted!');
+         *   } catch (error) {
+         *     if (error.name === 'AbortError') {
+         *       console.error('Waiting for the event was canceled!');
+         *     } else {
+         *       console.error('There was an error', error.message);
+         *     }
+         *   }
+         * }
+         *
+         * foo(ee, 'foo', ac.signal);
+         * ac.abort(); // Abort waiting for the event
+         * ee.emit('foo'); // Prints: Waiting for the event was canceled!
+         * ```
+         * @since v11.13.0, v10.16.0
+         */
+        static once(emitter: NodeEventTarget, eventName: string | symbol, options?: StaticEventEmitterOptions): Promise<any[]>;
+        static once(emitter: DOMEventTarget, eventName: string, options?: StaticEventEmitterOptions): Promise<any[]>;
+        /**
+         * ```js
+         * const { on, EventEmitter } = require('events');
+         *
+         * (async () => {
+         *   const ee = new EventEmitter();
+         *
+         *   // Emit later on
+         *   process.nextTick(() => {
+         *     ee.emit('foo', 'bar');
+         *     ee.emit('foo', 42);
+         *   });
+         *
+         *   for await (const event of on(ee, 'foo')) {
+         *     // The execution of this inner block is synchronous and it
+         *     // processes one event at a time (even with await). Do not use
+         *     // if concurrent execution is required.
+         *     console.log(event); // prints ['bar'] [42]
+         *   }
+         *   // Unreachable here
+         * })();
+         * ```
+         *
+         * Returns an `AsyncIterator` that iterates `eventName` events. It will throw
+         * if the `EventEmitter` emits `'error'`. It removes all listeners when
+         * exiting the loop. The `value` returned by each iteration is an array
+         * composed of the emitted event arguments.
+         *
+         * An `AbortSignal` can be used to cancel waiting on events:
+         *
+         * ```js
+         * const { on, EventEmitter } = require('events');
+         * const ac = new AbortController();
+         *
+         * (async () => {
+         *   const ee = new EventEmitter();
+         *
+         *   // Emit later on
+         *   process.nextTick(() => {
+         *     ee.emit('foo', 'bar');
+         *     ee.emit('foo', 42);
+         *   });
+         *
+         *   for await (const event of on(ee, 'foo', { signal: ac.signal })) {
+         *     // The execution of this inner block is synchronous and it
+         *     // processes one event at a time (even with await). Do not use
+         *     // if concurrent execution is required.
+         *     console.log(event); // prints ['bar'] [42]
+         *   }
+         *   // Unreachable here
+         * })();
+         *
+         * process.nextTick(() => ac.abort());
+         * ```
+         * @since v13.6.0, v12.16.0
+         * @param eventName The name of the event being listened for
+         * @return that iterates `eventName` events emitted by the `emitter`
+         */
+        static on(emitter: NodeJS.EventEmitter, eventName: string, options?: StaticEventEmitterOptions): AsyncIterableIterator<any>;
+        /**
+         * A class method that returns the number of listeners for the given `eventName`registered on the given `emitter`.
+         *
+         * ```js
+         * const { EventEmitter, listenerCount } = require('events');
+         * const myEmitter = new EventEmitter();
+         * myEmitter.on('event', () => {});
+         * myEmitter.on('event', () => {});
+         * console.log(listenerCount(myEmitter, 'event'));
+         * // Prints: 2
+         * ```
+         * @since v0.9.12
+         * @deprecated Since v3.2.0 - Use `listenerCount` instead.
+         * @param emitter The emitter to query
+         * @param eventName The event name
+         */
+        static listenerCount(emitter: NodeJS.EventEmitter, eventName: string | symbol): number;
+        /**
+         * Returns a copy of the array of listeners for the event named `eventName`.
+         *
+         * For `EventEmitter`s this behaves exactly the same as calling `.listeners` on
+         * the emitter.
+         *
+         * For `EventTarget`s this is the only way to get the event listeners for the
+         * event target. This is useful for debugging and diagnostic purposes.
+         *
+         * ```js
+         * const { getEventListeners, EventEmitter } = require('events');
+         *
+         * {
+         *   const ee = new EventEmitter();
+         *   const listener = () => console.log('Events are fun');
+         *   ee.on('foo', listener);
+         *   getEventListeners(ee, 'foo'); // [listener]
+         * }
+         * {
+         *   const et = new EventTarget();
+         *   const listener = () => console.log('Events are fun');
+         *   et.addEventListener('foo', listener);
+         *   getEventListeners(et, 'foo'); // [listener]
+         * }
+         * ```
+         * @since v15.2.0, v14.17.0
+         */
+        static getEventListeners(emitter: DOMEventTarget | NodeJS.EventEmitter, name: string | symbol): Function[];
+        /**
+         * This symbol shall be used to install a listener for only monitoring `'error'`
+         * events. Listeners installed using this symbol are called before the regular
+         * `'error'` listeners are called.
+         *
+         * Installing a listener using this symbol does not change the behavior once an
+         * `'error'` event is emitted, therefore the process will still crash if no
+         * regular `'error'` listener is installed.
+         */
+        static readonly errorMonitor: unique symbol;
+        static readonly captureRejectionSymbol: unique symbol;
+        /**
+         * Sets or gets the default captureRejection value for all emitters.
+         */
+        // TODO: These should be described using static getter/setter pairs:
+        static captureRejections: boolean;
+        static defaultMaxListeners: number;
+    }
+    import internal = require('node:events');
+    namespace EventEmitter {
+        // Should just be `export { EventEmitter }`, but that doesn't work in TypeScript 3.4
+        export { internal as EventEmitter };
+        export interface Abortable {
+            /**
+             * When provided the corresponding `AbortController` can be used to cancel an asynchronous action.
+             */
+            signal?: AbortSignal | undefined;
+        }
+    }
+    global {
+        namespace NodeJS {
+            interface EventEmitter {
+                /**
+                 * Alias for `emitter.on(eventName, listener)`.
+                 * @since v0.1.26
+                 */
+                addListener(eventName: string | symbol, listener: (...args: any[]) => void): this;
+                /**
+                 * Adds the `listener` function to the end of the listeners array for the
+                 * event named `eventName`. No checks are made to see if the `listener` has
+                 * already been added. Multiple calls passing the same combination of `eventName`and `listener` will result in the `listener` being added, and called, multiple
+                 * times.
+                 *
+                 * ```js
+                 * server.on('connection', (stream) => {
+                 *   console.log('someone connected!');
+                 * });
+                 * ```
+                 *
+                 * Returns a reference to the `EventEmitter`, so that calls can be chained.
+                 *
+                 * By default, event listeners are invoked in the order they are added. The`emitter.prependListener()` method can be used as an alternative to add the
+                 * event listener to the beginning of the listeners array.
+                 *
+                 * ```js
+                 * const myEE = new EventEmitter();
+                 * myEE.on('foo', () => console.log('a'));
+                 * myEE.prependListener('foo', () => console.log('b'));
+                 * myEE.emit('foo');
+                 * // Prints:
+                 * //   b
+                 * //   a
+                 * ```
+                 * @since v0.1.101
+                 * @param eventName The name of the event.
+                 * @param listener The callback function
+                 */
+                on(eventName: string | symbol, listener: (...args: any[]) => void): this;
+                /**
+                 * Adds a **one-time**`listener` function for the event named `eventName`. The
+                 * next time `eventName` is triggered, this listener is removed and then invoked.
+                 *
+                 * ```js
+                 * server.once('connection', (stream) => {
+                 *   console.log('Ah, we have our first user!');
+                 * });
+                 * ```
+                 *
+                 * Returns a reference to the `EventEmitter`, so that calls can be chained.
+                 *
+                 * By default, event listeners are invoked in the order they are added. The`emitter.prependOnceListener()` method can be used as an alternative to add the
+                 * event listener to the beginning of the listeners array.
+                 *
+                 * ```js
+                 * const myEE = new EventEmitter();
+                 * myEE.once('foo', () => console.log('a'));
+                 * myEE.prependOnceListener('foo', () => console.log('b'));
+                 * myEE.emit('foo');
+                 * // Prints:
+                 * //   b
+                 * //   a
+                 * ```
+                 * @since v0.3.0
+                 * @param eventName The name of the event.
+                 * @param listener The callback function
+                 */
+                once(eventName: string | symbol, listener: (...args: any[]) => void): this;
+                /**
+                 * Removes the specified `listener` from the listener array for the event named`eventName`.
+                 *
+                 * ```js
+                 * const callback = (stream) => {
+                 *   console.log('someone connected!');
+                 * };
+                 * server.on('connection', callback);
+                 * // ...
+                 * server.removeListener('connection', callback);
+                 * ```
+                 *
+                 * `removeListener()` will remove, at most, one instance of a listener from the
+                 * listener array. If any single listener has been added multiple times to the
+                 * listener array for the specified `eventName`, then `removeListener()` must be
+                 * called multiple times to remove each instance.
+                 *
+                 * Once an event is emitted, all listeners attached to it at the
+                 * time of emitting are called in order. This implies that any`removeListener()` or `removeAllListeners()` calls _after_ emitting and_before_ the last listener finishes execution will
+                 * not remove them from`emit()` in progress. Subsequent events behave as expected.
+                 *
+                 * ```js
+                 * const myEmitter = new MyEmitter();
+                 *
+                 * const callbackA = () => {
+                 *   console.log('A');
+                 *   myEmitter.removeListener('event', callbackB);
+                 * };
+                 *
+                 * const callbackB = () => {
+                 *   console.log('B');
+                 * };
+                 *
+                 * myEmitter.on('event', callbackA);
+                 *
+                 * myEmitter.on('event', callbackB);
+                 *
+                 * // callbackA removes listener callbackB but it will still be called.
+                 * // Internal listener array at time of emit [callbackA, callbackB]
+                 * myEmitter.emit('event');
+                 * // Prints:
+                 * //   A
+                 * //   B
+                 *
+                 * // callbackB is now removed.
+                 * // Internal listener array [callbackA]
+                 * myEmitter.emit('event');
+                 * // Prints:
+                 * //   A
+                 * ```
+                 *
+                 * Because listeners are managed using an internal array, calling this will
+                 * change the position indices of any listener registered _after_ the listener
+                 * being removed. This will not impact the order in which listeners are called,
+                 * but it means that any copies of the listener array as returned by
+                 * the `emitter.listeners()` method will need to be recreated.
+                 *
+                 * When a single function has been added as a handler multiple times for a single
+                 * event (as in the example below), `removeListener()` will remove the most
+                 * recently added instance. In the example the `once('ping')`listener is removed:
+                 *
+                 * ```js
+                 * const ee = new EventEmitter();
+                 *
+                 * function pong() {
+                 *   console.log('pong');
+                 * }
+                 *
+                 * ee.on('ping', pong);
+                 * ee.once('ping', pong);
+                 * ee.removeListener('ping', pong);
+                 *
+                 * ee.emit('ping');
+                 * ee.emit('ping');
+                 * ```
+                 *
+                 * Returns a reference to the `EventEmitter`, so that calls can be chained.
+                 * @since v0.1.26
+                 */
+                removeListener(eventName: string | symbol, listener: (...args: any[]) => void): this;
+                /**
+                 * Alias for `emitter.removeListener()`.
+                 * @since v10.0.0
+                 */
+                off(eventName: string | symbol, listener: (...args: any[]) => void): this;
+                /**
+                 * Removes all listeners, or those of the specified `eventName`.
+                 *
+                 * It is bad practice to remove listeners added elsewhere in the code,
+                 * particularly when the `EventEmitter` instance was created by some other
+                 * component or module (e.g. sockets or file streams).
+                 *
+                 * Returns a reference to the `EventEmitter`, so that calls can be chained.
+                 * @since v0.1.26
+                 */
+                removeAllListeners(event?: string | symbol): this;
+                /**
+                 * By default `EventEmitter`s will print a warning if more than `10` listeners are
+                 * added for a particular event. This is a useful default that helps finding
+                 * memory leaks. The `emitter.setMaxListeners()` method allows the limit to be
+                 * modified for this specific `EventEmitter` instance. The value can be set to`Infinity` (or `0`) to indicate an unlimited number of listeners.
+                 *
+                 * Returns a reference to the `EventEmitter`, so that calls can be chained.
+                 * @since v0.3.5
+                 */
+                setMaxListeners(n: number): this;
+                /**
+                 * Returns the current max listener value for the `EventEmitter` which is either
+                 * set by `emitter.setMaxListeners(n)` or defaults to {@link defaultMaxListeners}.
+                 * @since v1.0.0
+                 */
+                getMaxListeners(): number;
+                /**
+                 * Returns a copy of the array of listeners for the event named `eventName`.
+                 *
+                 * ```js
+                 * server.on('connection', (stream) => {
+                 *   console.log('someone connected!');
+                 * });
+                 * console.log(util.inspect(server.listeners('connection')));
+                 * // Prints: [ [Function] ]
+                 * ```
+                 * @since v0.1.26
+                 */
+                listeners(eventName: string | symbol): Function[];
+                /**
+                 * Returns a copy of the array of listeners for the event named `eventName`,
+                 * including any wrappers (such as those created by `.once()`).
+                 *
+                 * ```js
+                 * const emitter = new EventEmitter();
+                 * emitter.once('log', () => console.log('log once'));
+                 *
+                 * // Returns a new Array with a function `onceWrapper` which has a property
+                 * // `listener` which contains the original listener bound above
+                 * const listeners = emitter.rawListeners('log');
+                 * const logFnWrapper = listeners[0];
+                 *
+                 * // Logs "log once" to the console and does not unbind the `once` event
+                 * logFnWrapper.listener();
+                 *
+                 * // Logs "log once" to the console and removes the listener
+                 * logFnWrapper();
+                 *
+                 * emitter.on('log', () => console.log('log persistently'));
+                 * // Will return a new Array with a single function bound by `.on()` above
+                 * const newListeners = emitter.rawListeners('log');
+                 *
+                 * // Logs "log persistently" twice
+                 * newListeners[0]();
+                 * emitter.emit('log');
+                 * ```
+                 * @since v9.4.0
+                 */
+                rawListeners(eventName: string | symbol): Function[];
+                /**
+                 * Synchronously calls each of the listeners registered for the event named`eventName`, in the order they were registered, passing the supplied arguments
+                 * to each.
+                 *
+                 * Returns `true` if the event had listeners, `false` otherwise.
+                 *
+                 * ```js
+                 * const EventEmitter = require('events');
+                 * const myEmitter = new EventEmitter();
+                 *
+                 * // First listener
+                 * myEmitter.on('event', function firstListener() {
+                 *   console.log('Helloooo! first listener');
+                 * });
+                 * // Second listener
+                 * myEmitter.on('event', function secondListener(arg1, arg2) {
+                 *   console.log(`event with parameters ${arg1}, ${arg2} in second listener`);
+                 * });
+                 * // Third listener
+                 * myEmitter.on('event', function thirdListener(...args) {
+                 *   const parameters = args.join(', ');
+                 *   console.log(`event with parameters ${parameters} in third listener`);
+                 * });
+                 *
+                 * console.log(myEmitter.listeners('event'));
+                 *
+                 * myEmitter.emit('event', 1, 2, 3, 4, 5);
+                 *
+                 * // Prints:
+                 * // [
+                 * //   [Function: firstListener],
+                 * //   [Function: secondListener],
+                 * //   [Function: thirdListener]
+                 * // ]
+                 * // Helloooo! first listener
+                 * // event with parameters 1, 2 in second listener
+                 * // event with parameters 1, 2, 3, 4, 5 in third listener
+                 * ```
+                 * @since v0.1.26
+                 */
+                emit(eventName: string | symbol, ...args: any[]): boolean;
+                /**
+                 * Returns the number of listeners listening to the event named `eventName`.
+                 * @since v3.2.0
+                 * @param eventName The name of the event being listened for
+                 */
+                listenerCount(eventName: string | symbol): number;
+                /**
+                 * Adds the `listener` function to the _beginning_ of the listeners array for the
+                 * event named `eventName`. No checks are made to see if the `listener` has
+                 * already been added. Multiple calls passing the same combination of `eventName`and `listener` will result in the `listener` being added, and called, multiple
+                 * times.
+                 *
+                 * ```js
+                 * server.prependListener('connection', (stream) => {
+                 *   console.log('someone connected!');
+                 * });
+                 * ```
+                 *
+                 * Returns a reference to the `EventEmitter`, so that calls can be chained.
+                 * @since v6.0.0
+                 * @param eventName The name of the event.
+                 * @param listener The callback function
+                 */
+                prependListener(eventName: string | symbol, listener: (...args: any[]) => void): this;
+                /**
+                 * Adds a **one-time**`listener` function for the event named `eventName` to the_beginning_ of the listeners array. The next time `eventName` is triggered, this
+                 * listener is removed, and then invoked.
+                 *
+                 * ```js
+                 * server.prependOnceListener('connection', (stream) => {
+                 *   console.log('Ah, we have our first user!');
+                 * });
+                 * ```
+                 *
+                 * Returns a reference to the `EventEmitter`, so that calls can be chained.
+                 * @since v6.0.0
+                 * @param eventName The name of the event.
+                 * @param listener The callback function
+                 */
+                prependOnceListener(eventName: string | symbol, listener: (...args: any[]) => void): this;
+                /**
+                 * Returns an array listing the events for which the emitter has registered
+                 * listeners. The values in the array are strings or `Symbol`s.
+                 *
+                 * ```js
+                 * const EventEmitter = require('events');
+                 * const myEE = new EventEmitter();
+                 * myEE.on('foo', () => {});
+                 * myEE.on('bar', () => {});
+                 *
+                 * const sym = Symbol('symbol');
+                 * myEE.on(sym, () => {});
+                 *
+                 * console.log(myEE.eventNames());
+                 * // Prints: [ 'foo', 'bar', Symbol(symbol) ]
+                 * ```
+                 * @since v6.0.0
+                 */
+                eventNames(): Array<string | symbol>;
+            }
+        }
+    }
+    export = EventEmitter;
+}
+declare module 'node:events' {
+    import events = require('events');
+    export = events;
+}

backend/node_modules/@types/node/globals.d.ts

@@ -0,0 +1,284 @@
+// Declare "static" methods in Error
+interface ErrorConstructor {
+    /** Create .stack property on a target object */
+    captureStackTrace(targetObject: object, constructorOpt?: Function): void;
+
+    /**
+     * Optional override for formatting stack traces
+     *
+     * @see https://v8.dev/docs/stack-trace-api#customizing-stack-traces
+     */
+    prepareStackTrace?: ((err: Error, stackTraces: NodeJS.CallSite[]) => any) | undefined;
+
+    stackTraceLimit: number;
+}
+
+/*-----------------------------------------------*
+ *                                               *
+ *                   GLOBAL                      *
+ *                                               *
+ ------------------------------------------------*/
+
+// For backwards compability
+interface NodeRequire extends NodeJS.Require { }
+interface RequireResolve extends NodeJS.RequireResolve { }
+interface NodeModule extends NodeJS.Module { }
+
+declare var process: NodeJS.Process;
+declare var console: Console;
+
+declare var __filename: string;
+declare var __dirname: string;
+
+declare var require: NodeRequire;
+declare var module: NodeModule;
+
+// Same as module.exports
+declare var exports: any;
+
+/**
+ * Only available if `--expose-gc` is passed to the process.
+ */
+declare var gc: undefined | (() => void);
+
+//#region borrowed
+// from https://github.com/microsoft/TypeScript/blob/38da7c600c83e7b31193a62495239a0fe478cb67/lib/lib.webworker.d.ts#L633 until moved to separate lib
+/** A controller object that allows you to abort one or more DOM requests as and when desired. */
+interface AbortController {
+    /**
+     * Returns the AbortSignal object associated with this object.
+     */
+
+    readonly signal: AbortSignal;
+    /**
+     * Invoking this method will set this object's AbortSignal's aborted flag and signal to any observers that the associated activity is to be aborted.
+     */
+    abort(): void;
+}
+
+/** A signal object that allows you to communicate with a DOM request (such as a Fetch) and abort it if required via an AbortController object. */
+interface AbortSignal {
+    /**
+     * Returns true if this AbortSignal's AbortController has signaled to abort, and false otherwise.
+     */
+    readonly aborted: boolean;
+}
+
+declare var AbortController: {
+    prototype: AbortController;
+    new(): AbortController;
+};
+
+declare var AbortSignal: {
+    prototype: AbortSignal;
+    new(): AbortSignal;
+    // TODO: Add abort() static
+};
+//#endregion borrowed
+
+//#region ArrayLike.at()
+interface RelativeIndexable<T> {
+    /**
+     * Takes an integer value and returns the item at that index,
+     * allowing for positive and negative integers.
+     * Negative integers count back from the last item in the array.
+     */
+    at(index: number): T | undefined;
+}
+interface String extends RelativeIndexable<string> {}
+interface Array<T> extends RelativeIndexable<T> {}
+interface Int8Array extends RelativeIndexable<number> {}
+interface Uint8Array extends RelativeIndexable<number> {}
+interface Uint8ClampedArray extends RelativeIndexable<number> {}
+interface Int16Array extends RelativeIndexable<number> {}
+interface Uint16Array extends RelativeIndexable<number> {}
+interface Int32Array extends RelativeIndexable<number> {}
+interface Uint32Array extends RelativeIndexable<number> {}
+interface Float32Array extends RelativeIndexable<number> {}
+interface Float64Array extends RelativeIndexable<number> {}
+interface BigInt64Array extends RelativeIndexable<bigint> {}
+interface BigUint64Array extends RelativeIndexable<bigint> {}
+//#endregion ArrayLike.at() end
+
+/*----------------------------------------------*
+*                                               *
+*               GLOBAL INTERFACES               *
+*                                               *
+*-----------------------------------------------*/
+declare namespace NodeJS {
+    interface CallSite {
+        /**
+         * Value of "this"
+         */
+        getThis(): unknown;
+
+        /**
+         * Type of "this" as a string.
+         * This is the name of the function stored in the constructor field of
+         * "this", if available.  Otherwise the object's [[Class]] internal
+         * property.
+         */
+        getTypeName(): string | null;
+
+        /**
+         * Current function
+         */
+        getFunction(): Function | undefined;
+
+        /**
+         * Name of the current function, typically its name property.
+         * If a name property is not available an attempt will be made to try
+         * to infer a name from the function's context.
+         */
+        getFunctionName(): string | null;
+
+        /**
+         * Name of the property [of "this" or one of its prototypes] that holds
+         * the current function
+         */
+        getMethodName(): string | null;
+
+        /**
+         * Name of the script [if this function was defined in a script]
+         */
+        getFileName(): string | null;
+
+        /**
+         * Current line number [if this function was defined in a script]
+         */
+        getLineNumber(): number | null;
+
+        /**
+         * Current column number [if this function was defined in a script]
+         */
+        getColumnNumber(): number | null;
+
+        /**
+         * A call site object representing the location where eval was called
+         * [if this function was created using a call to eval]
+         */
+        getEvalOrigin(): string | undefined;
+
+        /**
+         * Is this a toplevel invocation, that is, is "this" the global object?
+         */
+        isToplevel(): boolean;
+
+        /**
+         * Does this call take place in code defined by a call to eval?
+         */
+        isEval(): boolean;
+
+        /**
+         * Is this call in native V8 code?
+         */
+        isNative(): boolean;
+
+        /**
+         * Is this a constructor call?
+         */
+        isConstructor(): boolean;
+    }
+
+    interface ErrnoException extends Error {
+        errno?: number | undefined;
+        code?: string | undefined;
+        path?: string | undefined;
+        syscall?: string | undefined;
+    }
+
+    interface ReadableStream extends EventEmitter {
+        readable: boolean;
+        read(size?: number): string | Buffer;
+        setEncoding(encoding: BufferEncoding): this;
+        pause(): this;
+        resume(): this;
+        isPaused(): boolean;
+        pipe<T extends WritableStream>(destination: T, options?: { end?: boolean | undefined; }): T;
+        unpipe(destination?: WritableStream): this;
+        unshift(chunk: string | Uint8Array, encoding?: BufferEncoding): void;
+        wrap(oldStream: ReadableStream): this;
+        [Symbol.asyncIterator](): AsyncIterableIterator<string | Buffer>;
+    }
+
+    interface WritableStream extends EventEmitter {
+        writable: boolean;
+        write(buffer: Uint8Array | string, cb?: (err?: Error | null) => void): boolean;
+        write(str: string, encoding?: BufferEncoding, cb?: (err?: Error | null) => void): boolean;
+        end(cb?: () => void): this;
+        end(data: string | Uint8Array, cb?: () => void): this;
+        end(str: string, encoding?: BufferEncoding, cb?: () => void): this;
+    }
+
+    interface ReadWriteStream extends ReadableStream, WritableStream { }
+
+    interface RefCounted {
+        ref(): this;
+        unref(): this;
+    }
+
+    type TypedArray =
+        | Uint8Array
+        | Uint8ClampedArray
+        | Uint16Array
+        | Uint32Array
+        | Int8Array
+        | Int16Array
+        | Int32Array
+        | BigUint64Array
+        | BigInt64Array
+        | Float32Array
+        | Float64Array;
+    type ArrayBufferView = TypedArray | DataView;
+
+    interface Require {
+        (id: string): any;
+        resolve: RequireResolve;
+        cache: Dict<NodeModule>;
+        /**
+         * @deprecated
+         */
+        extensions: RequireExtensions;
+        main: Module | undefined;
+    }
+
+    interface RequireResolve {
+        (id: string, options?: { paths?: string[] | undefined; }): string;
+        paths(request: string): string[] | null;
+    }
+
+    interface RequireExtensions extends Dict<(m: Module, filename: string) => any> {
+        '.js': (m: Module, filename: string) => any;
+        '.json': (m: Module, filename: string) => any;
+        '.node': (m: Module, filename: string) => any;
+    }
+    interface Module {
+        /**
+         * `true` if the module is running during the Node.js preload
+         */
+        isPreloading: boolean;
+        exports: any;
+        require: Require;
+        id: string;
+        filename: string;
+        loaded: boolean;
+        /** @deprecated since 14.6.0 Please use `require.main` and `module.children` instead. */
+        parent: Module | null | undefined;
+        children: Module[];
+        /**
+         * @since 11.14.0
+         *
+         * The directory name of the module. This is usually the same as the path.dirname() of the module.id.
+         */
+        path: string;
+        paths: string[];
+    }
+
+    interface Dict<T> {
+        [key: string]: T | undefined;
+    }
+
+    interface ReadOnlyDict<T> {
+        readonly [key: string]: T | undefined;
+    }
+}

backend/node_modules/@types/node/globals.global.d.ts

@@ -0,0 +1 @@
+declare var global: typeof globalThis;

backend/node_modules/@types/node/https.d.ts

@@ -0,0 +1,391 @@
+/**
+ * HTTPS is the HTTP protocol over TLS/SSL. In Node.js this is implemented as a
+ * separate module.
+ * @see [source](https://github.com/nodejs/node/blob/v17.0.0/lib/https.js)
+ */
+declare module 'https' {
+    import { Duplex } from 'node:stream';
+    import * as tls from 'node:tls';
+    import * as http from 'node:http';
+    import { URL } from 'node:url';
+    type ServerOptions = tls.SecureContextOptions & tls.TlsOptions & http.ServerOptions;
+    type RequestOptions = http.RequestOptions &
+        tls.SecureContextOptions & {
+            rejectUnauthorized?: boolean | undefined; // Defaults to true
+            servername?: string | undefined; // SNI TLS Extension
+        };
+    interface AgentOptions extends http.AgentOptions, tls.ConnectionOptions {
+        rejectUnauthorized?: boolean | undefined;
+        maxCachedSessions?: number | undefined;
+    }
+    /**
+     * An `Agent` object for HTTPS similar to `http.Agent`. See {@link request} for more information.
+     * @since v0.4.5
+     */
+    class Agent extends http.Agent {
+        constructor(options?: AgentOptions);
+        options: AgentOptions;
+    }
+    interface Server extends http.Server {}
+    /**
+     * See `http.Server` for more information.
+     * @since v0.3.4
+     */
+    class Server extends tls.Server {
+        constructor(requestListener?: http.RequestListener);
+        constructor(options: ServerOptions, requestListener?: http.RequestListener);
+        addListener(event: string, listener: (...args: any[]) => void): this;
+        addListener(event: 'keylog', listener: (line: Buffer, tlsSocket: tls.TLSSocket) => void): this;
+        addListener(event: 'newSession', listener: (sessionId: Buffer, sessionData: Buffer, callback: (err: Error, resp: Buffer) => void) => void): this;
+        addListener(event: 'OCSPRequest', listener: (certificate: Buffer, issuer: Buffer, callback: (err: Error | null, resp: Buffer) => void) => void): this;
+        addListener(event: 'resumeSession', listener: (sessionId: Buffer, callback: (err: Error, sessionData: Buffer) => void) => void): this;
+        addListener(event: 'secureConnection', listener: (tlsSocket: tls.TLSSocket) => void): this;
+        addListener(event: 'tlsClientError', listener: (err: Error, tlsSocket: tls.TLSSocket) => void): this;
+        addListener(event: 'close', listener: () => void): this;
+        addListener(event: 'connection', listener: (socket: Duplex) => void): this;
+        addListener(event: 'error', listener: (err: Error) => void): this;
+        addListener(event: 'listening', listener: () => void): this;
+        addListener(event: 'checkContinue', listener: http.RequestListener): this;
+        addListener(event: 'checkExpectation', listener: http.RequestListener): this;
+        addListener(event: 'clientError', listener: (err: Error, socket: Duplex) => void): this;
+        addListener(event: 'connect', listener: (req: http.IncomingMessage, socket: Duplex, head: Buffer) => void): this;
+        addListener(event: 'request', listener: http.RequestListener): this;
+        addListener(event: 'upgrade', listener: (req: http.IncomingMessage, socket: Duplex, head: Buffer) => void): this;
+        emit(event: string, ...args: any[]): boolean;
+        emit(event: 'keylog', line: Buffer, tlsSocket: tls.TLSSocket): boolean;
+        emit(event: 'newSession', sessionId: Buffer, sessionData: Buffer, callback: (err: Error, resp: Buffer) => void): boolean;
+        emit(event: 'OCSPRequest', certificate: Buffer, issuer: Buffer, callback: (err: Error | null, resp: Buffer) => void): boolean;
+        emit(event: 'resumeSession', sessionId: Buffer, callback: (err: Error, sessionData: Buffer) => void): boolean;
+        emit(event: 'secureConnection', tlsSocket: tls.TLSSocket): boolean;
+        emit(event: 'tlsClientError', err: Error, tlsSocket: tls.TLSSocket): boolean;
+        emit(event: 'close'): boolean;
+        emit(event: 'connection', socket: Duplex): boolean;
+        emit(event: 'error', err: Error): boolean;
+        emit(event: 'listening'): boolean;
+        emit(event: 'checkContinue', req: http.IncomingMessage, res: http.ServerResponse): boolean;
+        emit(event: 'checkExpectation', req: http.IncomingMessage, res: http.ServerResponse): boolean;
+        emit(event: 'clientError', err: Error, socket: Duplex): boolean;
+        emit(event: 'connect', req: http.IncomingMessage, socket: Duplex, head: Buffer): boolean;
+        emit(event: 'request', req: http.IncomingMessage, res: http.ServerResponse): boolean;
+        emit(event: 'upgrade', req: http.IncomingMessage, socket: Duplex, head: Buffer): boolean;
+        on(event: string, listener: (...args: any[]) => void): this;
+        on(event: 'keylog', listener: (line: Buffer, tlsSocket: tls.TLSSocket) => void): this;
+        on(event: 'newSession', listener: (sessionId: Buffer, sessionData: Buffer, callback: (err: Error, resp: Buffer) => void) => void): this;
+        on(event: 'OCSPRequest', listener: (certificate: Buffer, issuer: Buffer, callback: (err: Error | null, resp: Buffer) => void) => void): this;
+        on(event: 'resumeSession', listener: (sessionId: Buffer, callback: (err: Error, sessionData: Buffer) => void) => void): this;
+        on(event: 'secureConnection', listener: (tlsSocket: tls.TLSSocket) => void): this;
+        on(event: 'tlsClientError', listener: (err: Error, tlsSocket: tls.TLSSocket) => void): this;
+        on(event: 'close', listener: () => void): this;
+        on(event: 'connection', listener: (socket: Duplex) => void): this;
+        on(event: 'error', listener: (err: Error) => void): this;
+        on(event: 'listening', listener: () => void): this;
+        on(event: 'checkContinue', listener: http.RequestListener): this;
+        on(event: 'checkExpectation', listener: http.RequestListener): this;
+        on(event: 'clientError', listener: (err: Error, socket: Duplex) => void): this;
+        on(event: 'connect', listener: (req: http.IncomingMessage, socket: Duplex, head: Buffer) => void): this;
+        on(event: 'request', listener: http.RequestListener): this;
+        on(event: 'upgrade', listener: (req: http.IncomingMessage, socket: Duplex, head: Buffer) => void): this;
+        once(event: string, listener: (...args: any[]) => void): this;
+        once(event: 'keylog', listener: (line: Buffer, tlsSocket: tls.TLSSocket) => void): this;
+        once(event: 'newSession', listener: (sessionId: Buffer, sessionData: Buffer, callback: (err: Error, resp: Buffer) => void) => void): this;
+        once(event: 'OCSPRequest', listener: (certificate: Buffer, issuer: Buffer, callback: (err: Error | null, resp: Buffer) => void) => void): this;
+        once(event: 'resumeSession', listener: (sessionId: Buffer, callback: (err: Error, sessionData: Buffer) => void) => void): this;
+        once(event: 'secureConnection', listener: (tlsSocket: tls.TLSSocket) => void): this;
+        once(event: 'tlsClientError', listener: (err: Error, tlsSocket: tls.TLSSocket) => void): this;
+        once(event: 'close', listener: () => void): this;
+        once(event: 'connection', listener: (socket: Duplex) => void): this;
+        once(event: 'error', listener: (err: Error) => void): this;
+        once(event: 'listening', listener: () => void): this;
+        once(event: 'checkContinue', listener: http.RequestListener): this;
+        once(event: 'checkExpectation', listener: http.RequestListener): this;
+        once(event: 'clientError', listener: (err: Error, socket: Duplex) => void): this;
+        once(event: 'connect', listener: (req: http.IncomingMessage, socket: Duplex, head: Buffer) => void): this;
+        once(event: 'request', listener: http.RequestListener): this;
+        once(event: 'upgrade', listener: (req: http.IncomingMessage, socket: Duplex, head: Buffer) => void): this;
+        prependListener(event: string, listener: (...args: any[]) => void): this;
+        prependListener(event: 'keylog', listener: (line: Buffer, tlsSocket: tls.TLSSocket) => void): this;
+        prependListener(event: 'newSession', listener: (sessionId: Buffer, sessionData: Buffer, callback: (err: Error, resp: Buffer) => void) => void): this;
+        prependListener(event: 'OCSPRequest', listener: (certificate: Buffer, issuer: Buffer, callback: (err: Error | null, resp: Buffer) => void) => void): this;
+        prependListener(event: 'resumeSession', listener: (sessionId: Buffer, callback: (err: Error, sessionData: Buffer) => void) => void): this;
+        prependListener(event: 'secureConnection', listener: (tlsSocket: tls.TLSSocket) => void): this;
+        prependListener(event: 'tlsClientError', listener: (err: Error, tlsSocket: tls.TLSSocket) => void): this;
+        prependListener(event: 'close', listener: () => void): this;
+        prependListener(event: 'connection', listener: (socket: Duplex) => void): this;
+        prependListener(event: 'error', listener: (err: Error) => void): this;
+        prependListener(event: 'listening', listener: () => void): this;
+        prependListener(event: 'checkContinue', listener: http.RequestListener): this;
+        prependListener(event: 'checkExpectation', listener: http.RequestListener): this;
+        prependListener(event: 'clientError', listener: (err: Error, socket: Duplex) => void): this;
+        prependListener(event: 'connect', listener: (req: http.IncomingMessage, socket: Duplex, head: Buffer) => void): this;
+        prependListener(event: 'request', listener: http.RequestListener): this;
+        prependListener(event: 'upgrade', listener: (req: http.IncomingMessage, socket: Duplex, head: Buffer) => void): this;
+        prependOnceListener(event: string, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'keylog', listener: (line: Buffer, tlsSocket: tls.TLSSocket) => void): this;
+        prependOnceListener(event: 'newSession', listener: (sessionId: Buffer, sessionData: Buffer, callback: (err: Error, resp: Buffer) => void) => void): this;
+        prependOnceListener(event: 'OCSPRequest', listener: (certificate: Buffer, issuer: Buffer, callback: (err: Error | null, resp: Buffer) => void) => void): this;
+        prependOnceListener(event: 'resumeSession', listener: (sessionId: Buffer, callback: (err: Error, sessionData: Buffer) => void) => void): this;
+        prependOnceListener(event: 'secureConnection', listener: (tlsSocket: tls.TLSSocket) => void): this;
+        prependOnceListener(event: 'tlsClientError', listener: (err: Error, tlsSocket: tls.TLSSocket) => void): this;
+        prependOnceListener(event: 'close', listener: () => void): this;
+        prependOnceListener(event: 'connection', listener: (socket: Duplex) => void): this;
+        prependOnceListener(event: 'error', listener: (err: Error) => void): this;
+        prependOnceListener(event: 'listening', listener: () => void): this;
+        prependOnceListener(event: 'checkContinue', listener: http.RequestListener): this;
+        prependOnceListener(event: 'checkExpectation', listener: http.RequestListener): this;
+        prependOnceListener(event: 'clientError', listener: (err: Error, socket: Duplex) => void): this;
+        prependOnceListener(event: 'connect', listener: (req: http.IncomingMessage, socket: Duplex, head: Buffer) => void): this;
+        prependOnceListener(event: 'request', listener: http.RequestListener): this;
+        prependOnceListener(event: 'upgrade', listener: (req: http.IncomingMessage, socket: Duplex, head: Buffer) => void): this;
+    }
+    /**
+     * ```js
+     * // curl -k https://localhost:8000/
+     * const https = require('https');
+     * const fs = require('fs');
+     *
+     * const options = {
+     *   key: fs.readFileSync('test/fixtures/keys/agent2-key.pem'),
+     *   cert: fs.readFileSync('test/fixtures/keys/agent2-cert.pem')
+     * };
+     *
+     * https.createServer(options, (req, res) => {
+     *   res.writeHead(200);
+     *   res.end('hello world\n');
+     * }).listen(8000);
+     * ```
+     *
+     * Or
+     *
+     * ```js
+     * const https = require('https');
+     * const fs = require('fs');
+     *
+     * const options = {
+     *   pfx: fs.readFileSync('test/fixtures/test_cert.pfx'),
+     *   passphrase: 'sample'
+     * };
+     *
+     * https.createServer(options, (req, res) => {
+     *   res.writeHead(200);
+     *   res.end('hello world\n');
+     * }).listen(8000);
+     * ```
+     * @since v0.3.4
+     * @param options Accepts `options` from `createServer`, `createSecureContext` and `createServer`.
+     * @param requestListener A listener to be added to the `'request'` event.
+     */
+    function createServer(requestListener?: http.RequestListener): Server;
+    function createServer(options: ServerOptions, requestListener?: http.RequestListener): Server;
+    /**
+     * Makes a request to a secure web server.
+     *
+     * The following additional `options` from `tls.connect()` are also accepted:`ca`, `cert`, `ciphers`, `clientCertEngine`, `crl`, `dhparam`, `ecdhCurve`,`honorCipherOrder`, `key`, `passphrase`,
+     * `pfx`, `rejectUnauthorized`,`secureOptions`, `secureProtocol`, `servername`, `sessionIdContext`,`highWaterMark`.
+     *
+     * `options` can be an object, a string, or a `URL` object. If `options` is a
+     * string, it is automatically parsed with `new URL()`. If it is a `URL` object, it will be automatically converted to an ordinary `options` object.
+     *
+     * `https.request()` returns an instance of the `http.ClientRequest` class. The `ClientRequest` instance is a writable stream. If one needs to
+     * upload a file with a POST request, then write to the `ClientRequest` object.
+     *
+     * ```js
+     * const https = require('https');
+     *
+     * const options = {
+     *   hostname: 'encrypted.google.com',
+     *   port: 443,
+     *   path: '/',
+     *   method: 'GET'
+     * };
+     *
+     * const req = https.request(options, (res) => {
+     *   console.log('statusCode:', res.statusCode);
+     *   console.log('headers:', res.headers);
+     *
+     *   res.on('data', (d) => {
+     *     process.stdout.write(d);
+     *   });
+     * });
+     *
+     * req.on('error', (e) => {
+     *   console.error(e);
+     * });
+     * req.end();
+     * ```
+     *
+     * Example using options from `tls.connect()`:
+     *
+     * ```js
+     * const options = {
+     *   hostname: 'encrypted.google.com',
+     *   port: 443,
+     *   path: '/',
+     *   method: 'GET',
+     *   key: fs.readFileSync('test/fixtures/keys/agent2-key.pem'),
+     *   cert: fs.readFileSync('test/fixtures/keys/agent2-cert.pem')
+     * };
+     * options.agent = new https.Agent(options);
+     *
+     * const req = https.request(options, (res) => {
+     *   // ...
+     * });
+     * ```
+     *
+     * Alternatively, opt out of connection pooling by not using an `Agent`.
+     *
+     * ```js
+     * const options = {
+     *   hostname: 'encrypted.google.com',
+     *   port: 443,
+     *   path: '/',
+     *   method: 'GET',
+     *   key: fs.readFileSync('test/fixtures/keys/agent2-key.pem'),
+     *   cert: fs.readFileSync('test/fixtures/keys/agent2-cert.pem'),
+     *   agent: false
+     * };
+     *
+     * const req = https.request(options, (res) => {
+     *   // ...
+     * });
+     * ```
+     *
+     * Example using a `URL` as `options`:
+     *
+     * ```js
+     * const options = new URL('https://abc:xyz@example.com');
+     *
+     * const req = https.request(options, (res) => {
+     *   // ...
+     * });
+     * ```
+     *
+     * Example pinning on certificate fingerprint, or the public key (similar to`pin-sha256`):
+     *
+     * ```js
+     * const tls = require('tls');
+     * const https = require('https');
+     * const crypto = require('crypto');
+     *
+     * function sha256(s) {
+     *   return crypto.createHash('sha256').update(s).digest('base64');
+     * }
+     * const options = {
+     *   hostname: 'github.com',
+     *   port: 443,
+     *   path: '/',
+     *   method: 'GET',
+     *   checkServerIdentity: function(host, cert) {
+     *     // Make sure the certificate is issued to the host we are connected to
+     *     const err = tls.checkServerIdentity(host, cert);
+     *     if (err) {
+     *       return err;
+     *     }
+     *
+     *     // Pin the public key, similar to HPKP pin-sha25 pinning
+     *     const pubkey256 = 'pL1+qb9HTMRZJmuC/bB/ZI9d302BYrrqiVuRyW+DGrU=';
+     *     if (sha256(cert.pubkey) !== pubkey256) {
+     *       const msg = 'Certificate verification error: ' +
+     *         `The public key of '${cert.subject.CN}' ` +
+     *         'does not match our pinned fingerprint';
+     *       return new Error(msg);
+     *     }
+     *
+     *     // Pin the exact certificate, rather than the pub key
+     *     const cert256 = '25:FE:39:32:D9:63:8C:8A:FC:A1:9A:29:87:' +
+     *       'D8:3E:4C:1D:98:DB:71:E4:1A:48:03:98:EA:22:6A:BD:8B:93:16';
+     *     if (cert.fingerprint256 !== cert256) {
+     *       const msg = 'Certificate verification error: ' +
+     *         `The certificate of '${cert.subject.CN}' ` +
+     *         'does not match our pinned fingerprint';
+     *       return new Error(msg);
+     *     }
+     *
+     *     // This loop is informational only.
+     *     // Print the certificate and public key fingerprints of all certs in the
+     *     // chain. Its common to pin the public key of the issuer on the public
+     *     // internet, while pinning the public key of the service in sensitive
+     *     // environments.
+     *     do {
+     *       console.log('Subject Common Name:', cert.subject.CN);
+     *       console.log('  Certificate SHA256 fingerprint:', cert.fingerprint256);
+     *
+     *       hash = crypto.createHash('sha256');
+     *       console.log('  Public key ping-sha256:', sha256(cert.pubkey));
+     *
+     *       lastprint256 = cert.fingerprint256;
+     *       cert = cert.issuerCertificate;
+     *     } while (cert.fingerprint256 !== lastprint256);
+     *
+     *   },
+     * };
+     *
+     * options.agent = new https.Agent(options);
+     * const req = https.request(options, (res) => {
+     *   console.log('All OK. Server matched our pinned cert or public key');
+     *   console.log('statusCode:', res.statusCode);
+     *   // Print the HPKP values
+     *   console.log('headers:', res.headers['public-key-pins']);
+     *
+     *   res.on('data', (d) => {});
+     * });
+     *
+     * req.on('error', (e) => {
+     *   console.error(e.message);
+     * });
+     * req.end();
+     * ```
+     *
+     * Outputs for example:
+     *
+     * ```text
+     * Subject Common Name: github.com
+     *   Certificate SHA256 fingerprint: 25:FE:39:32:D9:63:8C:8A:FC:A1:9A:29:87:D8:3E:4C:1D:98:DB:71:E4:1A:48:03:98:EA:22:6A:BD:8B:93:16
+     *   Public key ping-sha256: pL1+qb9HTMRZJmuC/bB/ZI9d302BYrrqiVuRyW+DGrU=
+     * Subject Common Name: DigiCert SHA2 Extended Validation Server CA
+     *   Certificate SHA256 fingerprint: 40:3E:06:2A:26:53:05:91:13:28:5B:AF:80:A0:D4:AE:42:2C:84:8C:9F:78:FA:D0:1F:C9:4B:C5:B8:7F:EF:1A
+     *   Public key ping-sha256: RRM1dGqnDFsCJXBTHky16vi1obOlCgFFn/yOhI/y+ho=
+     * Subject Common Name: DigiCert High Assurance EV Root CA
+     *   Certificate SHA256 fingerprint: 74:31:E5:F4:C3:C1:CE:46:90:77:4F:0B:61:E0:54:40:88:3B:A9:A0:1E:D0:0B:A6:AB:D7:80:6E:D3:B1:18:CF
+     *   Public key ping-sha256: WoiWRyIOVNa9ihaBciRSC7XHjliYS9VwUGOIud4PB18=
+     * All OK. Server matched our pinned cert or public key
+     * statusCode: 200
+     * headers: max-age=0; pin-sha256="WoiWRyIOVNa9ihaBciRSC7XHjliYS9VwUGOIud4PB18="; pin-sha256="RRM1dGqnDFsCJXBTHky16vi1obOlCgFFn/yOhI/y+ho=";
+     * pin-sha256="k2v657xBsOVe1PQRwOsHsw3bsGT2VzIqz5K+59sNQws="; pin-sha256="K87oWBWM9UZfyddvDfoxL+8lpNyoUB2ptGtn0fv6G2Q="; pin-sha256="IQBnNBEiFuhj+8x6X8XLgh01V9Ic5/V3IRQLNFFc7v4=";
+     * pin-sha256="iie1VXtL7HzAMF+/PVPR9xzT80kQxdZeJ+zduCB3uj0="; pin-sha256="LvRiGEjRqfzurezaWuj8Wie2gyHMrW5Q06LspMnox7A="; includeSubDomains
+     * ```
+     * @since v0.3.6
+     * @param options Accepts all `options` from `request`, with some differences in default values:
+     */
+    function request(options: RequestOptions | string | URL, callback?: (res: http.IncomingMessage) => void): http.ClientRequest;
+    function request(url: string | URL, options: RequestOptions, callback?: (res: http.IncomingMessage) => void): http.ClientRequest;
+    /**
+     * Like `http.get()` but for HTTPS.
+     *
+     * `options` can be an object, a string, or a `URL` object. If `options` is a
+     * string, it is automatically parsed with `new URL()`. If it is a `URL` object, it will be automatically converted to an ordinary `options` object.
+     *
+     * ```js
+     * const https = require('https');
+     *
+     * https.get('https://encrypted.google.com/', (res) => {
+     *   console.log('statusCode:', res.statusCode);
+     *   console.log('headers:', res.headers);
+     *
+     *   res.on('data', (d) => {
+     *     process.stdout.write(d);
+     *   });
+     *
+     * }).on('error', (e) => {
+     *   console.error(e);
+     * });
+     * ```
+     * @since v0.3.6
+     * @param options Accepts the same `options` as {@link request}, with the `method` always set to `GET`.
+     */
+    function get(options: RequestOptions | string | URL, callback?: (res: http.IncomingMessage) => void): http.ClientRequest;
+    function get(url: string | URL, options: RequestOptions, callback?: (res: http.IncomingMessage) => void): http.ClientRequest;
+    let globalAgent: Agent;
+}
+declare module 'node:https' {
+    export * from 'https';
+}

backend/node_modules/@types/node/index.d.ts

@@ -0,0 +1,131 @@
+// Type definitions for non-npm package Node.js 17.0
+// Project: https://nodejs.org/
+// Definitions by: Microsoft TypeScript <https://github.com/Microsoft>
+//                 DefinitelyTyped <https://github.com/DefinitelyTyped>
+//                 Alberto Schiabel <https://github.com/jkomyno>
+//                 Alvis HT Tang <https://github.com/alvis>
+//                 Andrew Makarov <https://github.com/r3nya>
+//                 Benjamin Toueg <https://github.com/btoueg>
+//                 Chigozirim C. <https://github.com/smac89>
+//                 David Junger <https://github.com/touffy>
+//                 Deividas Bakanas <https://github.com/DeividasBakanas>
+//                 Eugene Y. Q. Shen <https://github.com/eyqs>
+//                 Hannes Magnusson <https://github.com/Hannes-Magnusson-CK>
+//                 Huw <https://github.com/hoo29>
+//                 Kelvin Jin <https://github.com/kjin>
+//                 Klaus Meinhardt <https://github.com/ajafff>
+//                 Lishude <https://github.com/islishude>
+//                 Mariusz Wiktorczyk <https://github.com/mwiktorczyk>
+//                 Mohsen Azimi <https://github.com/mohsen1>
+//                 Nicolas Even <https://github.com/n-e>
+//                 Nikita Galkin <https://github.com/galkin>
+//                 Parambir Singh <https://github.com/parambirs>
+//                 Sebastian Silbermann <https://github.com/eps1lon>
+//                 Seth Westphal <https://github.com/westy92>
+//                 Simon Schick <https://github.com/SimonSchick>
+//                 Thomas den Hollander <https://github.com/ThomasdenH>
+//                 Wilco Bakker <https://github.com/WilcoBakker>
+//                 wwwy3y3 <https://github.com/wwwy3y3>
+//                 Samuel Ainsworth <https://github.com/samuela>
+//                 Kyle Uehlein <https://github.com/kuehlein>
+//                 Thanik Bhongbhibhat <https://github.com/bhongy>
+//                 Marcin Kopacz <https://github.com/chyzwar>
+//                 Trivikram Kamat <https://github.com/trivikr>
+//                 Junxiao Shi <https://github.com/yoursunny>
+//                 Ilia Baryshnikov <https://github.com/qwelias>
+//                 ExE Boss <https://github.com/ExE-Boss>
+//                 Surasak Chaisurin <https://github.com/Ryan-Willpower>
+//                 Piotr Błażejewicz <https://github.com/peterblazejewicz>
+//                 Anna Henningsen <https://github.com/addaleax>
+//                 Victor Perin <https://github.com/victorperin>
+//                 Yongsheng Zhang <https://github.com/ZYSzys>
+//                 NodeJS Contributors <https://github.com/NodeJS>
+//                 Linus Unnebäck <https://github.com/LinusU>
+//                 wafuwafu13 <https://github.com/wafuwafu13>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+/**
+ * License for programmatically and manually incorporated
+ * documentation aka. `JSDoc` from https://github.com/nodejs/node/tree/master/doc
+ *
+ * Copyright Node.js contributors. All rights reserved.
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+// NOTE: These definitions support NodeJS and TypeScript 3.7+.
+
+// Reference required types from the default lib:
+/// <reference lib="es2020" />
+/// <reference lib="esnext.asynciterable" />
+/// <reference lib="esnext.intl" />
+/// <reference lib="esnext.bigint" />
+
+// Base definitions for all NodeJS modules that are not specific to any version of TypeScript:
+/// <reference path="assert.d.ts" />
+/// <reference path="assert/strict.d.ts" />
+/// <reference path="globals.d.ts" />
+/// <reference path="async_hooks.d.ts" />
+/// <reference path="buffer.d.ts" />
+/// <reference path="child_process.d.ts" />
+/// <reference path="cluster.d.ts" />
+/// <reference path="console.d.ts" />
+/// <reference path="constants.d.ts" />
+/// <reference path="crypto.d.ts" />
+/// <reference path="dgram.d.ts" />
+/// <reference path="diagnostics_channel.d.ts" />
+/// <reference path="dns.d.ts" />
+/// <reference path="dns/promises.d.ts" />
+/// <reference path="dns/promises.d.ts" />
+/// <reference path="domain.d.ts" />
+/// <reference path="events.d.ts" />
+/// <reference path="fs.d.ts" />
+/// <reference path="fs/promises.d.ts" />
+/// <reference path="http.d.ts" />
+/// <reference path="http2.d.ts" />
+/// <reference path="https.d.ts" />
+/// <reference path="inspector.d.ts" />
+/// <reference path="module.d.ts" />
+/// <reference path="net.d.ts" />
+/// <reference path="os.d.ts" />
+/// <reference path="path.d.ts" />
+/// <reference path="perf_hooks.d.ts" />
+/// <reference path="process.d.ts" />
+/// <reference path="punycode.d.ts" />
+/// <reference path="querystring.d.ts" />
+/// <reference path="readline.d.ts" />
+/// <reference path="repl.d.ts" />
+/// <reference path="stream.d.ts" />
+/// <reference path="stream/promises.d.ts" />
+/// <reference path="stream/consumers.d.ts" />
+/// <reference path="stream/web.d.ts" />
+/// <reference path="string_decoder.d.ts" />
+/// <reference path="timers.d.ts" />
+/// <reference path="timers/promises.d.ts" />
+/// <reference path="tls.d.ts" />
+/// <reference path="trace_events.d.ts" />
+/// <reference path="tty.d.ts" />
+/// <reference path="url.d.ts" />
+/// <reference path="util.d.ts" />
+/// <reference path="v8.d.ts" />
+/// <reference path="vm.d.ts" />
+/// <reference path="wasi.d.ts" />
+/// <reference path="worker_threads.d.ts" />
+/// <reference path="zlib.d.ts" />
+
+/// <reference path="globals.global.d.ts" />

backend/node_modules/@types/node/module.d.ts

@@ -0,0 +1,114 @@
+/**
+ * @since v0.3.7
+ */
+declare module 'module' {
+    import { URL } from 'node:url';
+    namespace Module {
+        /**
+         * The `module.syncBuiltinESMExports()` method updates all the live bindings for
+         * builtin `ES Modules` to match the properties of the `CommonJS` exports. It
+         * does not add or remove exported names from the `ES Modules`.
+         *
+         * ```js
+         * const fs = require('fs');
+         * const assert = require('assert');
+         * const { syncBuiltinESMExports } = require('module');
+         *
+         * fs.readFile = newAPI;
+         *
+         * delete fs.readFileSync;
+         *
+         * function newAPI() {
+         *   // ...
+         * }
+         *
+         * fs.newAPI = newAPI;
+         *
+         * syncBuiltinESMExports();
+         *
+         * import('fs').then((esmFS) => {
+         *   // It syncs the existing readFile property with the new value
+         *   assert.strictEqual(esmFS.readFile, newAPI);
+         *   // readFileSync has been deleted from the required fs
+         *   assert.strictEqual('readFileSync' in fs, false);
+         *   // syncBuiltinESMExports() does not remove readFileSync from esmFS
+         *   assert.strictEqual('readFileSync' in esmFS, true);
+         *   // syncBuiltinESMExports() does not add names
+         *   assert.strictEqual(esmFS.newAPI, undefined);
+         * });
+         * ```
+         * @since v12.12.0
+         */
+        function syncBuiltinESMExports(): void;
+        /**
+         * `path` is the resolved path for the file for which a corresponding source map
+         * should be fetched.
+         * @since v13.7.0, v12.17.0
+         */
+        function findSourceMap(path: string, error?: Error): SourceMap;
+        interface SourceMapPayload {
+            file: string;
+            version: number;
+            sources: string[];
+            sourcesContent: string[];
+            names: string[];
+            mappings: string;
+            sourceRoot: string;
+        }
+        interface SourceMapping {
+            generatedLine: number;
+            generatedColumn: number;
+            originalSource: string;
+            originalLine: number;
+            originalColumn: number;
+        }
+        /**
+         * @since v13.7.0, v12.17.0
+         */
+        class SourceMap {
+            /**
+             * Getter for the payload used to construct the `SourceMap` instance.
+             */
+            readonly payload: SourceMapPayload;
+            constructor(payload: SourceMapPayload);
+            /**
+             * Given a line number and column number in the generated source file, returns
+             * an object representing the position in the original file. The object returned
+             * consists of the following keys:
+             */
+            findEntry(line: number, column: number): SourceMapping;
+        }
+    }
+    interface Module extends NodeModule {}
+    class Module {
+        static runMain(): void;
+        static wrap(code: string): string;
+        static createRequire(path: string | URL): NodeRequire;
+        static builtinModules: string[];
+        static Module: typeof Module;
+        constructor(id: string, parent?: Module);
+    }
+    global {
+        interface ImportMeta {
+            url: string;
+            /**
+             * @experimental
+             * This feature is only available with the `--experimental-import-meta-resolve`
+             * command flag enabled.
+             *
+             * Provides a module-relative resolution function scoped to each module, returning
+             * the URL string.
+             *
+             * @param specified The module specifier to resolve relative to `parent`.
+             * @param parent The absolute parent module URL to resolve from. If none
+             * is specified, the value of `import.meta.url` is used as the default.
+             */
+            resolve?(specified: string, parent?: string | URL): Promise<string>;
+        }
+    }
+    export = Module;
+}
+declare module 'node:module' {
+    import module = require('module');
+    export = module;
+}

backend/node_modules/@types/node/net.d.ts

@@ -0,0 +1,784 @@
+/**
+ * > Stability: 2 - Stable
+ *
+ * The `net` module provides an asynchronous network API for creating stream-based
+ * TCP or `IPC` servers ({@link createServer}) and clients
+ * ({@link createConnection}).
+ *
+ * It can be accessed using:
+ *
+ * ```js
+ * const net = require('net');
+ * ```
+ * @see [source](https://github.com/nodejs/node/blob/v17.0.0/lib/net.js)
+ */
+declare module 'net' {
+    import * as stream from 'node:stream';
+    import { Abortable, EventEmitter } from 'node:events';
+    import * as dns from 'node:dns';
+    type LookupFunction = (hostname: string, options: dns.LookupOneOptions, callback: (err: NodeJS.ErrnoException | null, address: string, family: number) => void) => void;
+    interface AddressInfo {
+        address: string;
+        family: string;
+        port: number;
+    }
+    interface SocketConstructorOpts {
+        fd?: number | undefined;
+        allowHalfOpen?: boolean | undefined;
+        readable?: boolean | undefined;
+        writable?: boolean | undefined;
+        signal?: AbortSignal;
+    }
+    interface OnReadOpts {
+        buffer: Uint8Array | (() => Uint8Array);
+        /**
+         * This function is called for every chunk of incoming data.
+         * Two arguments are passed to it: the number of bytes written to buffer and a reference to buffer.
+         * Return false from this function to implicitly pause() the socket.
+         */
+        callback(bytesWritten: number, buf: Uint8Array): boolean;
+    }
+    interface ConnectOpts {
+        /**
+         * If specified, incoming data is stored in a single buffer and passed to the supplied callback when data arrives on the socket.
+         * Note: this will cause the streaming functionality to not provide any data, however events like 'error', 'end', and 'close' will
+         * still be emitted as normal and methods like pause() and resume() will also behave as expected.
+         */
+        onread?: OnReadOpts | undefined;
+    }
+    interface TcpSocketConnectOpts extends ConnectOpts {
+        port: number;
+        host?: string | undefined;
+        localAddress?: string | undefined;
+        localPort?: number | undefined;
+        hints?: number | undefined;
+        family?: number | undefined;
+        lookup?: LookupFunction | undefined;
+    }
+    interface IpcSocketConnectOpts extends ConnectOpts {
+        path: string;
+    }
+    type SocketConnectOpts = TcpSocketConnectOpts | IpcSocketConnectOpts;
+    /**
+     * This class is an abstraction of a TCP socket or a streaming `IPC` endpoint
+     * (uses named pipes on Windows, and Unix domain sockets otherwise). It is also
+     * an `EventEmitter`.
+     *
+     * A `net.Socket` can be created by the user and used directly to interact with
+     * a server. For example, it is returned by {@link createConnection},
+     * so the user can use it to talk to the server.
+     *
+     * It can also be created by Node.js and passed to the user when a connection
+     * is received. For example, it is passed to the listeners of a `'connection'` event emitted on a {@link Server}, so the user can use
+     * it to interact with the client.
+     * @since v0.3.4
+     */
+    class Socket extends stream.Duplex {
+        constructor(options?: SocketConstructorOpts);
+        /**
+         * Sends data on the socket. The second parameter specifies the encoding in the
+         * case of a string. It defaults to UTF8 encoding.
+         *
+         * Returns `true` if the entire data was flushed successfully to the kernel
+         * buffer. Returns `false` if all or part of the data was queued in user memory.`'drain'` will be emitted when the buffer is again free.
+         *
+         * The optional `callback` parameter will be executed when the data is finally
+         * written out, which may not be immediately.
+         *
+         * See `Writable` stream `write()` method for more
+         * information.
+         * @since v0.1.90
+         * @param [encoding='utf8'] Only used when data is `string`.
+         */
+        write(buffer: Uint8Array | string, cb?: (err?: Error) => void): boolean;
+        write(str: Uint8Array | string, encoding?: BufferEncoding, cb?: (err?: Error) => void): boolean;
+        /**
+         * Initiate a connection on a given socket.
+         *
+         * Possible signatures:
+         *
+         * * `socket.connect(options[, connectListener])`
+         * * `socket.connect(path[, connectListener])` for `IPC` connections.
+         * * `socket.connect(port[, host][, connectListener])` for TCP connections.
+         * * Returns: `net.Socket` The socket itself.
+         *
+         * This function is asynchronous. When the connection is established, the `'connect'` event will be emitted. If there is a problem connecting,
+         * instead of a `'connect'` event, an `'error'` event will be emitted with
+         * the error passed to the `'error'` listener.
+         * The last parameter `connectListener`, if supplied, will be added as a listener
+         * for the `'connect'` event **once**.
+         *
+         * This function should only be used for reconnecting a socket after`'close'` has been emitted or otherwise it may lead to undefined
+         * behavior.
+         */
+        connect(options: SocketConnectOpts, connectionListener?: () => void): this;
+        connect(port: number, host: string, connectionListener?: () => void): this;
+        connect(port: number, connectionListener?: () => void): this;
+        connect(path: string, connectionListener?: () => void): this;
+        /**
+         * Set the encoding for the socket as a `Readable Stream`. See `readable.setEncoding()` for more information.
+         * @since v0.1.90
+         * @return The socket itself.
+         */
+        setEncoding(encoding?: BufferEncoding): this;
+        /**
+         * Pauses the reading of data. That is, `'data'` events will not be emitted.
+         * Useful to throttle back an upload.
+         * @return The socket itself.
+         */
+        pause(): this;
+        /**
+         * Resumes reading after a call to `socket.pause()`.
+         * @return The socket itself.
+         */
+        resume(): this;
+        /**
+         * Sets the socket to timeout after `timeout` milliseconds of inactivity on
+         * the socket. By default `net.Socket` do not have a timeout.
+         *
+         * When an idle timeout is triggered the socket will receive a `'timeout'` event but the connection will not be severed. The user must manually call `socket.end()` or `socket.destroy()` to
+         * end the connection.
+         *
+         * ```js
+         * socket.setTimeout(3000);
+         * socket.on('timeout', () => {
+         *   console.log('socket timeout');
+         *   socket.end();
+         * });
+         * ```
+         *
+         * If `timeout` is 0, then the existing idle timeout is disabled.
+         *
+         * The optional `callback` parameter will be added as a one-time listener for the `'timeout'` event.
+         * @since v0.1.90
+         * @return The socket itself.
+         */
+        setTimeout(timeout: number, callback?: () => void): this;
+        /**
+         * Enable/disable the use of Nagle's algorithm.
+         *
+         * When a TCP connection is created, it will have Nagle's algorithm enabled.
+         *
+         * Nagle's algorithm delays data before it is sent via the network. It attempts
+         * to optimize throughput at the expense of latency.
+         *
+         * Passing `true` for `noDelay` or not passing an argument will disable Nagle's
+         * algorithm for the socket. Passing `false` for `noDelay` will enable Nagle's
+         * algorithm.
+         * @since v0.1.90
+         * @param [noDelay=true]
+         * @return The socket itself.
+         */
+        setNoDelay(noDelay?: boolean): this;
+        /**
+         * Enable/disable keep-alive functionality, and optionally set the initial
+         * delay before the first keepalive probe is sent on an idle socket.
+         *
+         * Set `initialDelay` (in milliseconds) to set the delay between the last
+         * data packet received and the first keepalive probe. Setting `0` for`initialDelay` will leave the value unchanged from the default
+         * (or previous) setting.
+         *
+         * Enabling the keep-alive functionality will set the following socket options:
+         *
+         * * `SO_KEEPALIVE=1`
+         * * `TCP_KEEPIDLE=initialDelay`
+         * * `TCP_KEEPCNT=10`
+         * * `TCP_KEEPINTVL=1`
+         * @since v0.1.92
+         * @param [enable=false]
+         * @param [initialDelay=0]
+         * @return The socket itself.
+         */
+        setKeepAlive(enable?: boolean, initialDelay?: number): this;
+        /**
+         * Returns the bound `address`, the address `family` name and `port` of the
+         * socket as reported by the operating system:`{ port: 12346, family: 'IPv4', address: '127.0.0.1' }`
+         * @since v0.1.90
+         */
+        address(): AddressInfo | {};
+        /**
+         * Calling `unref()` on a socket will allow the program to exit if this is the only
+         * active socket in the event system. If the socket is already `unref`ed calling`unref()` again will have no effect.
+         * @since v0.9.1
+         * @return The socket itself.
+         */
+        unref(): this;
+        /**
+         * Opposite of `unref()`, calling `ref()` on a previously `unref`ed socket will_not_ let the program exit if it's the only socket left (the default behavior).
+         * If the socket is `ref`ed calling `ref` again will have no effect.
+         * @since v0.9.1
+         * @return The socket itself.
+         */
+        ref(): this;
+        /**
+         * This property shows the number of characters buffered for writing. The buffer
+         * may contain strings whose length after encoding is not yet known. So this number
+         * is only an approximation of the number of bytes in the buffer.
+         *
+         * `net.Socket` has the property that `socket.write()` always works. This is to
+         * help users get up and running quickly. The computer cannot always keep up
+         * with the amount of data that is written to a socket. The network connection
+         * simply might be too slow. Node.js will internally queue up the data written to a
+         * socket and send it out over the wire when it is possible.
+         *
+         * The consequence of this internal buffering is that memory may grow.
+         * Users who experience large or growing `bufferSize` should attempt to
+         * "throttle" the data flows in their program with `socket.pause()` and `socket.resume()`.
+         * @since v0.3.8
+         * @deprecated Since v14.6.0 - Use `writableLength` instead.
+         */
+        readonly bufferSize: number;
+        /**
+         * The amount of received bytes.
+         * @since v0.5.3
+         */
+        readonly bytesRead: number;
+        /**
+         * The amount of bytes sent.
+         * @since v0.5.3
+         */
+        readonly bytesWritten: number;
+        /**
+         * If `true`,`socket.connect(options[, connectListener])` was
+         * called and has not yet finished. It will stay `true` until the socket becomes
+         * connected, then it is set to `false` and the `'connect'` event is emitted. Note
+         * that the `socket.connect(options[, connectListener])` callback is a listener for the `'connect'` event.
+         * @since v6.1.0
+         */
+        readonly connecting: boolean;
+        /**
+         * See `writable.destroyed` for further details.
+         */
+        readonly destroyed: boolean;
+        /**
+         * The string representation of the local IP address the remote client is
+         * connecting on. For example, in a server listening on `'0.0.0.0'`, if a client
+         * connects on `'192.168.1.1'`, the value of `socket.localAddress` would be`'192.168.1.1'`.
+         * @since v0.9.6
+         */
+        readonly localAddress?: string;
+        /**
+         * The numeric representation of the local port. For example, `80` or `21`.
+         * @since v0.9.6
+         */
+        readonly localPort?: number;
+        /**
+         * The string representation of the remote IP address. For example,`'74.125.127.100'` or `'2001:4860:a005::68'`. Value may be `undefined` if
+         * the socket is destroyed (for example, if the client disconnected).
+         * @since v0.5.10
+         */
+        readonly remoteAddress?: string | undefined;
+        /**
+         * The string representation of the remote IP family. `'IPv4'` or `'IPv6'`.
+         * @since v0.11.14
+         */
+        readonly remoteFamily?: string | undefined;
+        /**
+         * The numeric representation of the remote port. For example, `80` or `21`.
+         * @since v0.5.10
+         */
+        readonly remotePort?: number | undefined;
+        /**
+         * Half-closes the socket. i.e., it sends a FIN packet. It is possible the
+         * server will still send some data.
+         *
+         * See `writable.end()` for further details.
+         * @since v0.1.90
+         * @param [encoding='utf8'] Only used when data is `string`.
+         * @param callback Optional callback for when the socket is finished.
+         * @return The socket itself.
+         */
+        end(callback?: () => void): this;
+        end(buffer: Uint8Array | string, callback?: () => void): this;
+        end(str: Uint8Array | string, encoding?: BufferEncoding, callback?: () => void): this;
+        /**
+         * events.EventEmitter
+         *   1. close
+         *   2. connect
+         *   3. data
+         *   4. drain
+         *   5. end
+         *   6. error
+         *   7. lookup
+         *   8. timeout
+         */
+        addListener(event: string, listener: (...args: any[]) => void): this;
+        addListener(event: 'close', listener: (hadError: boolean) => void): this;
+        addListener(event: 'connect', listener: () => void): this;
+        addListener(event: 'data', listener: (data: Buffer) => void): this;
+        addListener(event: 'drain', listener: () => void): this;
+        addListener(event: 'end', listener: () => void): this;
+        addListener(event: 'error', listener: (err: Error) => void): this;
+        addListener(event: 'lookup', listener: (err: Error, address: string, family: string | number, host: string) => void): this;
+        addListener(event: 'ready', listener: () => void): this;
+        addListener(event: 'timeout', listener: () => void): this;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        emit(event: 'close', hadError: boolean): boolean;
+        emit(event: 'connect'): boolean;
+        emit(event: 'data', data: Buffer): boolean;
+        emit(event: 'drain'): boolean;
+        emit(event: 'end'): boolean;
+        emit(event: 'error', err: Error): boolean;
+        emit(event: 'lookup', err: Error, address: string, family: string | number, host: string): boolean;
+        emit(event: 'ready'): boolean;
+        emit(event: 'timeout'): boolean;
+        on(event: string, listener: (...args: any[]) => void): this;
+        on(event: 'close', listener: (hadError: boolean) => void): this;
+        on(event: 'connect', listener: () => void): this;
+        on(event: 'data', listener: (data: Buffer) => void): this;
+        on(event: 'drain', listener: () => void): this;
+        on(event: 'end', listener: () => void): this;
+        on(event: 'error', listener: (err: Error) => void): this;
+        on(event: 'lookup', listener: (err: Error, address: string, family: string | number, host: string) => void): this;
+        on(event: 'ready', listener: () => void): this;
+        on(event: 'timeout', listener: () => void): this;
+        once(event: string, listener: (...args: any[]) => void): this;
+        once(event: 'close', listener: (hadError: boolean) => void): this;
+        once(event: 'connect', listener: () => void): this;
+        once(event: 'data', listener: (data: Buffer) => void): this;
+        once(event: 'drain', listener: () => void): this;
+        once(event: 'end', listener: () => void): this;
+        once(event: 'error', listener: (err: Error) => void): this;
+        once(event: 'lookup', listener: (err: Error, address: string, family: string | number, host: string) => void): this;
+        once(event: 'ready', listener: () => void): this;
+        once(event: 'timeout', listener: () => void): this;
+        prependListener(event: string, listener: (...args: any[]) => void): this;
+        prependListener(event: 'close', listener: (hadError: boolean) => void): this;
+        prependListener(event: 'connect', listener: () => void): this;
+        prependListener(event: 'data', listener: (data: Buffer) => void): this;
+        prependListener(event: 'drain', listener: () => void): this;
+        prependListener(event: 'end', listener: () => void): this;
+        prependListener(event: 'error', listener: (err: Error) => void): this;
+        prependListener(event: 'lookup', listener: (err: Error, address: string, family: string | number, host: string) => void): this;
+        prependListener(event: 'ready', listener: () => void): this;
+        prependListener(event: 'timeout', listener: () => void): this;
+        prependOnceListener(event: string, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'close', listener: (hadError: boolean) => void): this;
+        prependOnceListener(event: 'connect', listener: () => void): this;
+        prependOnceListener(event: 'data', listener: (data: Buffer) => void): this;
+        prependOnceListener(event: 'drain', listener: () => void): this;
+        prependOnceListener(event: 'end', listener: () => void): this;
+        prependOnceListener(event: 'error', listener: (err: Error) => void): this;
+        prependOnceListener(event: 'lookup', listener: (err: Error, address: string, family: string | number, host: string) => void): this;
+        prependOnceListener(event: 'ready', listener: () => void): this;
+        prependOnceListener(event: 'timeout', listener: () => void): this;
+    }
+    interface ListenOptions extends Abortable {
+        port?: number | undefined;
+        host?: string | undefined;
+        backlog?: number | undefined;
+        path?: string | undefined;
+        exclusive?: boolean | undefined;
+        readableAll?: boolean | undefined;
+        writableAll?: boolean | undefined;
+        /**
+         * @default false
+         */
+        ipv6Only?: boolean | undefined;
+    }
+    interface ServerOpts {
+        /**
+         * Indicates whether half-opened TCP connections are allowed.
+         * @default false
+         */
+        allowHalfOpen?: boolean | undefined;
+        /**
+         * Indicates whether the socket should be paused on incoming connections.
+         * @default false
+         */
+        pauseOnConnect?: boolean | undefined;
+    }
+    /**
+     * This class is used to create a TCP or `IPC` server.
+     * @since v0.1.90
+     */
+    class Server extends EventEmitter {
+        constructor(connectionListener?: (socket: Socket) => void);
+        constructor(options?: ServerOpts, connectionListener?: (socket: Socket) => void);
+        /**
+         * Start a server listening for connections. A `net.Server` can be a TCP or
+         * an `IPC` server depending on what it listens to.
+         *
+         * Possible signatures:
+         *
+         * * `server.listen(handle[, backlog][, callback])`
+         * * `server.listen(options[, callback])`
+         * * `server.listen(path[, backlog][, callback])` for `IPC` servers
+         * * `server.listen([port[, host[, backlog]]][, callback])` for TCP servers
+         *
+         * This function is asynchronous. When the server starts listening, the `'listening'` event will be emitted. The last parameter `callback`will be added as a listener for the `'listening'`
+         * event.
+         *
+         * All `listen()` methods can take a `backlog` parameter to specify the maximum
+         * length of the queue of pending connections. The actual length will be determined
+         * by the OS through sysctl settings such as `tcp_max_syn_backlog` and `somaxconn`on Linux. The default value of this parameter is 511 (not 512).
+         *
+         * All {@link Socket} are set to `SO_REUSEADDR` (see [`socket(7)`](https://man7.org/linux/man-pages/man7/socket.7.html) for
+         * details).
+         *
+         * The `server.listen()` method can be called again if and only if there was an
+         * error during the first `server.listen()` call or `server.close()` has been
+         * called. Otherwise, an `ERR_SERVER_ALREADY_LISTEN` error will be thrown.
+         *
+         * One of the most common errors raised when listening is `EADDRINUSE`.
+         * This happens when another server is already listening on the requested`port`/`path`/`handle`. One way to handle this would be to retry
+         * after a certain amount of time:
+         *
+         * ```js
+         * server.on('error', (e) => {
+         *   if (e.code === 'EADDRINUSE') {
+         *     console.log('Address in use, retrying...');
+         *     setTimeout(() => {
+         *       server.close();
+         *       server.listen(PORT, HOST);
+         *     }, 1000);
+         *   }
+         * });
+         * ```
+         */
+        listen(port?: number, hostname?: string, backlog?: number, listeningListener?: () => void): this;
+        listen(port?: number, hostname?: string, listeningListener?: () => void): this;
+        listen(port?: number, backlog?: number, listeningListener?: () => void): this;
+        listen(port?: number, listeningListener?: () => void): this;
+        listen(path: string, backlog?: number, listeningListener?: () => void): this;
+        listen(path: string, listeningListener?: () => void): this;
+        listen(options: ListenOptions, listeningListener?: () => void): this;
+        listen(handle: any, backlog?: number, listeningListener?: () => void): this;
+        listen(handle: any, listeningListener?: () => void): this;
+        /**
+         * Stops the server from accepting new connections and keeps existing
+         * connections. This function is asynchronous, the server is finally closed
+         * when all connections are ended and the server emits a `'close'` event.
+         * The optional `callback` will be called once the `'close'` event occurs. Unlike
+         * that event, it will be called with an `Error` as its only argument if the server
+         * was not open when it was closed.
+         * @since v0.1.90
+         * @param callback Called when the server is closed.
+         */
+        close(callback?: (err?: Error) => void): this;
+        /**
+         * Returns the bound `address`, the address `family` name, and `port` of the server
+         * as reported by the operating system if listening on an IP socket
+         * (useful to find which port was assigned when getting an OS-assigned address):`{ port: 12346, family: 'IPv4', address: '127.0.0.1' }`.
+         *
+         * For a server listening on a pipe or Unix domain socket, the name is returned
+         * as a string.
+         *
+         * ```js
+         * const server = net.createServer((socket) => {
+         *   socket.end('goodbye\n');
+         * }).on('error', (err) => {
+         *   // Handle errors here.
+         *   throw err;
+         * });
+         *
+         * // Grab an arbitrary unused port.
+         * server.listen(() => {
+         *   console.log('opened server on', server.address());
+         * });
+         * ```
+         *
+         * `server.address()` returns `null` before the `'listening'` event has been
+         * emitted or after calling `server.close()`.
+         * @since v0.1.90
+         */
+        address(): AddressInfo | string | null;
+        /**
+         * Asynchronously get the number of concurrent connections on the server. Works
+         * when sockets were sent to forks.
+         *
+         * Callback should take two arguments `err` and `count`.
+         * @since v0.9.7
+         */
+        getConnections(cb: (error: Error | null, count: number) => void): void;
+        /**
+         * Opposite of `unref()`, calling `ref()` on a previously `unref`ed server will_not_ let the program exit if it's the only server left (the default behavior).
+         * If the server is `ref`ed calling `ref()` again will have no effect.
+         * @since v0.9.1
+         */
+        ref(): this;
+        /**
+         * Calling `unref()` on a server will allow the program to exit if this is the only
+         * active server in the event system. If the server is already `unref`ed calling`unref()` again will have no effect.
+         * @since v0.9.1
+         */
+        unref(): this;
+        /**
+         * Set this property to reject connections when the server's connection count gets
+         * high.
+         *
+         * It is not recommended to use this option once a socket has been sent to a child
+         * with `child_process.fork()`.
+         * @since v0.2.0
+         */
+        maxConnections: number;
+        connections: number;
+        /**
+         * Indicates whether or not the server is listening for connections.
+         * @since v5.7.0
+         */
+        listening: boolean;
+        /**
+         * events.EventEmitter
+         *   1. close
+         *   2. connection
+         *   3. error
+         *   4. listening
+         */
+        addListener(event: string, listener: (...args: any[]) => void): this;
+        addListener(event: 'close', listener: () => void): this;
+        addListener(event: 'connection', listener: (socket: Socket) => void): this;
+        addListener(event: 'error', listener: (err: Error) => void): this;
+        addListener(event: 'listening', listener: () => void): this;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        emit(event: 'close'): boolean;
+        emit(event: 'connection', socket: Socket): boolean;
+        emit(event: 'error', err: Error): boolean;
+        emit(event: 'listening'): boolean;
+        on(event: string, listener: (...args: any[]) => void): this;
+        on(event: 'close', listener: () => void): this;
+        on(event: 'connection', listener: (socket: Socket) => void): this;
+        on(event: 'error', listener: (err: Error) => void): this;
+        on(event: 'listening', listener: () => void): this;
+        once(event: string, listener: (...args: any[]) => void): this;
+        once(event: 'close', listener: () => void): this;
+        once(event: 'connection', listener: (socket: Socket) => void): this;
+        once(event: 'error', listener: (err: Error) => void): this;
+        once(event: 'listening', listener: () => void): this;
+        prependListener(event: string, listener: (...args: any[]) => void): this;
+        prependListener(event: 'close', listener: () => void): this;
+        prependListener(event: 'connection', listener: (socket: Socket) => void): this;
+        prependListener(event: 'error', listener: (err: Error) => void): this;
+        prependListener(event: 'listening', listener: () => void): this;
+        prependOnceListener(event: string, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'close', listener: () => void): this;
+        prependOnceListener(event: 'connection', listener: (socket: Socket) => void): this;
+        prependOnceListener(event: 'error', listener: (err: Error) => void): this;
+        prependOnceListener(event: 'listening', listener: () => void): this;
+    }
+    type IPVersion = 'ipv4' | 'ipv6';
+    /**
+     * The `BlockList` object can be used with some network APIs to specify rules for
+     * disabling inbound or outbound access to specific IP addresses, IP ranges, or
+     * IP subnets.
+     * @since v15.0.0, v14.18.0
+     */
+    class BlockList {
+        /**
+         * Adds a rule to block the given IP address.
+         * @since v15.0.0, v14.18.0
+         * @param address An IPv4 or IPv6 address.
+         * @param [type='ipv4'] Either `'ipv4'` or `'ipv6'`.
+         */
+        addAddress(address: string, type?: IPVersion): void;
+        addAddress(address: SocketAddress): void;
+        /**
+         * Adds a rule to block a range of IP addresses from `start` (inclusive) to`end` (inclusive).
+         * @since v15.0.0, v14.18.0
+         * @param start The starting IPv4 or IPv6 address in the range.
+         * @param end The ending IPv4 or IPv6 address in the range.
+         * @param [type='ipv4'] Either `'ipv4'` or `'ipv6'`.
+         */
+        addRange(start: string, end: string, type?: IPVersion): void;
+        addRange(start: SocketAddress, end: SocketAddress): void;
+        /**
+         * Adds a rule to block a range of IP addresses specified as a subnet mask.
+         * @since v15.0.0, v14.18.0
+         * @param net The network IPv4 or IPv6 address.
+         * @param prefix The number of CIDR prefix bits. For IPv4, this must be a value between `0` and `32`. For IPv6, this must be between `0` and `128`.
+         * @param [type='ipv4'] Either `'ipv4'` or `'ipv6'`.
+         */
+        addSubnet(net: SocketAddress, prefix: number): void;
+        addSubnet(net: string, prefix: number, type?: IPVersion): void;
+        /**
+         * Returns `true` if the given IP address matches any of the rules added to the`BlockList`.
+         *
+         * ```js
+         * const blockList = new net.BlockList();
+         * blockList.addAddress('123.123.123.123');
+         * blockList.addRange('10.0.0.1', '10.0.0.10');
+         * blockList.addSubnet('8592:757c:efae:4e45::', 64, 'ipv6');
+         *
+         * console.log(blockList.check('123.123.123.123'));  // Prints: true
+         * console.log(blockList.check('10.0.0.3'));  // Prints: true
+         * console.log(blockList.check('222.111.111.222'));  // Prints: false
+         *
+         * // IPv6 notation for IPv4 addresses works:
+         * console.log(blockList.check('::ffff:7b7b:7b7b', 'ipv6')); // Prints: true
+         * console.log(blockList.check('::ffff:123.123.123.123', 'ipv6')); // Prints: true
+         * ```
+         * @since v15.0.0, v14.18.0
+         * @param address The IP address to check
+         * @param [type='ipv4'] Either `'ipv4'` or `'ipv6'`.
+         */
+        check(address: SocketAddress): boolean;
+        check(address: string, type?: IPVersion): boolean;
+    }
+    interface TcpNetConnectOpts extends TcpSocketConnectOpts, SocketConstructorOpts {
+        timeout?: number | undefined;
+    }
+    interface IpcNetConnectOpts extends IpcSocketConnectOpts, SocketConstructorOpts {
+        timeout?: number | undefined;
+    }
+    type NetConnectOpts = TcpNetConnectOpts | IpcNetConnectOpts;
+    /**
+     * Creates a new TCP or `IPC` server.
+     *
+     * If `allowHalfOpen` is set to `true`, when the other end of the socket
+     * signals the end of transmission, the server will only send back the end of
+     * transmission when `socket.end()` is explicitly called. For example, in the
+     * context of TCP, when a FIN packed is received, a FIN packed is sent
+     * back only when `socket.end()` is explicitly called. Until then the
+     * connection is half-closed (non-readable but still writable). See `'end'` event and [RFC 1122](https://tools.ietf.org/html/rfc1122) (section 4.2.2.13) for more information.
+     *
+     * If `pauseOnConnect` is set to `true`, then the socket associated with each
+     * incoming connection will be paused, and no data will be read from its handle.
+     * This allows connections to be passed between processes without any data being
+     * read by the original process. To begin reading data from a paused socket, call `socket.resume()`.
+     *
+     * The server can be a TCP server or an `IPC` server, depending on what it `listen()` to.
+     *
+     * Here is an example of an TCP echo server which listens for connections
+     * on port 8124:
+     *
+     * ```js
+     * const net = require('net');
+     * const server = net.createServer((c) => {
+     *   // 'connection' listener.
+     *   console.log('client connected');
+     *   c.on('end', () => {
+     *     console.log('client disconnected');
+     *   });
+     *   c.write('hello\r\n');
+     *   c.pipe(c);
+     * });
+     * server.on('error', (err) => {
+     *   throw err;
+     * });
+     * server.listen(8124, () => {
+     *   console.log('server bound');
+     * });
+     * ```
+     *
+     * Test this by using `telnet`:
+     *
+     * ```console
+     * $ telnet localhost 8124
+     * ```
+     *
+     * To listen on the socket `/tmp/echo.sock`:
+     *
+     * ```js
+     * server.listen('/tmp/echo.sock', () => {
+     *   console.log('server bound');
+     * });
+     * ```
+     *
+     * Use `nc` to connect to a Unix domain socket server:
+     *
+     * ```console
+     * $ nc -U /tmp/echo.sock
+     * ```
+     * @since v0.5.0
+     * @param connectionListener Automatically set as a listener for the {@link 'connection'} event.
+     */
+    function createServer(connectionListener?: (socket: Socket) => void): Server;
+    function createServer(options?: ServerOpts, connectionListener?: (socket: Socket) => void): Server;
+    /**
+     * Aliases to {@link createConnection}.
+     *
+     * Possible signatures:
+     *
+     * * {@link connect}
+     * * {@link connect} for `IPC` connections.
+     * * {@link connect} for TCP connections.
+     */
+    function connect(options: NetConnectOpts, connectionListener?: () => void): Socket;
+    function connect(port: number, host?: string, connectionListener?: () => void): Socket;
+    function connect(path: string, connectionListener?: () => void): Socket;
+    /**
+     * A factory function, which creates a new {@link Socket},
+     * immediately initiates connection with `socket.connect()`,
+     * then returns the `net.Socket` that starts the connection.
+     *
+     * When the connection is established, a `'connect'` event will be emitted
+     * on the returned socket. The last parameter `connectListener`, if supplied,
+     * will be added as a listener for the `'connect'` event **once**.
+     *
+     * Possible signatures:
+     *
+     * * {@link createConnection}
+     * * {@link createConnection} for `IPC` connections.
+     * * {@link createConnection} for TCP connections.
+     *
+     * The {@link connect} function is an alias to this function.
+     */
+    function createConnection(options: NetConnectOpts, connectionListener?: () => void): Socket;
+    function createConnection(port: number, host?: string, connectionListener?: () => void): Socket;
+    function createConnection(path: string, connectionListener?: () => void): Socket;
+    /**
+     * Tests if input is an IP address. Returns `0` for invalid strings,
+     * returns `4` for IP version 4 addresses, and returns `6` for IP version 6
+     * addresses.
+     * @since v0.3.0
+     */
+    function isIP(input: string): number;
+    /**
+     * Returns `true` if input is a version 4 IP address, otherwise returns `false`.
+     * @since v0.3.0
+     */
+    function isIPv4(input: string): boolean;
+    /**
+     * Returns `true` if input is a version 6 IP address, otherwise returns `false`.
+     * @since v0.3.0
+     */
+    function isIPv6(input: string): boolean;
+    interface SocketAddressInitOptions {
+        /**
+         * The network address as either an IPv4 or IPv6 string.
+         * @default 127.0.0.1
+         */
+        address?: string | undefined;
+        /**
+         * @default `'ipv4'`
+         */
+        family?: IPVersion | undefined;
+        /**
+         * An IPv6 flow-label used only if `family` is `'ipv6'`.
+         * @default 0
+         */
+        flowlabel?: number | undefined;
+        /**
+         * An IP port.
+         * @default 0
+         */
+        port?: number | undefined;
+    }
+    /**
+     * @since v15.14.0, v14.18.0
+     */
+    class SocketAddress {
+        constructor(options: SocketAddressInitOptions);
+        /**
+         * Either \`'ipv4'\` or \`'ipv6'\`.
+         * @since v15.14.0, v14.18.0
+         */
+        readonly address: string;
+        /**
+         * Either \`'ipv4'\` or \`'ipv6'\`.
+         * @since v15.14.0, v14.18.0
+         */
+        readonly family: IPVersion;
+        /**
+         * @since v15.14.0, v14.18.0
+         */
+        readonly port: number;
+        /**
+         * @since v15.14.0, v14.18.0
+         */
+        readonly flowlabel: number;
+    }
+}
+declare module 'node:net' {
+    export * from 'net';
+}

backend/node_modules/@types/node/os.d.ts

@@ -0,0 +1,455 @@
+/**
+ * The `os` module provides operating system-related utility methods and
+ * properties. It can be accessed using:
+ *
+ * ```js
+ * const os = require('os');
+ * ```
+ * @see [source](https://github.com/nodejs/node/blob/v17.0.0/lib/os.js)
+ */
+declare module 'os' {
+    interface CpuInfo {
+        model: string;
+        speed: number;
+        times: {
+            user: number;
+            nice: number;
+            sys: number;
+            idle: number;
+            irq: number;
+        };
+    }
+    interface NetworkInterfaceBase {
+        address: string;
+        netmask: string;
+        mac: string;
+        internal: boolean;
+        cidr: string | null;
+    }
+    interface NetworkInterfaceInfoIPv4 extends NetworkInterfaceBase {
+        family: 'IPv4';
+    }
+    interface NetworkInterfaceInfoIPv6 extends NetworkInterfaceBase {
+        family: 'IPv6';
+        scopeid: number;
+    }
+    interface UserInfo<T> {
+        username: T;
+        uid: number;
+        gid: number;
+        shell: T;
+        homedir: T;
+    }
+    type NetworkInterfaceInfo = NetworkInterfaceInfoIPv4 | NetworkInterfaceInfoIPv6;
+    /**
+     * Returns the host name of the operating system as a string.
+     * @since v0.3.3
+     */
+    function hostname(): string;
+    /**
+     * Returns an array containing the 1, 5, and 15 minute load averages.
+     *
+     * The load average is a measure of system activity calculated by the operating
+     * system and expressed as a fractional number.
+     *
+     * The load average is a Unix-specific concept. On Windows, the return value is
+     * always `[0, 0, 0]`.
+     * @since v0.3.3
+     */
+    function loadavg(): number[];
+    /**
+     * Returns the system uptime in number of seconds.
+     * @since v0.3.3
+     */
+    function uptime(): number;
+    /**
+     * Returns the amount of free system memory in bytes as an integer.
+     * @since v0.3.3
+     */
+    function freemem(): number;
+    /**
+     * Returns the total amount of system memory in bytes as an integer.
+     * @since v0.3.3
+     */
+    function totalmem(): number;
+    /**
+     * Returns an array of objects containing information about each logical CPU core.
+     *
+     * The properties included on each object include:
+     *
+     * ```js
+     * [
+     *   {
+     *     model: 'Intel(R) Core(TM) i7 CPU         860  @ 2.80GHz',
+     *     speed: 2926,
+     *     times: {
+     *       user: 252020,
+     *       nice: 0,
+     *       sys: 30340,
+     *       idle: 1070356870,
+     *       irq: 0
+     *     }
+     *   },
+     *   {
+     *     model: 'Intel(R) Core(TM) i7 CPU         860  @ 2.80GHz',
+     *     speed: 2926,
+     *     times: {
+     *       user: 306960,
+     *       nice: 0,
+     *       sys: 26980,
+     *       idle: 1071569080,
+     *       irq: 0
+     *     }
+     *   },
+     *   {
+     *     model: 'Intel(R) Core(TM) i7 CPU         860  @ 2.80GHz',
+     *     speed: 2926,
+     *     times: {
+     *       user: 248450,
+     *       nice: 0,
+     *       sys: 21750,
+     *       idle: 1070919370,
+     *       irq: 0
+     *     }
+     *   },
+     *   {
+     *     model: 'Intel(R) Core(TM) i7 CPU         860  @ 2.80GHz',
+     *     speed: 2926,
+     *     times: {
+     *       user: 256880,
+     *       nice: 0,
+     *       sys: 19430,
+     *       idle: 1070905480,
+     *       irq: 20
+     *     }
+     *   },
+     * ]
+     * ```
+     *
+     * `nice` values are POSIX-only. On Windows, the `nice` values of all processors
+     * are always 0.
+     * @since v0.3.3
+     */
+    function cpus(): CpuInfo[];
+    /**
+     * Returns the operating system name as returned by [`uname(3)`](https://linux.die.net/man/3/uname). For example, it
+     * returns `'Linux'` on Linux, `'Darwin'` on macOS, and `'Windows_NT'` on Windows.
+     *
+     * See [https://en.wikipedia.org/wiki/Uname#Examples](https://en.wikipedia.org/wiki/Uname#Examples) for additional information
+     * about the output of running [`uname(3)`](https://linux.die.net/man/3/uname) on various operating systems.
+     * @since v0.3.3
+     */
+    function type(): string;
+    /**
+     * Returns the operating system as a string.
+     *
+     * On POSIX systems, the operating system release is determined by calling [`uname(3)`](https://linux.die.net/man/3/uname). On Windows, `GetVersionExW()` is used. See
+     * [https://en.wikipedia.org/wiki/Uname#Examples](https://en.wikipedia.org/wiki/Uname#Examples) for more information.
+     * @since v0.3.3
+     */
+    function release(): string;
+    /**
+     * Returns an object containing network interfaces that have been assigned a
+     * network address.
+     *
+     * Each key on the returned object identifies a network interface. The associated
+     * value is an array of objects that each describe an assigned network address.
+     *
+     * The properties available on the assigned network address object include:
+     *
+     * ```js
+     * {
+     *   lo: [
+     *     {
+     *       address: '127.0.0.1',
+     *       netmask: '255.0.0.0',
+     *       family: 'IPv4',
+     *       mac: '00:00:00:00:00:00',
+     *       internal: true,
+     *       cidr: '127.0.0.1/8'
+     *     },
+     *     {
+     *       address: '::1',
+     *       netmask: 'ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff',
+     *       family: 'IPv6',
+     *       mac: '00:00:00:00:00:00',
+     *       scopeid: 0,
+     *       internal: true,
+     *       cidr: '::1/128'
+     *     }
+     *   ],
+     *   eth0: [
+     *     {
+     *       address: '192.168.1.108',
+     *       netmask: '255.255.255.0',
+     *       family: 'IPv4',
+     *       mac: '01:02:03:0a:0b:0c',
+     *       internal: false,
+     *       cidr: '192.168.1.108/24'
+     *     },
+     *     {
+     *       address: 'fe80::a00:27ff:fe4e:66a1',
+     *       netmask: 'ffff:ffff:ffff:ffff::',
+     *       family: 'IPv6',
+     *       mac: '01:02:03:0a:0b:0c',
+     *       scopeid: 1,
+     *       internal: false,
+     *       cidr: 'fe80::a00:27ff:fe4e:66a1/64'
+     *     }
+     *   ]
+     * }
+     * ```
+     * @since v0.6.0
+     */
+    function networkInterfaces(): NodeJS.Dict<NetworkInterfaceInfo[]>;
+    /**
+     * Returns the string path of the current user's home directory.
+     *
+     * On POSIX, it uses the `$HOME` environment variable if defined. Otherwise it
+     * uses the [effective UID](https://en.wikipedia.org/wiki/User_identifier#Effective_user_ID) to look up the user's home directory.
+     *
+     * On Windows, it uses the `USERPROFILE` environment variable if defined.
+     * Otherwise it uses the path to the profile directory of the current user.
+     * @since v2.3.0
+     */
+    function homedir(): string;
+    /**
+     * Returns information about the currently effective user. On POSIX platforms,
+     * this is typically a subset of the password file. The returned object includes
+     * the `username`, `uid`, `gid`, `shell`, and `homedir`. On Windows, the `uid` and`gid` fields are `-1`, and `shell` is `null`.
+     *
+     * The value of `homedir` returned by `os.userInfo()` is provided by the operating
+     * system. This differs from the result of `os.homedir()`, which queries
+     * environment variables for the home directory before falling back to the
+     * operating system response.
+     *
+     * Throws a `SystemError` if a user has no `username` or `homedir`.
+     * @since v6.0.0
+     */
+    function userInfo(options: { encoding: 'buffer' }): UserInfo<Buffer>;
+    function userInfo(options?: { encoding: BufferEncoding }): UserInfo<string>;
+    type SignalConstants = {
+        [key in NodeJS.Signals]: number;
+    };
+    namespace constants {
+        const UV_UDP_REUSEADDR: number;
+        namespace signals {}
+        const signals: SignalConstants;
+        namespace errno {
+            const E2BIG: number;
+            const EACCES: number;
+            const EADDRINUSE: number;
+            const EADDRNOTAVAIL: number;
+            const EAFNOSUPPORT: number;
+            const EAGAIN: number;
+            const EALREADY: number;
+            const EBADF: number;
+            const EBADMSG: number;
+            const EBUSY: number;
+            const ECANCELED: number;
+            const ECHILD: number;
+            const ECONNABORTED: number;
+            const ECONNREFUSED: number;
+            const ECONNRESET: number;
+            const EDEADLK: number;
+            const EDESTADDRREQ: number;
+            const EDOM: number;
+            const EDQUOT: number;
+            const EEXIST: number;
+            const EFAULT: number;
+            const EFBIG: number;
+            const EHOSTUNREACH: number;
+            const EIDRM: number;
+            const EILSEQ: number;
+            const EINPROGRESS: number;
+            const EINTR: number;
+            const EINVAL: number;
+            const EIO: number;
+            const EISCONN: number;
+            const EISDIR: number;
+            const ELOOP: number;
+            const EMFILE: number;
+            const EMLINK: number;
+            const EMSGSIZE: number;
+            const EMULTIHOP: number;
+            const ENAMETOOLONG: number;
+            const ENETDOWN: number;
+            const ENETRESET: number;
+            const ENETUNREACH: number;
+            const ENFILE: number;
+            const ENOBUFS: number;
+            const ENODATA: number;
+            const ENODEV: number;
+            const ENOENT: number;
+            const ENOEXEC: number;
+            const ENOLCK: number;
+            const ENOLINK: number;
+            const ENOMEM: number;
+            const ENOMSG: number;
+            const ENOPROTOOPT: number;
+            const ENOSPC: number;
+            const ENOSR: number;
+            const ENOSTR: number;
+            const ENOSYS: number;
+            const ENOTCONN: number;
+            const ENOTDIR: number;
+            const ENOTEMPTY: number;
+            const ENOTSOCK: number;
+            const ENOTSUP: number;
+            const ENOTTY: number;
+            const ENXIO: number;
+            const EOPNOTSUPP: number;
+            const EOVERFLOW: number;
+            const EPERM: number;
+            const EPIPE: number;
+            const EPROTO: number;
+            const EPROTONOSUPPORT: number;
+            const EPROTOTYPE: number;
+            const ERANGE: number;
+            const EROFS: number;
+            const ESPIPE: number;
+            const ESRCH: number;
+            const ESTALE: number;
+            const ETIME: number;
+            const ETIMEDOUT: number;
+            const ETXTBSY: number;
+            const EWOULDBLOCK: number;
+            const EXDEV: number;
+            const WSAEINTR: number;
+            const WSAEBADF: number;
+            const WSAEACCES: number;
+            const WSAEFAULT: number;
+            const WSAEINVAL: number;
+            const WSAEMFILE: number;
+            const WSAEWOULDBLOCK: number;
+            const WSAEINPROGRESS: number;
+            const WSAEALREADY: number;
+            const WSAENOTSOCK: number;
+            const WSAEDESTADDRREQ: number;
+            const WSAEMSGSIZE: number;
+            const WSAEPROTOTYPE: number;
+            const WSAENOPROTOOPT: number;
+            const WSAEPROTONOSUPPORT: number;
+            const WSAESOCKTNOSUPPORT: number;
+            const WSAEOPNOTSUPP: number;
+            const WSAEPFNOSUPPORT: number;
+            const WSAEAFNOSUPPORT: number;
+            const WSAEADDRINUSE: number;
+            const WSAEADDRNOTAVAIL: number;
+            const WSAENETDOWN: number;
+            const WSAENETUNREACH: number;
+            const WSAENETRESET: number;
+            const WSAECONNABORTED: number;
+            const WSAECONNRESET: number;
+            const WSAENOBUFS: number;
+            const WSAEISCONN: number;
+            const WSAENOTCONN: number;
+            const WSAESHUTDOWN: number;
+            const WSAETOOMANYREFS: number;
+            const WSAETIMEDOUT: number;
+            const WSAECONNREFUSED: number;
+            const WSAELOOP: number;
+            const WSAENAMETOOLONG: number;
+            const WSAEHOSTDOWN: number;
+            const WSAEHOSTUNREACH: number;
+            const WSAENOTEMPTY: number;
+            const WSAEPROCLIM: number;
+            const WSAEUSERS: number;
+            const WSAEDQUOT: number;
+            const WSAESTALE: number;
+            const WSAEREMOTE: number;
+            const WSASYSNOTREADY: number;
+            const WSAVERNOTSUPPORTED: number;
+            const WSANOTINITIALISED: number;
+            const WSAEDISCON: number;
+            const WSAENOMORE: number;
+            const WSAECANCELLED: number;
+            const WSAEINVALIDPROCTABLE: number;
+            const WSAEINVALIDPROVIDER: number;
+            const WSAEPROVIDERFAILEDINIT: number;
+            const WSASYSCALLFAILURE: number;
+            const WSASERVICE_NOT_FOUND: number;
+            const WSATYPE_NOT_FOUND: number;
+            const WSA_E_NO_MORE: number;
+            const WSA_E_CANCELLED: number;
+            const WSAEREFUSED: number;
+        }
+        namespace priority {
+            const PRIORITY_LOW: number;
+            const PRIORITY_BELOW_NORMAL: number;
+            const PRIORITY_NORMAL: number;
+            const PRIORITY_ABOVE_NORMAL: number;
+            const PRIORITY_HIGH: number;
+            const PRIORITY_HIGHEST: number;
+        }
+    }
+    const devNull: string;
+    const EOL: string;
+    /**
+     * Returns the operating system CPU architecture for which the Node.js binary was
+     * compiled. Possible values are `'arm'`, `'arm64'`, `'ia32'`, `'mips'`,`'mipsel'`, `'ppc'`, `'ppc64'`, `'s390'`, `'s390x'`, `'x32'`, and `'x64'`.
+     *
+     * The return value is equivalent to `process.arch`.
+     * @since v0.5.0
+     */
+    function arch(): string;
+    /**
+     * Returns a string identifying the kernel version.
+     *
+     * On POSIX systems, the operating system release is determined by calling [`uname(3)`](https://linux.die.net/man/3/uname). On Windows, `RtlGetVersion()` is used, and if it is not
+     * available, `GetVersionExW()` will be used. See [https://en.wikipedia.org/wiki/Uname#Examples](https://en.wikipedia.org/wiki/Uname#Examples) for more information.
+     * @since v13.11.0, v12.17.0
+     */
+    function version(): string;
+    /**
+     * Returns a string identifying the operating system platform. The value is set
+     * at compile time. Possible values are `'aix'`, `'darwin'`, `'freebsd'`,`'linux'`, `'openbsd'`, `'sunos'`, and `'win32'`.
+     *
+     * The return value is equivalent to `process.platform`.
+     *
+     * The value `'android'` may also be returned if Node.js is built on the Android
+     * operating system. [Android support is experimental](https://github.com/nodejs/node/blob/HEAD/BUILDING.md#androidandroid-based-devices-eg-firefox-os).
+     * @since v0.5.0
+     */
+    function platform(): NodeJS.Platform;
+    /**
+     * Returns the operating system's default directory for temporary files as a
+     * string.
+     * @since v0.9.9
+     */
+    function tmpdir(): string;
+    /**
+     * Returns a string identifying the endianness of the CPU for which the Node.js
+     * binary was compiled.
+     *
+     * Possible values are `'BE'` for big endian and `'LE'` for little endian.
+     * @since v0.9.4
+     */
+    function endianness(): 'BE' | 'LE';
+    /**
+     * Returns the scheduling priority for the process specified by `pid`. If `pid` is
+     * not provided or is `0`, the priority of the current process is returned.
+     * @since v10.10.0
+     * @param [pid=0] The process ID to retrieve scheduling priority for.
+     */
+    function getPriority(pid?: number): number;
+    /**
+     * Attempts to set the scheduling priority for the process specified by `pid`. If`pid` is not provided or is `0`, the process ID of the current process is used.
+     *
+     * The `priority` input must be an integer between `-20` (high priority) and `19`(low priority). Due to differences between Unix priority levels and Windows
+     * priority classes, `priority` is mapped to one of six priority constants in`os.constants.priority`. When retrieving a process priority level, this range
+     * mapping may cause the return value to be slightly different on Windows. To avoid
+     * confusion, set `priority` to one of the priority constants.
+     *
+     * On Windows, setting priority to `PRIORITY_HIGHEST` requires elevated user
+     * privileges. Otherwise the set priority will be silently reduced to`PRIORITY_HIGH`.
+     * @since v10.10.0
+     * @param [pid=0] The process ID to set scheduling priority for.
+     * @param priority The scheduling priority to assign to the process.
+     */
+    function setPriority(priority: number): void;
+    function setPriority(pid: number, priority: number): void;
+}
+declare module 'node:os' {
+    export * from 'os';
+}

backend/node_modules/@types/node/package.json

@@ -0,0 +1,230 @@
+{
+    "name": "@types/node",
+    "version": "17.0.8",
+    "description": "TypeScript definitions for Node.js",
+    "homepage": "https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/node",
+    "license": "MIT",
+    "contributors": [
+        {
+            "name": "Microsoft TypeScript",
+            "url": "https://github.com/Microsoft",
+            "githubUsername": "Microsoft"
+        },
+        {
+            "name": "DefinitelyTyped",
+            "url": "https://github.com/DefinitelyTyped",
+            "githubUsername": "DefinitelyTyped"
+        },
+        {
+            "name": "Alberto Schiabel",
+            "url": "https://github.com/jkomyno",
+            "githubUsername": "jkomyno"
+        },
+        {
+            "name": "Alvis HT Tang",
+            "url": "https://github.com/alvis",
+            "githubUsername": "alvis"
+        },
+        {
+            "name": "Andrew Makarov",
+            "url": "https://github.com/r3nya",
+            "githubUsername": "r3nya"
+        },
+        {
+            "name": "Benjamin Toueg",
+            "url": "https://github.com/btoueg",
+            "githubUsername": "btoueg"
+        },
+        {
+            "name": "Chigozirim C.",
+            "url": "https://github.com/smac89",
+            "githubUsername": "smac89"
+        },
+        {
+            "name": "David Junger",
+            "url": "https://github.com/touffy",
+            "githubUsername": "touffy"
+        },
+        {
+            "name": "Deividas Bakanas",
+            "url": "https://github.com/DeividasBakanas",
+            "githubUsername": "DeividasBakanas"
+        },
+        {
+            "name": "Eugene Y. Q. Shen",
+            "url": "https://github.com/eyqs",
+            "githubUsername": "eyqs"
+        },
+        {
+            "name": "Hannes Magnusson",
+            "url": "https://github.com/Hannes-Magnusson-CK",
+            "githubUsername": "Hannes-Magnusson-CK"
+        },
+        {
+            "name": "Huw",
+            "url": "https://github.com/hoo29",
+            "githubUsername": "hoo29"
+        },
+        {
+            "name": "Kelvin Jin",
+            "url": "https://github.com/kjin",
+            "githubUsername": "kjin"
+        },
+        {
+            "name": "Klaus Meinhardt",
+            "url": "https://github.com/ajafff",
+            "githubUsername": "ajafff"
+        },
+        {
+            "name": "Lishude",
+            "url": "https://github.com/islishude",
+            "githubUsername": "islishude"
+        },
+        {
+            "name": "Mariusz Wiktorczyk",
+            "url": "https://github.com/mwiktorczyk",
+            "githubUsername": "mwiktorczyk"
+        },
+        {
+            "name": "Mohsen Azimi",
+            "url": "https://github.com/mohsen1",
+            "githubUsername": "mohsen1"
+        },
+        {
+            "name": "Nicolas Even",
+            "url": "https://github.com/n-e",
+            "githubUsername": "n-e"
+        },
+        {
+            "name": "Nikita Galkin",
+            "url": "https://github.com/galkin",
+            "githubUsername": "galkin"
+        },
+        {
+            "name": "Parambir Singh",
+            "url": "https://github.com/parambirs",
+            "githubUsername": "parambirs"
+        },
+        {
+            "name": "Sebastian Silbermann",
+            "url": "https://github.com/eps1lon",
+            "githubUsername": "eps1lon"
+        },
+        {
+            "name": "Seth Westphal",
+            "url": "https://github.com/westy92",
+            "githubUsername": "westy92"
+        },
+        {
+            "name": "Simon Schick",
+            "url": "https://github.com/SimonSchick",
+            "githubUsername": "SimonSchick"
+        },
+        {
+            "name": "Thomas den Hollander",
+            "url": "https://github.com/ThomasdenH",
+            "githubUsername": "ThomasdenH"
+        },
+        {
+            "name": "Wilco Bakker",
+            "url": "https://github.com/WilcoBakker",
+            "githubUsername": "WilcoBakker"
+        },
+        {
+            "name": "wwwy3y3",
+            "url": "https://github.com/wwwy3y3",
+            "githubUsername": "wwwy3y3"
+        },
+        {
+            "name": "Samuel Ainsworth",
+            "url": "https://github.com/samuela",
+            "githubUsername": "samuela"
+        },
+        {
+            "name": "Kyle Uehlein",
+            "url": "https://github.com/kuehlein",
+            "githubUsername": "kuehlein"
+        },
+        {
+            "name": "Thanik Bhongbhibhat",
+            "url": "https://github.com/bhongy",
+            "githubUsername": "bhongy"
+        },
+        {
+            "name": "Marcin Kopacz",
+            "url": "https://github.com/chyzwar",
+            "githubUsername": "chyzwar"
+        },
+        {
+            "name": "Trivikram Kamat",
+            "url": "https://github.com/trivikr",
+            "githubUsername": "trivikr"
+        },
+        {
+            "name": "Junxiao Shi",
+            "url": "https://github.com/yoursunny",
+            "githubUsername": "yoursunny"
+        },
+        {
+            "name": "Ilia Baryshnikov",
+            "url": "https://github.com/qwelias",
+            "githubUsername": "qwelias"
+        },
+        {
+            "name": "ExE Boss",
+            "url": "https://github.com/ExE-Boss",
+            "githubUsername": "ExE-Boss"
+        },
+        {
+            "name": "Surasak Chaisurin",
+            "url": "https://github.com/Ryan-Willpower",
+            "githubUsername": "Ryan-Willpower"
+        },
+        {
+            "name": "Piotr Błażejewicz",
+            "url": "https://github.com/peterblazejewicz",
+            "githubUsername": "peterblazejewicz"
+        },
+        {
+            "name": "Anna Henningsen",
+            "url": "https://github.com/addaleax",
+            "githubUsername": "addaleax"
+        },
+        {
+            "name": "Victor Perin",
+            "url": "https://github.com/victorperin",
+            "githubUsername": "victorperin"
+        },
+        {
+            "name": "Yongsheng Zhang",
+            "url": "https://github.com/ZYSzys",
+            "githubUsername": "ZYSzys"
+        },
+        {
+            "name": "NodeJS Contributors",
+            "url": "https://github.com/NodeJS",
+            "githubUsername": "NodeJS"
+        },
+        {
+            "name": "Linus Unnebäck",
+            "url": "https://github.com/LinusU",
+            "githubUsername": "LinusU"
+        },
+        {
+            "name": "wafuwafu13",
+            "url": "https://github.com/wafuwafu13",
+            "githubUsername": "wafuwafu13"
+        }
+    ],
+    "main": "",
+    "types": "index.d.ts",
+    "repository": {
+        "type": "git",
+        "url": "https://github.com/DefinitelyTyped/DefinitelyTyped.git",
+        "directory": "types/node"
+    },
+    "scripts": {},
+    "dependencies": {},
+    "typesPublisherContentHash": "133a958e0122898f222d66bf1e776d90a38ee878a694bbe229cf5e02db71deef",
+    "typeScriptVersion": "3.8"
+}

backend/node_modules/@types/node/path.d.ts

@@ -0,0 +1,180 @@
+declare module 'path/posix' {
+    import path = require('path');
+    export = path;
+}
+declare module 'path/win32' {
+    import path = require('path');
+    export = path;
+}
+/**
+ * The `path` module provides utilities for working with file and directory paths.
+ * It can be accessed using:
+ *
+ * ```js
+ * const path = require('path');
+ * ```
+ * @see [source](https://github.com/nodejs/node/blob/v17.0.0/lib/path.js)
+ */
+declare module 'path' {
+    namespace path {
+        /**
+         * A parsed path object generated by path.parse() or consumed by path.format().
+         */
+        interface ParsedPath {
+            /**
+             * The root of the path such as '/' or 'c:\'
+             */
+            root: string;
+            /**
+             * The full directory path such as '/home/user/dir' or 'c:\path\dir'
+             */
+            dir: string;
+            /**
+             * The file name including extension (if any) such as 'index.html'
+             */
+            base: string;
+            /**
+             * The file extension (if any) such as '.html'
+             */
+            ext: string;
+            /**
+             * The file name without extension (if any) such as 'index'
+             */
+            name: string;
+        }
+        interface FormatInputPathObject {
+            /**
+             * The root of the path such as '/' or 'c:\'
+             */
+            root?: string | undefined;
+            /**
+             * The full directory path such as '/home/user/dir' or 'c:\path\dir'
+             */
+            dir?: string | undefined;
+            /**
+             * The file name including extension (if any) such as 'index.html'
+             */
+            base?: string | undefined;
+            /**
+             * The file extension (if any) such as '.html'
+             */
+            ext?: string | undefined;
+            /**
+             * The file name without extension (if any) such as 'index'
+             */
+            name?: string | undefined;
+        }
+        interface PlatformPath {
+            /**
+             * Normalize a string path, reducing '..' and '.' parts.
+             * When multiple slashes are found, they're replaced by a single one; when the path contains a trailing slash, it is preserved. On Windows backslashes are used.
+             *
+             * @param p string path to normalize.
+             */
+            normalize(p: string): string;
+            /**
+             * Join all arguments together and normalize the resulting path.
+             * Arguments must be strings. In v0.8, non-string arguments were silently ignored. In v0.10 and up, an exception is thrown.
+             *
+             * @param paths paths to join.
+             */
+            join(...paths: string[]): string;
+            /**
+             * The right-most parameter is considered {to}.  Other parameters are considered an array of {from}.
+             *
+             * Starting from leftmost {from} parameter, resolves {to} to an absolute path.
+             *
+             * If {to} isn't already absolute, {from} arguments are prepended in right to left order,
+             * until an absolute path is found. If after using all {from} paths still no absolute path is found,
+             * the current working directory is used as well. The resulting path is normalized,
+             * and trailing slashes are removed unless the path gets resolved to the root directory.
+             *
+             * @param pathSegments string paths to join.  Non-string arguments are ignored.
+             */
+            resolve(...pathSegments: string[]): string;
+            /**
+             * Determines whether {path} is an absolute path. An absolute path will always resolve to the same location, regardless of the working directory.
+             *
+             * @param path path to test.
+             */
+            isAbsolute(p: string): boolean;
+            /**
+             * Solve the relative path from {from} to {to}.
+             * At times we have two absolute paths, and we need to derive the relative path from one to the other. This is actually the reverse transform of path.resolve.
+             */
+            relative(from: string, to: string): string;
+            /**
+             * Return the directory name of a path. Similar to the Unix dirname command.
+             *
+             * @param p the path to evaluate.
+             */
+            dirname(p: string): string;
+            /**
+             * Return the last portion of a path. Similar to the Unix basename command.
+             * Often used to extract the file name from a fully qualified path.
+             *
+             * @param p the path to evaluate.
+             * @param ext optionally, an extension to remove from the result.
+             */
+            basename(p: string, ext?: string): string;
+            /**
+             * Return the extension of the path, from the last '.' to end of string in the last portion of the path.
+             * If there is no '.' in the last portion of the path or the first character of it is '.', then it returns an empty string
+             *
+             * @param p the path to evaluate.
+             */
+            extname(p: string): string;
+            /**
+             * The platform-specific file separator. '\\' or '/'.
+             */
+            readonly sep: string;
+            /**
+             * The platform-specific file delimiter. ';' or ':'.
+             */
+            readonly delimiter: string;
+            /**
+             * Returns an object from a path string - the opposite of format().
+             *
+             * @param pathString path to evaluate.
+             */
+            parse(p: string): ParsedPath;
+            /**
+             * Returns a path string from an object - the opposite of parse().
+             *
+             * @param pathString path to evaluate.
+             */
+            format(pP: FormatInputPathObject): string;
+            /**
+             * On Windows systems only, returns an equivalent namespace-prefixed path for the given path.
+             * If path is not a string, path will be returned without modifications.
+             * This method is meaningful only on Windows system.
+             * On POSIX systems, the method is non-operational and always returns path without modifications.
+             */
+            toNamespacedPath(path: string): string;
+            /**
+             * Posix specific pathing.
+             * Same as parent object on posix.
+             */
+            readonly posix: PlatformPath;
+            /**
+             * Windows specific pathing.
+             * Same as parent object on windows
+             */
+            readonly win32: PlatformPath;
+        }
+    }
+    const path: path.PlatformPath;
+    export = path;
+}
+declare module 'node:path' {
+    import path = require('path');
+    export = path;
+}
+declare module 'node:path/posix' {
+    import path = require('path/posix');
+    export = path;
+}
+declare module 'node:path/win32' {
+    import path = require('path/win32');
+    export = path;
+}

backend/node_modules/@types/node/perf_hooks.d.ts

@@ -0,0 +1,557 @@
+/**
+ * This module provides an implementation of a subset of the W3C [Web Performance APIs](https://w3c.github.io/perf-timing-primer/) as well as additional APIs for
+ * Node.js-specific performance measurements.
+ *
+ * Node.js supports the following [Web Performance APIs](https://w3c.github.io/perf-timing-primer/):
+ *
+ * * [High Resolution Time](https://www.w3.org/TR/hr-time-2)
+ * * [Performance Timeline](https://w3c.github.io/performance-timeline/)
+ * * [User Timing](https://www.w3.org/TR/user-timing/)
+ *
+ * ```js
+ * const { PerformanceObserver, performance } = require('perf_hooks');
+ *
+ * const obs = new PerformanceObserver((items) => {
+ *   console.log(items.getEntries()[0].duration);
+ *   performance.clearMarks();
+ * });
+ * obs.observe({ type: 'measure' });
+ * performance.measure('Start to Now');
+ *
+ * performance.mark('A');
+ * doSomeLongRunningProcess(() => {
+ *   performance.measure('A to Now', 'A');
+ *
+ *   performance.mark('B');
+ *   performance.measure('A to B', 'A', 'B');
+ * });
+ * ```
+ * @see [source](https://github.com/nodejs/node/blob/v17.0.0/lib/perf_hooks.js)
+ */
+declare module 'perf_hooks' {
+    import { AsyncResource } from 'node:async_hooks';
+    type EntryType = 'node' | 'mark' | 'measure' | 'gc' | 'function' | 'http2' | 'http';
+    interface NodeGCPerformanceDetail {
+        /**
+         * When `performanceEntry.entryType` is equal to 'gc', `the performance.kind` property identifies
+         * the type of garbage collection operation that occurred.
+         * See perf_hooks.constants for valid values.
+         */
+        readonly kind?: number | undefined;
+        /**
+         * When `performanceEntry.entryType` is equal to 'gc', the `performance.flags`
+         * property contains additional information about garbage collection operation.
+         * See perf_hooks.constants for valid values.
+         */
+        readonly flags?: number | undefined;
+    }
+    /**
+     * @since v8.5.0
+     */
+    class PerformanceEntry {
+        protected constructor();
+        /**
+         * The total number of milliseconds elapsed for this entry. This value will not
+         * be meaningful for all Performance Entry types.
+         * @since v8.5.0
+         */
+        readonly duration: number;
+        /**
+         * The name of the performance entry.
+         * @since v8.5.0
+         */
+        readonly name: string;
+        /**
+         * The high resolution millisecond timestamp marking the starting time of the
+         * Performance Entry.
+         * @since v8.5.0
+         */
+        readonly startTime: number;
+        /**
+         * The type of the performance entry. It may be one of:
+         *
+         * * `'node'` (Node.js only)
+         * * `'mark'` (available on the Web)
+         * * `'measure'` (available on the Web)
+         * * `'gc'` (Node.js only)
+         * * `'function'` (Node.js only)
+         * * `'http2'` (Node.js only)
+         * * `'http'` (Node.js only)
+         * @since v8.5.0
+         */
+        readonly entryType: EntryType;
+        /**
+         * Additional detail specific to the `entryType`.
+         * @since v16.0.0
+         */
+        readonly detail?: NodeGCPerformanceDetail | unknown | undefined; // TODO: Narrow this based on entry type.
+    }
+    /**
+     * _This property is an extension by Node.js. It is not available in Web browsers._
+     *
+     * Provides timing details for Node.js itself. The constructor of this class
+     * is not exposed to users.
+     * @since v8.5.0
+     */
+    class PerformanceNodeTiming extends PerformanceEntry {
+        /**
+         * The high resolution millisecond timestamp at which the Node.js process
+         * completed bootstrapping. If bootstrapping has not yet finished, the property
+         * has the value of -1.
+         * @since v8.5.0
+         */
+        readonly bootstrapComplete: number;
+        /**
+         * The high resolution millisecond timestamp at which the Node.js environment was
+         * initialized.
+         * @since v8.5.0
+         */
+        readonly environment: number;
+        /**
+         * The high resolution millisecond timestamp of the amount of time the event loop
+         * has been idle within the event loop's event provider (e.g. `epoll_wait`). This
+         * does not take CPU usage into consideration. If the event loop has not yet
+         * started (e.g., in the first tick of the main script), the property has the
+         * value of 0.
+         * @since v14.10.0, v12.19.0
+         */
+        readonly idleTime: number;
+        /**
+         * The high resolution millisecond timestamp at which the Node.js event loop
+         * exited. If the event loop has not yet exited, the property has the value of -1\.
+         * It can only have a value of not -1 in a handler of the `'exit'` event.
+         * @since v8.5.0
+         */
+        readonly loopExit: number;
+        /**
+         * The high resolution millisecond timestamp at which the Node.js event loop
+         * started. If the event loop has not yet started (e.g., in the first tick of the
+         * main script), the property has the value of -1.
+         * @since v8.5.0
+         */
+        readonly loopStart: number;
+        /**
+         * The high resolution millisecond timestamp at which the V8 platform was
+         * initialized.
+         * @since v8.5.0
+         */
+        readonly v8Start: number;
+    }
+    interface EventLoopUtilization {
+        idle: number;
+        active: number;
+        utilization: number;
+    }
+    /**
+     * @param util1 The result of a previous call to eventLoopUtilization()
+     * @param util2 The result of a previous call to eventLoopUtilization() prior to util1
+     */
+    type EventLoopUtilityFunction = (util1?: EventLoopUtilization, util2?: EventLoopUtilization) => EventLoopUtilization;
+    interface MarkOptions {
+        /**
+         * Additional optional detail to include with the mark.
+         */
+        detail?: unknown | undefined;
+        /**
+         * An optional timestamp to be used as the mark time.
+         * @default `performance.now()`.
+         */
+        startTime?: number | undefined;
+    }
+    interface MeasureOptions {
+        /**
+         * Additional optional detail to include with the mark.
+         */
+        detail?: unknown | undefined;
+        /**
+         * Duration between start and end times.
+         */
+        duration?: number | undefined;
+        /**
+         * Timestamp to be used as the end time, or a string identifying a previously recorded mark.
+         */
+        end?: number | string | undefined;
+        /**
+         * Timestamp to be used as the start time, or a string identifying a previously recorded mark.
+         */
+        start?: number | string | undefined;
+    }
+    interface TimerifyOptions {
+        /**
+         * A histogram object created using
+         * `perf_hooks.createHistogram()` that will record runtime durations in
+         * nanoseconds.
+         */
+        histogram?: RecordableHistogram | undefined;
+    }
+    interface Performance {
+        /**
+         * If name is not provided, removes all PerformanceMark objects from the Performance Timeline.
+         * If name is provided, removes only the named mark.
+         * @param name
+         */
+        clearMarks(name?: string): void;
+        /**
+         * Creates a new PerformanceMark entry in the Performance Timeline.
+         * A PerformanceMark is a subclass of PerformanceEntry whose performanceEntry.entryType is always 'mark',
+         * and whose performanceEntry.duration is always 0.
+         * Performance marks are used to mark specific significant moments in the Performance Timeline.
+         * @param name
+         */
+        mark(name?: string, options?: MarkOptions): void;
+        /**
+         * Creates a new PerformanceMeasure entry in the Performance Timeline.
+         * A PerformanceMeasure is a subclass of PerformanceEntry whose performanceEntry.entryType is always 'measure',
+         * and whose performanceEntry.duration measures the number of milliseconds elapsed since startMark and endMark.
+         *
+         * The startMark argument may identify any existing PerformanceMark in the the Performance Timeline, or may identify
+         * any of the timestamp properties provided by the PerformanceNodeTiming class. If the named startMark does not exist,
+         * then startMark is set to timeOrigin by default.
+         *
+         * The endMark argument must identify any existing PerformanceMark in the the Performance Timeline or any of the timestamp
+         * properties provided by the PerformanceNodeTiming class. If the named endMark does not exist, an error will be thrown.
+         * @param name
+         * @param startMark
+         * @param endMark
+         */
+        measure(name: string, startMark?: string, endMark?: string): void;
+        measure(name: string, options: MeasureOptions): void;
+        /**
+         * An instance of the PerformanceNodeTiming class that provides performance metrics for specific Node.js operational milestones.
+         */
+        readonly nodeTiming: PerformanceNodeTiming;
+        /**
+         * @return the current high resolution millisecond timestamp
+         */
+        now(): number;
+        /**
+         * The timeOrigin specifies the high resolution millisecond timestamp from which all performance metric durations are measured.
+         */
+        readonly timeOrigin: number;
+        /**
+         * Wraps a function within a new function that measures the running time of the wrapped function.
+         * A PerformanceObserver must be subscribed to the 'function' event type in order for the timing details to be accessed.
+         * @param fn
+         */
+        timerify<T extends (...params: any[]) => any>(fn: T, options?: TimerifyOptions): T;
+        /**
+         * eventLoopUtilization is similar to CPU utilization except that it is calculated using high precision wall-clock time.
+         * It represents the percentage of time the event loop has spent outside the event loop's event provider (e.g. epoll_wait).
+         * No other CPU idle time is taken into consideration.
+         */
+        eventLoopUtilization: EventLoopUtilityFunction;
+    }
+    interface PerformanceObserverEntryList {
+        /**
+         * Returns a list of `PerformanceEntry` objects in chronological order
+         * with respect to `performanceEntry.startTime`.
+         *
+         * ```js
+         * const {
+         *   performance,
+         *   PerformanceObserver
+         * } = require('perf_hooks');
+         *
+         * const obs = new PerformanceObserver((perfObserverList, observer) => {
+         *   console.log(perfObserverList.getEntries());
+         *
+         *    * [
+         *    *   PerformanceEntry {
+         *    *     name: 'test',
+         *    *     entryType: 'mark',
+         *    *     startTime: 81.465639,
+         *    *     duration: 0
+         *    *   },
+         *    *   PerformanceEntry {
+         *    *     name: 'meow',
+         *    *     entryType: 'mark',
+         *    *     startTime: 81.860064,
+         *    *     duration: 0
+         *    *   }
+         *    * ]
+         *
+         *   observer.disconnect();
+         * });
+         * obs.observe({ type: 'mark' });
+         *
+         * performance.mark('test');
+         * performance.mark('meow');
+         * ```
+         * @since v8.5.0
+         */
+        getEntries(): PerformanceEntry[];
+        /**
+         * Returns a list of `PerformanceEntry` objects in chronological order
+         * with respect to `performanceEntry.startTime` whose `performanceEntry.name` is
+         * equal to `name`, and optionally, whose `performanceEntry.entryType` is equal to`type`.
+         *
+         * ```js
+         * const {
+         *   performance,
+         *   PerformanceObserver
+         * } = require('perf_hooks');
+         *
+         * const obs = new PerformanceObserver((perfObserverList, observer) => {
+         *   console.log(perfObserverList.getEntriesByName('meow'));
+         *
+         *    * [
+         *    *   PerformanceEntry {
+         *    *     name: 'meow',
+         *    *     entryType: 'mark',
+         *    *     startTime: 98.545991,
+         *    *     duration: 0
+         *    *   }
+         *    * ]
+         *
+         *   console.log(perfObserverList.getEntriesByName('nope')); // []
+         *
+         *   console.log(perfObserverList.getEntriesByName('test', 'mark'));
+         *
+         *    * [
+         *    *   PerformanceEntry {
+         *    *     name: 'test',
+         *    *     entryType: 'mark',
+         *    *     startTime: 63.518931,
+         *    *     duration: 0
+         *    *   }
+         *    * ]
+         *
+         *   console.log(perfObserverList.getEntriesByName('test', 'measure')); // []
+         *   observer.disconnect();
+         * });
+         * obs.observe({ entryTypes: ['mark', 'measure'] });
+         *
+         * performance.mark('test');
+         * performance.mark('meow');
+         * ```
+         * @since v8.5.0
+         */
+        getEntriesByName(name: string, type?: EntryType): PerformanceEntry[];
+        /**
+         * Returns a list of `PerformanceEntry` objects in chronological order
+         * with respect to `performanceEntry.startTime` whose `performanceEntry.entryType`is equal to `type`.
+         *
+         * ```js
+         * const {
+         *   performance,
+         *   PerformanceObserver
+         * } = require('perf_hooks');
+         *
+         * const obs = new PerformanceObserver((perfObserverList, observer) => {
+         *   console.log(perfObserverList.getEntriesByType('mark'));
+         *
+         *    * [
+         *    *   PerformanceEntry {
+         *    *     name: 'test',
+         *    *     entryType: 'mark',
+         *    *     startTime: 55.897834,
+         *    *     duration: 0
+         *    *   },
+         *    *   PerformanceEntry {
+         *    *     name: 'meow',
+         *    *     entryType: 'mark',
+         *    *     startTime: 56.350146,
+         *    *     duration: 0
+         *    *   }
+         *    * ]
+         *
+         *   observer.disconnect();
+         * });
+         * obs.observe({ type: 'mark' });
+         *
+         * performance.mark('test');
+         * performance.mark('meow');
+         * ```
+         * @since v8.5.0
+         */
+        getEntriesByType(type: EntryType): PerformanceEntry[];
+    }
+    type PerformanceObserverCallback = (list: PerformanceObserverEntryList, observer: PerformanceObserver) => void;
+    class PerformanceObserver extends AsyncResource {
+        constructor(callback: PerformanceObserverCallback);
+        /**
+         * Disconnects the `PerformanceObserver` instance from all notifications.
+         * @since v8.5.0
+         */
+        disconnect(): void;
+        /**
+         * Subscribes the `PerformanceObserver` instance to notifications of new `PerformanceEntry` instances identified either by `options.entryTypes`or `options.type`:
+         *
+         * ```js
+         * const {
+         *   performance,
+         *   PerformanceObserver
+         * } = require('perf_hooks');
+         *
+         * const obs = new PerformanceObserver((list, observer) => {
+         *   // Called three times synchronously. `list` contains one item.
+         * });
+         * obs.observe({ type: 'mark' });
+         *
+         * for (let n = 0; n < 3; n++)
+         *   performance.mark(`test${n}`);
+         * ```
+         * @since v8.5.0
+         */
+        observe(
+            options:
+                | {
+                      entryTypes: ReadonlyArray<EntryType>;
+                      buffered?: boolean | undefined;
+                  }
+                | {
+                      type: EntryType;
+                      buffered?: boolean | undefined;
+                  }
+        ): void;
+    }
+    namespace constants {
+        const NODE_PERFORMANCE_GC_MAJOR: number;
+        const NODE_PERFORMANCE_GC_MINOR: number;
+        const NODE_PERFORMANCE_GC_INCREMENTAL: number;
+        const NODE_PERFORMANCE_GC_WEAKCB: number;
+        const NODE_PERFORMANCE_GC_FLAGS_NO: number;
+        const NODE_PERFORMANCE_GC_FLAGS_CONSTRUCT_RETAINED: number;
+        const NODE_PERFORMANCE_GC_FLAGS_FORCED: number;
+        const NODE_PERFORMANCE_GC_FLAGS_SYNCHRONOUS_PHANTOM_PROCESSING: number;
+        const NODE_PERFORMANCE_GC_FLAGS_ALL_AVAILABLE_GARBAGE: number;
+        const NODE_PERFORMANCE_GC_FLAGS_ALL_EXTERNAL_MEMORY: number;
+        const NODE_PERFORMANCE_GC_FLAGS_SCHEDULE_IDLE: number;
+    }
+    const performance: Performance;
+    interface EventLoopMonitorOptions {
+        /**
+         * The sampling rate in milliseconds.
+         * Must be greater than zero.
+         * @default 10
+         */
+        resolution?: number | undefined;
+    }
+    interface Histogram {
+        /**
+         * Returns a `Map` object detailing the accumulated percentile distribution.
+         * @since v11.10.0
+         */
+        readonly percentiles: Map<number, number>;
+        /**
+         * The number of times the event loop delay exceeded the maximum 1 hour event
+         * loop delay threshold.
+         * @since v11.10.0
+         */
+        readonly exceeds: number;
+        /**
+         * The minimum recorded event loop delay.
+         * @since v11.10.0
+         */
+        readonly min: number;
+        /**
+         * The maximum recorded event loop delay.
+         * @since v11.10.0
+         */
+        readonly max: number;
+        /**
+         * The mean of the recorded event loop delays.
+         * @since v11.10.0
+         */
+        readonly mean: number;
+        /**
+         * The standard deviation of the recorded event loop delays.
+         * @since v11.10.0
+         */
+        readonly stddev: number;
+        /**
+         * Resets the collected histogram data.
+         * @since v11.10.0
+         */
+        reset(): void;
+        /**
+         * Returns the value at the given percentile.
+         * @since v11.10.0
+         * @param percentile A percentile value in the range (0, 100].
+         */
+        percentile(percentile: number): number;
+    }
+    interface IntervalHistogram extends Histogram {
+        /**
+         * Enables the update interval timer. Returns `true` if the timer was
+         * started, `false` if it was already started.
+         * @since v11.10.0
+         */
+        enable(): boolean;
+        /**
+         * Disables the update interval timer. Returns `true` if the timer was
+         * stopped, `false` if it was already stopped.
+         * @since v11.10.0
+         */
+        disable(): boolean;
+    }
+    interface RecordableHistogram extends Histogram {
+        /**
+         * @since v15.9.0, v14.18.0
+         * @param val The amount to record in the histogram.
+         */
+        record(val: number | bigint): void;
+        /**
+         * Calculates the amount of time (in nanoseconds) that has passed since the
+         * previous call to `recordDelta()` and records that amount in the histogram.
+         *
+         * ## Examples
+         * @since v15.9.0, v14.18.0
+         */
+        recordDelta(): void;
+    }
+    /**
+     * _This property is an extension by Node.js. It is not available in Web browsers._
+     *
+     * Creates an `IntervalHistogram` object that samples and reports the event loop
+     * delay over time. The delays will be reported in nanoseconds.
+     *
+     * Using a timer to detect approximate event loop delay works because the
+     * execution of timers is tied specifically to the lifecycle of the libuv
+     * event loop. That is, a delay in the loop will cause a delay in the execution
+     * of the timer, and those delays are specifically what this API is intended to
+     * detect.
+     *
+     * ```js
+     * const { monitorEventLoopDelay } = require('perf_hooks');
+     * const h = monitorEventLoopDelay({ resolution: 20 });
+     * h.enable();
+     * // Do something.
+     * h.disable();
+     * console.log(h.min);
+     * console.log(h.max);
+     * console.log(h.mean);
+     * console.log(h.stddev);
+     * console.log(h.percentiles);
+     * console.log(h.percentile(50));
+     * console.log(h.percentile(99));
+     * ```
+     * @since v11.10.0
+     */
+    function monitorEventLoopDelay(options?: EventLoopMonitorOptions): IntervalHistogram;
+    interface CreateHistogramOptions {
+        /**
+         * The minimum recordable value. Must be an integer value greater than 0.
+         * @default 1
+         */
+        min?: number | bigint | undefined;
+        /**
+         * The maximum recordable value. Must be an integer value greater than min.
+         * @default Number.MAX_SAFE_INTEGER
+         */
+        max?: number | bigint | undefined;
+        /**
+         * The number of accuracy digits. Must be a number between 1 and 5.
+         * @default 3
+         */
+        figures?: number | undefined;
+    }
+    /**
+     * Returns a `RecordableHistogram`.
+     * @since v15.9.0, v14.18.0
+     */
+    function createHistogram(options?: CreateHistogramOptions): RecordableHistogram;
+}
+declare module 'node:perf_hooks' {
+    export * from 'perf_hooks';
+}

backend/node_modules/@types/node/punycode.d.ts

@@ -0,0 +1,117 @@
+/**
+ * **The version of the punycode module bundled in Node.js is being deprecated.**In a future major version of Node.js this module will be removed. Users
+ * currently depending on the `punycode` module should switch to using the
+ * userland-provided [Punycode.js](https://github.com/bestiejs/punycode.js) module instead. For punycode-based URL
+ * encoding, see `url.domainToASCII` or, more generally, the `WHATWG URL API`.
+ *
+ * The `punycode` module is a bundled version of the [Punycode.js](https://github.com/bestiejs/punycode.js) module. It
+ * can be accessed using:
+ *
+ * ```js
+ * const punycode = require('punycode');
+ * ```
+ *
+ * [Punycode](https://tools.ietf.org/html/rfc3492) is a character encoding scheme defined by RFC 3492 that is
+ * primarily intended for use in Internationalized Domain Names. Because host
+ * names in URLs are limited to ASCII characters only, Domain Names that contain
+ * non-ASCII characters must be converted into ASCII using the Punycode scheme.
+ * For instance, the Japanese character that translates into the English word,`'example'` is `'例'`. The Internationalized Domain Name, `'例.com'` (equivalent
+ * to `'example.com'`) is represented by Punycode as the ASCII string`'xn--fsq.com'`.
+ *
+ * The `punycode` module provides a simple implementation of the Punycode standard.
+ *
+ * The `punycode` module is a third-party dependency used by Node.js and
+ * made available to developers as a convenience. Fixes or other modifications to
+ * the module must be directed to the [Punycode.js](https://github.com/bestiejs/punycode.js) project.
+ * @deprecated Since v7.0.0 - Deprecated
+ * @see [source](https://github.com/nodejs/node/blob/v17.0.0/lib/punycode.js)
+ */
+declare module 'punycode' {
+    /**
+     * The `punycode.decode()` method converts a [Punycode](https://tools.ietf.org/html/rfc3492) string of ASCII-only
+     * characters to the equivalent string of Unicode codepoints.
+     *
+     * ```js
+     * punycode.decode('maana-pta'); // 'mañana'
+     * punycode.decode('--dqo34k'); // '☃-⌘'
+     * ```
+     * @since v0.5.1
+     */
+    function decode(string: string): string;
+    /**
+     * The `punycode.encode()` method converts a string of Unicode codepoints to a [Punycode](https://tools.ietf.org/html/rfc3492) string of ASCII-only characters.
+     *
+     * ```js
+     * punycode.encode('mañana'); // 'maana-pta'
+     * punycode.encode('☃-⌘'); // '--dqo34k'
+     * ```
+     * @since v0.5.1
+     */
+    function encode(string: string): string;
+    /**
+     * The `punycode.toUnicode()` method converts a string representing a domain name
+     * containing [Punycode](https://tools.ietf.org/html/rfc3492) encoded characters into Unicode. Only the [Punycode](https://tools.ietf.org/html/rfc3492) encoded parts of the domain name are be
+     * converted.
+     *
+     * ```js
+     * // decode domain names
+     * punycode.toUnicode('xn--maana-pta.com'); // 'mañana.com'
+     * punycode.toUnicode('xn----dqo34k.com');  // '☃-⌘.com'
+     * punycode.toUnicode('example.com');       // 'example.com'
+     * ```
+     * @since v0.6.1
+     */
+    function toUnicode(domain: string): string;
+    /**
+     * The `punycode.toASCII()` method converts a Unicode string representing an
+     * Internationalized Domain Name to [Punycode](https://tools.ietf.org/html/rfc3492). Only the non-ASCII parts of the
+     * domain name will be converted. Calling `punycode.toASCII()` on a string that
+     * already only contains ASCII characters will have no effect.
+     *
+     * ```js
+     * // encode domain names
+     * punycode.toASCII('mañana.com');  // 'xn--maana-pta.com'
+     * punycode.toASCII('☃-⌘.com');   // 'xn----dqo34k.com'
+     * punycode.toASCII('example.com'); // 'example.com'
+     * ```
+     * @since v0.6.1
+     */
+    function toASCII(domain: string): string;
+    /**
+     * @deprecated since v7.0.0
+     * The version of the punycode module bundled in Node.js is being deprecated.
+     * In a future major version of Node.js this module will be removed.
+     * Users currently depending on the punycode module should switch to using
+     * the userland-provided Punycode.js module instead.
+     */
+    const ucs2: ucs2;
+    interface ucs2 {
+        /**
+         * @deprecated since v7.0.0
+         * The version of the punycode module bundled in Node.js is being deprecated.
+         * In a future major version of Node.js this module will be removed.
+         * Users currently depending on the punycode module should switch to using
+         * the userland-provided Punycode.js module instead.
+         */
+        decode(string: string): number[];
+        /**
+         * @deprecated since v7.0.0
+         * The version of the punycode module bundled in Node.js is being deprecated.
+         * In a future major version of Node.js this module will be removed.
+         * Users currently depending on the punycode module should switch to using
+         * the userland-provided Punycode.js module instead.
+         */
+        encode(codePoints: ReadonlyArray<number>): string;
+    }
+    /**
+     * @deprecated since v7.0.0
+     * The version of the punycode module bundled in Node.js is being deprecated.
+     * In a future major version of Node.js this module will be removed.
+     * Users currently depending on the punycode module should switch to using
+     * the userland-provided Punycode.js module instead.
+     */
+    const version: string;
+}
+declare module 'node:punycode' {
+    export * from 'punycode';
+}

backend/node_modules/@types/node/querystring.d.ts

@@ -0,0 +1,131 @@
+/**
+ * The `querystring` module provides utilities for parsing and formatting URL
+ * query strings. It can be accessed using:
+ *
+ * ```js
+ * const querystring = require('querystring');
+ * ```
+ *
+ * The `querystring` API is considered Legacy. While it is still maintained,
+ * new code should use the `URLSearchParams` API instead.
+ * @deprecated Legacy
+ * @see [source](https://github.com/nodejs/node/blob/v17.0.0/lib/querystring.js)
+ */
+declare module 'querystring' {
+    interface StringifyOptions {
+        encodeURIComponent?: ((str: string) => string) | undefined;
+    }
+    interface ParseOptions {
+        maxKeys?: number | undefined;
+        decodeURIComponent?: ((str: string) => string) | undefined;
+    }
+    interface ParsedUrlQuery extends NodeJS.Dict<string | string[]> {}
+    interface ParsedUrlQueryInput extends NodeJS.Dict<string | number | boolean | ReadonlyArray<string> | ReadonlyArray<number> | ReadonlyArray<boolean> | null> {}
+    /**
+     * The `querystring.stringify()` method produces a URL query string from a
+     * given `obj` by iterating through the object's "own properties".
+     *
+     * It serializes the following types of values passed in `obj`:[string](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#String_type) |
+     * [number](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Number_type) |
+     * [bigint](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/BigInt) |
+     * [boolean](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Boolean_type) |
+     * [string\[\]](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#String_type) |
+     * [number\[\]](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Number_type) |
+     * [bigint\[\]](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/BigInt) |
+     * [boolean\[\]](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Boolean_type) The numeric values must be finite. Any other input values will be coerced to
+     * empty strings.
+     *
+     * ```js
+     * querystring.stringify({ foo: 'bar', baz: ['qux', 'quux'], corge: '' });
+     * // Returns 'foo=bar&#x26;baz=qux&#x26;baz=quux&#x26;corge='
+     *
+     * querystring.stringify({ foo: 'bar', baz: 'qux' }, ';', ':');
+     * // Returns 'foo:bar;baz:qux'
+     * ```
+     *
+     * By default, characters requiring percent-encoding within the query string will
+     * be encoded as UTF-8\. If an alternative encoding is required, then an alternative`encodeURIComponent` option will need to be specified:
+     *
+     * ```js
+     * // Assuming gbkEncodeURIComponent function already exists,
+     *
+     * querystring.stringify({ w: '中文', foo: 'bar' }, null, null,
+     *                       { encodeURIComponent: gbkEncodeURIComponent });
+     * ```
+     * @since v0.1.25
+     * @param obj The object to serialize into a URL query string
+     * @param [sep='&'] The substring used to delimit key and value pairs in the query string.
+     * @param [eq='='] . The substring used to delimit keys and values in the query string.
+     */
+    function stringify(obj?: ParsedUrlQueryInput, sep?: string, eq?: string, options?: StringifyOptions): string;
+    /**
+     * The `querystring.parse()` method parses a URL query string (`str`) into a
+     * collection of key and value pairs.
+     *
+     * For example, the query string `'foo=bar&#x26;abc=xyz&#x26;abc=123'` is parsed into:
+     *
+     * ```js
+     * {
+     *   foo: 'bar',
+     *   abc: ['xyz', '123']
+     * }
+     * ```
+     *
+     * The object returned by the `querystring.parse()` method _does not_prototypically inherit from the JavaScript `Object`. This means that typical`Object` methods such as `obj.toString()`,
+     * `obj.hasOwnProperty()`, and others
+     * are not defined and _will not work_.
+     *
+     * By default, percent-encoded characters within the query string will be assumed
+     * to use UTF-8 encoding. If an alternative character encoding is used, then an
+     * alternative `decodeURIComponent` option will need to be specified:
+     *
+     * ```js
+     * // Assuming gbkDecodeURIComponent function already exists...
+     *
+     * querystring.parse('w=%D6%D0%CE%C4&#x26;foo=bar', null, null,
+     *                   { decodeURIComponent: gbkDecodeURIComponent });
+     * ```
+     * @since v0.1.25
+     * @param str The URL query string to parse
+     * @param [sep='&'] The substring used to delimit key and value pairs in the query string.
+     * @param [eq='='] . The substring used to delimit keys and values in the query string.
+     */
+    function parse(str: string, sep?: string, eq?: string, options?: ParseOptions): ParsedUrlQuery;
+    /**
+     * The querystring.encode() function is an alias for querystring.stringify().
+     */
+    const encode: typeof stringify;
+    /**
+     * The querystring.decode() function is an alias for querystring.parse().
+     */
+    const decode: typeof parse;
+    /**
+     * The `querystring.escape()` method performs URL percent-encoding on the given`str` in a manner that is optimized for the specific requirements of URL
+     * query strings.
+     *
+     * The `querystring.escape()` method is used by `querystring.stringify()` and is
+     * generally not expected to be used directly. It is exported primarily to allow
+     * application code to provide a replacement percent-encoding implementation if
+     * necessary by assigning `querystring.escape` to an alternative function.
+     * @since v0.1.25
+     */
+    function escape(str: string): string;
+    /**
+     * The `querystring.unescape()` method performs decoding of URL percent-encoded
+     * characters on the given `str`.
+     *
+     * The `querystring.unescape()` method is used by `querystring.parse()` and is
+     * generally not expected to be used directly. It is exported primarily to allow
+     * application code to provide a replacement decoding implementation if
+     * necessary by assigning `querystring.unescape` to an alternative function.
+     *
+     * By default, the `querystring.unescape()` method will attempt to use the
+     * JavaScript built-in `decodeURIComponent()` method to decode. If that fails,
+     * a safer equivalent that does not throw on malformed URLs will be used.
+     * @since v0.1.25
+     */
+    function unescape(str: string): string;
+}
+declare module 'node:querystring' {
+    export * from 'querystring';
+}

backend/node_modules/@types/node/readline.d.ts

@@ -0,0 +1,650 @@
+/**
+ * The `readline` module provides an interface for reading data from a `Readable` stream (such as `process.stdin`) one line at a time.
+ *
+ * To use the promise-based APIs:
+ *
+ * ```js
+ * import * as readline from 'node:readline/promises';
+ * ```
+ *
+ * To use the callback and sync APIs:
+ *
+ * ```js
+ * import * as readline from 'node:readline';
+ * ```
+ *
+ * The following simple example illustrates the basic use of the `readline` module.
+ *
+ * ```js
+ * import * as readline from 'node:readline/promises';
+ * import { stdin as input, stdout as output } from 'process';
+ *
+ * const rl = readline.createInterface({ input, output });
+ *
+ * const answer = await rl.question('What do you think of Node.js? ');
+ *
+ * console.log(`Thank you for your valuable feedback: ${answer}`);
+ *
+ * rl.close();
+ * ```
+ *
+ * Once this code is invoked, the Node.js application will not terminate until the`readline.Interface` is closed because the interface waits for data to be
+ * received on the `input` stream.
+ * @see [source](https://github.com/nodejs/node/blob/v17.0.0/lib/readline.js)
+ */
+declare module 'readline' {
+    import { Abortable, EventEmitter } from 'node:events';
+    interface Key {
+        sequence?: string | undefined;
+        name?: string | undefined;
+        ctrl?: boolean | undefined;
+        meta?: boolean | undefined;
+        shift?: boolean | undefined;
+    }
+    /**
+     * Instances of the `readline.Interface` class are constructed using the`readline.createInterface()` method. Every instance is associated with a
+     * single `input` `Readable` stream and a single `output` `Writable` stream.
+     * The `output` stream is used to print prompts for user input that arrives on,
+     * and is read from, the `input` stream.
+     * @since v0.1.104
+     */
+    class Interface extends EventEmitter {
+        readonly terminal: boolean;
+        /**
+         * The current input data being processed by node.
+         *
+         * This can be used when collecting input from a TTY stream to retrieve the
+         * current value that has been processed thus far, prior to the `line` event
+         * being emitted. Once the `line` event has been emitted, this property will
+         * be an empty string.
+         *
+         * Be aware that modifying the value during the instance runtime may have
+         * unintended consequences if `rl.cursor` is not also controlled.
+         *
+         * **If not using a TTY stream for input, use the `'line'` event.**
+         *
+         * One possible use case would be as follows:
+         *
+         * ```js
+         * const values = ['lorem ipsum', 'dolor sit amet'];
+         * const rl = readline.createInterface(process.stdin);
+         * const showResults = debounce(() => {
+         *   console.log(
+         *     '\n',
+         *     values.filter((val) => val.startsWith(rl.line)).join(' ')
+         *   );
+         * }, 300);
+         * process.stdin.on('keypress', (c, k) => {
+         *   showResults();
+         * });
+         * ```
+         * @since v0.1.98
+         */
+        readonly line: string;
+        /**
+         * The cursor position relative to `rl.line`.
+         *
+         * This will track where the current cursor lands in the input string, when
+         * reading input from a TTY stream. The position of cursor determines the
+         * portion of the input string that will be modified as input is processed,
+         * as well as the column where the terminal caret will be rendered.
+         * @since v0.1.98
+         */
+        readonly cursor: number;
+        /**
+         * NOTE: According to the documentation:
+         *
+         * > Instances of the `readline.Interface` class are constructed using the
+         * > `readline.createInterface()` method.
+         *
+         * @see https://nodejs.org/dist/latest-v10.x/docs/api/readline.html#readline_class_interface
+         */
+        protected constructor(input: NodeJS.ReadableStream, output?: NodeJS.WritableStream, completer?: Completer | AsyncCompleter, terminal?: boolean);
+        /**
+         * NOTE: According to the documentation:
+         *
+         * > Instances of the `readline.Interface` class are constructed using the
+         * > `readline.createInterface()` method.
+         *
+         * @see https://nodejs.org/dist/latest-v10.x/docs/api/readline.html#readline_class_interface
+         */
+        protected constructor(options: ReadLineOptions);
+        /**
+         * The `rl.getPrompt()` method returns the current prompt used by `rl.prompt()`.
+         * @since v15.3.0
+         * @return the current prompt string
+         */
+        getPrompt(): string;
+        /**
+         * The `rl.setPrompt()` method sets the prompt that will be written to `output`whenever `rl.prompt()` is called.
+         * @since v0.1.98
+         */
+        setPrompt(prompt: string): void;
+        /**
+         * The `rl.prompt()` method writes the `readline.Interface` instances configured`prompt` to a new line in `output` in order to provide a user with a new
+         * location at which to provide input.
+         *
+         * When called, `rl.prompt()` will resume the `input` stream if it has been
+         * paused.
+         *
+         * If the `readline.Interface` was created with `output` set to `null` or`undefined` the prompt is not written.
+         * @since v0.1.98
+         * @param preserveCursor If `true`, prevents the cursor placement from being reset to `0`.
+         */
+        prompt(preserveCursor?: boolean): void;
+        /**
+         * The `rl.question()` method displays the `query` by writing it to the `output`,
+         * waits for user input to be provided on `input`, then invokes the `callback`function passing the provided input as the first argument.
+         *
+         * When called, `rl.question()` will resume the `input` stream if it has been
+         * paused.
+         *
+         * If the `readline.Interface` was created with `output` set to `null` or`undefined` the `query` is not written.
+         *
+         * The `callback` function passed to `rl.question()` does not follow the typical
+         * pattern of accepting an `Error` object or `null` as the first argument.
+         * The `callback` is called with the provided answer as the only argument.
+         *
+         * Example usage:
+         *
+         * ```js
+         * rl.question('What is your favorite food? ', (answer) => {
+         *   console.log(`Oh, so your favorite food is ${answer}`);
+         * });
+         * ```
+         *
+         * Using an `AbortController` to cancel a question.
+         *
+         * ```js
+         * const ac = new AbortController();
+         * const signal = ac.signal;
+         *
+         * rl.question('What is your favorite food? ', { signal }, (answer) => {
+         *   console.log(`Oh, so your favorite food is ${answer}`);
+         * });
+         *
+         * signal.addEventListener('abort', () => {
+         *   console.log('The food question timed out');
+         * }, { once: true });
+         *
+         * setTimeout(() => ac.abort(), 10000);
+         * ```
+         *
+         * If this method is invoked as it's util.promisify()ed version, it returns a
+         * Promise that fulfills with the answer. If the question is canceled using
+         * an `AbortController` it will reject with an `AbortError`.
+         *
+         * ```js
+         * const util = require('util');
+         * const question = util.promisify(rl.question).bind(rl);
+         *
+         * async function questionExample() {
+         *   try {
+         *     const answer = await question('What is you favorite food? ');
+         *     console.log(`Oh, so your favorite food is ${answer}`);
+         *   } catch (err) {
+         *     console.error('Question rejected', err);
+         *   }
+         * }
+         * questionExample();
+         * ```
+         * @since v0.3.3
+         * @param query A statement or query to write to `output`, prepended to the prompt.
+         * @param callback A callback function that is invoked with the user's input in response to the `query`.
+         */
+        question(query: string, callback: (answer: string) => void): void;
+        question(query: string, options: Abortable, callback: (answer: string) => void): void;
+        /**
+         * The `rl.pause()` method pauses the `input` stream, allowing it to be resumed
+         * later if necessary.
+         *
+         * Calling `rl.pause()` does not immediately pause other events (including`'line'`) from being emitted by the `readline.Interface` instance.
+         * @since v0.3.4
+         */
+        pause(): this;
+        /**
+         * The `rl.resume()` method resumes the `input` stream if it has been paused.
+         * @since v0.3.4
+         */
+        resume(): this;
+        /**
+         * The `rl.close()` method closes the `readline.Interface` instance and
+         * relinquishes control over the `input` and `output` streams. When called,
+         * the `'close'` event will be emitted.
+         *
+         * Calling `rl.close()` does not immediately stop other events (including `'line'`)
+         * from being emitted by the `readline.Interface` instance.
+         * @since v0.1.98
+         */
+        close(): void;
+        /**
+         * The `rl.write()` method will write either `data` or a key sequence identified
+         * by `key` to the `output`. The `key` argument is supported only if `output` is
+         * a `TTY` text terminal. See `TTY keybindings` for a list of key
+         * combinations.
+         *
+         * If `key` is specified, `data` is ignored.
+         *
+         * When called, `rl.write()` will resume the `input` stream if it has been
+         * paused.
+         *
+         * If the `readline.Interface` was created with `output` set to `null` or`undefined` the `data` and `key` are not written.
+         *
+         * ```js
+         * rl.write('Delete this!');
+         * // Simulate Ctrl+U to delete the line written previously
+         * rl.write(null, { ctrl: true, name: 'u' });
+         * ```
+         *
+         * The `rl.write()` method will write the data to the `readline` `Interface`'s`input`_as if it were provided by the user_.
+         * @since v0.1.98
+         */
+        write(data: string | Buffer, key?: Key): void;
+        write(data: undefined | null | string | Buffer, key: Key): void;
+        /**
+         * Returns the real position of the cursor in relation to the input
+         * prompt + string. Long input (wrapping) strings, as well as multiple
+         * line prompts are included in the calculations.
+         * @since v13.5.0, v12.16.0
+         */
+        getCursorPos(): CursorPos;
+        /**
+         * events.EventEmitter
+         * 1. close
+         * 2. line
+         * 3. pause
+         * 4. resume
+         * 5. SIGCONT
+         * 6. SIGINT
+         * 7. SIGTSTP
+         * 8. history
+         */
+        addListener(event: string, listener: (...args: any[]) => void): this;
+        addListener(event: 'close', listener: () => void): this;
+        addListener(event: 'line', listener: (input: string) => void): this;
+        addListener(event: 'pause', listener: () => void): this;
+        addListener(event: 'resume', listener: () => void): this;
+        addListener(event: 'SIGCONT', listener: () => void): this;
+        addListener(event: 'SIGINT', listener: () => void): this;
+        addListener(event: 'SIGTSTP', listener: () => void): this;
+        addListener(event: 'history', listener: (history: string[]) => void): this;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        emit(event: 'close'): boolean;
+        emit(event: 'line', input: string): boolean;
+        emit(event: 'pause'): boolean;
+        emit(event: 'resume'): boolean;
+        emit(event: 'SIGCONT'): boolean;
+        emit(event: 'SIGINT'): boolean;
+        emit(event: 'SIGTSTP'): boolean;
+        emit(event: 'history', history: string[]): boolean;
+        on(event: string, listener: (...args: any[]) => void): this;
+        on(event: 'close', listener: () => void): this;
+        on(event: 'line', listener: (input: string) => void): this;
+        on(event: 'pause', listener: () => void): this;
+        on(event: 'resume', listener: () => void): this;
+        on(event: 'SIGCONT', listener: () => void): this;
+        on(event: 'SIGINT', listener: () => void): this;
+        on(event: 'SIGTSTP', listener: () => void): this;
+        on(event: 'history', listener: (history: string[]) => void): this;
+        once(event: string, listener: (...args: any[]) => void): this;
+        once(event: 'close', listener: () => void): this;
+        once(event: 'line', listener: (input: string) => void): this;
+        once(event: 'pause', listener: () => void): this;
+        once(event: 'resume', listener: () => void): this;
+        once(event: 'SIGCONT', listener: () => void): this;
+        once(event: 'SIGINT', listener: () => void): this;
+        once(event: 'SIGTSTP', listener: () => void): this;
+        once(event: 'history', listener: (history: string[]) => void): this;
+        prependListener(event: string, listener: (...args: any[]) => void): this;
+        prependListener(event: 'close', listener: () => void): this;
+        prependListener(event: 'line', listener: (input: string) => void): this;
+        prependListener(event: 'pause', listener: () => void): this;
+        prependListener(event: 'resume', listener: () => void): this;
+        prependListener(event: 'SIGCONT', listener: () => void): this;
+        prependListener(event: 'SIGINT', listener: () => void): this;
+        prependListener(event: 'SIGTSTP', listener: () => void): this;
+        prependListener(event: 'history', listener: (history: string[]) => void): this;
+        prependOnceListener(event: string, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'close', listener: () => void): this;
+        prependOnceListener(event: 'line', listener: (input: string) => void): this;
+        prependOnceListener(event: 'pause', listener: () => void): this;
+        prependOnceListener(event: 'resume', listener: () => void): this;
+        prependOnceListener(event: 'SIGCONT', listener: () => void): this;
+        prependOnceListener(event: 'SIGINT', listener: () => void): this;
+        prependOnceListener(event: 'SIGTSTP', listener: () => void): this;
+        prependOnceListener(event: 'history', listener: (history: string[]) => void): this;
+        [Symbol.asyncIterator](): AsyncIterableIterator<string>;
+    }
+    type ReadLine = Interface; // type forwarded for backwards compatibility
+    type Completer = (line: string) => CompleterResult;
+    type AsyncCompleter = (line: string, callback: (err?: null | Error, result?: CompleterResult) => void) => void;
+    type CompleterResult = [string[], string];
+    interface ReadLineOptions {
+        input: NodeJS.ReadableStream;
+        output?: NodeJS.WritableStream | undefined;
+        completer?: Completer | AsyncCompleter | undefined;
+        terminal?: boolean | undefined;
+        /**
+         *  Initial list of history lines. This option makes sense
+         * only if `terminal` is set to `true` by the user or by an internal `output`
+         * check, otherwise the history caching mechanism is not initialized at all.
+         * @default []
+         */
+        history?: string[] | undefined;
+        historySize?: number | undefined;
+        prompt?: string | undefined;
+        crlfDelay?: number | undefined;
+        /**
+         * If `true`, when a new input line added
+         * to the history list duplicates an older one, this removes the older line
+         * from the list.
+         * @default false
+         */
+        removeHistoryDuplicates?: boolean | undefined;
+        escapeCodeTimeout?: number | undefined;
+        tabSize?: number | undefined;
+    }
+    /**
+     * The `readline.createInterface()` method creates a new `readline.Interface`instance.
+     *
+     * ```js
+     * const readline = require('readline');
+     * const rl = readline.createInterface({
+     *   input: process.stdin,
+     *   output: process.stdout
+     * });
+     * ```
+     *
+     * Once the `readline.Interface` instance is created, the most common case is to
+     * listen for the `'line'` event:
+     *
+     * ```js
+     * rl.on('line', (line) => {
+     *   console.log(`Received: ${line}`);
+     * });
+     * ```
+     *
+     * If `terminal` is `true` for this instance then the `output` stream will get
+     * the best compatibility if it defines an `output.columns` property and emits
+     * a `'resize'` event on the `output` if or when the columns ever change
+     * (`process.stdout` does this automatically when it is a TTY).
+     *
+     * When creating a `readline.Interface` using `stdin` as input, the program
+     * will not terminate until it receives `EOF` (Ctrl+D on
+     * Linux/macOS, Ctrl+Z followed by Return on
+     * Windows).
+     * If you want your application to exit without waiting for user input, you can `unref()` the standard input stream:
+     *
+     * ```js
+     * process.stdin.unref();
+     * ```
+     * @since v0.1.98
+     */
+    function createInterface(input: NodeJS.ReadableStream, output?: NodeJS.WritableStream, completer?: Completer | AsyncCompleter, terminal?: boolean): Interface;
+    function createInterface(options: ReadLineOptions): Interface;
+    /**
+     * The `readline.emitKeypressEvents()` method causes the given `Readable` stream to begin emitting `'keypress'` events corresponding to received input.
+     *
+     * Optionally, `interface` specifies a `readline.Interface` instance for which
+     * autocompletion is disabled when copy-pasted input is detected.
+     *
+     * If the `stream` is a `TTY`, then it must be in raw mode.
+     *
+     * This is automatically called by any readline instance on its `input` if the`input` is a terminal. Closing the `readline` instance does not stop
+     * the `input` from emitting `'keypress'` events.
+     *
+     * ```js
+     * readline.emitKeypressEvents(process.stdin);
+     * if (process.stdin.isTTY)
+     *   process.stdin.setRawMode(true);
+     * ```
+     *
+     * ## Example: Tiny CLI
+     *
+     * The following example illustrates the use of `readline.Interface` class to
+     * implement a small command-line interface:
+     *
+     * ```js
+     * const readline = require('readline');
+     * const rl = readline.createInterface({
+     *   input: process.stdin,
+     *   output: process.stdout,
+     *   prompt: 'OHAI> '
+     * });
+     *
+     * rl.prompt();
+     *
+     * rl.on('line', (line) => {
+     *   switch (line.trim()) {
+     *     case 'hello':
+     *       console.log('world!');
+     *       break;
+     *     default:
+     *       console.log(`Say what? I might have heard '${line.trim()}'`);
+     *       break;
+     *   }
+     *   rl.prompt();
+     * }).on('close', () => {
+     *   console.log('Have a great day!');
+     *   process.exit(0);
+     * });
+     * ```
+     *
+     * ## Example: Read file stream line-by-Line
+     *
+     * A common use case for `readline` is to consume an input file one line at a
+     * time. The easiest way to do so is leveraging the `fs.ReadStream` API as
+     * well as a `for await...of` loop:
+     *
+     * ```js
+     * const fs = require('fs');
+     * const readline = require('readline');
+     *
+     * async function processLineByLine() {
+     *   const fileStream = fs.createReadStream('input.txt');
+     *
+     *   const rl = readline.createInterface({
+     *     input: fileStream,
+     *     crlfDelay: Infinity
+     *   });
+     *   // Note: we use the crlfDelay option to recognize all instances of CR LF
+     *   // ('\r\n') in input.txt as a single line break.
+     *
+     *   for await (const line of rl) {
+     *     // Each line in input.txt will be successively available here as `line`.
+     *     console.log(`Line from file: ${line}`);
+     *   }
+     * }
+     *
+     * processLineByLine();
+     * ```
+     *
+     * Alternatively, one could use the `'line'` event:
+     *
+     * ```js
+     * const fs = require('fs');
+     * const readline = require('readline');
+     *
+     * const rl = readline.createInterface({
+     *   input: fs.createReadStream('sample.txt'),
+     *   crlfDelay: Infinity
+     * });
+     *
+     * rl.on('line', (line) => {
+     *   console.log(`Line from file: ${line}`);
+     * });
+     * ```
+     *
+     * Currently, `for await...of` loop can be a bit slower. If `async` / `await`flow and speed are both essential, a mixed approach can be applied:
+     *
+     * ```js
+     * const { once } = require('events');
+     * const { createReadStream } = require('fs');
+     * const { createInterface } = require('readline');
+     *
+     * (async function processLineByLine() {
+     *   try {
+     *     const rl = createInterface({
+     *       input: createReadStream('big-file.txt'),
+     *       crlfDelay: Infinity
+     *     });
+     *
+     *     rl.on('line', (line) => {
+     *       // Process the line.
+     *     });
+     *
+     *     await once(rl, 'close');
+     *
+     *     console.log('File processed.');
+     *   } catch (err) {
+     *     console.error(err);
+     *   }
+     * })();
+     * ```
+     * @since v0.7.7
+     */
+    function emitKeypressEvents(stream: NodeJS.ReadableStream, readlineInterface?: Interface): void;
+    type Direction = -1 | 0 | 1;
+    interface CursorPos {
+        rows: number;
+        cols: number;
+    }
+    /**
+     * The `readline.clearLine()` method clears current line of given `TTY` stream
+     * in a specified direction identified by `dir`.
+     * @since v0.7.7
+     * @param callback Invoked once the operation completes.
+     * @return `false` if `stream` wishes for the calling code to wait for the `'drain'` event to be emitted before continuing to write additional data; otherwise `true`.
+     */
+    function clearLine(stream: NodeJS.WritableStream, dir: Direction, callback?: () => void): boolean;
+    /**
+     * The `readline.clearScreenDown()` method clears the given `TTY` stream from
+     * the current position of the cursor down.
+     * @since v0.7.7
+     * @param callback Invoked once the operation completes.
+     * @return `false` if `stream` wishes for the calling code to wait for the `'drain'` event to be emitted before continuing to write additional data; otherwise `true`.
+     */
+    function clearScreenDown(stream: NodeJS.WritableStream, callback?: () => void): boolean;
+    /**
+     * The `readline.cursorTo()` method moves cursor to the specified position in a
+     * given `TTY` `stream`.
+     * @since v0.7.7
+     * @param callback Invoked once the operation completes.
+     * @return `false` if `stream` wishes for the calling code to wait for the `'drain'` event to be emitted before continuing to write additional data; otherwise `true`.
+     */
+    function cursorTo(stream: NodeJS.WritableStream, x: number, y?: number, callback?: () => void): boolean;
+    /**
+     * The `readline.moveCursor()` method moves the cursor _relative_ to its current
+     * position in a given `TTY` `stream`.
+     *
+     * ## Example: Tiny CLI
+     *
+     * The following example illustrates the use of `readline.Interface` class to
+     * implement a small command-line interface:
+     *
+     * ```js
+     * const readline = require('readline');
+     * const rl = readline.createInterface({
+     *   input: process.stdin,
+     *   output: process.stdout,
+     *   prompt: 'OHAI> '
+     * });
+     *
+     * rl.prompt();
+     *
+     * rl.on('line', (line) => {
+     *   switch (line.trim()) {
+     *     case 'hello':
+     *       console.log('world!');
+     *       break;
+     *     default:
+     *       console.log(`Say what? I might have heard '${line.trim()}'`);
+     *       break;
+     *   }
+     *   rl.prompt();
+     * }).on('close', () => {
+     *   console.log('Have a great day!');
+     *   process.exit(0);
+     * });
+     * ```
+     *
+     * ## Example: Read file stream line-by-Line
+     *
+     * A common use case for `readline` is to consume an input file one line at a
+     * time. The easiest way to do so is leveraging the `fs.ReadStream` API as
+     * well as a `for await...of` loop:
+     *
+     * ```js
+     * const fs = require('fs');
+     * const readline = require('readline');
+     *
+     * async function processLineByLine() {
+     *   const fileStream = fs.createReadStream('input.txt');
+     *
+     *   const rl = readline.createInterface({
+     *     input: fileStream,
+     *     crlfDelay: Infinity
+     *   });
+     *   // Note: we use the crlfDelay option to recognize all instances of CR LF
+     *   // ('\r\n') in input.txt as a single line break.
+     *
+     *   for await (const line of rl) {
+     *     // Each line in input.txt will be successively available here as `line`.
+     *     console.log(`Line from file: ${line}`);
+     *   }
+     * }
+     *
+     * processLineByLine();
+     * ```
+     *
+     * Alternatively, one could use the `'line'` event:
+     *
+     * ```js
+     * const fs = require('fs');
+     * const readline = require('readline');
+     *
+     * const rl = readline.createInterface({
+     *   input: fs.createReadStream('sample.txt'),
+     *   crlfDelay: Infinity
+     * });
+     *
+     * rl.on('line', (line) => {
+     *   console.log(`Line from file: ${line}`);
+     * });
+     * ```
+     *
+     * Currently, `for await...of` loop can be a bit slower. If `async` / `await`flow and speed are both essential, a mixed approach can be applied:
+     *
+     * ```js
+     * const { once } = require('events');
+     * const { createReadStream } = require('fs');
+     * const { createInterface } = require('readline');
+     *
+     * (async function processLineByLine() {
+     *   try {
+     *     const rl = createInterface({
+     *       input: createReadStream('big-file.txt'),
+     *       crlfDelay: Infinity
+     *     });
+     *
+     *     rl.on('line', (line) => {
+     *       // Process the line.
+     *     });
+     *
+     *     await once(rl, 'close');
+     *
+     *     console.log('File processed.');
+     *   } catch (err) {
+     *     console.error(err);
+     *   }
+     * })();
+     * ```
+     * @since v0.7.7
+     * @param callback Invoked once the operation completes.
+     * @return `false` if `stream` wishes for the calling code to wait for the `'drain'` event to be emitted before continuing to write additional data; otherwise `true`.
+     */
+    function moveCursor(stream: NodeJS.WritableStream, dx: number, dy: number, callback?: () => void): boolean;
+}
+declare module 'node:readline' {
+    export * from 'readline';
+}

backend/node_modules/@types/node/repl.d.ts

@@ -0,0 +1,424 @@
+/**
+ * The `repl` module provides a Read-Eval-Print-Loop (REPL) implementation that
+ * is available both as a standalone program or includible in other applications.
+ * It can be accessed using:
+ *
+ * ```js
+ * const repl = require('repl');
+ * ```
+ * @see [source](https://github.com/nodejs/node/blob/v17.0.0/lib/repl.js)
+ */
+declare module 'repl' {
+    import { Interface, Completer, AsyncCompleter } from 'node:readline';
+    import { Context } from 'node:vm';
+    import { InspectOptions } from 'node:util';
+    interface ReplOptions {
+        /**
+         * The input prompt to display.
+         * @default "> "
+         */
+        prompt?: string | undefined;
+        /**
+         * The `Readable` stream from which REPL input will be read.
+         * @default process.stdin
+         */
+        input?: NodeJS.ReadableStream | undefined;
+        /**
+         * The `Writable` stream to which REPL output will be written.
+         * @default process.stdout
+         */
+        output?: NodeJS.WritableStream | undefined;
+        /**
+         * If `true`, specifies that the output should be treated as a TTY terminal, and have
+         * ANSI/VT100 escape codes written to it.
+         * Default: checking the value of the `isTTY` property on the output stream upon
+         * instantiation.
+         */
+        terminal?: boolean | undefined;
+        /**
+         * The function to be used when evaluating each given line of input.
+         * Default: an async wrapper for the JavaScript `eval()` function. An `eval` function can
+         * error with `repl.Recoverable` to indicate the input was incomplete and prompt for
+         * additional lines.
+         *
+         * @see https://nodejs.org/dist/latest-v10.x/docs/api/repl.html#repl_default_evaluation
+         * @see https://nodejs.org/dist/latest-v10.x/docs/api/repl.html#repl_custom_evaluation_functions
+         */
+        eval?: REPLEval | undefined;
+        /**
+         * Defines if the repl prints output previews or not.
+         * @default `true` Always `false` in case `terminal` is falsy.
+         */
+        preview?: boolean | undefined;
+        /**
+         * If `true`, specifies that the default `writer` function should include ANSI color
+         * styling to REPL output. If a custom `writer` function is provided then this has no
+         * effect.
+         * Default: the REPL instance's `terminal` value.
+         */
+        useColors?: boolean | undefined;
+        /**
+         * If `true`, specifies that the default evaluation function will use the JavaScript
+         * `global` as the context as opposed to creating a new separate context for the REPL
+         * instance. The node CLI REPL sets this value to `true`.
+         * Default: `false`.
+         */
+        useGlobal?: boolean | undefined;
+        /**
+         * If `true`, specifies that the default writer will not output the return value of a
+         * command if it evaluates to `undefined`.
+         * Default: `false`.
+         */
+        ignoreUndefined?: boolean | undefined;
+        /**
+         * The function to invoke to format the output of each command before writing to `output`.
+         * Default: a wrapper for `util.inspect`.
+         *
+         * @see https://nodejs.org/dist/latest-v10.x/docs/api/repl.html#repl_customizing_repl_output
+         */
+        writer?: REPLWriter | undefined;
+        /**
+         * An optional function used for custom Tab auto completion.
+         *
+         * @see https://nodejs.org/dist/latest-v11.x/docs/api/readline.html#readline_use_of_the_completer_function
+         */
+        completer?: Completer | AsyncCompleter | undefined;
+        /**
+         * A flag that specifies whether the default evaluator executes all JavaScript commands in
+         * strict mode or default (sloppy) mode.
+         * Accepted values are:
+         * - `repl.REPL_MODE_SLOPPY` - evaluates expressions in sloppy mode.
+         * - `repl.REPL_MODE_STRICT` - evaluates expressions in strict mode. This is equivalent to
+         *   prefacing every repl statement with `'use strict'`.
+         */
+        replMode?: typeof REPL_MODE_SLOPPY | typeof REPL_MODE_STRICT | undefined;
+        /**
+         * Stop evaluating the current piece of code when `SIGINT` is received, i.e. `Ctrl+C` is
+         * pressed. This cannot be used together with a custom `eval` function.
+         * Default: `false`.
+         */
+        breakEvalOnSigint?: boolean | undefined;
+    }
+    type REPLEval = (this: REPLServer, evalCmd: string, context: Context, file: string, cb: (err: Error | null, result: any) => void) => void;
+    type REPLWriter = (this: REPLServer, obj: any) => string;
+    /**
+     * This is the default "writer" value, if none is passed in the REPL options,
+     * and it can be overridden by custom print functions.
+     */
+    const writer: REPLWriter & {
+        options: InspectOptions;
+    };
+    type REPLCommandAction = (this: REPLServer, text: string) => void;
+    interface REPLCommand {
+        /**
+         * Help text to be displayed when `.help` is entered.
+         */
+        help?: string | undefined;
+        /**
+         * The function to execute, optionally accepting a single string argument.
+         */
+        action: REPLCommandAction;
+    }
+    /**
+     * Instances of `repl.REPLServer` are created using the {@link start} method
+     * or directly using the JavaScript `new` keyword.
+     *
+     * ```js
+     * const repl = require('repl');
+     *
+     * const options = { useColors: true };
+     *
+     * const firstInstance = repl.start(options);
+     * const secondInstance = new repl.REPLServer(options);
+     * ```
+     * @since v0.1.91
+     */
+    class REPLServer extends Interface {
+        /**
+         * The `vm.Context` provided to the `eval` function to be used for JavaScript
+         * evaluation.
+         */
+        readonly context: Context;
+        /**
+         * @deprecated since v14.3.0 - Use `input` instead.
+         */
+        readonly inputStream: NodeJS.ReadableStream;
+        /**
+         * @deprecated since v14.3.0 - Use `output` instead.
+         */
+        readonly outputStream: NodeJS.WritableStream;
+        /**
+         * The `Readable` stream from which REPL input will be read.
+         */
+        readonly input: NodeJS.ReadableStream;
+        /**
+         * The `Writable` stream to which REPL output will be written.
+         */
+        readonly output: NodeJS.WritableStream;
+        /**
+         * The commands registered via `replServer.defineCommand()`.
+         */
+        readonly commands: NodeJS.ReadOnlyDict<REPLCommand>;
+        /**
+         * A value indicating whether the REPL is currently in "editor mode".
+         *
+         * @see https://nodejs.org/dist/latest-v10.x/docs/api/repl.html#repl_commands_and_special_keys
+         */
+        readonly editorMode: boolean;
+        /**
+         * A value indicating whether the `_` variable has been assigned.
+         *
+         * @see https://nodejs.org/dist/latest-v10.x/docs/api/repl.html#repl_assignment_of_the_underscore_variable
+         */
+        readonly underscoreAssigned: boolean;
+        /**
+         * The last evaluation result from the REPL (assigned to the `_` variable inside of the REPL).
+         *
+         * @see https://nodejs.org/dist/latest-v10.x/docs/api/repl.html#repl_assignment_of_the_underscore_variable
+         */
+        readonly last: any;
+        /**
+         * A value indicating whether the `_error` variable has been assigned.
+         *
+         * @since v9.8.0
+         * @see https://nodejs.org/dist/latest-v10.x/docs/api/repl.html#repl_assignment_of_the_underscore_variable
+         */
+        readonly underscoreErrAssigned: boolean;
+        /**
+         * The last error raised inside the REPL (assigned to the `_error` variable inside of the REPL).
+         *
+         * @since v9.8.0
+         * @see https://nodejs.org/dist/latest-v10.x/docs/api/repl.html#repl_assignment_of_the_underscore_variable
+         */
+        readonly lastError: any;
+        /**
+         * Specified in the REPL options, this is the function to be used when evaluating each
+         * given line of input. If not specified in the REPL options, this is an async wrapper
+         * for the JavaScript `eval()` function.
+         */
+        readonly eval: REPLEval;
+        /**
+         * Specified in the REPL options, this is a value indicating whether the default
+         * `writer` function should include ANSI color styling to REPL output.
+         */
+        readonly useColors: boolean;
+        /**
+         * Specified in the REPL options, this is a value indicating whether the default `eval`
+         * function will use the JavaScript `global` as the context as opposed to creating a new
+         * separate context for the REPL instance.
+         */
+        readonly useGlobal: boolean;
+        /**
+         * Specified in the REPL options, this is a value indicating whether the default `writer`
+         * function should output the result of a command if it evaluates to `undefined`.
+         */
+        readonly ignoreUndefined: boolean;
+        /**
+         * Specified in the REPL options, this is the function to invoke to format the output of
+         * each command before writing to `outputStream`. If not specified in the REPL options,
+         * this will be a wrapper for `util.inspect`.
+         */
+        readonly writer: REPLWriter;
+        /**
+         * Specified in the REPL options, this is the function to use for custom Tab auto-completion.
+         */
+        readonly completer: Completer | AsyncCompleter;
+        /**
+         * Specified in the REPL options, this is a flag that specifies whether the default `eval`
+         * function should execute all JavaScript commands in strict mode or default (sloppy) mode.
+         * Possible values are:
+         * - `repl.REPL_MODE_SLOPPY` - evaluates expressions in sloppy mode.
+         * - `repl.REPL_MODE_STRICT` - evaluates expressions in strict mode. This is equivalent to
+         *    prefacing every repl statement with `'use strict'`.
+         */
+        readonly replMode: typeof REPL_MODE_SLOPPY | typeof REPL_MODE_STRICT;
+        /**
+         * NOTE: According to the documentation:
+         *
+         * > Instances of `repl.REPLServer` are created using the `repl.start()` method and
+         * > _should not_ be created directly using the JavaScript `new` keyword.
+         *
+         * `REPLServer` cannot be subclassed due to implementation specifics in NodeJS.
+         *
+         * @see https://nodejs.org/dist/latest-v10.x/docs/api/repl.html#repl_class_replserver
+         */
+        private constructor();
+        /**
+         * The `replServer.defineCommand()` method is used to add new `.`\-prefixed commands
+         * to the REPL instance. Such commands are invoked by typing a `.` followed by the`keyword`. The `cmd` is either a `Function` or an `Object` with the following
+         * properties:
+         *
+         * The following example shows two new commands added to the REPL instance:
+         *
+         * ```js
+         * const repl = require('repl');
+         *
+         * const replServer = repl.start({ prompt: '> ' });
+         * replServer.defineCommand('sayhello', {
+         *   help: 'Say hello',
+         *   action(name) {
+         *     this.clearBufferedCommand();
+         *     console.log(`Hello, ${name}!`);
+         *     this.displayPrompt();
+         *   }
+         * });
+         * replServer.defineCommand('saybye', function saybye() {
+         *   console.log('Goodbye!');
+         *   this.close();
+         * });
+         * ```
+         *
+         * The new commands can then be used from within the REPL instance:
+         *
+         * ```console
+         * > .sayhello Node.js User
+         * Hello, Node.js User!
+         * > .saybye
+         * Goodbye!
+         * ```
+         * @since v0.3.0
+         * @param keyword The command keyword (*without* a leading `.` character).
+         * @param cmd The function to invoke when the command is processed.
+         */
+        defineCommand(keyword: string, cmd: REPLCommandAction | REPLCommand): void;
+        /**
+         * The `replServer.displayPrompt()` method readies the REPL instance for input
+         * from the user, printing the configured `prompt` to a new line in the `output`and resuming the `input` to accept new input.
+         *
+         * When multi-line input is being entered, an ellipsis is printed rather than the
+         * 'prompt'.
+         *
+         * When `preserveCursor` is `true`, the cursor placement will not be reset to `0`.
+         *
+         * The `replServer.displayPrompt` method is primarily intended to be called from
+         * within the action function for commands registered using the`replServer.defineCommand()` method.
+         * @since v0.1.91
+         */
+        displayPrompt(preserveCursor?: boolean): void;
+        /**
+         * The `replServer.clearBufferedCommand()` method clears any command that has been
+         * buffered but not yet executed. This method is primarily intended to be
+         * called from within the action function for commands registered using the`replServer.defineCommand()` method.
+         * @since v9.0.0
+         */
+        clearBufferedCommand(): void;
+        /**
+         * Initializes a history log file for the REPL instance. When executing the
+         * Node.js binary and using the command-line REPL, a history file is initialized
+         * by default. However, this is not the case when creating a REPL
+         * programmatically. Use this method to initialize a history log file when working
+         * with REPL instances programmatically.
+         * @since v11.10.0
+         * @param historyPath the path to the history file
+         * @param callback called when history writes are ready or upon error
+         */
+        setupHistory(path: string, callback: (err: Error | null, repl: this) => void): void;
+        /**
+         * events.EventEmitter
+         * 1. close - inherited from `readline.Interface`
+         * 2. line - inherited from `readline.Interface`
+         * 3. pause - inherited from `readline.Interface`
+         * 4. resume - inherited from `readline.Interface`
+         * 5. SIGCONT - inherited from `readline.Interface`
+         * 6. SIGINT - inherited from `readline.Interface`
+         * 7. SIGTSTP - inherited from `readline.Interface`
+         * 8. exit
+         * 9. reset
+         */
+        addListener(event: string, listener: (...args: any[]) => void): this;
+        addListener(event: 'close', listener: () => void): this;
+        addListener(event: 'line', listener: (input: string) => void): this;
+        addListener(event: 'pause', listener: () => void): this;
+        addListener(event: 'resume', listener: () => void): this;
+        addListener(event: 'SIGCONT', listener: () => void): this;
+        addListener(event: 'SIGINT', listener: () => void): this;
+        addListener(event: 'SIGTSTP', listener: () => void): this;
+        addListener(event: 'exit', listener: () => void): this;
+        addListener(event: 'reset', listener: (context: Context) => void): this;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        emit(event: 'close'): boolean;
+        emit(event: 'line', input: string): boolean;
+        emit(event: 'pause'): boolean;
+        emit(event: 'resume'): boolean;
+        emit(event: 'SIGCONT'): boolean;
+        emit(event: 'SIGINT'): boolean;
+        emit(event: 'SIGTSTP'): boolean;
+        emit(event: 'exit'): boolean;
+        emit(event: 'reset', context: Context): boolean;
+        on(event: string, listener: (...args: any[]) => void): this;
+        on(event: 'close', listener: () => void): this;
+        on(event: 'line', listener: (input: string) => void): this;
+        on(event: 'pause', listener: () => void): this;
+        on(event: 'resume', listener: () => void): this;
+        on(event: 'SIGCONT', listener: () => void): this;
+        on(event: 'SIGINT', listener: () => void): this;
+        on(event: 'SIGTSTP', listener: () => void): this;
+        on(event: 'exit', listener: () => void): this;
+        on(event: 'reset', listener: (context: Context) => void): this;
+        once(event: string, listener: (...args: any[]) => void): this;
+        once(event: 'close', listener: () => void): this;
+        once(event: 'line', listener: (input: string) => void): this;
+        once(event: 'pause', listener: () => void): this;
+        once(event: 'resume', listener: () => void): this;
+        once(event: 'SIGCONT', listener: () => void): this;
+        once(event: 'SIGINT', listener: () => void): this;
+        once(event: 'SIGTSTP', listener: () => void): this;
+        once(event: 'exit', listener: () => void): this;
+        once(event: 'reset', listener: (context: Context) => void): this;
+        prependListener(event: string, listener: (...args: any[]) => void): this;
+        prependListener(event: 'close', listener: () => void): this;
+        prependListener(event: 'line', listener: (input: string) => void): this;
+        prependListener(event: 'pause', listener: () => void): this;
+        prependListener(event: 'resume', listener: () => void): this;
+        prependListener(event: 'SIGCONT', listener: () => void): this;
+        prependListener(event: 'SIGINT', listener: () => void): this;
+        prependListener(event: 'SIGTSTP', listener: () => void): this;
+        prependListener(event: 'exit', listener: () => void): this;
+        prependListener(event: 'reset', listener: (context: Context) => void): this;
+        prependOnceListener(event: string, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'close', listener: () => void): this;
+        prependOnceListener(event: 'line', listener: (input: string) => void): this;
+        prependOnceListener(event: 'pause', listener: () => void): this;
+        prependOnceListener(event: 'resume', listener: () => void): this;
+        prependOnceListener(event: 'SIGCONT', listener: () => void): this;
+        prependOnceListener(event: 'SIGINT', listener: () => void): this;
+        prependOnceListener(event: 'SIGTSTP', listener: () => void): this;
+        prependOnceListener(event: 'exit', listener: () => void): this;
+        prependOnceListener(event: 'reset', listener: (context: Context) => void): this;
+    }
+    /**
+     * A flag passed in the REPL options. Evaluates expressions in sloppy mode.
+     */
+    const REPL_MODE_SLOPPY: unique symbol;
+    /**
+     * A flag passed in the REPL options. Evaluates expressions in strict mode.
+     * This is equivalent to prefacing every repl statement with `'use strict'`.
+     */
+    const REPL_MODE_STRICT: unique symbol;
+    /**
+     * The `repl.start()` method creates and starts a {@link REPLServer} instance.
+     *
+     * If `options` is a string, then it specifies the input prompt:
+     *
+     * ```js
+     * const repl = require('repl');
+     *
+     * // a Unix style prompt
+     * repl.start('$ ');
+     * ```
+     * @since v0.1.91
+     */
+    function start(options?: string | ReplOptions): REPLServer;
+    /**
+     * Indicates a recoverable error that a `REPLServer` can use to support multi-line input.
+     *
+     * @see https://nodejs.org/dist/latest-v10.x/docs/api/repl.html#repl_recoverable_errors
+     */
+    class Recoverable extends SyntaxError {
+        err: Error;
+        constructor(err: Error);
+    }
+}
+declare module 'node:repl' {
+    export * from 'repl';
+}

backend/node_modules/@types/node/stream/consumers.d.ts

@@ -0,0 +1,24 @@
+// Duplicates of interface in lib.dom.ts.
+// Duplicated here rather than referencing lib.dom.ts because doing so causes lib.dom.ts to be loaded for "test-all"
+// Which in turn causes tests to pass that shouldn't pass.
+//
+// This interface is not, and should not be, exported.
+interface Blob {
+    readonly size: number;
+    readonly type: string;
+    arrayBuffer(): Promise<ArrayBuffer>;
+    slice(start?: number, end?: number, contentType?: string): Blob;
+    stream(): NodeJS.ReadableStream;
+    text(): Promise<string>;
+}
+declare module 'stream/consumers' {
+    import { Readable } from 'node:stream';
+    function buffer(stream: NodeJS.ReadableStream | Readable | AsyncIterator<any>): Promise<Buffer>;
+    function text(stream: NodeJS.ReadableStream | Readable | AsyncIterator<any>): Promise<string>;
+    function arrayBuffer(stream: NodeJS.ReadableStream | Readable | AsyncIterator<any>): Promise<ArrayBuffer>;
+    function blob(stream: NodeJS.ReadableStream | Readable | AsyncIterator<any>): Promise<Blob>;
+    function json(stream: NodeJS.ReadableStream | Readable | AsyncIterator<any>): Promise<unknown>;
+}
+declare module 'node:stream/consumers' {
+    export * from 'stream/consumers';
+}

backend/node_modules/@types/node/stream/promises.d.ts

@@ -0,0 +1,42 @@
+declare module 'stream/promises' {
+    import { FinishedOptions, PipelineSource, PipelineTransform, PipelineDestination, PipelinePromise, PipelineOptions } from 'node:stream';
+    function finished(stream: NodeJS.ReadableStream | NodeJS.WritableStream | NodeJS.ReadWriteStream, options?: FinishedOptions): Promise<void>;
+    function pipeline<A extends PipelineSource<any>, B extends PipelineDestination<A, any>>(source: A, destination: B, options?: PipelineOptions): PipelinePromise<B>;
+    function pipeline<A extends PipelineSource<any>, T1 extends PipelineTransform<A, any>, B extends PipelineDestination<T1, any>>(
+        source: A,
+        transform1: T1,
+        destination: B,
+        options?: PipelineOptions
+    ): PipelinePromise<B>;
+    function pipeline<A extends PipelineSource<any>, T1 extends PipelineTransform<A, any>, T2 extends PipelineTransform<T1, any>, B extends PipelineDestination<T2, any>>(
+        source: A,
+        transform1: T1,
+        transform2: T2,
+        destination: B,
+        options?: PipelineOptions
+    ): PipelinePromise<B>;
+    function pipeline<
+        A extends PipelineSource<any>,
+        T1 extends PipelineTransform<A, any>,
+        T2 extends PipelineTransform<T1, any>,
+        T3 extends PipelineTransform<T2, any>,
+        B extends PipelineDestination<T3, any>
+    >(source: A, transform1: T1, transform2: T2, transform3: T3, destination: B, options?: PipelineOptions): PipelinePromise<B>;
+    function pipeline<
+        A extends PipelineSource<any>,
+        T1 extends PipelineTransform<A, any>,
+        T2 extends PipelineTransform<T1, any>,
+        T3 extends PipelineTransform<T2, any>,
+        T4 extends PipelineTransform<T3, any>,
+        B extends PipelineDestination<T4, any>
+    >(source: A, transform1: T1, transform2: T2, transform3: T3, transform4: T4, destination: B, options?: PipelineOptions): PipelinePromise<B>;
+    function pipeline(streams: ReadonlyArray<NodeJS.ReadableStream | NodeJS.WritableStream | NodeJS.ReadWriteStream>, options?: PipelineOptions): Promise<void>;
+    function pipeline(
+        stream1: NodeJS.ReadableStream,
+        stream2: NodeJS.ReadWriteStream | NodeJS.WritableStream,
+        ...streams: Array<NodeJS.ReadWriteStream | NodeJS.WritableStream | PipelineOptions>
+    ): Promise<void>;
+}
+declare module 'node:stream/promises' {
+    export * from 'stream/promises';
+}

backend/node_modules/@types/node/stream/web.d.ts

@@ -0,0 +1,329 @@
+declare module 'stream/web' {
+    // stub module, pending copy&paste from .d.ts or manual impl
+    // copy from lib.dom.d.ts
+    interface ReadableWritablePair<R = any, W = any> {
+        readable: ReadableStream<R>;
+        /**
+         * Provides a convenient, chainable way of piping this readable stream
+         * through a transform stream (or any other { writable, readable }
+         * pair). It simply pipes the stream into the writable side of the
+         * supplied pair, and returns the readable side for further use.
+         *
+         * Piping a stream will lock it for the duration of the pipe, preventing
+         * any other consumer from acquiring a reader.
+         */
+        writable: WritableStream<W>;
+    }
+    interface StreamPipeOptions {
+        preventAbort?: boolean;
+        preventCancel?: boolean;
+        /**
+         * Pipes this readable stream to a given writable stream destination.
+         * The way in which the piping process behaves under various error
+         * conditions can be customized with a number of passed options. It
+         * returns a promise that fulfills when the piping process completes
+         * successfully, or rejects if any errors were encountered.
+         *
+         * Piping a stream will lock it for the duration of the pipe, preventing
+         * any other consumer from acquiring a reader.
+         *
+         * Errors and closures of the source and destination streams propagate
+         * as follows:
+         *
+         * An error in this source readable stream will abort destination,
+         * unless preventAbort is truthy. The returned promise will be rejected
+         * with the source's error, or with any error that occurs during
+         * aborting the destination.
+         *
+         * An error in destination will cancel this source readable stream,
+         * unless preventCancel is truthy. The returned promise will be rejected
+         * with the destination's error, or with any error that occurs during
+         * canceling the source.
+         *
+         * When this source readable stream closes, destination will be closed,
+         * unless preventClose is truthy. The returned promise will be fulfilled
+         * once this process completes, unless an error is encountered while
+         * closing the destination, in which case it will be rejected with that
+         * error.
+         *
+         * If destination starts out closed or closing, this source readable
+         * stream will be canceled, unless preventCancel is true. The returned
+         * promise will be rejected with an error indicating piping to a closed
+         * stream failed, or with any error that occurs during canceling the
+         * source.
+         *
+         * The signal option can be set to an AbortSignal to allow aborting an
+         * ongoing pipe operation via the corresponding AbortController. In this
+         * case, this source readable stream will be canceled, and destination
+         * aborted, unless the respective options preventCancel or preventAbort
+         * are set.
+         */
+        preventClose?: boolean;
+        signal?: AbortSignal;
+    }
+    interface ReadableStreamGenericReader {
+        readonly closed: Promise<undefined>;
+        cancel(reason?: any): Promise<void>;
+    }
+    interface ReadableStreamDefaultReadValueResult<T> {
+        done: false;
+        value: T;
+    }
+    interface ReadableStreamDefaultReadDoneResult {
+        done: true;
+        value?: undefined;
+    }
+    type ReadableStreamController<T> = ReadableStreamDefaultController<T>;
+    type ReadableStreamDefaultReadResult<T> = ReadableStreamDefaultReadValueResult<T> | ReadableStreamDefaultReadDoneResult;
+    interface ReadableByteStreamControllerCallback {
+        (controller: ReadableByteStreamController): void | PromiseLike<void>;
+    }
+    interface UnderlyingSinkAbortCallback {
+        (reason?: any): void | PromiseLike<void>;
+    }
+    interface UnderlyingSinkCloseCallback {
+        (): void | PromiseLike<void>;
+    }
+    interface UnderlyingSinkStartCallback {
+        (controller: WritableStreamDefaultController): any;
+    }
+    interface UnderlyingSinkWriteCallback<W> {
+        (chunk: W, controller: WritableStreamDefaultController): void | PromiseLike<void>;
+    }
+    interface UnderlyingSourceCancelCallback {
+        (reason?: any): void | PromiseLike<void>;
+    }
+    interface UnderlyingSourcePullCallback<R> {
+        (controller: ReadableStreamController<R>): void | PromiseLike<void>;
+    }
+    interface UnderlyingSourceStartCallback<R> {
+        (controller: ReadableStreamController<R>): any;
+    }
+    interface TransformerFlushCallback<O> {
+        (controller: TransformStreamDefaultController<O>): void | PromiseLike<void>;
+    }
+    interface TransformerStartCallback<O> {
+        (controller: TransformStreamDefaultController<O>): any;
+    }
+    interface TransformerTransformCallback<I, O> {
+        (chunk: I, controller: TransformStreamDefaultController<O>): void | PromiseLike<void>;
+    }
+    interface UnderlyingByteSource {
+        autoAllocateChunkSize?: number;
+        cancel?: ReadableStreamErrorCallback;
+        pull?: ReadableByteStreamControllerCallback;
+        start?: ReadableByteStreamControllerCallback;
+        type: 'bytes';
+    }
+    interface UnderlyingSource<R = any> {
+        cancel?: UnderlyingSourceCancelCallback;
+        pull?: UnderlyingSourcePullCallback<R>;
+        start?: UnderlyingSourceStartCallback<R>;
+        type?: undefined;
+    }
+    interface UnderlyingSink<W = any> {
+        abort?: UnderlyingSinkAbortCallback;
+        close?: UnderlyingSinkCloseCallback;
+        start?: UnderlyingSinkStartCallback;
+        type?: undefined;
+        write?: UnderlyingSinkWriteCallback<W>;
+    }
+    interface ReadableStreamErrorCallback {
+        (reason: any): void | PromiseLike<void>;
+    }
+    /** This Streams API interface represents a readable stream of byte data. */
+    interface ReadableStream<R = any> {
+        readonly locked: boolean;
+        cancel(reason?: any): Promise<void>;
+        getReader(): ReadableStreamDefaultReader<R>;
+        pipeThrough<T>(transform: ReadableWritablePair<T, R>, options?: StreamPipeOptions): ReadableStream<T>;
+        pipeTo(destination: WritableStream<R>, options?: StreamPipeOptions): Promise<void>;
+        tee(): [ReadableStream<R>, ReadableStream<R>];
+        [Symbol.asyncIterator](options?: { preventCancel?: boolean }): AsyncIterableIterator<R>;
+    }
+    const ReadableStream: {
+        prototype: ReadableStream;
+        new (underlyingSource: UnderlyingByteSource, strategy?: QueuingStrategy<Uint8Array>): ReadableStream<Uint8Array>;
+        new <R = any>(underlyingSource?: UnderlyingSource<R>, strategy?: QueuingStrategy<R>): ReadableStream<R>;
+    };
+    interface ReadableStreamDefaultReader<R = any> extends ReadableStreamGenericReader {
+        read(): Promise<ReadableStreamDefaultReadResult<R>>;
+        releaseLock(): void;
+    }
+    const ReadableStreamDefaultReader: {
+        prototype: ReadableStreamDefaultReader;
+        new <R = any>(stream: ReadableStream<R>): ReadableStreamDefaultReader<R>;
+    };
+    const ReadableStreamBYOBReader: any;
+    const ReadableStreamBYOBRequest: any;
+    interface ReadableByteStreamController {
+        readonly byobRequest: undefined;
+        readonly desiredSize: number | null;
+        close(): void;
+        enqueue(chunk: ArrayBufferView): void;
+        error(error?: any): void;
+    }
+    const ReadableByteStreamController: {
+        prototype: ReadableByteStreamController;
+        new (): ReadableByteStreamController;
+    };
+    interface ReadableStreamDefaultController<R = any> {
+        readonly desiredSize: number | null;
+        close(): void;
+        enqueue(chunk?: R): void;
+        error(e?: any): void;
+    }
+    const ReadableStreamDefaultController: {
+        prototype: ReadableStreamDefaultController;
+        new (): ReadableStreamDefaultController;
+    };
+    interface Transformer<I = any, O = any> {
+        flush?: TransformerFlushCallback<O>;
+        readableType?: undefined;
+        start?: TransformerStartCallback<O>;
+        transform?: TransformerTransformCallback<I, O>;
+        writableType?: undefined;
+    }
+    interface TransformStream<I = any, O = any> {
+        readonly readable: ReadableStream<O>;
+        readonly writable: WritableStream<I>;
+    }
+    const TransformStream: {
+        prototype: TransformStream;
+        new <I = any, O = any>(transformer?: Transformer<I, O>, writableStrategy?: QueuingStrategy<I>, readableStrategy?: QueuingStrategy<O>): TransformStream<I, O>;
+    };
+    interface TransformStreamDefaultController<O = any> {
+        readonly desiredSize: number | null;
+        enqueue(chunk?: O): void;
+        error(reason?: any): void;
+        terminate(): void;
+    }
+    const TransformStreamDefaultController: {
+        prototype: TransformStreamDefaultController;
+        new (): TransformStreamDefaultController;
+    };
+    /**
+     * This Streams API interface provides a standard abstraction for writing
+     * streaming data to a destination, known as a sink. This object comes with
+     * built-in back pressure and queuing.
+     */
+    interface WritableStream<W = any> {
+        readonly locked: boolean;
+        abort(reason?: any): Promise<void>;
+        close(): Promise<void>;
+        getWriter(): WritableStreamDefaultWriter<W>;
+    }
+    const WritableStream: {
+        prototype: WritableStream;
+        new <W = any>(underlyingSink?: UnderlyingSink<W>, strategy?: QueuingStrategy<W>): WritableStream<W>;
+    };
+    /**
+     * This Streams API interface is the object returned by
+     * WritableStream.getWriter() and once created locks the < writer to the
+     * WritableStream ensuring that no other streams can write to the underlying
+     * sink.
+     */
+    interface WritableStreamDefaultWriter<W = any> {
+        readonly closed: Promise<undefined>;
+        readonly desiredSize: number | null;
+        readonly ready: Promise<undefined>;
+        abort(reason?: any): Promise<void>;
+        close(): Promise<void>;
+        releaseLock(): void;
+        write(chunk?: W): Promise<void>;
+    }
+    const WritableStreamDefaultWriter: {
+        prototype: WritableStreamDefaultWriter;
+        new <W = any>(stream: WritableStream<W>): WritableStreamDefaultWriter<W>;
+    };
+    /**
+     * This Streams API interface represents a controller allowing control of a
+     * WritableStream's state. When constructing a WritableStream, the
+     * underlying sink is given a corresponding WritableStreamDefaultController
+     * instance to manipulate.
+     */
+    interface WritableStreamDefaultController {
+        error(e?: any): void;
+    }
+    const WritableStreamDefaultController: {
+        prototype: WritableStreamDefaultController;
+        new (): WritableStreamDefaultController;
+    };
+    interface QueuingStrategy<T = any> {
+        highWaterMark?: number;
+        size?: QueuingStrategySize<T>;
+    }
+    interface QueuingStrategySize<T = any> {
+        (chunk?: T): number;
+    }
+    interface QueuingStrategyInit {
+        /**
+         * Creates a new ByteLengthQueuingStrategy with the provided high water
+         * mark.
+         *
+         * Note that the provided high water mark will not be validated ahead of
+         * time. Instead, if it is negative, NaN, or not a number, the resulting
+         * ByteLengthQueuingStrategy will cause the corresponding stream
+         * constructor to throw.
+         */
+        highWaterMark: number;
+    }
+    /**
+     * This Streams API interface provides a built-in byte length queuing
+     * strategy that can be used when constructing streams.
+     */
+    interface ByteLengthQueuingStrategy extends QueuingStrategy<ArrayBufferView> {
+        readonly highWaterMark: number;
+        readonly size: QueuingStrategySize<ArrayBufferView>;
+    }
+    const ByteLengthQueuingStrategy: {
+        prototype: ByteLengthQueuingStrategy;
+        new (init: QueuingStrategyInit): ByteLengthQueuingStrategy;
+    };
+    /**
+     * This Streams API interface provides a built-in byte length queuing
+     * strategy that can be used when constructing streams.
+     */
+    interface CountQueuingStrategy extends QueuingStrategy {
+        readonly highWaterMark: number;
+        readonly size: QueuingStrategySize;
+    }
+    const CountQueuingStrategy: {
+        prototype: CountQueuingStrategy;
+        new (init: QueuingStrategyInit): CountQueuingStrategy;
+    };
+    interface TextEncoderStream {
+        /** Returns "utf-8". */
+        readonly encoding: 'utf-8';
+        readonly readable: ReadableStream<Uint8Array>;
+        readonly writable: WritableStream<string>;
+        readonly [Symbol.toStringTag]: string;
+    }
+    const TextEncoderStream: {
+        prototype: TextEncoderStream;
+        new (): TextEncoderStream;
+    };
+    interface TextDecoderOptions {
+        fatal?: boolean;
+        ignoreBOM?: boolean;
+    }
+    type BufferSource = ArrayBufferView | ArrayBuffer;
+    interface TextDecoderStream {
+        /** Returns encoding's name, lower cased. */
+        readonly encoding: string;
+        /** Returns `true` if error mode is "fatal", and `false` otherwise. */
+        readonly fatal: boolean;
+        /** Returns `true` if ignore BOM flag is set, and `false` otherwise. */
+        readonly ignoreBOM: boolean;
+        readonly readable: ReadableStream<string>;
+        readonly writable: WritableStream<BufferSource>;
+        readonly [Symbol.toStringTag]: string;
+    }
+    const TextDecoderStream: {
+        prototype: TextDecoderStream;
+        new (label?: string, options?: TextDecoderOptions): TextDecoderStream;
+    };
+}
+declare module 'node:stream/web' {
+    export * from 'stream/web';
+}

backend/node_modules/@types/node/string_decoder.d.ts

@@ -0,0 +1,67 @@
+/**
+ * The `string_decoder` module provides an API for decoding `Buffer` objects into
+ * strings in a manner that preserves encoded multi-byte UTF-8 and UTF-16
+ * characters. It can be accessed using:
+ *
+ * ```js
+ * const { StringDecoder } = require('string_decoder');
+ * ```
+ *
+ * The following example shows the basic use of the `StringDecoder` class.
+ *
+ * ```js
+ * const { StringDecoder } = require('string_decoder');
+ * const decoder = new StringDecoder('utf8');
+ *
+ * const cent = Buffer.from([0xC2, 0xA2]);
+ * console.log(decoder.write(cent));
+ *
+ * const euro = Buffer.from([0xE2, 0x82, 0xAC]);
+ * console.log(decoder.write(euro));
+ * ```
+ *
+ * When a `Buffer` instance is written to the `StringDecoder` instance, an
+ * internal buffer is used to ensure that the decoded string does not contain
+ * any incomplete multibyte characters. These are held in the buffer until the
+ * next call to `stringDecoder.write()` or until `stringDecoder.end()` is called.
+ *
+ * In the following example, the three UTF-8 encoded bytes of the European Euro
+ * symbol (`€`) are written over three separate operations:
+ *
+ * ```js
+ * const { StringDecoder } = require('string_decoder');
+ * const decoder = new StringDecoder('utf8');
+ *
+ * decoder.write(Buffer.from([0xE2]));
+ * decoder.write(Buffer.from([0x82]));
+ * console.log(decoder.end(Buffer.from([0xAC])));
+ * ```
+ * @see [source](https://github.com/nodejs/node/blob/v17.0.0/lib/string_decoder.js)
+ */
+declare module 'string_decoder' {
+    class StringDecoder {
+        constructor(encoding?: BufferEncoding);
+        /**
+         * Returns a decoded string, ensuring that any incomplete multibyte characters at
+         * the end of the `Buffer`, or `TypedArray`, or `DataView` are omitted from the
+         * returned string and stored in an internal buffer for the next call to`stringDecoder.write()` or `stringDecoder.end()`.
+         * @since v0.1.99
+         * @param buffer A `Buffer`, or `TypedArray`, or `DataView` containing the bytes to decode.
+         */
+        write(buffer: Buffer): string;
+        /**
+         * Returns any remaining input stored in the internal buffer as a string. Bytes
+         * representing incomplete UTF-8 and UTF-16 characters will be replaced with
+         * substitution characters appropriate for the character encoding.
+         *
+         * If the `buffer` argument is provided, one final call to `stringDecoder.write()`is performed before returning the remaining input.
+         * After `end()` is called, the `stringDecoder` object can be reused for new input.
+         * @since v0.9.3
+         * @param buffer A `Buffer`, or `TypedArray`, or `DataView` containing the bytes to decode.
+         */
+        end(buffer?: Buffer): string;
+    }
+}
+declare module 'node:string_decoder' {
+    export * from 'string_decoder';
+}

backend/node_modules/@types/node/timers.d.ts

@@ -0,0 +1,94 @@
+/**
+ * The `timer` module exposes a global API for scheduling functions to
+ * be called at some future period of time. Because the timer functions are
+ * globals, there is no need to call `require('timers')` to use the API.
+ *
+ * The timer functions within Node.js implement a similar API as the timers API
+ * provided by Web Browsers but use a different internal implementation that is
+ * built around the Node.js [Event Loop](https://nodejs.org/en/docs/guides/event-loop-timers-and-nexttick/#setimmediate-vs-settimeout).
+ * @see [source](https://github.com/nodejs/node/blob/v17.0.0/lib/timers.js)
+ */
+declare module 'timers' {
+    import { Abortable } from 'node:events';
+    import { setTimeout as setTimeoutPromise, setImmediate as setImmediatePromise, setInterval as setIntervalPromise } from 'node:timers/promises';
+    interface TimerOptions extends Abortable {
+        /**
+         * Set to `false` to indicate that the scheduled `Timeout`
+         * should not require the Node.js event loop to remain active.
+         * @default true
+         */
+        ref?: boolean | undefined;
+    }
+    let setTimeout: typeof global.setTimeout;
+    let clearTimeout: typeof global.clearTimeout;
+    let setInterval: typeof global.setInterval;
+    let clearInterval: typeof global.clearInterval;
+    let setImmediate: typeof global.setImmediate;
+    let clearImmediate: typeof global.clearImmediate;
+    global {
+        namespace NodeJS {
+            // compatibility with older typings
+            interface Timer extends RefCounted {
+                hasRef(): boolean;
+                refresh(): this;
+                [Symbol.toPrimitive](): number;
+            }
+            interface Immediate extends RefCounted {
+                /**
+                 * If true, the `Immediate` object will keep the Node.js event loop active.
+                 * @since v11.0.0
+                 */
+                hasRef(): boolean;
+                _onImmediate: Function; // to distinguish it from the Timeout class
+            }
+            interface Timeout extends Timer {
+                /**
+                 * If true, the `Timeout` object will keep the Node.js event loop active.
+                 * @since v11.0.0
+                 */
+                hasRef(): boolean;
+                /**
+                 * Sets the timer's start time to the current time, and reschedules the timer to
+                 * call its callback at the previously specified duration adjusted to the current
+                 * time. This is useful for refreshing a timer without allocating a new
+                 * JavaScript object.
+                 *
+                 * Using this on a timer that has already called its callback will reactivate the
+                 * timer.
+                 * @since v10.2.0
+                 * @return a reference to `timeout`
+                 */
+                refresh(): this;
+                [Symbol.toPrimitive](): number;
+            }
+        }
+        function setTimeout<TArgs extends any[]>(callback: (...args: TArgs) => void, ms?: number, ...args: TArgs): NodeJS.Timeout;
+        // util.promisify no rest args compability
+        // tslint:disable-next-line void-return
+        function setTimeout(callback: (args: void) => void, ms?: number): NodeJS.Timeout;
+        namespace setTimeout {
+            const __promisify__: typeof setTimeoutPromise;
+        }
+        function clearTimeout(timeoutId: NodeJS.Timeout): void;
+        function setInterval<TArgs extends any[]>(callback: (...args: TArgs) => void, ms?: number, ...args: TArgs): NodeJS.Timer;
+        // util.promisify no rest args compability
+        // tslint:disable-next-line void-return
+        function setInterval(callback: (args: void) => void, ms?: number): NodeJS.Timer;
+        namespace setInterval {
+            const __promisify__: typeof setIntervalPromise;
+        }
+        function clearInterval(intervalId: NodeJS.Timeout): void;
+        function setImmediate<TArgs extends any[]>(callback: (...args: TArgs) => void, ...args: TArgs): NodeJS.Immediate;
+        // util.promisify no rest args compability
+        // tslint:disable-next-line void-return
+        function setImmediate(callback: (args: void) => void): NodeJS.Immediate;
+        namespace setImmediate {
+            const __promisify__: typeof setImmediatePromise;
+        }
+        function clearImmediate(immediateId: NodeJS.Immediate): void;
+        function queueMicrotask(callback: () => void): void;
+    }
+}
+declare module 'node:timers' {
+    export * from 'timers';
+}

backend/node_modules/@types/node/timers/promises.d.ts

@@ -0,0 +1,68 @@
+/**
+ * The `timers/promises` API provides an alternative set of timer functions
+ * that return `Promise` objects. The API is accessible via`require('timers/promises')`.
+ *
+ * ```js
+ * import {
+ *   setTimeout,
+ *   setImmediate,
+ *   setInterval,
+ * } from 'timers/promises';
+ * ```
+ * @since v15.0.0
+ */
+declare module 'timers/promises' {
+    import { TimerOptions } from 'node:timers';
+    /**
+     * ```js
+     * import {
+     *   setTimeout,
+     * } from 'timers/promises';
+     *
+     * const res = await setTimeout(100, 'result');
+     *
+     * console.log(res);  // Prints 'result'
+     * ```
+     * @since v15.0.0
+     * @param [delay=1] The number of milliseconds to wait before fulfilling the promise.
+     * @param value A value with which the promise is fulfilled.
+     */
+    function setTimeout<T = void>(delay?: number, value?: T, options?: TimerOptions): Promise<T>;
+    /**
+     * ```js
+     * import {
+     *   setImmediate,
+     * } from 'timers/promises';
+     *
+     * const res = await setImmediate('result');
+     *
+     * console.log(res);  // Prints 'result'
+     * ```
+     * @since v15.0.0
+     * @param value A value with which the promise is fulfilled.
+     */
+    function setImmediate<T = void>(value?: T, options?: TimerOptions): Promise<T>;
+    /**
+     * Returns an async iterator that generates values in an interval of `delay` ms.
+     *
+     * ```js
+     * import {
+     *   setInterval,
+     * } from 'timers/promises';
+     *
+     * const interval = 100;
+     * for await (const startTime of setInterval(interval, Date.now())) {
+     *   const now = Date.now();
+     *   console.log(now);
+     *   if ((now - startTime) > 1000)
+     *     break;
+     * }
+     * console.log(Date.now());
+     * ```
+     * @since v15.9.0
+     */
+    function setInterval<T = void>(delay?: number, value?: T, options?: TimerOptions): AsyncIterable<T>;
+}
+declare module 'node:timers/promises' {
+    export * from 'timers/promises';
+}

backend/node_modules/@types/node/trace_events.d.ts

@@ -0,0 +1,161 @@
+/**
+ * The `trace_events` module provides a mechanism to centralize tracing information
+ * generated by V8, Node.js core, and userspace code.
+ *
+ * Tracing can be enabled with the `--trace-event-categories` command-line flag
+ * or by using the `trace_events` module. The `--trace-event-categories` flag
+ * accepts a list of comma-separated category names.
+ *
+ * The available categories are:
+ *
+ * * `node`: An empty placeholder.
+ * * `node.async_hooks`: Enables capture of detailed `async_hooks` trace data.
+ * The `async_hooks` events have a unique `asyncId` and a special `triggerId` `triggerAsyncId` property.
+ * * `node.bootstrap`: Enables capture of Node.js bootstrap milestones.
+ * * `node.console`: Enables capture of `console.time()` and `console.count()`output.
+ * * `node.dns.native`: Enables capture of trace data for DNS queries.
+ * * `node.environment`: Enables capture of Node.js Environment milestones.
+ * * `node.fs.sync`: Enables capture of trace data for file system sync methods.
+ * * `node.perf`: Enables capture of `Performance API` measurements.
+ *    * `node.perf.usertiming`: Enables capture of only Performance API User Timing
+ *    measures and marks.
+ *    * `node.perf.timerify`: Enables capture of only Performance API timerify
+ *    measurements.
+ * * `node.promises.rejections`: Enables capture of trace data tracking the number
+ * of unhandled Promise rejections and handled-after-rejections.
+ * * `node.vm.script`: Enables capture of trace data for the `vm` module's`runInNewContext()`, `runInContext()`, and `runInThisContext()` methods.
+ * * `v8`: The `V8` events are GC, compiling, and execution related.
+ *
+ * By default the `node`, `node.async_hooks`, and `v8` categories are enabled.
+ *
+ * ```bash
+ * node --trace-event-categories v8,node,node.async_hooks server.js
+ * ```
+ *
+ * Prior versions of Node.js required the use of the `--trace-events-enabled`flag to enable trace events. This requirement has been removed. However, the`--trace-events-enabled` flag _may_ still be
+ * used and will enable the`node`, `node.async_hooks`, and `v8` trace event categories by default.
+ *
+ * ```bash
+ * node --trace-events-enabled
+ *
+ * # is equivalent to
+ *
+ * node --trace-event-categories v8,node,node.async_hooks
+ * ```
+ *
+ * Alternatively, trace events may be enabled using the `trace_events` module:
+ *
+ * ```js
+ * const trace_events = require('trace_events');
+ * const tracing = trace_events.createTracing({ categories: ['node.perf'] });
+ * tracing.enable();  // Enable trace event capture for the 'node.perf' category
+ *
+ * // do work
+ *
+ * tracing.disable();  // Disable trace event capture for the 'node.perf' category
+ * ```
+ *
+ * Running Node.js with tracing enabled will produce log files that can be opened
+ * in the [`chrome://tracing`](https://www.chromium.org/developers/how-tos/trace-event-profiling-tool) tab of Chrome.
+ *
+ * The logging file is by default called `node_trace.${rotation}.log`, where`${rotation}` is an incrementing log-rotation id. The filepath pattern can
+ * be specified with `--trace-event-file-pattern` that accepts a template
+ * string that supports `${rotation}` and `${pid}`:
+ *
+ * ```bash
+ * node --trace-event-categories v8 --trace-event-file-pattern '${pid}-${rotation}.log' server.js
+ * ```
+ *
+ * The tracing system uses the same time source
+ * as the one used by `process.hrtime()`.
+ * However the trace-event timestamps are expressed in microseconds,
+ * unlike `process.hrtime()` which returns nanoseconds.
+ *
+ * The features from this module are not available in `Worker` threads.
+ * @experimental
+ * @see [source](https://github.com/nodejs/node/blob/v17.0.0/lib/trace_events.js)
+ */
+declare module 'trace_events' {
+    /**
+     * The `Tracing` object is used to enable or disable tracing for sets of
+     * categories. Instances are created using the
+     * `trace_events.createTracing()` method.
+     *
+     * When created, the `Tracing` object is disabled. Calling the
+     * `tracing.enable()` method adds the categories to the set of enabled trace
+     * event categories. Calling `tracing.disable()` will remove the categories
+     * from the set of enabled trace event categories.
+     */
+    interface Tracing {
+        /**
+         * A comma-separated list of the trace event categories covered by this
+         * `Tracing` object.
+         */
+        readonly categories: string;
+        /**
+         * Disables this `Tracing` object.
+         *
+         * Only trace event categories _not_ covered by other enabled `Tracing`
+         * objects and _not_ specified by the `--trace-event-categories` flag
+         * will be disabled.
+         */
+        disable(): void;
+        /**
+         * Enables this `Tracing` object for the set of categories covered by
+         * the `Tracing` object.
+         */
+        enable(): void;
+        /**
+         * `true` only if the `Tracing` object has been enabled.
+         */
+        readonly enabled: boolean;
+    }
+    interface CreateTracingOptions {
+        /**
+         * An array of trace category names. Values included in the array are
+         * coerced to a string when possible. An error will be thrown if the
+         * value cannot be coerced.
+         */
+        categories: string[];
+    }
+    /**
+     * Creates and returns a `Tracing` object for the given set of `categories`.
+     *
+     * ```js
+     * const trace_events = require('trace_events');
+     * const categories = ['node.perf', 'node.async_hooks'];
+     * const tracing = trace_events.createTracing({ categories });
+     * tracing.enable();
+     * // do stuff
+     * tracing.disable();
+     * ```
+     * @since v10.0.0
+     * @return .
+     */
+    function createTracing(options: CreateTracingOptions): Tracing;
+    /**
+     * Returns a comma-separated list of all currently-enabled trace event
+     * categories. The current set of enabled trace event categories is determined
+     * by the _union_ of all currently-enabled `Tracing` objects and any categories
+     * enabled using the `--trace-event-categories` flag.
+     *
+     * Given the file `test.js` below, the command`node --trace-event-categories node.perf test.js` will print`'node.async_hooks,node.perf'` to the console.
+     *
+     * ```js
+     * const trace_events = require('trace_events');
+     * const t1 = trace_events.createTracing({ categories: ['node.async_hooks'] });
+     * const t2 = trace_events.createTracing({ categories: ['node.perf'] });
+     * const t3 = trace_events.createTracing({ categories: ['v8'] });
+     *
+     * t1.enable();
+     * t2.enable();
+     *
+     * console.log(trace_events.getEnabledCategories());
+     * ```
+     * @since v10.0.0
+     */
+    function getEnabledCategories(): string | undefined;
+}
+declare module 'node:trace_events' {
+    export * from 'trace_events';
+}

backend/node_modules/@types/node/tty.d.ts

@@ -0,0 +1,204 @@
+/**
+ * The `tty` module provides the `tty.ReadStream` and `tty.WriteStream` classes.
+ * In most cases, it will not be necessary or possible to use this module directly.
+ * However, it can be accessed using:
+ *
+ * ```js
+ * const tty = require('tty');
+ * ```
+ *
+ * When Node.js detects that it is being run with a text terminal ("TTY")
+ * attached, `process.stdin` will, by default, be initialized as an instance of`tty.ReadStream` and both `process.stdout` and `process.stderr` will, by
+ * default, be instances of `tty.WriteStream`. The preferred method of determining
+ * whether Node.js is being run within a TTY context is to check that the value of
+ * the `process.stdout.isTTY` property is `true`:
+ *
+ * ```console
+ * $ node -p -e "Boolean(process.stdout.isTTY)"
+ * true
+ * $ node -p -e "Boolean(process.stdout.isTTY)" | cat
+ * false
+ * ```
+ *
+ * In most cases, there should be little to no reason for an application to
+ * manually create instances of the `tty.ReadStream` and `tty.WriteStream`classes.
+ * @see [source](https://github.com/nodejs/node/blob/v17.0.0/lib/tty.js)
+ */
+declare module 'tty' {
+    import * as net from 'node:net';
+    /**
+     * The `tty.isatty()` method returns `true` if the given `fd` is associated with
+     * a TTY and `false` if it is not, including whenever `fd` is not a non-negative
+     * integer.
+     * @since v0.5.8
+     * @param fd A numeric file descriptor
+     */
+    function isatty(fd: number): boolean;
+    /**
+     * Represents the readable side of a TTY. In normal circumstances `process.stdin` will be the only `tty.ReadStream` instance in a Node.js
+     * process and there should be no reason to create additional instances.
+     * @since v0.5.8
+     */
+    class ReadStream extends net.Socket {
+        constructor(fd: number, options?: net.SocketConstructorOpts);
+        /**
+         * A `boolean` that is `true` if the TTY is currently configured to operate as a
+         * raw device. Defaults to `false`.
+         * @since v0.7.7
+         */
+        isRaw: boolean;
+        /**
+         * Allows configuration of `tty.ReadStream` so that it operates as a raw device.
+         *
+         * When in raw mode, input is always available character-by-character, not
+         * including modifiers. Additionally, all special processing of characters by the
+         * terminal is disabled, including echoing input characters.Ctrl+C will no longer cause a `SIGINT` when in this mode.
+         * @since v0.7.7
+         * @param mode If `true`, configures the `tty.ReadStream` to operate as a raw device. If `false`, configures the `tty.ReadStream` to operate in its default mode. The `readStream.isRaw`
+         * property will be set to the resulting mode.
+         * @return The read stream instance.
+         */
+        setRawMode(mode: boolean): this;
+        /**
+         * A `boolean` that is always `true` for `tty.ReadStream` instances.
+         * @since v0.5.8
+         */
+        isTTY: boolean;
+    }
+    /**
+     * -1 - to the left from cursor
+     *  0 - the entire line
+     *  1 - to the right from cursor
+     */
+    type Direction = -1 | 0 | 1;
+    /**
+     * Represents the writable side of a TTY. In normal circumstances,`process.stdout` and `process.stderr` will be the only`tty.WriteStream` instances created for a Node.js process and there
+     * should be no reason to create additional instances.
+     * @since v0.5.8
+     */
+    class WriteStream extends net.Socket {
+        constructor(fd: number);
+        addListener(event: string, listener: (...args: any[]) => void): this;
+        addListener(event: 'resize', listener: () => void): this;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        emit(event: 'resize'): boolean;
+        on(event: string, listener: (...args: any[]) => void): this;
+        on(event: 'resize', listener: () => void): this;
+        once(event: string, listener: (...args: any[]) => void): this;
+        once(event: 'resize', listener: () => void): this;
+        prependListener(event: string, listener: (...args: any[]) => void): this;
+        prependListener(event: 'resize', listener: () => void): this;
+        prependOnceListener(event: string, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'resize', listener: () => void): this;
+        /**
+         * `writeStream.clearLine()` clears the current line of this `WriteStream` in a
+         * direction identified by `dir`.
+         * @since v0.7.7
+         * @param callback Invoked once the operation completes.
+         * @return `false` if the stream wishes for the calling code to wait for the `'drain'` event to be emitted before continuing to write additional data; otherwise `true`.
+         */
+        clearLine(dir: Direction, callback?: () => void): boolean;
+        /**
+         * `writeStream.clearScreenDown()` clears this `WriteStream` from the current
+         * cursor down.
+         * @since v0.7.7
+         * @param callback Invoked once the operation completes.
+         * @return `false` if the stream wishes for the calling code to wait for the `'drain'` event to be emitted before continuing to write additional data; otherwise `true`.
+         */
+        clearScreenDown(callback?: () => void): boolean;
+        /**
+         * `writeStream.cursorTo()` moves this `WriteStream`'s cursor to the specified
+         * position.
+         * @since v0.7.7
+         * @param callback Invoked once the operation completes.
+         * @return `false` if the stream wishes for the calling code to wait for the `'drain'` event to be emitted before continuing to write additional data; otherwise `true`.
+         */
+        cursorTo(x: number, y?: number, callback?: () => void): boolean;
+        cursorTo(x: number, callback: () => void): boolean;
+        /**
+         * `writeStream.moveCursor()` moves this `WriteStream`'s cursor _relative_ to its
+         * current position.
+         * @since v0.7.7
+         * @param callback Invoked once the operation completes.
+         * @return `false` if the stream wishes for the calling code to wait for the `'drain'` event to be emitted before continuing to write additional data; otherwise `true`.
+         */
+        moveCursor(dx: number, dy: number, callback?: () => void): boolean;
+        /**
+         * Returns:
+         *
+         * * `1` for 2,
+         * * `4` for 16,
+         * * `8` for 256,
+         * * `24` for 16,777,216 colors supported.
+         *
+         * Use this to determine what colors the terminal supports. Due to the nature of
+         * colors in terminals it is possible to either have false positives or false
+         * negatives. It depends on process information and the environment variables that
+         * may lie about what terminal is used.
+         * It is possible to pass in an `env` object to simulate the usage of a specific
+         * terminal. This can be useful to check how specific environment settings behave.
+         *
+         * To enforce a specific color support, use one of the below environment settings.
+         *
+         * * 2 colors: `FORCE_COLOR = 0` (Disables colors)
+         * * 16 colors: `FORCE_COLOR = 1`
+         * * 256 colors: `FORCE_COLOR = 2`
+         * * 16,777,216 colors: `FORCE_COLOR = 3`
+         *
+         * Disabling color support is also possible by using the `NO_COLOR` and`NODE_DISABLE_COLORS` environment variables.
+         * @since v9.9.0
+         * @param [env=process.env] An object containing the environment variables to check. This enables simulating the usage of a specific terminal.
+         */
+        getColorDepth(env?: object): number;
+        /**
+         * Returns `true` if the `writeStream` supports at least as many colors as provided
+         * in `count`. Minimum support is 2 (black and white).
+         *
+         * This has the same false positives and negatives as described in `writeStream.getColorDepth()`.
+         *
+         * ```js
+         * process.stdout.hasColors();
+         * // Returns true or false depending on if `stdout` supports at least 16 colors.
+         * process.stdout.hasColors(256);
+         * // Returns true or false depending on if `stdout` supports at least 256 colors.
+         * process.stdout.hasColors({ TMUX: '1' });
+         * // Returns true.
+         * process.stdout.hasColors(2 ** 24, { TMUX: '1' });
+         * // Returns false (the environment setting pretends to support 2 ** 8 colors).
+         * ```
+         * @since v11.13.0, v10.16.0
+         * @param [count=16] The number of colors that are requested (minimum 2).
+         * @param [env=process.env] An object containing the environment variables to check. This enables simulating the usage of a specific terminal.
+         */
+        hasColors(count?: number): boolean;
+        hasColors(env?: object): boolean;
+        hasColors(count: number, env?: object): boolean;
+        /**
+         * `writeStream.getWindowSize()` returns the size of the TTY
+         * corresponding to this `WriteStream`. The array is of the type`[numColumns, numRows]` where `numColumns` and `numRows` represent the number
+         * of columns and rows in the corresponding TTY.
+         * @since v0.7.7
+         */
+        getWindowSize(): [number, number];
+        /**
+         * A `number` specifying the number of columns the TTY currently has. This property
+         * is updated whenever the `'resize'` event is emitted.
+         * @since v0.7.7
+         */
+        columns: number;
+        /**
+         * A `number` specifying the number of rows the TTY currently has. This property
+         * is updated whenever the `'resize'` event is emitted.
+         * @since v0.7.7
+         */
+        rows: number;
+        /**
+         * A `boolean` that is always `true`.
+         * @since v0.5.8
+         */
+        isTTY: boolean;
+    }
+}
+declare module 'node:tty' {
+    export * from 'tty';
+}

backend/node_modules/@types/node/url.d.ts

@@ -0,0 +1,861 @@
+/**
+ * The `url` module provides utilities for URL resolution and parsing. It can be
+ * accessed using:
+ *
+ * ```js
+ * import url from 'url';
+ * ```
+ * @see [source](https://github.com/nodejs/node/blob/v17.0.0/lib/url.js)
+ */
+declare module 'url' {
+    import { Blob } from 'node:buffer';
+    import { ClientRequestArgs } from 'node:http';
+    import { ParsedUrlQuery, ParsedUrlQueryInput } from 'node:querystring';
+    // Input to `url.format`
+    interface UrlObject {
+        auth?: string | null | undefined;
+        hash?: string | null | undefined;
+        host?: string | null | undefined;
+        hostname?: string | null | undefined;
+        href?: string | null | undefined;
+        pathname?: string | null | undefined;
+        protocol?: string | null | undefined;
+        search?: string | null | undefined;
+        slashes?: boolean | null | undefined;
+        port?: string | number | null | undefined;
+        query?: string | null | ParsedUrlQueryInput | undefined;
+    }
+    // Output of `url.parse`
+    interface Url {
+        auth: string | null;
+        hash: string | null;
+        host: string | null;
+        hostname: string | null;
+        href: string;
+        path: string | null;
+        pathname: string | null;
+        protocol: string | null;
+        search: string | null;
+        slashes: boolean | null;
+        port: string | null;
+        query: string | null | ParsedUrlQuery;
+    }
+    interface UrlWithParsedQuery extends Url {
+        query: ParsedUrlQuery;
+    }
+    interface UrlWithStringQuery extends Url {
+        query: string | null;
+    }
+    /**
+     * The `url.parse()` method takes a URL string, parses it, and returns a URL
+     * object.
+     *
+     * A `TypeError` is thrown if `urlString` is not a string.
+     *
+     * A `URIError` is thrown if the `auth` property is present but cannot be decoded.
+     *
+     * Use of the legacy `url.parse()` method is discouraged. Users should
+     * use the WHATWG `URL` API. Because the `url.parse()` method uses a
+     * lenient, non-standard algorithm for parsing URL strings, security
+     * issues can be introduced. Specifically, issues with [host name spoofing](https://hackerone.com/reports/678487) and
+     * incorrect handling of usernames and passwords have been identified.
+     * @since v0.1.25
+     * @deprecated Legacy: Use the WHATWG URL API instead.
+     * @param urlString The URL string to parse.
+     * @param [parseQueryString=false] If `true`, the `query` property will always be set to an object returned by the {@link querystring} module's `parse()` method. If `false`, the `query` property
+     * on the returned URL object will be an unparsed, undecoded string.
+     * @param [slashesDenoteHost=false] If `true`, the first token after the literal string `//` and preceding the next `/` will be interpreted as the `host`. For instance, given `//foo/bar`, the
+     * result would be `{host: 'foo', pathname: '/bar'}` rather than `{pathname: '//foo/bar'}`.
+     */
+    function parse(urlString: string): UrlWithStringQuery;
+    function parse(urlString: string, parseQueryString: false | undefined, slashesDenoteHost?: boolean): UrlWithStringQuery;
+    function parse(urlString: string, parseQueryString: true, slashesDenoteHost?: boolean): UrlWithParsedQuery;
+    function parse(urlString: string, parseQueryString: boolean, slashesDenoteHost?: boolean): Url;
+    /**
+     * The `url.format()` method returns a formatted URL string derived from`urlObject`.
+     *
+     * ```js
+     * const url = require('url');
+     * url.format({
+     *   protocol: 'https',
+     *   hostname: 'example.com',
+     *   pathname: '/some/path',
+     *   query: {
+     *     page: 1,
+     *     format: 'json'
+     *   }
+     * });
+     *
+     * // => 'https://example.com/some/path?page=1&format=json'
+     * ```
+     *
+     * If `urlObject` is not an object or a string, `url.format()` will throw a `TypeError`.
+     *
+     * The formatting process operates as follows:
+     *
+     * * A new empty string `result` is created.
+     * * If `urlObject.protocol` is a string, it is appended as-is to `result`.
+     * * Otherwise, if `urlObject.protocol` is not `undefined` and is not a string, an `Error` is thrown.
+     * * For all string values of `urlObject.protocol` that _do not end_ with an ASCII
+     * colon (`:`) character, the literal string `:` will be appended to `result`.
+     * * If either of the following conditions is true, then the literal string `//`will be appended to `result`:
+     *    * `urlObject.slashes` property is true;
+     *    * `urlObject.protocol` begins with `http`, `https`, `ftp`, `gopher`, or`file`;
+     * * If the value of the `urlObject.auth` property is truthy, and either`urlObject.host` or `urlObject.hostname` are not `undefined`, the value of`urlObject.auth` will be coerced into a string
+     * and appended to `result`followed by the literal string `@`.
+     * * If the `urlObject.host` property is `undefined` then:
+     *    * If the `urlObject.hostname` is a string, it is appended to `result`.
+     *    * Otherwise, if `urlObject.hostname` is not `undefined` and is not a string,
+     *    an `Error` is thrown.
+     *    * If the `urlObject.port` property value is truthy, and `urlObject.hostname`is not `undefined`:
+     *          * The literal string `:` is appended to `result`, and
+     *          * The value of `urlObject.port` is coerced to a string and appended to`result`.
+     * * Otherwise, if the `urlObject.host` property value is truthy, the value of`urlObject.host` is coerced to a string and appended to `result`.
+     * * If the `urlObject.pathname` property is a string that is not an empty string:
+     *    * If the `urlObject.pathname`_does not start_ with an ASCII forward slash
+     *    (`/`), then the literal string `'/'` is appended to `result`.
+     *    * The value of `urlObject.pathname` is appended to `result`.
+     * * Otherwise, if `urlObject.pathname` is not `undefined` and is not a string, an `Error` is thrown.
+     * * If the `urlObject.search` property is `undefined` and if the `urlObject.query`property is an `Object`, the literal string `?` is appended to `result`followed by the output of calling the
+     * `querystring` module's `stringify()`method passing the value of `urlObject.query`.
+     * * Otherwise, if `urlObject.search` is a string:
+     *    * If the value of `urlObject.search`_does not start_ with the ASCII question
+     *    mark (`?`) character, the literal string `?` is appended to `result`.
+     *    * The value of `urlObject.search` is appended to `result`.
+     * * Otherwise, if `urlObject.search` is not `undefined` and is not a string, an `Error` is thrown.
+     * * If the `urlObject.hash` property is a string:
+     *    * If the value of `urlObject.hash`_does not start_ with the ASCII hash (`#`)
+     *    character, the literal string `#` is appended to `result`.
+     *    * The value of `urlObject.hash` is appended to `result`.
+     * * Otherwise, if the `urlObject.hash` property is not `undefined` and is not a
+     * string, an `Error` is thrown.
+     * * `result` is returned.
+     * @since v0.1.25
+     * @deprecated Legacy: Use the WHATWG URL API instead.
+     * @param urlObject A URL object (as returned by `url.parse()` or constructed otherwise). If a string, it is converted to an object by passing it to `url.parse()`.
+     */
+    function format(urlObject: URL, options?: URLFormatOptions): string;
+    /**
+     * The `url.format()` method returns a formatted URL string derived from`urlObject`.
+     *
+     * ```js
+     * const url = require('url');
+     * url.format({
+     *   protocol: 'https',
+     *   hostname: 'example.com',
+     *   pathname: '/some/path',
+     *   query: {
+     *     page: 1,
+     *     format: 'json'
+     *   }
+     * });
+     *
+     * // => 'https://example.com/some/path?page=1&format=json'
+     * ```
+     *
+     * If `urlObject` is not an object or a string, `url.format()` will throw a `TypeError`.
+     *
+     * The formatting process operates as follows:
+     *
+     * * A new empty string `result` is created.
+     * * If `urlObject.protocol` is a string, it is appended as-is to `result`.
+     * * Otherwise, if `urlObject.protocol` is not `undefined` and is not a string, an `Error` is thrown.
+     * * For all string values of `urlObject.protocol` that _do not end_ with an ASCII
+     * colon (`:`) character, the literal string `:` will be appended to `result`.
+     * * If either of the following conditions is true, then the literal string `//`will be appended to `result`:
+     *    * `urlObject.slashes` property is true;
+     *    * `urlObject.protocol` begins with `http`, `https`, `ftp`, `gopher`, or`file`;
+     * * If the value of the `urlObject.auth` property is truthy, and either`urlObject.host` or `urlObject.hostname` are not `undefined`, the value of`urlObject.auth` will be coerced into a string
+     * and appended to `result`followed by the literal string `@`.
+     * * If the `urlObject.host` property is `undefined` then:
+     *    * If the `urlObject.hostname` is a string, it is appended to `result`.
+     *    * Otherwise, if `urlObject.hostname` is not `undefined` and is not a string,
+     *    an `Error` is thrown.
+     *    * If the `urlObject.port` property value is truthy, and `urlObject.hostname`is not `undefined`:
+     *          * The literal string `:` is appended to `result`, and
+     *          * The value of `urlObject.port` is coerced to a string and appended to`result`.
+     * * Otherwise, if the `urlObject.host` property value is truthy, the value of`urlObject.host` is coerced to a string and appended to `result`.
+     * * If the `urlObject.pathname` property is a string that is not an empty string:
+     *    * If the `urlObject.pathname`_does not start_ with an ASCII forward slash
+     *    (`/`), then the literal string `'/'` is appended to `result`.
+     *    * The value of `urlObject.pathname` is appended to `result`.
+     * * Otherwise, if `urlObject.pathname` is not `undefined` and is not a string, an `Error` is thrown.
+     * * If the `urlObject.search` property is `undefined` and if the `urlObject.query`property is an `Object`, the literal string `?` is appended to `result`followed by the output of calling the
+     * `querystring` module's `stringify()`method passing the value of `urlObject.query`.
+     * * Otherwise, if `urlObject.search` is a string:
+     *    * If the value of `urlObject.search`_does not start_ with the ASCII question
+     *    mark (`?`) character, the literal string `?` is appended to `result`.
+     *    * The value of `urlObject.search` is appended to `result`.
+     * * Otherwise, if `urlObject.search` is not `undefined` and is not a string, an `Error` is thrown.
+     * * If the `urlObject.hash` property is a string:
+     *    * If the value of `urlObject.hash`_does not start_ with the ASCII hash (`#`)
+     *    character, the literal string `#` is appended to `result`.
+     *    * The value of `urlObject.hash` is appended to `result`.
+     * * Otherwise, if the `urlObject.hash` property is not `undefined` and is not a
+     * string, an `Error` is thrown.
+     * * `result` is returned.
+     * @since v0.1.25
+     * @deprecated Legacy: Use the WHATWG URL API instead.
+     * @param urlObject A URL object (as returned by `url.parse()` or constructed otherwise). If a string, it is converted to an object by passing it to `url.parse()`.
+     */
+    function format(urlObject: UrlObject | string): string;
+    /**
+     * The `url.resolve()` method resolves a target URL relative to a base URL in a
+     * manner similar to that of a Web browser resolving an anchor tag HREF.
+     *
+     * ```js
+     * const url = require('url');
+     * url.resolve('/one/two/three', 'four');         // '/one/two/four'
+     * url.resolve('http://example.com/', '/one');    // 'http://example.com/one'
+     * url.resolve('http://example.com/one', '/two'); // 'http://example.com/two'
+     * ```
+     *
+     * You can achieve the same result using the WHATWG URL API:
+     *
+     * ```js
+     * function resolve(from, to) {
+     *   const resolvedUrl = new URL(to, new URL(from, 'resolve://'));
+     *   if (resolvedUrl.protocol === 'resolve:') {
+     *     // `from` is a relative URL.
+     *     const { pathname, search, hash } = resolvedUrl;
+     *     return pathname + search + hash;
+     *   }
+     *   return resolvedUrl.toString();
+     * }
+     *
+     * resolve('/one/two/three', 'four');         // '/one/two/four'
+     * resolve('http://example.com/', '/one');    // 'http://example.com/one'
+     * resolve('http://example.com/one', '/two'); // 'http://example.com/two'
+     * ```
+     * @since v0.1.25
+     * @deprecated Legacy: Use the WHATWG URL API instead.
+     * @param from The Base URL being resolved against.
+     * @param to The HREF URL being resolved.
+     */
+    function resolve(from: string, to: string): string;
+    /**
+     * Returns the [Punycode](https://tools.ietf.org/html/rfc5891#section-4.4) ASCII serialization of the `domain`. If `domain` is an
+     * invalid domain, the empty string is returned.
+     *
+     * It performs the inverse operation to {@link domainToUnicode}.
+     *
+     * This feature is only available if the `node` executable was compiled with `ICU` enabled. If not, the domain names are passed through unchanged.
+     *
+     * ```js
+     * import url from 'url';
+     *
+     * console.log(url.domainToASCII('español.com'));
+     * // Prints xn--espaol-zwa.com
+     * console.log(url.domainToASCII('中文.com'));
+     * // Prints xn--fiq228c.com
+     * console.log(url.domainToASCII('xn--iñvalid.com'));
+     * // Prints an empty string
+     * ```
+     * @since v7.4.0, v6.13.0
+     */
+    function domainToASCII(domain: string): string;
+    /**
+     * Returns the Unicode serialization of the `domain`. If `domain` is an invalid
+     * domain, the empty string is returned.
+     *
+     * It performs the inverse operation to {@link domainToASCII}.
+     *
+     * This feature is only available if the `node` executable was compiled with `ICU` enabled. If not, the domain names are passed through unchanged.
+     *
+     * ```js
+     * import url from 'url';
+     *
+     * console.log(url.domainToUnicode('xn--espaol-zwa.com'));
+     * // Prints español.com
+     * console.log(url.domainToUnicode('xn--fiq228c.com'));
+     * // Prints 中文.com
+     * console.log(url.domainToUnicode('xn--iñvalid.com'));
+     * // Prints an empty string
+     * ```
+     * @since v7.4.0, v6.13.0
+     */
+    function domainToUnicode(domain: string): string;
+    /**
+     * This function ensures the correct decodings of percent-encoded characters as
+     * well as ensuring a cross-platform valid absolute path string.
+     *
+     * ```js
+     * import { fileURLToPath } from 'url';
+     *
+     * const __filename = fileURLToPath(import.meta.url);
+     *
+     * new URL('file:///C:/path/').pathname;      // Incorrect: /C:/path/
+     * fileURLToPath('file:///C:/path/');         // Correct:   C:\path\ (Windows)
+     *
+     * new URL('file://nas/foo.txt').pathname;    // Incorrect: /foo.txt
+     * fileURLToPath('file://nas/foo.txt');       // Correct:   \\nas\foo.txt (Windows)
+     *
+     * new URL('file:///你好.txt').pathname;      // Incorrect: /%E4%BD%A0%E5%A5%BD.txt
+     * fileURLToPath('file:///你好.txt');         // Correct:   /你好.txt (POSIX)
+     *
+     * new URL('file:///hello world').pathname;   // Incorrect: /hello%20world
+     * fileURLToPath('file:///hello world');      // Correct:   /hello world (POSIX)
+     * ```
+     * @since v10.12.0
+     * @param url The file URL string or URL object to convert to a path.
+     * @return The fully-resolved platform-specific Node.js file path.
+     */
+    function fileURLToPath(url: string | URL): string;
+    /**
+     * This function ensures that `path` is resolved absolutely, and that the URL
+     * control characters are correctly encoded when converting into a File URL.
+     *
+     * ```js
+     * import { pathToFileURL } from 'url';
+     *
+     * new URL('/foo#1', 'file:');           // Incorrect: file:///foo#1
+     * pathToFileURL('/foo#1');              // Correct:   file:///foo%231 (POSIX)
+     *
+     * new URL('/some/path%.c', 'file:');    // Incorrect: file:///some/path%.c
+     * pathToFileURL('/some/path%.c');       // Correct:   file:///some/path%25.c (POSIX)
+     * ```
+     * @since v10.12.0
+     * @param path The path to convert to a File URL.
+     * @return The file URL object.
+     */
+    function pathToFileURL(path: string): URL;
+    /**
+     * This utility function converts a URL object into an ordinary options object as
+     * expected by the `http.request()` and `https.request()` APIs.
+     *
+     * ```js
+     * import { urlToHttpOptions } from 'url';
+     * const myURL = new URL('https://a:b@測試?abc#foo');
+     *
+     * console.log(urlToHttpOptions(myURL));
+     *
+     * {
+     *   protocol: 'https:',
+     *   hostname: 'xn--g6w251d',
+     *   hash: '#foo',
+     *   search: '?abc',
+     *   pathname: '/',
+     *   path: '/?abc',
+     *   href: 'https://a:b@xn--g6w251d/?abc#foo',
+     *   auth: 'a:b'
+     * }
+     *
+     * ```
+     * @since v15.7.0, v14.18.0
+     * @param url The `WHATWG URL` object to convert to an options object.
+     * @return Options object
+     */
+    function urlToHttpOptions(url: URL): ClientRequestArgs;
+    interface URLFormatOptions {
+        auth?: boolean | undefined;
+        fragment?: boolean | undefined;
+        search?: boolean | undefined;
+        unicode?: boolean | undefined;
+    }
+    /**
+     * Browser-compatible `URL` class, implemented by following the WHATWG URL
+     * Standard. [Examples of parsed URLs](https://url.spec.whatwg.org/#example-url-parsing) may be found in the Standard itself.
+     * The `URL` class is also available on the global object.
+     *
+     * In accordance with browser conventions, all properties of `URL` objects
+     * are implemented as getters and setters on the class prototype, rather than as
+     * data properties on the object itself. Thus, unlike `legacy urlObject` s,
+     * using the `delete` keyword on any properties of `URL` objects (e.g. `delete myURL.protocol`, `delete myURL.pathname`, etc) has no effect but will still
+     * return `true`.
+     * @since v7.0.0, v6.13.0
+     */
+    class URL {
+        /**
+         * Creates a `'blob:nodedata:...'` URL string that represents the given `Blob` object and can be used to retrieve the `Blob` later.
+         *
+         * ```js
+         * const {
+         *   Blob,
+         *   resolveObjectURL,
+         * } = require('buffer');
+         *
+         * const blob = new Blob(['hello']);
+         * const id = URL.createObjectURL(blob);
+         *
+         * // later...
+         *
+         * const otherBlob = resolveObjectURL(id);
+         * console.log(otherBlob.size);
+         * ```
+         *
+         * The data stored by the registered `Blob` will be retained in memory until`URL.revokeObjectURL()` is called to remove it.
+         *
+         * `Blob` objects are registered within the current thread. If using Worker
+         * Threads, `Blob` objects registered within one Worker will not be available
+         * to other workers or the main thread.
+         * @since v16.7.0
+         * @experimental
+         */
+        static createObjectURL(blob: Blob): string;
+        /**
+         * Removes the stored `Blob` identified by the given ID.
+         * @since v16.7.0
+         * @experimental
+         * @param id A `'blob:nodedata:...` URL string returned by a prior call to `URL.createObjectURL()`.
+         */
+        static revokeObjectURL(objectUrl: string): void;
+        constructor(input: string, base?: string | URL);
+        /**
+         * Gets and sets the fragment portion of the URL.
+         *
+         * ```js
+         * const myURL = new URL('https://example.org/foo#bar');
+         * console.log(myURL.hash);
+         * // Prints #bar
+         *
+         * myURL.hash = 'baz';
+         * console.log(myURL.href);
+         * // Prints https://example.org/foo#baz
+         * ```
+         *
+         * Invalid URL characters included in the value assigned to the `hash` property
+         * are `percent-encoded`. The selection of which characters to
+         * percent-encode may vary somewhat from what the {@link parse} and {@link format} methods would produce.
+         */
+        hash: string;
+        /**
+         * Gets and sets the host portion of the URL.
+         *
+         * ```js
+         * const myURL = new URL('https://example.org:81/foo');
+         * console.log(myURL.host);
+         * // Prints example.org:81
+         *
+         * myURL.host = 'example.com:82';
+         * console.log(myURL.href);
+         * // Prints https://example.com:82/foo
+         * ```
+         *
+         * Invalid host values assigned to the `host` property are ignored.
+         */
+        host: string;
+        /**
+         * Gets and sets the host name portion of the URL. The key difference between`url.host` and `url.hostname` is that `url.hostname` does _not_ include the
+         * port.
+         *
+         * ```js
+         * const myURL = new URL('https://example.org:81/foo');
+         * console.log(myURL.hostname);
+         * // Prints example.org
+         *
+         * // Setting the hostname does not change the port
+         * myURL.hostname = 'example.com:82';
+         * console.log(myURL.href);
+         * // Prints https://example.com:81/foo
+         *
+         * // Use myURL.host to change the hostname and port
+         * myURL.host = 'example.org:82';
+         * console.log(myURL.href);
+         * // Prints https://example.org:82/foo
+         * ```
+         *
+         * Invalid host name values assigned to the `hostname` property are ignored.
+         */
+        hostname: string;
+        /**
+         * Gets and sets the serialized URL.
+         *
+         * ```js
+         * const myURL = new URL('https://example.org/foo');
+         * console.log(myURL.href);
+         * // Prints https://example.org/foo
+         *
+         * myURL.href = 'https://example.com/bar';
+         * console.log(myURL.href);
+         * // Prints https://example.com/bar
+         * ```
+         *
+         * Getting the value of the `href` property is equivalent to calling {@link toString}.
+         *
+         * Setting the value of this property to a new value is equivalent to creating a
+         * new `URL` object using `new URL(value)`. Each of the `URL`object's properties will be modified.
+         *
+         * If the value assigned to the `href` property is not a valid URL, a `TypeError`will be thrown.
+         */
+        href: string;
+        /**
+         * Gets the read-only serialization of the URL's origin.
+         *
+         * ```js
+         * const myURL = new URL('https://example.org/foo/bar?baz');
+         * console.log(myURL.origin);
+         * // Prints https://example.org
+         * ```
+         *
+         * ```js
+         * const idnURL = new URL('https://測試');
+         * console.log(idnURL.origin);
+         * // Prints https://xn--g6w251d
+         *
+         * console.log(idnURL.hostname);
+         * // Prints xn--g6w251d
+         * ```
+         */
+        readonly origin: string;
+        /**
+         * Gets and sets the password portion of the URL.
+         *
+         * ```js
+         * const myURL = new URL('https://abc:xyz@example.com');
+         * console.log(myURL.password);
+         * // Prints xyz
+         *
+         * myURL.password = '123';
+         * console.log(myURL.href);
+         * // Prints https://abc:123@example.com
+         * ```
+         *
+         * Invalid URL characters included in the value assigned to the `password` property
+         * are `percent-encoded`. The selection of which characters to
+         * percent-encode may vary somewhat from what the {@link parse} and {@link format} methods would produce.
+         */
+        password: string;
+        /**
+         * Gets and sets the path portion of the URL.
+         *
+         * ```js
+         * const myURL = new URL('https://example.org/abc/xyz?123');
+         * console.log(myURL.pathname);
+         * // Prints /abc/xyz
+         *
+         * myURL.pathname = '/abcdef';
+         * console.log(myURL.href);
+         * // Prints https://example.org/abcdef?123
+         * ```
+         *
+         * Invalid URL characters included in the value assigned to the `pathname`property are `percent-encoded`. The selection of which characters
+         * to percent-encode may vary somewhat from what the {@link parse} and {@link format} methods would produce.
+         */
+        pathname: string;
+        /**
+         * Gets and sets the port portion of the URL.
+         *
+         * The port value may be a number or a string containing a number in the range`0` to `65535` (inclusive). Setting the value to the default port of the`URL` objects given `protocol` will
+         * result in the `port` value becoming
+         * the empty string (`''`).
+         *
+         * The port value can be an empty string in which case the port depends on
+         * the protocol/scheme:
+         *
+         * <omitted>
+         *
+         * Upon assigning a value to the port, the value will first be converted to a
+         * string using `.toString()`.
+         *
+         * If that string is invalid but it begins with a number, the leading number is
+         * assigned to `port`.
+         * If the number lies outside the range denoted above, it is ignored.
+         *
+         * ```js
+         * const myURL = new URL('https://example.org:8888');
+         * console.log(myURL.port);
+         * // Prints 8888
+         *
+         * // Default ports are automatically transformed to the empty string
+         * // (HTTPS protocol's default port is 443)
+         * myURL.port = '443';
+         * console.log(myURL.port);
+         * // Prints the empty string
+         * console.log(myURL.href);
+         * // Prints https://example.org/
+         *
+         * myURL.port = 1234;
+         * console.log(myURL.port);
+         * // Prints 1234
+         * console.log(myURL.href);
+         * // Prints https://example.org:1234/
+         *
+         * // Completely invalid port strings are ignored
+         * myURL.port = 'abcd';
+         * console.log(myURL.port);
+         * // Prints 1234
+         *
+         * // Leading numbers are treated as a port number
+         * myURL.port = '5678abcd';
+         * console.log(myURL.port);
+         * // Prints 5678
+         *
+         * // Non-integers are truncated
+         * myURL.port = 1234.5678;
+         * console.log(myURL.port);
+         * // Prints 1234
+         *
+         * // Out-of-range numbers which are not represented in scientific notation
+         * // will be ignored.
+         * myURL.port = 1e10; // 10000000000, will be range-checked as described below
+         * console.log(myURL.port);
+         * // Prints 1234
+         * ```
+         *
+         * Numbers which contain a decimal point,
+         * such as floating-point numbers or numbers in scientific notation,
+         * are not an exception to this rule.
+         * Leading numbers up to the decimal point will be set as the URL's port,
+         * assuming they are valid:
+         *
+         * ```js
+         * myURL.port = 4.567e21;
+         * console.log(myURL.port);
+         * // Prints 4 (because it is the leading number in the string '4.567e21')
+         * ```
+         */
+        port: string;
+        /**
+         * Gets and sets the protocol portion of the URL.
+         *
+         * ```js
+         * const myURL = new URL('https://example.org');
+         * console.log(myURL.protocol);
+         * // Prints https:
+         *
+         * myURL.protocol = 'ftp';
+         * console.log(myURL.href);
+         * // Prints ftp://example.org/
+         * ```
+         *
+         * Invalid URL protocol values assigned to the `protocol` property are ignored.
+         */
+        protocol: string;
+        /**
+         * Gets and sets the serialized query portion of the URL.
+         *
+         * ```js
+         * const myURL = new URL('https://example.org/abc?123');
+         * console.log(myURL.search);
+         * // Prints ?123
+         *
+         * myURL.search = 'abc=xyz';
+         * console.log(myURL.href);
+         * // Prints https://example.org/abc?abc=xyz
+         * ```
+         *
+         * Any invalid URL characters appearing in the value assigned the `search`property will be `percent-encoded`. The selection of which
+         * characters to percent-encode may vary somewhat from what the {@link parse} and {@link format} methods would produce.
+         */
+        search: string;
+        /**
+         * Gets the `URLSearchParams` object representing the query parameters of the
+         * URL. This property is read-only but the `URLSearchParams` object it provides
+         * can be used to mutate the URL instance; to replace the entirety of query
+         * parameters of the URL, use the {@link search} setter. See `URLSearchParams` documentation for details.
+         *
+         * Use care when using `.searchParams` to modify the `URL` because,
+         * per the WHATWG specification, the `URLSearchParams` object uses
+         * different rules to determine which characters to percent-encode. For
+         * instance, the `URL` object will not percent encode the ASCII tilde (`~`)
+         * character, while `URLSearchParams` will always encode it:
+         *
+         * ```js
+         * const myUrl = new URL('https://example.org/abc?foo=~bar');
+         *
+         * console.log(myUrl.search);  // prints ?foo=~bar
+         *
+         * // Modify the URL via searchParams...
+         * myUrl.searchParams.sort();
+         *
+         * console.log(myUrl.search);  // prints ?foo=%7Ebar
+         * ```
+         */
+        readonly searchParams: URLSearchParams;
+        /**
+         * Gets and sets the username portion of the URL.
+         *
+         * ```js
+         * const myURL = new URL('https://abc:xyz@example.com');
+         * console.log(myURL.username);
+         * // Prints abc
+         *
+         * myURL.username = '123';
+         * console.log(myURL.href);
+         * // Prints https://123:xyz@example.com/
+         * ```
+         *
+         * Any invalid URL characters appearing in the value assigned the `username`property will be `percent-encoded`. The selection of which
+         * characters to percent-encode may vary somewhat from what the {@link parse} and {@link format} methods would produce.
+         */
+        username: string;
+        /**
+         * The `toString()` method on the `URL` object returns the serialized URL. The
+         * value returned is equivalent to that of {@link href} and {@link toJSON}.
+         */
+        toString(): string;
+        /**
+         * The `toJSON()` method on the `URL` object returns the serialized URL. The
+         * value returned is equivalent to that of {@link href} and {@link toString}.
+         *
+         * This method is automatically called when an `URL` object is serialized
+         * with [`JSON.stringify()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON/stringify).
+         *
+         * ```js
+         * const myURLs = [
+         *   new URL('https://www.example.com'),
+         *   new URL('https://test.example.org'),
+         * ];
+         * console.log(JSON.stringify(myURLs));
+         * // Prints ["https://www.example.com/","https://test.example.org/"]
+         * ```
+         */
+        toJSON(): string;
+    }
+    /**
+     * The `URLSearchParams` API provides read and write access to the query of a`URL`. The `URLSearchParams` class can also be used standalone with one of the
+     * four following constructors.
+     * The `URLSearchParams` class is also available on the global object.
+     *
+     * The WHATWG `URLSearchParams` interface and the `querystring` module have
+     * similar purpose, but the purpose of the `querystring` module is more
+     * general, as it allows the customization of delimiter characters (`&#x26;` and `=`).
+     * On the other hand, this API is designed purely for URL query strings.
+     *
+     * ```js
+     * const myURL = new URL('https://example.org/?abc=123');
+     * console.log(myURL.searchParams.get('abc'));
+     * // Prints 123
+     *
+     * myURL.searchParams.append('abc', 'xyz');
+     * console.log(myURL.href);
+     * // Prints https://example.org/?abc=123&#x26;abc=xyz
+     *
+     * myURL.searchParams.delete('abc');
+     * myURL.searchParams.set('a', 'b');
+     * console.log(myURL.href);
+     * // Prints https://example.org/?a=b
+     *
+     * const newSearchParams = new URLSearchParams(myURL.searchParams);
+     * // The above is equivalent to
+     * // const newSearchParams = new URLSearchParams(myURL.search);
+     *
+     * newSearchParams.append('a', 'c');
+     * console.log(myURL.href);
+     * // Prints https://example.org/?a=b
+     * console.log(newSearchParams.toString());
+     * // Prints a=b&#x26;a=c
+     *
+     * // newSearchParams.toString() is implicitly called
+     * myURL.search = newSearchParams;
+     * console.log(myURL.href);
+     * // Prints https://example.org/?a=b&#x26;a=c
+     * newSearchParams.delete('a');
+     * console.log(myURL.href);
+     * // Prints https://example.org/?a=b&#x26;a=c
+     * ```
+     * @since v7.5.0, v6.13.0
+     */
+    class URLSearchParams implements Iterable<[string, string]> {
+        constructor(init?: URLSearchParams | string | Record<string, string | ReadonlyArray<string>> | Iterable<[string, string]> | ReadonlyArray<[string, string]>);
+        /**
+         * Append a new name-value pair to the query string.
+         */
+        append(name: string, value: string): void;
+        /**
+         * Remove all name-value pairs whose name is `name`.
+         */
+        delete(name: string): void;
+        /**
+         * Returns an ES6 `Iterator` over each of the name-value pairs in the query.
+         * Each item of the iterator is a JavaScript `Array`. The first item of the `Array`is the `name`, the second item of the `Array` is the `value`.
+         *
+         * Alias for `urlSearchParams[@@iterator]()`.
+         */
+        entries(): IterableIterator<[string, string]>;
+        /**
+         * Iterates over each name-value pair in the query and invokes the given function.
+         *
+         * ```js
+         * const myURL = new URL('https://example.org/?a=b&#x26;c=d');
+         * myURL.searchParams.forEach((value, name, searchParams) => {
+         *   console.log(name, value, myURL.searchParams === searchParams);
+         * });
+         * // Prints:
+         * //   a b true
+         * //   c d true
+         * ```
+         * @param fn Invoked for each name-value pair in the query
+         * @param thisArg To be used as `this` value for when `fn` is called
+         */
+        forEach<TThis = this>(callback: (this: TThis, value: string, name: string, searchParams: this) => void, thisArg?: TThis): void;
+        /**
+         * Returns the value of the first name-value pair whose name is `name`. If there
+         * are no such pairs, `null` is returned.
+         * @return or `null` if there is no name-value pair with the given `name`.
+         */
+        get(name: string): string | null;
+        /**
+         * Returns the values of all name-value pairs whose name is `name`. If there are
+         * no such pairs, an empty array is returned.
+         */
+        getAll(name: string): string[];
+        /**
+         * Returns `true` if there is at least one name-value pair whose name is `name`.
+         */
+        has(name: string): boolean;
+        /**
+         * Returns an ES6 `Iterator` over the names of each name-value pair.
+         *
+         * ```js
+         * const params = new URLSearchParams('foo=bar&#x26;foo=baz');
+         * for (const name of params.keys()) {
+         *   console.log(name);
+         * }
+         * // Prints:
+         * //   foo
+         * //   foo
+         * ```
+         */
+        keys(): IterableIterator<string>;
+        /**
+         * Sets the value in the `URLSearchParams` object associated with `name` to`value`. If there are any pre-existing name-value pairs whose names are `name`,
+         * set the first such pair's value to `value` and remove all others. If not,
+         * append the name-value pair to the query string.
+         *
+         * ```js
+         * const params = new URLSearchParams();
+         * params.append('foo', 'bar');
+         * params.append('foo', 'baz');
+         * params.append('abc', 'def');
+         * console.log(params.toString());
+         * // Prints foo=bar&#x26;foo=baz&#x26;abc=def
+         *
+         * params.set('foo', 'def');
+         * params.set('xyz', 'opq');
+         * console.log(params.toString());
+         * // Prints foo=def&#x26;abc=def&#x26;xyz=opq
+         * ```
+         */
+        set(name: string, value: string): void;
+        /**
+         * Sort all existing name-value pairs in-place by their names. Sorting is done
+         * with a [stable sorting algorithm](https://en.wikipedia.org/wiki/Sorting_algorithm#Stability), so relative order between name-value pairs
+         * with the same name is preserved.
+         *
+         * This method can be used, in particular, to increase cache hits.
+         *
+         * ```js
+         * const params = new URLSearchParams('query[]=abc&#x26;type=search&#x26;query[]=123');
+         * params.sort();
+         * console.log(params.toString());
+         * // Prints query%5B%5D=abc&#x26;query%5B%5D=123&#x26;type=search
+         * ```
+         * @since v7.7.0, v6.13.0
+         */
+        sort(): void;
+        /**
+         * Returns the search parameters serialized as a string, with characters
+         * percent-encoded where necessary.
+         */
+        toString(): string;
+        /**
+         * Returns an ES6 `Iterator` over the values of each name-value pair.
+         */
+        values(): IterableIterator<string>;
+        [Symbol.iterator](): IterableIterator<[string, string]>;
+    }
+}
+declare module 'node:url' {
+    export * from 'url';
+}

backend/node_modules/@types/node/v8.d.ts

@@ -0,0 +1,378 @@
+/**
+ * The `v8` module exposes APIs that are specific to the version of [V8](https://developers.google.com/v8/) built into the Node.js binary. It can be accessed using:
+ *
+ * ```js
+ * const v8 = require('v8');
+ * ```
+ * @see [source](https://github.com/nodejs/node/blob/v17.0.0/lib/v8.js)
+ */
+declare module 'v8' {
+    import { Readable } from 'node:stream';
+    interface HeapSpaceInfo {
+        space_name: string;
+        space_size: number;
+        space_used_size: number;
+        space_available_size: number;
+        physical_space_size: number;
+    }
+    // ** Signifies if the --zap_code_space option is enabled or not.  1 == enabled, 0 == disabled. */
+    type DoesZapCodeSpaceFlag = 0 | 1;
+    interface HeapInfo {
+        total_heap_size: number;
+        total_heap_size_executable: number;
+        total_physical_size: number;
+        total_available_size: number;
+        used_heap_size: number;
+        heap_size_limit: number;
+        malloced_memory: number;
+        peak_malloced_memory: number;
+        does_zap_garbage: DoesZapCodeSpaceFlag;
+        number_of_native_contexts: number;
+        number_of_detached_contexts: number;
+    }
+    interface HeapCodeStatistics {
+        code_and_metadata_size: number;
+        bytecode_and_metadata_size: number;
+        external_script_source_size: number;
+    }
+    /**
+     * Returns an integer representing a version tag derived from the V8 version,
+     * command-line flags, and detected CPU features. This is useful for determining
+     * whether a `vm.Script` `cachedData` buffer is compatible with this instance
+     * of V8.
+     *
+     * ```js
+     * console.log(v8.cachedDataVersionTag()); // 3947234607
+     * // The value returned by v8.cachedDataVersionTag() is derived from the V8
+     * // version, command-line flags, and detected CPU features. Test that the value
+     * // does indeed update when flags are toggled.
+     * v8.setFlagsFromString('--allow_natives_syntax');
+     * console.log(v8.cachedDataVersionTag()); // 183726201
+     * ```
+     * @since v8.0.0
+     */
+    function cachedDataVersionTag(): number;
+    /**
+     * Returns an object with the following properties:
+     *
+     * `does_zap_garbage` is a 0/1 boolean, which signifies whether the`--zap_code_space` option is enabled or not. This makes V8 overwrite heap
+     * garbage with a bit pattern. The RSS footprint (resident set size) gets bigger
+     * because it continuously touches all heap pages and that makes them less likely
+     * to get swapped out by the operating system.
+     *
+     * `number_of_native_contexts` The value of native\_context is the number of the
+     * top-level contexts currently active. Increase of this number over time indicates
+     * a memory leak.
+     *
+     * `number_of_detached_contexts` The value of detached\_context is the number
+     * of contexts that were detached and not yet garbage collected. This number
+     * being non-zero indicates a potential memory leak.
+     *
+     * ```js
+     * {
+     *   total_heap_size: 7326976,
+     *   total_heap_size_executable: 4194304,
+     *   total_physical_size: 7326976,
+     *   total_available_size: 1152656,
+     *   used_heap_size: 3476208,
+     *   heap_size_limit: 1535115264,
+     *   malloced_memory: 16384,
+     *   peak_malloced_memory: 1127496,
+     *   does_zap_garbage: 0,
+     *   number_of_native_contexts: 1,
+     *   number_of_detached_contexts: 0
+     * }
+     * ```
+     * @since v1.0.0
+     */
+    function getHeapStatistics(): HeapInfo;
+    /**
+     * Returns statistics about the V8 heap spaces, i.e. the segments which make up
+     * the V8 heap. Neither the ordering of heap spaces, nor the availability of a
+     * heap space can be guaranteed as the statistics are provided via the
+     * V8[`GetHeapSpaceStatistics`](https://v8docs.nodesource.com/node-13.2/d5/dda/classv8_1_1_isolate.html#ac673576f24fdc7a33378f8f57e1d13a4) function and may change from one V8 version to the
+     * next.
+     *
+     * The value returned is an array of objects containing the following properties:
+     *
+     * ```json
+     * [
+     *   {
+     *     "space_name": "new_space",
+     *     "space_size": 2063872,
+     *     "space_used_size": 951112,
+     *     "space_available_size": 80824,
+     *     "physical_space_size": 2063872
+     *   },
+     *   {
+     *     "space_name": "old_space",
+     *     "space_size": 3090560,
+     *     "space_used_size": 2493792,
+     *     "space_available_size": 0,
+     *     "physical_space_size": 3090560
+     *   },
+     *   {
+     *     "space_name": "code_space",
+     *     "space_size": 1260160,
+     *     "space_used_size": 644256,
+     *     "space_available_size": 960,
+     *     "physical_space_size": 1260160
+     *   },
+     *   {
+     *     "space_name": "map_space",
+     *     "space_size": 1094160,
+     *     "space_used_size": 201608,
+     *     "space_available_size": 0,
+     *     "physical_space_size": 1094160
+     *   },
+     *   {
+     *     "space_name": "large_object_space",
+     *     "space_size": 0,
+     *     "space_used_size": 0,
+     *     "space_available_size": 1490980608,
+     *     "physical_space_size": 0
+     *   }
+     * ]
+     * ```
+     * @since v6.0.0
+     */
+    function getHeapSpaceStatistics(): HeapSpaceInfo[];
+    /**
+     * The `v8.setFlagsFromString()` method can be used to programmatically set
+     * V8 command-line flags. This method should be used with care. Changing settings
+     * after the VM has started may result in unpredictable behavior, including
+     * crashes and data loss; or it may simply do nothing.
+     *
+     * The V8 options available for a version of Node.js may be determined by running`node --v8-options`.
+     *
+     * Usage:
+     *
+     * ```js
+     * // Print GC events to stdout for one minute.
+     * const v8 = require('v8');
+     * v8.setFlagsFromString('--trace_gc');
+     * setTimeout(() => { v8.setFlagsFromString('--notrace_gc'); }, 60e3);
+     * ```
+     * @since v1.0.0
+     */
+    function setFlagsFromString(flags: string): void;
+    /**
+     * Generates a snapshot of the current V8 heap and returns a Readable
+     * Stream that may be used to read the JSON serialized representation.
+     * This JSON stream format is intended to be used with tools such as
+     * Chrome DevTools. The JSON schema is undocumented and specific to the
+     * V8 engine. Therefore, the schema may change from one version of V8 to the next.
+     *
+     * ```js
+     * // Print heap snapshot to the console
+     * const v8 = require('v8');
+     * const stream = v8.getHeapSnapshot();
+     * stream.pipe(process.stdout);
+     * ```
+     * @since v11.13.0
+     * @return A Readable Stream containing the V8 heap snapshot
+     */
+    function getHeapSnapshot(): Readable;
+    /**
+     * Generates a snapshot of the current V8 heap and writes it to a JSON
+     * file. This file is intended to be used with tools such as Chrome
+     * DevTools. The JSON schema is undocumented and specific to the V8
+     * engine, and may change from one version of V8 to the next.
+     *
+     * A heap snapshot is specific to a single V8 isolate. When using `worker threads`, a heap snapshot generated from the main thread will
+     * not contain any information about the workers, and vice versa.
+     *
+     * ```js
+     * const { writeHeapSnapshot } = require('v8');
+     * const {
+     *   Worker,
+     *   isMainThread,
+     *   parentPort
+     * } = require('worker_threads');
+     *
+     * if (isMainThread) {
+     *   const worker = new Worker(__filename);
+     *
+     *   worker.once('message', (filename) => {
+     *     console.log(`worker heapdump: ${filename}`);
+     *     // Now get a heapdump for the main thread.
+     *     console.log(`main thread heapdump: ${writeHeapSnapshot()}`);
+     *   });
+     *
+     *   // Tell the worker to create a heapdump.
+     *   worker.postMessage('heapdump');
+     * } else {
+     *   parentPort.once('message', (message) => {
+     *     if (message === 'heapdump') {
+     *       // Generate a heapdump for the worker
+     *       // and return the filename to the parent.
+     *       parentPort.postMessage(writeHeapSnapshot());
+     *     }
+     *   });
+     * }
+     * ```
+     * @since v11.13.0
+     * @param filename The file path where the V8 heap snapshot is to be saved. If not specified, a file name with the pattern `'Heap-${yyyymmdd}-${hhmmss}-${pid}-${thread_id}.heapsnapshot'` will be
+     * generated, where `{pid}` will be the PID of the Node.js process, `{thread_id}` will be `0` when `writeHeapSnapshot()` is called from the main Node.js thread or the id of a
+     * worker thread.
+     * @return The filename where the snapshot was saved.
+     */
+    function writeHeapSnapshot(filename?: string): string;
+    /**
+     * Returns an object with the following properties:
+     *
+     * ```js
+     * {
+     *   code_and_metadata_size: 212208,
+     *   bytecode_and_metadata_size: 161368,
+     *   external_script_source_size: 1410794
+     * }
+     * ```
+     * @since v12.8.0
+     */
+    function getHeapCodeStatistics(): HeapCodeStatistics;
+    /**
+     * @since v8.0.0
+     */
+    class Serializer {
+        /**
+         * Writes out a header, which includes the serialization format version.
+         */
+        writeHeader(): void;
+        /**
+         * Serializes a JavaScript value and adds the serialized representation to the
+         * internal buffer.
+         *
+         * This throws an error if `value` cannot be serialized.
+         */
+        writeValue(val: any): boolean;
+        /**
+         * Returns the stored internal buffer. This serializer should not be used once
+         * the buffer is released. Calling this method results in undefined behavior
+         * if a previous write has failed.
+         */
+        releaseBuffer(): Buffer;
+        /**
+         * Marks an `ArrayBuffer` as having its contents transferred out of band.
+         * Pass the corresponding `ArrayBuffer` in the deserializing context to `deserializer.transferArrayBuffer()`.
+         * @param id A 32-bit unsigned integer.
+         * @param arrayBuffer An `ArrayBuffer` instance.
+         */
+        transferArrayBuffer(id: number, arrayBuffer: ArrayBuffer): void;
+        /**
+         * Write a raw 32-bit unsigned integer.
+         * For use inside of a custom `serializer._writeHostObject()`.
+         */
+        writeUint32(value: number): void;
+        /**
+         * Write a raw 64-bit unsigned integer, split into high and low 32-bit parts.
+         * For use inside of a custom `serializer._writeHostObject()`.
+         */
+        writeUint64(hi: number, lo: number): void;
+        /**
+         * Write a JS `number` value.
+         * For use inside of a custom `serializer._writeHostObject()`.
+         */
+        writeDouble(value: number): void;
+        /**
+         * Write raw bytes into the serializer’s internal buffer. The deserializer
+         * will require a way to compute the length of the buffer.
+         * For use inside of a custom `serializer._writeHostObject()`.
+         */
+        writeRawBytes(buffer: NodeJS.TypedArray): void;
+    }
+    /**
+     * A subclass of `Serializer` that serializes `TypedArray`(in particular `Buffer`) and `DataView` objects as host objects, and only
+     * stores the part of their underlying `ArrayBuffer`s that they are referring to.
+     * @since v8.0.0
+     */
+    class DefaultSerializer extends Serializer {}
+    /**
+     * @since v8.0.0
+     */
+    class Deserializer {
+        constructor(data: NodeJS.TypedArray);
+        /**
+         * Reads and validates a header (including the format version).
+         * May, for example, reject an invalid or unsupported wire format. In that case,
+         * an `Error` is thrown.
+         */
+        readHeader(): boolean;
+        /**
+         * Deserializes a JavaScript value from the buffer and returns it.
+         */
+        readValue(): any;
+        /**
+         * Marks an `ArrayBuffer` as having its contents transferred out of band.
+         * Pass the corresponding `ArrayBuffer` in the serializing context to `serializer.transferArrayBuffer()` (or return the `id` from `serializer._getSharedArrayBufferId()` in the case of
+         * `SharedArrayBuffer`s).
+         * @param id A 32-bit unsigned integer.
+         * @param arrayBuffer An `ArrayBuffer` instance.
+         */
+        transferArrayBuffer(id: number, arrayBuffer: ArrayBuffer): void;
+        /**
+         * Reads the underlying wire format version. Likely mostly to be useful to
+         * legacy code reading old wire format versions. May not be called before`.readHeader()`.
+         */
+        getWireFormatVersion(): number;
+        /**
+         * Read a raw 32-bit unsigned integer and return it.
+         * For use inside of a custom `deserializer._readHostObject()`.
+         */
+        readUint32(): number;
+        /**
+         * Read a raw 64-bit unsigned integer and return it as an array `[hi, lo]`with two 32-bit unsigned integer entries.
+         * For use inside of a custom `deserializer._readHostObject()`.
+         */
+        readUint64(): [number, number];
+        /**
+         * Read a JS `number` value.
+         * For use inside of a custom `deserializer._readHostObject()`.
+         */
+        readDouble(): number;
+        /**
+         * Read raw bytes from the deserializer’s internal buffer. The `length` parameter
+         * must correspond to the length of the buffer that was passed to `serializer.writeRawBytes()`.
+         * For use inside of a custom `deserializer._readHostObject()`.
+         */
+        readRawBytes(length: number): Buffer;
+    }
+    /**
+     * A subclass of `Deserializer` corresponding to the format written by `DefaultSerializer`.
+     * @since v8.0.0
+     */
+    class DefaultDeserializer extends Deserializer {}
+    /**
+     * Uses a `DefaultSerializer` to serialize `value` into a buffer.
+     * @since v8.0.0
+     */
+    function serialize(value: any): Buffer;
+    /**
+     * Uses a `DefaultDeserializer` with default options to read a JS value
+     * from a buffer.
+     * @since v8.0.0
+     * @param buffer A buffer returned by {@link serialize}.
+     */
+    function deserialize(buffer: NodeJS.TypedArray): any;
+    /**
+     * The `v8.takeCoverage()` method allows the user to write the coverage started by `NODE_V8_COVERAGE` to disk on demand. This method can be invoked multiple
+     * times during the lifetime of the process. Each time the execution counter will
+     * be reset and a new coverage report will be written to the directory specified
+     * by `NODE_V8_COVERAGE`.
+     *
+     * When the process is about to exit, one last coverage will still be written to
+     * disk unless {@link stopCoverage} is invoked before the process exits.
+     * @since v15.1.0, v14.18.0, v12.22.0
+     */
+    function takeCoverage(): void;
+    /**
+     * The `v8.stopCoverage()` method allows the user to stop the coverage collection
+     * started by `NODE_V8_COVERAGE`, so that V8 can release the execution count
+     * records and optimize code. This can be used in conjunction with {@link takeCoverage} if the user wants to collect the coverage on demand.
+     * @since v15.1.0, v14.18.0, v12.22.0
+     */
+    function stopCoverage(): void;
+}
+declare module 'node:v8' {
+    export * from 'v8';
+}

backend/node_modules/@types/node/vm.d.ts

@@ -0,0 +1,507 @@
+/**
+ * The `vm` module enables compiling and running code within V8 Virtual
+ * Machine contexts. **The `vm` module is not a security mechanism. Do**
+ * **not use it to run untrusted code.**
+ *
+ * JavaScript code can be compiled and run immediately or
+ * compiled, saved, and run later.
+ *
+ * A common use case is to run the code in a different V8 Context. This means
+ * invoked code has a different global object than the invoking code.
+ *
+ * One can provide the context by `contextifying` an
+ * object. The invoked code treats any property in the context like a
+ * global variable. Any changes to global variables caused by the invoked
+ * code are reflected in the context object.
+ *
+ * ```js
+ * const vm = require('vm');
+ *
+ * const x = 1;
+ *
+ * const context = { x: 2 };
+ * vm.createContext(context); // Contextify the object.
+ *
+ * const code = 'x += 40; var y = 17;';
+ * // `x` and `y` are global variables in the context.
+ * // Initially, x has the value 2 because that is the value of context.x.
+ * vm.runInContext(code, context);
+ *
+ * console.log(context.x); // 42
+ * console.log(context.y); // 17
+ *
+ * console.log(x); // 1; y is not defined.
+ * ```
+ * @see [source](https://github.com/nodejs/node/blob/v17.0.0/lib/vm.js)
+ */
+declare module 'vm' {
+    interface Context extends NodeJS.Dict<any> {}
+    interface BaseOptions {
+        /**
+         * Specifies the filename used in stack traces produced by this script.
+         * Default: `''`.
+         */
+        filename?: string | undefined;
+        /**
+         * Specifies the line number offset that is displayed in stack traces produced by this script.
+         * Default: `0`.
+         */
+        lineOffset?: number | undefined;
+        /**
+         * Specifies the column number offset that is displayed in stack traces produced by this script.
+         * @default 0
+         */
+        columnOffset?: number | undefined;
+    }
+    interface ScriptOptions extends BaseOptions {
+        displayErrors?: boolean | undefined;
+        timeout?: number | undefined;
+        cachedData?: Buffer | undefined;
+        /** @deprecated in favor of `script.createCachedData()` */
+        produceCachedData?: boolean | undefined;
+    }
+    interface RunningScriptOptions extends BaseOptions {
+        /**
+         * When `true`, if an `Error` occurs while compiling the `code`, the line of code causing the error is attached to the stack trace.
+         * Default: `true`.
+         */
+        displayErrors?: boolean | undefined;
+        /**
+         * Specifies the number of milliseconds to execute code before terminating execution.
+         * If execution is terminated, an `Error` will be thrown. This value must be a strictly positive integer.
+         */
+        timeout?: number | undefined;
+        /**
+         * If `true`, the execution will be terminated when `SIGINT` (Ctrl+C) is received.
+         * Existing handlers for the event that have been attached via `process.on('SIGINT')` will be disabled during script execution, but will continue to work after that.
+         * If execution is terminated, an `Error` will be thrown.
+         * Default: `false`.
+         */
+        breakOnSigint?: boolean | undefined;
+        /**
+         * If set to `afterEvaluate`, microtasks will be run immediately after the script has run.
+         */
+        microtaskMode?: 'afterEvaluate' | undefined;
+    }
+    interface CompileFunctionOptions extends BaseOptions {
+        /**
+         * Provides an optional data with V8's code cache data for the supplied source.
+         */
+        cachedData?: Buffer | undefined;
+        /**
+         * Specifies whether to produce new cache data.
+         * Default: `false`,
+         */
+        produceCachedData?: boolean | undefined;
+        /**
+         * The sandbox/context in which the said function should be compiled in.
+         */
+        parsingContext?: Context | undefined;
+        /**
+         * An array containing a collection of context extensions (objects wrapping the current scope) to be applied while compiling
+         */
+        contextExtensions?: Object[] | undefined;
+    }
+    interface CreateContextOptions {
+        /**
+         * Human-readable name of the newly created context.
+         * @default 'VM Context i' Where i is an ascending numerical index of the created context.
+         */
+        name?: string | undefined;
+        /**
+         * Corresponds to the newly created context for display purposes.
+         * The origin should be formatted like a `URL`, but with only the scheme, host, and port (if necessary),
+         * like the value of the `url.origin` property of a URL object.
+         * Most notably, this string should omit the trailing slash, as that denotes a path.
+         * @default ''
+         */
+        origin?: string | undefined;
+        codeGeneration?:
+            | {
+                  /**
+                   * If set to false any calls to eval or function constructors (Function, GeneratorFunction, etc)
+                   * will throw an EvalError.
+                   * @default true
+                   */
+                  strings?: boolean | undefined;
+                  /**
+                   * If set to false any attempt to compile a WebAssembly module will throw a WebAssembly.CompileError.
+                   * @default true
+                   */
+                  wasm?: boolean | undefined;
+              }
+            | undefined;
+        /**
+         * If set to `afterEvaluate`, microtasks will be run immediately after the script has run.
+         */
+        microtaskMode?: 'afterEvaluate' | undefined;
+    }
+    type MeasureMemoryMode = 'summary' | 'detailed';
+    interface MeasureMemoryOptions {
+        /**
+         * @default 'summary'
+         */
+        mode?: MeasureMemoryMode | undefined;
+        context?: Context | undefined;
+    }
+    interface MemoryMeasurement {
+        total: {
+            jsMemoryEstimate: number;
+            jsMemoryRange: [number, number];
+        };
+    }
+    /**
+     * Instances of the `vm.Script` class contain precompiled scripts that can be
+     * executed in specific contexts.
+     * @since v0.3.1
+     */
+    class Script {
+        constructor(code: string, options?: ScriptOptions);
+        /**
+         * Runs the compiled code contained by the `vm.Script` object within the given`contextifiedObject` and returns the result. Running code does not have access
+         * to local scope.
+         *
+         * The following example compiles code that increments a global variable, sets
+         * the value of another global variable, then execute the code multiple times.
+         * The globals are contained in the `context` object.
+         *
+         * ```js
+         * const vm = require('vm');
+         *
+         * const context = {
+         *   animal: 'cat',
+         *   count: 2
+         * };
+         *
+         * const script = new vm.Script('count += 1; name = "kitty";');
+         *
+         * vm.createContext(context);
+         * for (let i = 0; i < 10; ++i) {
+         *   script.runInContext(context);
+         * }
+         *
+         * console.log(context);
+         * // Prints: { animal: 'cat', count: 12, name: 'kitty' }
+         * ```
+         *
+         * Using the `timeout` or `breakOnSigint` options will result in new event loops
+         * and corresponding threads being started, which have a non-zero performance
+         * overhead.
+         * @since v0.3.1
+         * @param contextifiedObject A `contextified` object as returned by the `vm.createContext()` method.
+         * @return the result of the very last statement executed in the script.
+         */
+        runInContext(contextifiedObject: Context, options?: RunningScriptOptions): any;
+        /**
+         * First contextifies the given `contextObject`, runs the compiled code contained
+         * by the `vm.Script` object within the created context, and returns the result.
+         * Running code does not have access to local scope.
+         *
+         * The following example compiles code that sets a global variable, then executes
+         * the code multiple times in different contexts. The globals are set on and
+         * contained within each individual `context`.
+         *
+         * ```js
+         * const vm = require('vm');
+         *
+         * const script = new vm.Script('globalVar = "set"');
+         *
+         * const contexts = [{}, {}, {}];
+         * contexts.forEach((context) => {
+         *   script.runInNewContext(context);
+         * });
+         *
+         * console.log(contexts);
+         * // Prints: [{ globalVar: 'set' }, { globalVar: 'set' }, { globalVar: 'set' }]
+         * ```
+         * @since v0.3.1
+         * @param contextObject An object that will be `contextified`. If `undefined`, a new object will be created.
+         * @return the result of the very last statement executed in the script.
+         */
+        runInNewContext(contextObject?: Context, options?: RunningScriptOptions): any;
+        /**
+         * Runs the compiled code contained by the `vm.Script` within the context of the
+         * current `global` object. Running code does not have access to local scope, but_does_ have access to the current `global` object.
+         *
+         * The following example compiles code that increments a `global` variable then
+         * executes that code multiple times:
+         *
+         * ```js
+         * const vm = require('vm');
+         *
+         * global.globalVar = 0;
+         *
+         * const script = new vm.Script('globalVar += 1', { filename: 'myfile.vm' });
+         *
+         * for (let i = 0; i < 1000; ++i) {
+         *   script.runInThisContext();
+         * }
+         *
+         * console.log(globalVar);
+         *
+         * // 1000
+         * ```
+         * @since v0.3.1
+         * @return the result of the very last statement executed in the script.
+         */
+        runInThisContext(options?: RunningScriptOptions): any;
+        /**
+         * Creates a code cache that can be used with the `Script` constructor's`cachedData` option. Returns a `Buffer`. This method may be called at any
+         * time and any number of times.
+         *
+         * ```js
+         * const script = new vm.Script(`
+         * function add(a, b) {
+         *   return a + b;
+         * }
+         *
+         * const x = add(1, 2);
+         * `);
+         *
+         * const cacheWithoutX = script.createCachedData();
+         *
+         * script.runInThisContext();
+         *
+         * const cacheWithX = script.createCachedData();
+         * ```
+         * @since v10.6.0
+         */
+        createCachedData(): Buffer;
+        /** @deprecated in favor of `script.createCachedData()` */
+        cachedDataProduced?: boolean | undefined;
+        cachedDataRejected?: boolean | undefined;
+        cachedData?: Buffer | undefined;
+    }
+    /**
+     * If given a `contextObject`, the `vm.createContext()` method will `prepare
+     * that object` so that it can be used in calls to {@link runInContext} or `script.runInContext()`. Inside such scripts,
+     * the `contextObject` will be the global object, retaining all of its existing
+     * properties but also having the built-in objects and functions any standard [global object](https://es5.github.io/#x15.1) has. Outside of scripts run by the vm module, global variables
+     * will remain unchanged.
+     *
+     * ```js
+     * const vm = require('vm');
+     *
+     * global.globalVar = 3;
+     *
+     * const context = { globalVar: 1 };
+     * vm.createContext(context);
+     *
+     * vm.runInContext('globalVar *= 2;', context);
+     *
+     * console.log(context);
+     * // Prints: { globalVar: 2 }
+     *
+     * console.log(global.globalVar);
+     * // Prints: 3
+     * ```
+     *
+     * If `contextObject` is omitted (or passed explicitly as `undefined`), a new,
+     * empty `contextified` object will be returned.
+     *
+     * The `vm.createContext()` method is primarily useful for creating a single
+     * context that can be used to run multiple scripts. For instance, if emulating a
+     * web browser, the method can be used to create a single context representing a
+     * window's global object, then run all `<script>` tags together within that
+     * context.
+     *
+     * The provided `name` and `origin` of the context are made visible through the
+     * Inspector API.
+     * @since v0.3.1
+     * @return contextified object.
+     */
+    function createContext(sandbox?: Context, options?: CreateContextOptions): Context;
+    /**
+     * Returns `true` if the given `object` object has been `contextified` using {@link createContext}.
+     * @since v0.11.7
+     */
+    function isContext(sandbox: Context): boolean;
+    /**
+     * The `vm.runInContext()` method compiles `code`, runs it within the context of
+     * the `contextifiedObject`, then returns the result. Running code does not have
+     * access to the local scope. The `contextifiedObject` object _must_ have been
+     * previously `contextified` using the {@link createContext} method.
+     *
+     * If `options` is a string, then it specifies the filename.
+     *
+     * The following example compiles and executes different scripts using a single `contextified` object:
+     *
+     * ```js
+     * const vm = require('vm');
+     *
+     * const contextObject = { globalVar: 1 };
+     * vm.createContext(contextObject);
+     *
+     * for (let i = 0; i < 10; ++i) {
+     *   vm.runInContext('globalVar *= 2;', contextObject);
+     * }
+     * console.log(contextObject);
+     * // Prints: { globalVar: 1024 }
+     * ```
+     * @since v0.3.1
+     * @param code The JavaScript code to compile and run.
+     * @param contextifiedObject The `contextified` object that will be used as the `global` when the `code` is compiled and run.
+     * @return the result of the very last statement executed in the script.
+     */
+    function runInContext(code: string, contextifiedObject: Context, options?: RunningScriptOptions | string): any;
+    /**
+     * The `vm.runInNewContext()` first contextifies the given `contextObject` (or
+     * creates a new `contextObject` if passed as `undefined`), compiles the `code`,
+     * runs it within the created context, then returns the result. Running code
+     * does not have access to the local scope.
+     *
+     * If `options` is a string, then it specifies the filename.
+     *
+     * The following example compiles and executes code that increments a global
+     * variable and sets a new one. These globals are contained in the `contextObject`.
+     *
+     * ```js
+     * const vm = require('vm');
+     *
+     * const contextObject = {
+     *   animal: 'cat',
+     *   count: 2
+     * };
+     *
+     * vm.runInNewContext('count += 1; name = "kitty"', contextObject);
+     * console.log(contextObject);
+     * // Prints: { animal: 'cat', count: 3, name: 'kitty' }
+     * ```
+     * @since v0.3.1
+     * @param code The JavaScript code to compile and run.
+     * @param contextObject An object that will be `contextified`. If `undefined`, a new object will be created.
+     * @return the result of the very last statement executed in the script.
+     */
+    function runInNewContext(code: string, contextObject?: Context, options?: RunningScriptOptions | string): any;
+    /**
+     * `vm.runInThisContext()` compiles `code`, runs it within the context of the
+     * current `global` and returns the result. Running code does not have access to
+     * local scope, but does have access to the current `global` object.
+     *
+     * If `options` is a string, then it specifies the filename.
+     *
+     * The following example illustrates using both `vm.runInThisContext()` and
+     * the JavaScript [`eval()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/eval) function to run the same code:
+     *
+     * ```js
+     * const vm = require('vm');
+     * let localVar = 'initial value';
+     *
+     * const vmResult = vm.runInThisContext('localVar = "vm";');
+     * console.log(`vmResult: '${vmResult}', localVar: '${localVar}'`);
+     * // Prints: vmResult: 'vm', localVar: 'initial value'
+     *
+     * const evalResult = eval('localVar = "eval";');
+     * console.log(`evalResult: '${evalResult}', localVar: '${localVar}'`);
+     * // Prints: evalResult: 'eval', localVar: 'eval'
+     * ```
+     *
+     * Because `vm.runInThisContext()` does not have access to the local scope,`localVar` is unchanged. In contrast,
+     * [`eval()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/eval) _does_ have access to the
+     * local scope, so the value `localVar` is changed. In this way`vm.runInThisContext()` is much like an [indirect `eval()` call](https://es5.github.io/#x10.4.2), e.g.`(0,eval)('code')`.
+     *
+     * ## Example: Running an HTTP server within a VM
+     *
+     * When using either `script.runInThisContext()` or {@link runInThisContext}, the code is executed within the current V8 global
+     * context. The code passed to this VM context will have its own isolated scope.
+     *
+     * In order to run a simple web server using the `http` module the code passed to
+     * the context must either call `require('http')` on its own, or have a reference
+     * to the `http` module passed to it. For instance:
+     *
+     * ```js
+     * 'use strict';
+     * const vm = require('vm');
+     *
+     * const code = `
+     * ((require) => {
+     *   const http = require('http');
+     *
+     *   http.createServer((request, response) => {
+     *     response.writeHead(200, { 'Content-Type': 'text/plain' });
+     *     response.end('Hello World\\n');
+     *   }).listen(8124);
+     *
+     *   console.log('Server running at http://127.0.0.1:8124/');
+     * })`;
+     *
+     * vm.runInThisContext(code)(require);
+     * ```
+     *
+     * The `require()` in the above case shares the state with the context it is
+     * passed from. This may introduce risks when untrusted code is executed, e.g.
+     * altering objects in the context in unwanted ways.
+     * @since v0.3.1
+     * @param code The JavaScript code to compile and run.
+     * @return the result of the very last statement executed in the script.
+     */
+    function runInThisContext(code: string, options?: RunningScriptOptions | string): any;
+    /**
+     * Compiles the given code into the provided context (if no context is
+     * supplied, the current context is used), and returns it wrapped inside a
+     * function with the given `params`.
+     * @since v10.10.0
+     * @param code The body of the function to compile.
+     * @param params An array of strings containing all parameters for the function.
+     */
+    function compileFunction(code: string, params?: ReadonlyArray<string>, options?: CompileFunctionOptions): Function;
+    /**
+     * Measure the memory known to V8 and used by all contexts known to the
+     * current V8 isolate, or the main context.
+     *
+     * The format of the object that the returned Promise may resolve with is
+     * specific to the V8 engine and may change from one version of V8 to the next.
+     *
+     * The returned result is different from the statistics returned by`v8.getHeapSpaceStatistics()` in that `vm.measureMemory()` measure the
+     * memory reachable by each V8 specific contexts in the current instance of
+     * the V8 engine, while the result of `v8.getHeapSpaceStatistics()` measure
+     * the memory occupied by each heap space in the current V8 instance.
+     *
+     * ```js
+     * const vm = require('vm');
+     * // Measure the memory used by the main context.
+     * vm.measureMemory({ mode: 'summary' })
+     *   // This is the same as vm.measureMemory()
+     *   .then((result) => {
+     *     // The current format is:
+     *     // {
+     *     //   total: {
+     *     //      jsMemoryEstimate: 2418479, jsMemoryRange: [ 2418479, 2745799 ]
+     *     //    }
+     *     // }
+     *     console.log(result);
+     *   });
+     *
+     * const context = vm.createContext({ a: 1 });
+     * vm.measureMemory({ mode: 'detailed', execution: 'eager' })
+     *   .then((result) => {
+     *     // Reference the context here so that it won't be GC'ed
+     *     // until the measurement is complete.
+     *     console.log(context.a);
+     *     // {
+     *     //   total: {
+     *     //     jsMemoryEstimate: 2574732,
+     *     //     jsMemoryRange: [ 2574732, 2904372 ]
+     *     //   },
+     *     //   current: {
+     *     //     jsMemoryEstimate: 2438996,
+     *     //     jsMemoryRange: [ 2438996, 2768636 ]
+     *     //   },
+     *     //   other: [
+     *     //     {
+     *     //       jsMemoryEstimate: 135736,
+     *     //       jsMemoryRange: [ 135736, 465376 ]
+     *     //     }
+     *     //   ]
+     *     // }
+     *     console.log(result);
+     *   });
+     * ```
+     * @since v13.10.0
+     * @experimental
+     */
+    function measureMemory(options?: MeasureMemoryOptions): Promise<MemoryMeasurement>;
+}
+declare module 'node:vm' {
+    export * from 'vm';
+}

backend/node_modules/@types/node/wasi.d.ts

@@ -0,0 +1,158 @@
+/**
+ * The WASI API provides an implementation of the [WebAssembly System Interface](https://wasi.dev/) specification. WASI gives sandboxed WebAssembly applications access to the
+ * underlying operating system via a collection of POSIX-like functions.
+ *
+ * ```js
+ * import { readFile } from 'fs/promises';
+ * import { WASI } from 'wasi';
+ * import { argv, env } from 'process';
+ *
+ * const wasi = new WASI({
+ *   args: argv,
+ *   env,
+ *   preopens: {
+ *     '/sandbox': '/some/real/path/that/wasm/can/access'
+ *   }
+ * });
+ *
+ * // Some WASI binaries require:
+ * //   const importObject = { wasi_unstable: wasi.wasiImport };
+ * const importObject = { wasi_snapshot_preview1: wasi.wasiImport };
+ *
+ * const wasm = await WebAssembly.compile(
+ *   await readFile(new URL('./demo.wasm', import.meta.url))
+ * );
+ * const instance = await WebAssembly.instantiate(wasm, importObject);
+ *
+ * wasi.start(instance);
+ * ```
+ *
+ * To run the above example, create a new WebAssembly text format file named`demo.wat`:
+ *
+ * ```text
+ * (module
+ *     ;; Import the required fd_write WASI function which will write the given io vectors to stdout
+ *     ;; The function signature for fd_write is:
+ *     ;; (File Descriptor, *iovs, iovs_len, nwritten) -> Returns number of bytes written
+ *     (import "wasi_snapshot_preview1" "fd_write" (func $fd_write (param i32 i32 i32 i32) (result i32)))
+ *
+ *     (memory 1)
+ *     (export "memory" (memory 0))
+ *
+ *     ;; Write 'hello world\n' to memory at an offset of 8 bytes
+ *     ;; Note the trailing newline which is required for the text to appear
+ *     (data (i32.const 8) "hello world\n")
+ *
+ *     (func $main (export "_start")
+ *         ;; Creating a new io vector within linear memory
+ *         (i32.store (i32.const 0) (i32.const 8))  ;; iov.iov_base - This is a pointer to the start of the 'hello world\n' string
+ *         (i32.store (i32.const 4) (i32.const 12))  ;; iov.iov_len - The length of the 'hello world\n' string
+ *
+ *         (call $fd_write
+ *             (i32.const 1) ;; file_descriptor - 1 for stdout
+ *             (i32.const 0) ;; *iovs - The pointer to the iov array, which is stored at memory location 0
+ *             (i32.const 1) ;; iovs_len - We're printing 1 string stored in an iov - so one.
+ *             (i32.const 20) ;; nwritten - A place in memory to store the number of bytes written
+ *         )
+ *         drop ;; Discard the number of bytes written from the top of the stack
+ *     )
+ * )
+ * ```
+ *
+ * Use [wabt](https://github.com/WebAssembly/wabt) to compile `.wat` to `.wasm`
+ *
+ * ```console
+ * $ wat2wasm demo.wat
+ * ```
+ *
+ * The `--experimental-wasi-unstable-preview1` CLI argument is needed for this
+ * example to run.
+ * @experimental
+ * @see [source](https://github.com/nodejs/node/blob/v17.0.0/lib/wasi.js)
+ */
+declare module 'wasi' {
+    interface WASIOptions {
+        /**
+         * An array of strings that the WebAssembly application will
+         * see as command line arguments. The first argument is the virtual path to the
+         * WASI command itself.
+         */
+        args?: string[] | undefined;
+        /**
+         * An object similar to `process.env` that the WebAssembly
+         * application will see as its environment.
+         */
+        env?: object | undefined;
+        /**
+         * This object represents the WebAssembly application's
+         * sandbox directory structure. The string keys of `preopens` are treated as
+         * directories within the sandbox. The corresponding values in `preopens` are
+         * the real paths to those directories on the host machine.
+         */
+        preopens?: NodeJS.Dict<string> | undefined;
+        /**
+         * By default, WASI applications terminate the Node.js
+         * process via the `__wasi_proc_exit()` function. Setting this option to `true`
+         * causes `wasi.start()` to return the exit code rather than terminate the
+         * process.
+         * @default false
+         */
+        returnOnExit?: boolean | undefined;
+        /**
+         * The file descriptor used as standard input in the WebAssembly application.
+         * @default 0
+         */
+        stdin?: number | undefined;
+        /**
+         * The file descriptor used as standard output in the WebAssembly application.
+         * @default 1
+         */
+        stdout?: number | undefined;
+        /**
+         * The file descriptor used as standard error in the WebAssembly application.
+         * @default 2
+         */
+        stderr?: number | undefined;
+    }
+    /**
+     * The `WASI` class provides the WASI system call API and additional convenience
+     * methods for working with WASI-based applications. Each `WASI` instance
+     * represents a distinct sandbox environment. For security purposes, each `WASI`instance must have its command-line arguments, environment variables, and
+     * sandbox directory structure configured explicitly.
+     * @since v13.3.0, v12.16.0
+     */
+    class WASI {
+        constructor(options?: WASIOptions);
+        /**
+         * Attempt to begin execution of `instance` as a WASI command by invoking its`_start()` export. If `instance` does not contain a `_start()` export, or if`instance` contains an `_initialize()`
+         * export, then an exception is thrown.
+         *
+         * `start()` requires that `instance` exports a [`WebAssembly.Memory`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WebAssembly/Memory) named`memory`. If
+         * `instance` does not have a `memory` export an exception is thrown.
+         *
+         * If `start()` is called more than once, an exception is thrown.
+         * @since v13.3.0, v12.16.0
+         */
+        start(instance: object): void; // TODO: avoid DOM dependency until WASM moved to own lib.
+        /**
+         * Attempt to initialize `instance` as a WASI reactor by invoking its`_initialize()` export, if it is present. If `instance` contains a `_start()`export, then an exception is thrown.
+         *
+         * `initialize()` requires that `instance` exports a [`WebAssembly.Memory`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WebAssembly/Memory) named`memory`.
+         * If `instance` does not have a `memory` export an exception is thrown.
+         *
+         * If `initialize()` is called more than once, an exception is thrown.
+         * @since v14.6.0, v12.19.0
+         */
+        initialize(instance: object): void; // TODO: avoid DOM dependency until WASM moved to own lib.
+        /**
+         * `wasiImport` is an object that implements the WASI system call API. This object
+         * should be passed as the `wasi_snapshot_preview1` import during the instantiation
+         * of a [`WebAssembly.Instance`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WebAssembly/Instance).
+         * @since v13.3.0, v12.16.0
+         */
+        readonly wasiImport: NodeJS.Dict<any>; // TODO: Narrow to DOM types
+    }
+}
+declare module 'node:wasi' {
+    export * from 'wasi';
+}

backend/node_modules/@types/node/worker_threads.d.ts

@@ -0,0 +1,649 @@
+/**
+ * The `worker_threads` module enables the use of threads that execute JavaScript
+ * in parallel. To access it:
+ *
+ * ```js
+ * const worker = require('worker_threads');
+ * ```
+ *
+ * Workers (threads) are useful for performing CPU-intensive JavaScript operations.
+ * They do not help much with I/O-intensive work. The Node.js built-in
+ * asynchronous I/O operations are more efficient than Workers can be.
+ *
+ * Unlike `child_process` or `cluster`, `worker_threads` can share memory. They do
+ * so by transferring `ArrayBuffer` instances or sharing `SharedArrayBuffer`instances.
+ *
+ * ```js
+ * const {
+ *   Worker, isMainThread, parentPort, workerData
+ * } = require('worker_threads');
+ *
+ * if (isMainThread) {
+ *   module.exports = function parseJSAsync(script) {
+ *     return new Promise((resolve, reject) => {
+ *       const worker = new Worker(__filename, {
+ *         workerData: script
+ *       });
+ *       worker.on('message', resolve);
+ *       worker.on('error', reject);
+ *       worker.on('exit', (code) => {
+ *         if (code !== 0)
+ *           reject(new Error(`Worker stopped with exit code ${code}`));
+ *       });
+ *     });
+ *   };
+ * } else {
+ *   const { parse } = require('some-js-parsing-library');
+ *   const script = workerData;
+ *   parentPort.postMessage(parse(script));
+ * }
+ * ```
+ *
+ * The above example spawns a Worker thread for each `parse()` call. In actual
+ * practice, use a pool of Workers for these kinds of tasks. Otherwise, the
+ * overhead of creating Workers would likely exceed their benefit.
+ *
+ * When implementing a worker pool, use the `AsyncResource` API to inform
+ * diagnostic tools (e.g. to provide asynchronous stack traces) about the
+ * correlation between tasks and their outcomes. See `"Using AsyncResource for a Worker thread pool"` in the `async_hooks` documentation for an example implementation.
+ *
+ * Worker threads inherit non-process-specific options by default. Refer to `Worker constructor options` to know how to customize worker thread options,
+ * specifically `argv` and `execArgv` options.
+ * @see [source](https://github.com/nodejs/node/blob/v17.0.0/lib/worker_threads.js)
+ */
+declare module 'worker_threads' {
+    import { Blob } from 'node:buffer';
+    import { Context } from 'node:vm';
+    import { EventEmitter } from 'node:events';
+    import { EventLoopUtilityFunction } from 'node:perf_hooks';
+    import { FileHandle } from 'node:fs/promises';
+    import { Readable, Writable } from 'node:stream';
+    import { URL } from 'node:url';
+    import { X509Certificate } from 'node:crypto';
+    const isMainThread: boolean;
+    const parentPort: null | MessagePort;
+    const resourceLimits: ResourceLimits;
+    const SHARE_ENV: unique symbol;
+    const threadId: number;
+    const workerData: any;
+    /**
+     * Instances of the `worker.MessageChannel` class represent an asynchronous,
+     * two-way communications channel.
+     * The `MessageChannel` has no methods of its own. `new MessageChannel()`yields an object with `port1` and `port2` properties, which refer to linked `MessagePort` instances.
+     *
+     * ```js
+     * const { MessageChannel } = require('worker_threads');
+     *
+     * const { port1, port2 } = new MessageChannel();
+     * port1.on('message', (message) => console.log('received', message));
+     * port2.postMessage({ foo: 'bar' });
+     * // Prints: received { foo: 'bar' } from the `port1.on('message')` listener
+     * ```
+     * @since v10.5.0
+     */
+    class MessageChannel {
+        readonly port1: MessagePort;
+        readonly port2: MessagePort;
+    }
+    interface WorkerPerformance {
+        eventLoopUtilization: EventLoopUtilityFunction;
+    }
+    type TransferListItem = ArrayBuffer | MessagePort | FileHandle | X509Certificate | Blob;
+    /**
+     * Instances of the `worker.MessagePort` class represent one end of an
+     * asynchronous, two-way communications channel. It can be used to transfer
+     * structured data, memory regions and other `MessagePort`s between different `Worker` s.
+     *
+     * This implementation matches [browser `MessagePort`](https://developer.mozilla.org/en-US/docs/Web/API/MessagePort) s.
+     * @since v10.5.0
+     */
+    class MessagePort extends EventEmitter {
+        /**
+         * Disables further sending of messages on either side of the connection.
+         * This method can be called when no further communication will happen over this`MessagePort`.
+         *
+         * The `'close' event` is emitted on both `MessagePort` instances that
+         * are part of the channel.
+         * @since v10.5.0
+         */
+        close(): void;
+        /**
+         * Sends a JavaScript value to the receiving side of this channel.`value` is transferred in a way which is compatible with
+         * the [HTML structured clone algorithm](https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API/Structured_clone_algorithm).
+         *
+         * In particular, the significant differences to `JSON` are:
+         *
+         * * `value` may contain circular references.
+         * * `value` may contain instances of builtin JS types such as `RegExp`s,`BigInt`s, `Map`s, `Set`s, etc.
+         * * `value` may contain typed arrays, both using `ArrayBuffer`s
+         * and `SharedArrayBuffer`s.
+         * * `value` may contain [`WebAssembly.Module`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WebAssembly/Module) instances.
+         * * `value` may not contain native (C++-backed) objects other than:
+         *
+         * ```js
+         * const { MessageChannel } = require('worker_threads');
+         * const { port1, port2 } = new MessageChannel();
+         *
+         * port1.on('message', (message) => console.log(message));
+         *
+         * const circularData = {};
+         * circularData.foo = circularData;
+         * // Prints: { foo: [Circular] }
+         * port2.postMessage(circularData);
+         * ```
+         *
+         * `transferList` may be a list of [`ArrayBuffer`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer), `MessagePort` and `FileHandle` objects.
+         * After transferring, they are not usable on the sending side of the channel
+         * anymore (even if they are not contained in `value`). Unlike with `child processes`, transferring handles such as network sockets is currently
+         * not supported.
+         *
+         * If `value` contains [`SharedArrayBuffer`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/SharedArrayBuffer) instances, those are accessible
+         * from either thread. They cannot be listed in `transferList`.
+         *
+         * `value` may still contain `ArrayBuffer` instances that are not in`transferList`; in that case, the underlying memory is copied rather than moved.
+         *
+         * ```js
+         * const { MessageChannel } = require('worker_threads');
+         * const { port1, port2 } = new MessageChannel();
+         *
+         * port1.on('message', (message) => console.log(message));
+         *
+         * const uint8Array = new Uint8Array([ 1, 2, 3, 4 ]);
+         * // This posts a copy of `uint8Array`:
+         * port2.postMessage(uint8Array);
+         * // This does not copy data, but renders `uint8Array` unusable:
+         * port2.postMessage(uint8Array, [ uint8Array.buffer ]);
+         *
+         * // The memory for the `sharedUint8Array` is accessible from both the
+         * // original and the copy received by `.on('message')`:
+         * const sharedUint8Array = new Uint8Array(new SharedArrayBuffer(4));
+         * port2.postMessage(sharedUint8Array);
+         *
+         * // This transfers a freshly created message port to the receiver.
+         * // This can be used, for example, to create communication channels between
+         * // multiple `Worker` threads that are children of the same parent thread.
+         * const otherChannel = new MessageChannel();
+         * port2.postMessage({ port: otherChannel.port1 }, [ otherChannel.port1 ]);
+         * ```
+         *
+         * The message object is cloned immediately, and can be modified after
+         * posting without having side effects.
+         *
+         * For more information on the serialization and deserialization mechanisms
+         * behind this API, see the `serialization API of the v8 module`.
+         * @since v10.5.0
+         */
+        postMessage(value: any, transferList?: ReadonlyArray<TransferListItem>): void;
+        /**
+         * Opposite of `unref()`. Calling `ref()` on a previously `unref()`ed port does_not_ let the program exit if it's the only active handle left (the default
+         * behavior). If the port is `ref()`ed, calling `ref()` again has no effect.
+         *
+         * If listeners are attached or removed using `.on('message')`, the port
+         * is `ref()`ed and `unref()`ed automatically depending on whether
+         * listeners for the event exist.
+         * @since v10.5.0
+         */
+        ref(): void;
+        /**
+         * Calling `unref()` on a port allows the thread to exit if this is the only
+         * active handle in the event system. If the port is already `unref()`ed calling`unref()` again has no effect.
+         *
+         * If listeners are attached or removed using `.on('message')`, the port is`ref()`ed and `unref()`ed automatically depending on whether
+         * listeners for the event exist.
+         * @since v10.5.0
+         */
+        unref(): void;
+        /**
+         * Starts receiving messages on this `MessagePort`. When using this port
+         * as an event emitter, this is called automatically once `'message'`listeners are attached.
+         *
+         * This method exists for parity with the Web `MessagePort` API. In Node.js,
+         * it is only useful for ignoring messages when no event listener is present.
+         * Node.js also diverges in its handling of `.onmessage`. Setting it
+         * automatically calls `.start()`, but unsetting it lets messages queue up
+         * until a new handler is set or the port is discarded.
+         * @since v10.5.0
+         */
+        start(): void;
+        addListener(event: 'close', listener: () => void): this;
+        addListener(event: 'message', listener: (value: any) => void): this;
+        addListener(event: 'messageerror', listener: (error: Error) => void): this;
+        addListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        emit(event: 'close'): boolean;
+        emit(event: 'message', value: any): boolean;
+        emit(event: 'messageerror', error: Error): boolean;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        on(event: 'close', listener: () => void): this;
+        on(event: 'message', listener: (value: any) => void): this;
+        on(event: 'messageerror', listener: (error: Error) => void): this;
+        on(event: string | symbol, listener: (...args: any[]) => void): this;
+        once(event: 'close', listener: () => void): this;
+        once(event: 'message', listener: (value: any) => void): this;
+        once(event: 'messageerror', listener: (error: Error) => void): this;
+        once(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependListener(event: 'close', listener: () => void): this;
+        prependListener(event: 'message', listener: (value: any) => void): this;
+        prependListener(event: 'messageerror', listener: (error: Error) => void): this;
+        prependListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'close', listener: () => void): this;
+        prependOnceListener(event: 'message', listener: (value: any) => void): this;
+        prependOnceListener(event: 'messageerror', listener: (error: Error) => void): this;
+        prependOnceListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        removeListener(event: 'close', listener: () => void): this;
+        removeListener(event: 'message', listener: (value: any) => void): this;
+        removeListener(event: 'messageerror', listener: (error: Error) => void): this;
+        removeListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        off(event: 'close', listener: () => void): this;
+        off(event: 'message', listener: (value: any) => void): this;
+        off(event: 'messageerror', listener: (error: Error) => void): this;
+        off(event: string | symbol, listener: (...args: any[]) => void): this;
+    }
+    interface WorkerOptions {
+        /**
+         * List of arguments which would be stringified and appended to
+         * `process.argv` in the worker. This is mostly similar to the `workerData`
+         * but the values will be available on the global `process.argv` as if they
+         * were passed as CLI options to the script.
+         */
+        argv?: any[] | undefined;
+        env?: NodeJS.Dict<string> | typeof SHARE_ENV | undefined;
+        eval?: boolean | undefined;
+        workerData?: any;
+        stdin?: boolean | undefined;
+        stdout?: boolean | undefined;
+        stderr?: boolean | undefined;
+        execArgv?: string[] | undefined;
+        resourceLimits?: ResourceLimits | undefined;
+        /**
+         * Additional data to send in the first worker message.
+         */
+        transferList?: TransferListItem[] | undefined;
+        /**
+         * @default true
+         */
+        trackUnmanagedFds?: boolean | undefined;
+    }
+    interface ResourceLimits {
+        /**
+         * The maximum size of a heap space for recently created objects.
+         */
+        maxYoungGenerationSizeMb?: number | undefined;
+        /**
+         * The maximum size of the main heap in MB.
+         */
+        maxOldGenerationSizeMb?: number | undefined;
+        /**
+         * The size of a pre-allocated memory range used for generated code.
+         */
+        codeRangeSizeMb?: number | undefined;
+        /**
+         * The default maximum stack size for the thread. Small values may lead to unusable Worker instances.
+         * @default 4
+         */
+        stackSizeMb?: number | undefined;
+    }
+    /**
+     * The `Worker` class represents an independent JavaScript execution thread.
+     * Most Node.js APIs are available inside of it.
+     *
+     * Notable differences inside a Worker environment are:
+     *
+     * * The `process.stdin`, `process.stdout` and `process.stderr` may be redirected by the parent thread.
+     * * The `require('worker_threads').isMainThread` property is set to `false`.
+     * * The `require('worker_threads').parentPort` message port is available.
+     * * `process.exit()` does not stop the whole program, just the single thread,
+     * and `process.abort()` is not available.
+     * * `process.chdir()` and `process` methods that set group or user ids
+     * are not available.
+     * * `process.env` is a copy of the parent thread's environment variables,
+     * unless otherwise specified. Changes to one copy are not visible in other
+     * threads, and are not visible to native add-ons (unless `worker.SHARE_ENV` is passed as the `env` option to the `Worker` constructor).
+     * * `process.title` cannot be modified.
+     * * Signals are not delivered through `process.on('...')`.
+     * * Execution may stop at any point as a result of `worker.terminate()` being invoked.
+     * * IPC channels from parent processes are not accessible.
+     * * The `trace_events` module is not supported.
+     * * Native add-ons can only be loaded from multiple threads if they fulfill `certain conditions`.
+     *
+     * Creating `Worker` instances inside of other `Worker`s is possible.
+     *
+     * Like [Web Workers](https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API) and the `cluster module`, two-way communication can be
+     * achieved through inter-thread message passing. Internally, a `Worker` has a
+     * built-in pair of `MessagePort` s that are already associated with each other
+     * when the `Worker` is created. While the `MessagePort` object on the parent side
+     * is not directly exposed, its functionalities are exposed through `worker.postMessage()` and the `worker.on('message')` event
+     * on the `Worker` object for the parent thread.
+     *
+     * To create custom messaging channels (which is encouraged over using the default
+     * global channel because it facilitates separation of concerns), users can create
+     * a `MessageChannel` object on either thread and pass one of the`MessagePort`s on that `MessageChannel` to the other thread through a
+     * pre-existing channel, such as the global one.
+     *
+     * See `port.postMessage()` for more information on how messages are passed,
+     * and what kind of JavaScript values can be successfully transported through
+     * the thread barrier.
+     *
+     * ```js
+     * const assert = require('assert');
+     * const {
+     *   Worker, MessageChannel, MessagePort, isMainThread, parentPort
+     * } = require('worker_threads');
+     * if (isMainThread) {
+     *   const worker = new Worker(__filename);
+     *   const subChannel = new MessageChannel();
+     *   worker.postMessage({ hereIsYourPort: subChannel.port1 }, [subChannel.port1]);
+     *   subChannel.port2.on('message', (value) => {
+     *     console.log('received:', value);
+     *   });
+     * } else {
+     *   parentPort.once('message', (value) => {
+     *     assert(value.hereIsYourPort instanceof MessagePort);
+     *     value.hereIsYourPort.postMessage('the worker is sending this');
+     *     value.hereIsYourPort.close();
+     *   });
+     * }
+     * ```
+     * @since v10.5.0
+     */
+    class Worker extends EventEmitter {
+        /**
+         * If `stdin: true` was passed to the `Worker` constructor, this is a
+         * writable stream. The data written to this stream will be made available in
+         * the worker thread as `process.stdin`.
+         * @since v10.5.0
+         */
+        readonly stdin: Writable | null;
+        /**
+         * This is a readable stream which contains data written to `process.stdout` inside the worker thread. If `stdout: true` was not passed to the `Worker` constructor, then data is piped to the
+         * parent thread's `process.stdout` stream.
+         * @since v10.5.0
+         */
+        readonly stdout: Readable;
+        /**
+         * This is a readable stream which contains data written to `process.stderr` inside the worker thread. If `stderr: true` was not passed to the `Worker` constructor, then data is piped to the
+         * parent thread's `process.stderr` stream.
+         * @since v10.5.0
+         */
+        readonly stderr: Readable;
+        /**
+         * An integer identifier for the referenced thread. Inside the worker thread,
+         * it is available as `require('worker_threads').threadId`.
+         * This value is unique for each `Worker` instance inside a single process.
+         * @since v10.5.0
+         */
+        readonly threadId: number;
+        /**
+         * Provides the set of JS engine resource constraints for this Worker thread.
+         * If the `resourceLimits` option was passed to the `Worker` constructor,
+         * this matches its values.
+         *
+         * If the worker has stopped, the return value is an empty object.
+         * @since v13.2.0, v12.16.0
+         */
+        readonly resourceLimits?: ResourceLimits | undefined;
+        /**
+         * An object that can be used to query performance information from a worker
+         * instance. Similar to `perf_hooks.performance`.
+         * @since v15.1.0, v14.17.0, v12.22.0
+         */
+        readonly performance: WorkerPerformance;
+        /**
+         * @param filename  The path to the Worker’s main script or module.
+         *                  Must be either an absolute path or a relative path (i.e. relative to the current working directory) starting with ./ or ../,
+         *                  or a WHATWG URL object using file: protocol. If options.eval is true, this is a string containing JavaScript code rather than a path.
+         */
+        constructor(filename: string | URL, options?: WorkerOptions);
+        /**
+         * Send a message to the worker that is received via `require('worker_threads').parentPort.on('message')`.
+         * See `port.postMessage()` for more details.
+         * @since v10.5.0
+         */
+        postMessage(value: any, transferList?: ReadonlyArray<TransferListItem>): void;
+        /**
+         * Opposite of `unref()`, calling `ref()` on a previously `unref()`ed worker does_not_ let the program exit if it's the only active handle left (the default
+         * behavior). If the worker is `ref()`ed, calling `ref()` again has
+         * no effect.
+         * @since v10.5.0
+         */
+        ref(): void;
+        /**
+         * Calling `unref()` on a worker allows the thread to exit if this is the only
+         * active handle in the event system. If the worker is already `unref()`ed calling`unref()` again has no effect.
+         * @since v10.5.0
+         */
+        unref(): void;
+        /**
+         * Stop all JavaScript execution in the worker thread as soon as possible.
+         * Returns a Promise for the exit code that is fulfilled when the `'exit' event` is emitted.
+         * @since v10.5.0
+         */
+        terminate(): Promise<number>;
+        /**
+         * Returns a readable stream for a V8 snapshot of the current state of the Worker.
+         * See `v8.getHeapSnapshot()` for more details.
+         *
+         * If the Worker thread is no longer running, which may occur before the `'exit' event` is emitted, the returned `Promise` is rejected
+         * immediately with an `ERR_WORKER_NOT_RUNNING` error.
+         * @since v13.9.0, v12.17.0
+         * @return A promise for a Readable Stream containing a V8 heap snapshot
+         */
+        getHeapSnapshot(): Promise<Readable>;
+        addListener(event: 'error', listener: (err: Error) => void): this;
+        addListener(event: 'exit', listener: (exitCode: number) => void): this;
+        addListener(event: 'message', listener: (value: any) => void): this;
+        addListener(event: 'messageerror', listener: (error: Error) => void): this;
+        addListener(event: 'online', listener: () => void): this;
+        addListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        emit(event: 'error', err: Error): boolean;
+        emit(event: 'exit', exitCode: number): boolean;
+        emit(event: 'message', value: any): boolean;
+        emit(event: 'messageerror', error: Error): boolean;
+        emit(event: 'online'): boolean;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        on(event: 'error', listener: (err: Error) => void): this;
+        on(event: 'exit', listener: (exitCode: number) => void): this;
+        on(event: 'message', listener: (value: any) => void): this;
+        on(event: 'messageerror', listener: (error: Error) => void): this;
+        on(event: 'online', listener: () => void): this;
+        on(event: string | symbol, listener: (...args: any[]) => void): this;
+        once(event: 'error', listener: (err: Error) => void): this;
+        once(event: 'exit', listener: (exitCode: number) => void): this;
+        once(event: 'message', listener: (value: any) => void): this;
+        once(event: 'messageerror', listener: (error: Error) => void): this;
+        once(event: 'online', listener: () => void): this;
+        once(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependListener(event: 'error', listener: (err: Error) => void): this;
+        prependListener(event: 'exit', listener: (exitCode: number) => void): this;
+        prependListener(event: 'message', listener: (value: any) => void): this;
+        prependListener(event: 'messageerror', listener: (error: Error) => void): this;
+        prependListener(event: 'online', listener: () => void): this;
+        prependListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'error', listener: (err: Error) => void): this;
+        prependOnceListener(event: 'exit', listener: (exitCode: number) => void): this;
+        prependOnceListener(event: 'message', listener: (value: any) => void): this;
+        prependOnceListener(event: 'messageerror', listener: (error: Error) => void): this;
+        prependOnceListener(event: 'online', listener: () => void): this;
+        prependOnceListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        removeListener(event: 'error', listener: (err: Error) => void): this;
+        removeListener(event: 'exit', listener: (exitCode: number) => void): this;
+        removeListener(event: 'message', listener: (value: any) => void): this;
+        removeListener(event: 'messageerror', listener: (error: Error) => void): this;
+        removeListener(event: 'online', listener: () => void): this;
+        removeListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        off(event: 'error', listener: (err: Error) => void): this;
+        off(event: 'exit', listener: (exitCode: number) => void): this;
+        off(event: 'message', listener: (value: any) => void): this;
+        off(event: 'messageerror', listener: (error: Error) => void): this;
+        off(event: 'online', listener: () => void): this;
+        off(event: string | symbol, listener: (...args: any[]) => void): this;
+    }
+    interface BroadcastChannel extends NodeJS.RefCounted {}
+    /**
+     * Instances of `BroadcastChannel` allow asynchronous one-to-many communication
+     * with all other `BroadcastChannel` instances bound to the same channel name.
+     *
+     * ```js
+     * 'use strict';
+     *
+     * const {
+     *   isMainThread,
+     *   BroadcastChannel,
+     *   Worker
+     * } = require('worker_threads');
+     *
+     * const bc = new BroadcastChannel('hello');
+     *
+     * if (isMainThread) {
+     *   let c = 0;
+     *   bc.onmessage = (event) => {
+     *     console.log(event.data);
+     *     if (++c === 10) bc.close();
+     *   };
+     *   for (let n = 0; n < 10; n++)
+     *     new Worker(__filename);
+     * } else {
+     *   bc.postMessage('hello from every worker');
+     *   bc.close();
+     * }
+     * ```
+     * @since v15.4.0
+     * @experimental
+     */
+    class BroadcastChannel {
+        readonly name: string;
+        /**
+         * Invoked with a single \`MessageEvent\` argument when a message is received.
+         * @since v15.4.0
+         */
+        onmessage: (message: unknown) => void;
+        /**
+         * Invoked with a received message cannot be deserialized.
+         * @since v15.4.0
+         */
+        onmessageerror: (message: unknown) => void;
+        constructor(name: string);
+        /**
+         * Closes the `BroadcastChannel` connection.
+         * @since v15.4.0
+         */
+        close(): void;
+        /**
+         * @since v15.4.0
+         * @param message Any cloneable JavaScript value.
+         */
+        postMessage(message: unknown): void;
+    }
+    /**
+     * Mark an object as not transferable. If `object` occurs in the transfer list of
+     * a `port.postMessage()` call, it is ignored.
+     *
+     * In particular, this makes sense for objects that can be cloned, rather than
+     * transferred, and which are used by other objects on the sending side.
+     * For example, Node.js marks the `ArrayBuffer`s it uses for its `Buffer pool` with this.
+     *
+     * This operation cannot be undone.
+     *
+     * ```js
+     * const { MessageChannel, markAsUntransferable } = require('worker_threads');
+     *
+     * const pooledBuffer = new ArrayBuffer(8);
+     * const typedArray1 = new Uint8Array(pooledBuffer);
+     * const typedArray2 = new Float64Array(pooledBuffer);
+     *
+     * markAsUntransferable(pooledBuffer);
+     *
+     * const { port1 } = new MessageChannel();
+     * port1.postMessage(typedArray1, [ typedArray1.buffer ]);
+     *
+     * // The following line prints the contents of typedArray1 -- it still owns
+     * // its memory and has been cloned, not transferred. Without
+     * // `markAsUntransferable()`, this would print an empty Uint8Array.
+     * // typedArray2 is intact as well.
+     * console.log(typedArray1);
+     * console.log(typedArray2);
+     * ```
+     *
+     * There is no equivalent to this API in browsers.
+     * @since v14.5.0, v12.19.0
+     */
+    function markAsUntransferable(object: object): void;
+    /**
+     * Transfer a `MessagePort` to a different `vm` Context. The original `port`object is rendered unusable, and the returned `MessagePort` instance
+     * takes its place.
+     *
+     * The returned `MessagePort` is an object in the target context and
+     * inherits from its global `Object` class. Objects passed to the [`port.onmessage()`](https://developer.mozilla.org/en-US/docs/Web/API/MessagePort/onmessage) listener are also created in the
+     * target context
+     * and inherit from its global `Object` class.
+     *
+     * However, the created `MessagePort` no longer inherits from [`EventTarget`](https://developer.mozilla.org/en-US/docs/Web/API/EventTarget), and only
+     * [`port.onmessage()`](https://developer.mozilla.org/en-US/docs/Web/API/MessagePort/onmessage) can be used to receive
+     * events using it.
+     * @since v11.13.0
+     * @param port The message port to transfer.
+     * @param contextifiedSandbox A `contextified` object as returned by the `vm.createContext()` method.
+     */
+    function moveMessagePortToContext(port: MessagePort, contextifiedSandbox: Context): MessagePort;
+    /**
+     * Receive a single message from a given `MessagePort`. If no message is available,`undefined` is returned, otherwise an object with a single `message` property
+     * that contains the message payload, corresponding to the oldest message in the`MessagePort`’s queue.
+     *
+     * ```js
+     * const { MessageChannel, receiveMessageOnPort } = require('worker_threads');
+     * const { port1, port2 } = new MessageChannel();
+     * port1.postMessage({ hello: 'world' });
+     *
+     * console.log(receiveMessageOnPort(port2));
+     * // Prints: { message: { hello: 'world' } }
+     * console.log(receiveMessageOnPort(port2));
+     * // Prints: undefined
+     * ```
+     *
+     * When this function is used, no `'message'` event is emitted and the`onmessage` listener is not invoked.
+     * @since v12.3.0
+     */
+    function receiveMessageOnPort(port: MessagePort):
+        | {
+              message: any;
+          }
+        | undefined;
+    type Serializable = string | object | number | boolean | bigint;
+    /**
+     * Within a worker thread, `worker.getEnvironmentData()` returns a clone
+     * of data passed to the spawning thread's `worker.setEnvironmentData()`.
+     * Every new `Worker` receives its own copy of the environment data
+     * automatically.
+     *
+     * ```js
+     * const {
+     *   Worker,
+     *   isMainThread,
+     *   setEnvironmentData,
+     *   getEnvironmentData,
+     * } = require('worker_threads');
+     *
+     * if (isMainThread) {
+     *   setEnvironmentData('Hello', 'World!');
+     *   const worker = new Worker(__filename);
+     * } else {
+     *   console.log(getEnvironmentData('Hello'));  // Prints 'World!'.
+     * }
+     * ```
+     * @since v15.12.0, v14.18.0
+     * @experimental
+     * @param key Any arbitrary, cloneable JavaScript value that can be used as a {Map} key.
+     */
+    function getEnvironmentData(key: Serializable): Serializable;
+    /**
+     * The `worker.setEnvironmentData()` API sets the content of`worker.getEnvironmentData()` in the current thread and all new `Worker`instances spawned from the current context.
+     * @since v15.12.0, v14.18.0
+     * @experimental
+     * @param key Any arbitrary, cloneable JavaScript value that can be used as a {Map} key.
+     * @param value Any arbitrary, cloneable JavaScript value that will be cloned and passed automatically to all new `Worker` instances. If `value` is passed as `undefined`, any previously set value
+     * for the `key` will be deleted.
+     */
+    function setEnvironmentData(key: Serializable, value: Serializable): void;
+}
+declare module 'node:worker_threads' {
+    export * from 'worker_threads';
+}

backend/node_modules/@types/node/zlib.d.ts

@@ -0,0 +1,517 @@
+/**
+ * The `zlib` module provides compression functionality implemented using Gzip,
+ * Deflate/Inflate, and Brotli.
+ *
+ * To access it:
+ *
+ * ```js
+ * const zlib = require('zlib');
+ * ```
+ *
+ * Compression and decompression are built around the Node.js `Streams API`.
+ *
+ * Compressing or decompressing a stream (such as a file) can be accomplished by
+ * piping the source stream through a `zlib` `Transform` stream into a destination
+ * stream:
+ *
+ * ```js
+ * const { createGzip } = require('zlib');
+ * const { pipeline } = require('stream');
+ * const {
+ *   createReadStream,
+ *   createWriteStream
+ * } = require('fs');
+ *
+ * const gzip = createGzip();
+ * const source = createReadStream('input.txt');
+ * const destination = createWriteStream('input.txt.gz');
+ *
+ * pipeline(source, gzip, destination, (err) => {
+ *   if (err) {
+ *     console.error('An error occurred:', err);
+ *     process.exitCode = 1;
+ *   }
+ * });
+ *
+ * // Or, Promisified
+ *
+ * const { promisify } = require('util');
+ * const pipe = promisify(pipeline);
+ *
+ * async function do_gzip(input, output) {
+ *   const gzip = createGzip();
+ *   const source = createReadStream(input);
+ *   const destination = createWriteStream(output);
+ *   await pipe(source, gzip, destination);
+ * }
+ *
+ * do_gzip('input.txt', 'input.txt.gz')
+ *   .catch((err) => {
+ *     console.error('An error occurred:', err);
+ *     process.exitCode = 1;
+ *   });
+ * ```
+ *
+ * It is also possible to compress or decompress data in a single step:
+ *
+ * ```js
+ * const { deflate, unzip } = require('zlib');
+ *
+ * const input = '.................................';
+ * deflate(input, (err, buffer) => {
+ *   if (err) {
+ *     console.error('An error occurred:', err);
+ *     process.exitCode = 1;
+ *   }
+ *   console.log(buffer.toString('base64'));
+ * });
+ *
+ * const buffer = Buffer.from('eJzT0yMAAGTvBe8=', 'base64');
+ * unzip(buffer, (err, buffer) => {
+ *   if (err) {
+ *     console.error('An error occurred:', err);
+ *     process.exitCode = 1;
+ *   }
+ *   console.log(buffer.toString());
+ * });
+ *
+ * // Or, Promisified
+ *
+ * const { promisify } = require('util');
+ * const do_unzip = promisify(unzip);
+ *
+ * do_unzip(buffer)
+ *   .then((buf) => console.log(buf.toString()))
+ *   .catch((err) => {
+ *     console.error('An error occurred:', err);
+ *     process.exitCode = 1;
+ *   });
+ * ```
+ * @since v0.5.8
+ * @see [source](https://github.com/nodejs/node/blob/v17.0.0/lib/zlib.js)
+ */
+declare module 'zlib' {
+    import * as stream from 'node:stream';
+    interface ZlibOptions {
+        /**
+         * @default constants.Z_NO_FLUSH
+         */
+        flush?: number | undefined;
+        /**
+         * @default constants.Z_FINISH
+         */
+        finishFlush?: number | undefined;
+        /**
+         * @default 16*1024
+         */
+        chunkSize?: number | undefined;
+        windowBits?: number | undefined;
+        level?: number | undefined; // compression only
+        memLevel?: number | undefined; // compression only
+        strategy?: number | undefined; // compression only
+        dictionary?: NodeJS.ArrayBufferView | ArrayBuffer | undefined; // deflate/inflate only, empty dictionary by default
+        info?: boolean | undefined;
+        maxOutputLength?: number | undefined;
+    }
+    interface BrotliOptions {
+        /**
+         * @default constants.BROTLI_OPERATION_PROCESS
+         */
+        flush?: number | undefined;
+        /**
+         * @default constants.BROTLI_OPERATION_FINISH
+         */
+        finishFlush?: number | undefined;
+        /**
+         * @default 16*1024
+         */
+        chunkSize?: number | undefined;
+        params?:
+            | {
+                  /**
+                   * Each key is a `constants.BROTLI_*` constant.
+                   */
+                  [key: number]: boolean | number;
+              }
+            | undefined;
+        maxOutputLength?: number | undefined;
+    }
+    interface Zlib {
+        /** @deprecated Use bytesWritten instead. */
+        readonly bytesRead: number;
+        readonly bytesWritten: number;
+        shell?: boolean | string | undefined;
+        close(callback?: () => void): void;
+        flush(kind?: number, callback?: () => void): void;
+        flush(callback?: () => void): void;
+    }
+    interface ZlibParams {
+        params(level: number, strategy: number, callback: () => void): void;
+    }
+    interface ZlibReset {
+        reset(): void;
+    }
+    interface BrotliCompress extends stream.Transform, Zlib {}
+    interface BrotliDecompress extends stream.Transform, Zlib {}
+    interface Gzip extends stream.Transform, Zlib {}
+    interface Gunzip extends stream.Transform, Zlib {}
+    interface Deflate extends stream.Transform, Zlib, ZlibReset, ZlibParams {}
+    interface Inflate extends stream.Transform, Zlib, ZlibReset {}
+    interface DeflateRaw extends stream.Transform, Zlib, ZlibReset, ZlibParams {}
+    interface InflateRaw extends stream.Transform, Zlib, ZlibReset {}
+    interface Unzip extends stream.Transform, Zlib {}
+    /**
+     * Creates and returns a new `BrotliCompress` object.
+     * @since v11.7.0, v10.16.0
+     */
+    function createBrotliCompress(options?: BrotliOptions): BrotliCompress;
+    /**
+     * Creates and returns a new `BrotliDecompress` object.
+     * @since v11.7.0, v10.16.0
+     */
+    function createBrotliDecompress(options?: BrotliOptions): BrotliDecompress;
+    /**
+     * Creates and returns a new `Gzip` object.
+     * See `example`.
+     * @since v0.5.8
+     */
+    function createGzip(options?: ZlibOptions): Gzip;
+    /**
+     * Creates and returns a new `Gunzip` object.
+     * @since v0.5.8
+     */
+    function createGunzip(options?: ZlibOptions): Gunzip;
+    /**
+     * Creates and returns a new `Deflate` object.
+     * @since v0.5.8
+     */
+    function createDeflate(options?: ZlibOptions): Deflate;
+    /**
+     * Creates and returns a new `Inflate` object.
+     * @since v0.5.8
+     */
+    function createInflate(options?: ZlibOptions): Inflate;
+    /**
+     * Creates and returns a new `DeflateRaw` object.
+     *
+     * An upgrade of zlib from 1.2.8 to 1.2.11 changed behavior when `windowBits`is set to 8 for raw deflate streams. zlib would automatically set `windowBits`to 9 if was initially set to 8\. Newer
+     * versions of zlib will throw an exception,
+     * so Node.js restored the original behavior of upgrading a value of 8 to 9,
+     * since passing `windowBits = 9` to zlib actually results in a compressed stream
+     * that effectively uses an 8-bit window only.
+     * @since v0.5.8
+     */
+    function createDeflateRaw(options?: ZlibOptions): DeflateRaw;
+    /**
+     * Creates and returns a new `InflateRaw` object.
+     * @since v0.5.8
+     */
+    function createInflateRaw(options?: ZlibOptions): InflateRaw;
+    /**
+     * Creates and returns a new `Unzip` object.
+     * @since v0.5.8
+     */
+    function createUnzip(options?: ZlibOptions): Unzip;
+    type InputType = string | ArrayBuffer | NodeJS.ArrayBufferView;
+    type CompressCallback = (error: Error | null, result: Buffer) => void;
+    /**
+     * @since v11.7.0, v10.16.0
+     */
+    function brotliCompress(buf: InputType, options: BrotliOptions, callback: CompressCallback): void;
+    function brotliCompress(buf: InputType, callback: CompressCallback): void;
+    namespace brotliCompress {
+        function __promisify__(buffer: InputType, options?: BrotliOptions): Promise<Buffer>;
+    }
+    /**
+     * Compress a chunk of data with `BrotliCompress`.
+     * @since v11.7.0, v10.16.0
+     */
+    function brotliCompressSync(buf: InputType, options?: BrotliOptions): Buffer;
+    /**
+     * @since v11.7.0, v10.16.0
+     */
+    function brotliDecompress(buf: InputType, options: BrotliOptions, callback: CompressCallback): void;
+    function brotliDecompress(buf: InputType, callback: CompressCallback): void;
+    namespace brotliDecompress {
+        function __promisify__(buffer: InputType, options?: BrotliOptions): Promise<Buffer>;
+    }
+    /**
+     * Decompress a chunk of data with `BrotliDecompress`.
+     * @since v11.7.0, v10.16.0
+     */
+    function brotliDecompressSync(buf: InputType, options?: BrotliOptions): Buffer;
+    /**
+     * @since v0.6.0
+     */
+    function deflate(buf: InputType, callback: CompressCallback): void;
+    function deflate(buf: InputType, options: ZlibOptions, callback: CompressCallback): void;
+    namespace deflate {
+        function __promisify__(buffer: InputType, options?: ZlibOptions): Promise<Buffer>;
+    }
+    /**
+     * Compress a chunk of data with `Deflate`.
+     * @since v0.11.12
+     */
+    function deflateSync(buf: InputType, options?: ZlibOptions): Buffer;
+    /**
+     * @since v0.6.0
+     */
+    function deflateRaw(buf: InputType, callback: CompressCallback): void;
+    function deflateRaw(buf: InputType, options: ZlibOptions, callback: CompressCallback): void;
+    namespace deflateRaw {
+        function __promisify__(buffer: InputType, options?: ZlibOptions): Promise<Buffer>;
+    }
+    /**
+     * Compress a chunk of data with `DeflateRaw`.
+     * @since v0.11.12
+     */
+    function deflateRawSync(buf: InputType, options?: ZlibOptions): Buffer;
+    /**
+     * @since v0.6.0
+     */
+    function gzip(buf: InputType, callback: CompressCallback): void;
+    function gzip(buf: InputType, options: ZlibOptions, callback: CompressCallback): void;
+    namespace gzip {
+        function __promisify__(buffer: InputType, options?: ZlibOptions): Promise<Buffer>;
+    }
+    /**
+     * Compress a chunk of data with `Gzip`.
+     * @since v0.11.12
+     */
+    function gzipSync(buf: InputType, options?: ZlibOptions): Buffer;
+    /**
+     * @since v0.6.0
+     */
+    function gunzip(buf: InputType, callback: CompressCallback): void;
+    function gunzip(buf: InputType, options: ZlibOptions, callback: CompressCallback): void;
+    namespace gunzip {
+        function __promisify__(buffer: InputType, options?: ZlibOptions): Promise<Buffer>;
+    }
+    /**
+     * Decompress a chunk of data with `Gunzip`.
+     * @since v0.11.12
+     */
+    function gunzipSync(buf: InputType, options?: ZlibOptions): Buffer;
+    /**
+     * @since v0.6.0
+     */
+    function inflate(buf: InputType, callback: CompressCallback): void;
+    function inflate(buf: InputType, options: ZlibOptions, callback: CompressCallback): void;
+    namespace inflate {
+        function __promisify__(buffer: InputType, options?: ZlibOptions): Promise<Buffer>;
+    }
+    /**
+     * Decompress a chunk of data with `Inflate`.
+     * @since v0.11.12
+     */
+    function inflateSync(buf: InputType, options?: ZlibOptions): Buffer;
+    /**
+     * @since v0.6.0
+     */
+    function inflateRaw(buf: InputType, callback: CompressCallback): void;
+    function inflateRaw(buf: InputType, options: ZlibOptions, callback: CompressCallback): void;
+    namespace inflateRaw {
+        function __promisify__(buffer: InputType, options?: ZlibOptions): Promise<Buffer>;
+    }
+    /**
+     * Decompress a chunk of data with `InflateRaw`.
+     * @since v0.11.12
+     */
+    function inflateRawSync(buf: InputType, options?: ZlibOptions): Buffer;
+    /**
+     * @since v0.6.0
+     */
+    function unzip(buf: InputType, callback: CompressCallback): void;
+    function unzip(buf: InputType, options: ZlibOptions, callback: CompressCallback): void;
+    namespace unzip {
+        function __promisify__(buffer: InputType, options?: ZlibOptions): Promise<Buffer>;
+    }
+    /**
+     * Decompress a chunk of data with `Unzip`.
+     * @since v0.11.12
+     */
+    function unzipSync(buf: InputType, options?: ZlibOptions): Buffer;
+    namespace constants {
+        const BROTLI_DECODE: number;
+        const BROTLI_DECODER_ERROR_ALLOC_BLOCK_TYPE_TREES: number;
+        const BROTLI_DECODER_ERROR_ALLOC_CONTEXT_MAP: number;
+        const BROTLI_DECODER_ERROR_ALLOC_CONTEXT_MODES: number;
+        const BROTLI_DECODER_ERROR_ALLOC_RING_BUFFER_1: number;
+        const BROTLI_DECODER_ERROR_ALLOC_RING_BUFFER_2: number;
+        const BROTLI_DECODER_ERROR_ALLOC_TREE_GROUPS: number;
+        const BROTLI_DECODER_ERROR_DICTIONARY_NOT_SET: number;
+        const BROTLI_DECODER_ERROR_FORMAT_BLOCK_LENGTH_1: number;
+        const BROTLI_DECODER_ERROR_FORMAT_BLOCK_LENGTH_2: number;
+        const BROTLI_DECODER_ERROR_FORMAT_CL_SPACE: number;
+        const BROTLI_DECODER_ERROR_FORMAT_CONTEXT_MAP_REPEAT: number;
+        const BROTLI_DECODER_ERROR_FORMAT_DICTIONARY: number;
+        const BROTLI_DECODER_ERROR_FORMAT_DISTANCE: number;
+        const BROTLI_DECODER_ERROR_FORMAT_EXUBERANT_META_NIBBLE: number;
+        const BROTLI_DECODER_ERROR_FORMAT_EXUBERANT_NIBBLE: number;
+        const BROTLI_DECODER_ERROR_FORMAT_HUFFMAN_SPACE: number;
+        const BROTLI_DECODER_ERROR_FORMAT_PADDING_1: number;
+        const BROTLI_DECODER_ERROR_FORMAT_PADDING_2: number;
+        const BROTLI_DECODER_ERROR_FORMAT_RESERVED: number;
+        const BROTLI_DECODER_ERROR_FORMAT_SIMPLE_HUFFMAN_ALPHABET: number;
+        const BROTLI_DECODER_ERROR_FORMAT_SIMPLE_HUFFMAN_SAME: number;
+        const BROTLI_DECODER_ERROR_FORMAT_TRANSFORM: number;
+        const BROTLI_DECODER_ERROR_FORMAT_WINDOW_BITS: number;
+        const BROTLI_DECODER_ERROR_INVALID_ARGUMENTS: number;
+        const BROTLI_DECODER_ERROR_UNREACHABLE: number;
+        const BROTLI_DECODER_NEEDS_MORE_INPUT: number;
+        const BROTLI_DECODER_NEEDS_MORE_OUTPUT: number;
+        const BROTLI_DECODER_NO_ERROR: number;
+        const BROTLI_DECODER_PARAM_DISABLE_RING_BUFFER_REALLOCATION: number;
+        const BROTLI_DECODER_PARAM_LARGE_WINDOW: number;
+        const BROTLI_DECODER_RESULT_ERROR: number;
+        const BROTLI_DECODER_RESULT_NEEDS_MORE_INPUT: number;
+        const BROTLI_DECODER_RESULT_NEEDS_MORE_OUTPUT: number;
+        const BROTLI_DECODER_RESULT_SUCCESS: number;
+        const BROTLI_DECODER_SUCCESS: number;
+        const BROTLI_DEFAULT_MODE: number;
+        const BROTLI_DEFAULT_QUALITY: number;
+        const BROTLI_DEFAULT_WINDOW: number;
+        const BROTLI_ENCODE: number;
+        const BROTLI_LARGE_MAX_WINDOW_BITS: number;
+        const BROTLI_MAX_INPUT_BLOCK_BITS: number;
+        const BROTLI_MAX_QUALITY: number;
+        const BROTLI_MAX_WINDOW_BITS: number;
+        const BROTLI_MIN_INPUT_BLOCK_BITS: number;
+        const BROTLI_MIN_QUALITY: number;
+        const BROTLI_MIN_WINDOW_BITS: number;
+        const BROTLI_MODE_FONT: number;
+        const BROTLI_MODE_GENERIC: number;
+        const BROTLI_MODE_TEXT: number;
+        const BROTLI_OPERATION_EMIT_METADATA: number;
+        const BROTLI_OPERATION_FINISH: number;
+        const BROTLI_OPERATION_FLUSH: number;
+        const BROTLI_OPERATION_PROCESS: number;
+        const BROTLI_PARAM_DISABLE_LITERAL_CONTEXT_MODELING: number;
+        const BROTLI_PARAM_LARGE_WINDOW: number;
+        const BROTLI_PARAM_LGBLOCK: number;
+        const BROTLI_PARAM_LGWIN: number;
+        const BROTLI_PARAM_MODE: number;
+        const BROTLI_PARAM_NDIRECT: number;
+        const BROTLI_PARAM_NPOSTFIX: number;
+        const BROTLI_PARAM_QUALITY: number;
+        const BROTLI_PARAM_SIZE_HINT: number;
+        const DEFLATE: number;
+        const DEFLATERAW: number;
+        const GUNZIP: number;
+        const GZIP: number;
+        const INFLATE: number;
+        const INFLATERAW: number;
+        const UNZIP: number;
+        // Allowed flush values.
+        const Z_NO_FLUSH: number;
+        const Z_PARTIAL_FLUSH: number;
+        const Z_SYNC_FLUSH: number;
+        const Z_FULL_FLUSH: number;
+        const Z_FINISH: number;
+        const Z_BLOCK: number;
+        const Z_TREES: number;
+        // Return codes for the compression/decompression functions.
+        // Negative values are errors, positive values are used for special but normal events.
+        const Z_OK: number;
+        const Z_STREAM_END: number;
+        const Z_NEED_DICT: number;
+        const Z_ERRNO: number;
+        const Z_STREAM_ERROR: number;
+        const Z_DATA_ERROR: number;
+        const Z_MEM_ERROR: number;
+        const Z_BUF_ERROR: number;
+        const Z_VERSION_ERROR: number;
+        // Compression levels.
+        const Z_NO_COMPRESSION: number;
+        const Z_BEST_SPEED: number;
+        const Z_BEST_COMPRESSION: number;
+        const Z_DEFAULT_COMPRESSION: number;
+        // Compression strategy.
+        const Z_FILTERED: number;
+        const Z_HUFFMAN_ONLY: number;
+        const Z_RLE: number;
+        const Z_FIXED: number;
+        const Z_DEFAULT_STRATEGY: number;
+        const Z_DEFAULT_WINDOWBITS: number;
+        const Z_MIN_WINDOWBITS: number;
+        const Z_MAX_WINDOWBITS: number;
+        const Z_MIN_CHUNK: number;
+        const Z_MAX_CHUNK: number;
+        const Z_DEFAULT_CHUNK: number;
+        const Z_MIN_MEMLEVEL: number;
+        const Z_MAX_MEMLEVEL: number;
+        const Z_DEFAULT_MEMLEVEL: number;
+        const Z_MIN_LEVEL: number;
+        const Z_MAX_LEVEL: number;
+        const Z_DEFAULT_LEVEL: number;
+        const ZLIB_VERNUM: number;
+    }
+    // Allowed flush values.
+    /** @deprecated Use `constants.Z_NO_FLUSH` */
+    const Z_NO_FLUSH: number;
+    /** @deprecated Use `constants.Z_PARTIAL_FLUSH` */
+    const Z_PARTIAL_FLUSH: number;
+    /** @deprecated Use `constants.Z_SYNC_FLUSH` */
+    const Z_SYNC_FLUSH: number;
+    /** @deprecated Use `constants.Z_FULL_FLUSH` */
+    const Z_FULL_FLUSH: number;
+    /** @deprecated Use `constants.Z_FINISH` */
+    const Z_FINISH: number;
+    /** @deprecated Use `constants.Z_BLOCK` */
+    const Z_BLOCK: number;
+    /** @deprecated Use `constants.Z_TREES` */
+    const Z_TREES: number;
+    // Return codes for the compression/decompression functions.
+    // Negative values are errors, positive values are used for special but normal events.
+    /** @deprecated Use `constants.Z_OK` */
+    const Z_OK: number;
+    /** @deprecated Use `constants.Z_STREAM_END` */
+    const Z_STREAM_END: number;
+    /** @deprecated Use `constants.Z_NEED_DICT` */
+    const Z_NEED_DICT: number;
+    /** @deprecated Use `constants.Z_ERRNO` */
+    const Z_ERRNO: number;
+    /** @deprecated Use `constants.Z_STREAM_ERROR` */
+    const Z_STREAM_ERROR: number;
+    /** @deprecated Use `constants.Z_DATA_ERROR` */
+    const Z_DATA_ERROR: number;
+    /** @deprecated Use `constants.Z_MEM_ERROR` */
+    const Z_MEM_ERROR: number;
+    /** @deprecated Use `constants.Z_BUF_ERROR` */
+    const Z_BUF_ERROR: number;
+    /** @deprecated Use `constants.Z_VERSION_ERROR` */
+    const Z_VERSION_ERROR: number;
+    // Compression levels.
+    /** @deprecated Use `constants.Z_NO_COMPRESSION` */
+    const Z_NO_COMPRESSION: number;
+    /** @deprecated Use `constants.Z_BEST_SPEED` */
+    const Z_BEST_SPEED: number;
+    /** @deprecated Use `constants.Z_BEST_COMPRESSION` */
+    const Z_BEST_COMPRESSION: number;
+    /** @deprecated Use `constants.Z_DEFAULT_COMPRESSION` */
+    const Z_DEFAULT_COMPRESSION: number;
+    // Compression strategy.
+    /** @deprecated Use `constants.Z_FILTERED` */
+    const Z_FILTERED: number;
+    /** @deprecated Use `constants.Z_HUFFMAN_ONLY` */
+    const Z_HUFFMAN_ONLY: number;
+    /** @deprecated Use `constants.Z_RLE` */
+    const Z_RLE: number;
+    /** @deprecated Use `constants.Z_FIXED` */
+    const Z_FIXED: number;
+    /** @deprecated Use `constants.Z_DEFAULT_STRATEGY` */
+    const Z_DEFAULT_STRATEGY: number;
+    /** @deprecated */
+    const Z_BINARY: number;
+    /** @deprecated */
+    const Z_TEXT: number;
+    /** @deprecated */
+    const Z_ASCII: number;
+    /** @deprecated  */
+    const Z_UNKNOWN: number;
+    /** @deprecated */
+    const Z_DEFLATED: number;
+}
+declare module 'node:zlib' {
+    export * from 'zlib';
+}

backend/node_modules/accepts/HISTORY.md

@@ -0,0 +1,236 @@
+1.3.7 / 2019-04-29
+==================
+
+  * deps: negotiator@0.6.2
+    - Fix sorting charset, encoding, and language with extra parameters
+
+1.3.6 / 2019-04-28
+==================
+
+  * deps: mime-types@~2.1.24
+    - deps: mime-db@~1.40.0
+
+1.3.5 / 2018-02-28
+==================
+
+  * deps: mime-types@~2.1.18
+    - deps: mime-db@~1.33.0
+
+1.3.4 / 2017-08-22
+==================
+
+  * deps: mime-types@~2.1.16
+    - deps: mime-db@~1.29.0
+
+1.3.3 / 2016-05-02
+==================
+
+  * deps: mime-types@~2.1.11
+    - deps: mime-db@~1.23.0
+  * deps: negotiator@0.6.1
+    - perf: improve `Accept` parsing speed
+    - perf: improve `Accept-Charset` parsing speed
+    - perf: improve `Accept-Encoding` parsing speed
+    - perf: improve `Accept-Language` parsing speed
+
+1.3.2 / 2016-03-08
+==================
+
+  * deps: mime-types@~2.1.10
+    - Fix extension of `application/dash+xml`
+    - Update primary extension for `audio/mp4`
+    - deps: mime-db@~1.22.0
+
+1.3.1 / 2016-01-19
+==================
+
+  * deps: mime-types@~2.1.9
+    - deps: mime-db@~1.21.0
+
+1.3.0 / 2015-09-29
+==================
+
+  * deps: mime-types@~2.1.7
+    - deps: mime-db@~1.19.0
+  * deps: negotiator@0.6.0
+    - Fix including type extensions in parameters in `Accept` parsing
+    - Fix parsing `Accept` parameters with quoted equals
+    - Fix parsing `Accept` parameters with quoted semicolons
+    - Lazy-load modules from main entry point
+    - perf: delay type concatenation until needed
+    - perf: enable strict mode
+    - perf: hoist regular expressions
+    - perf: remove closures getting spec properties
+    - perf: remove a closure from media type parsing
+    - perf: remove property delete from media type parsing
+
+1.2.13 / 2015-09-06
+===================
+
+  * deps: mime-types@~2.1.6
+    - deps: mime-db@~1.18.0
+
+1.2.12 / 2015-07-30
+===================
+
+  * deps: mime-types@~2.1.4
+    - deps: mime-db@~1.16.0
+
+1.2.11 / 2015-07-16
+===================
+
+  * deps: mime-types@~2.1.3
+    - deps: mime-db@~1.15.0
+
+1.2.10 / 2015-07-01
+===================
+
+  * deps: mime-types@~2.1.2
+    - deps: mime-db@~1.14.0
+
+1.2.9 / 2015-06-08
+==================
+
+  * deps: mime-types@~2.1.1
+    - perf: fix deopt during mapping
+
+1.2.8 / 2015-06-07
+==================
+
+  * deps: mime-types@~2.1.0
+    - deps: mime-db@~1.13.0
+  * perf: avoid argument reassignment & argument slice
+  * perf: avoid negotiator recursive construction
+  * perf: enable strict mode
+  * perf: remove unnecessary bitwise operator
+
+1.2.7 / 2015-05-10
+==================
+
+  * deps: negotiator@0.5.3
+    - Fix media type parameter matching to be case-insensitive
+
+1.2.6 / 2015-05-07
+==================
+
+  * deps: mime-types@~2.0.11
+    - deps: mime-db@~1.9.1
+  * deps: negotiator@0.5.2
+    - Fix comparing media types with quoted values
+    - Fix splitting media types with quoted commas
+
+1.2.5 / 2015-03-13
+==================
+
+  * deps: mime-types@~2.0.10
+    - deps: mime-db@~1.8.0
+
+1.2.4 / 2015-02-14
+==================
+
+  * Support Node.js 0.6
+  * deps: mime-types@~2.0.9
+    - deps: mime-db@~1.7.0
+  * deps: negotiator@0.5.1
+    - Fix preference sorting to be stable for long acceptable lists
+
+1.2.3 / 2015-01-31
+==================
+
+  * deps: mime-types@~2.0.8
+    - deps: mime-db@~1.6.0
+
+1.2.2 / 2014-12-30
+==================
+
+  * deps: mime-types@~2.0.7
+    - deps: mime-db@~1.5.0
+
+1.2.1 / 2014-12-30
+==================
+
+  * deps: mime-types@~2.0.5
+    - deps: mime-db@~1.3.1
+
+1.2.0 / 2014-12-19
+==================
+
+  * deps: negotiator@0.5.0
+    - Fix list return order when large accepted list
+    - Fix missing identity encoding when q=0 exists
+    - Remove dynamic building of Negotiator class
+
+1.1.4 / 2014-12-10
+==================
+
+  * deps: mime-types@~2.0.4
+    - deps: mime-db@~1.3.0
+
+1.1.3 / 2014-11-09
+==================
+
+  * deps: mime-types@~2.0.3
+    - deps: mime-db@~1.2.0
+
+1.1.2 / 2014-10-14
+==================
+
+  * deps: negotiator@0.4.9
+    - Fix error when media type has invalid parameter
+
+1.1.1 / 2014-09-28
+==================
+
+  * deps: mime-types@~2.0.2
+    - deps: mime-db@~1.1.0
+  * deps: negotiator@0.4.8
+    - Fix all negotiations to be case-insensitive
+    - Stable sort preferences of same quality according to client order
+
+1.1.0 / 2014-09-02
+==================
+
+  * update `mime-types`
+
+1.0.7 / 2014-07-04
+==================
+
+  * Fix wrong type returned from `type` when match after unknown extension
+
+1.0.6 / 2014-06-24
+==================
+
+  * deps: negotiator@0.4.7
+
+1.0.5 / 2014-06-20
+==================
+
+ * fix crash when unknown extension given
+
+1.0.4 / 2014-06-19
+==================
+
+  * use `mime-types`
+
+1.0.3 / 2014-06-11
+==================
+
+  * deps: negotiator@0.4.6
+    - Order by specificity when quality is the same
+
+1.0.2 / 2014-05-29
+==================
+
+  * Fix interpretation when header not in request
+  * deps: pin negotiator@0.4.5
+
+1.0.1 / 2014-01-18
+==================
+
+  * Identity encoding isn't always acceptable
+  * deps: negotiator@~0.4.0
+
+1.0.0 / 2013-12-27
+==================
+
+  * Genesis

backend/node_modules/accepts/LICENSE

@@ -0,0 +1,23 @@
+(The MIT License)
+
+Copyright (c) 2014 Jonathan Ong <me@jongleberry.com>
+Copyright (c) 2015 Douglas Christopher Wilson <doug@somethingdoug.com>
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+'Software'), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

backend/node_modules/accepts/README.md

@@ -0,0 +1,142 @@
+# accepts
+
+[![NPM Version][npm-version-image]][npm-url]
+[![NPM Downloads][npm-downloads-image]][npm-url]
+[![Node.js Version][node-version-image]][node-version-url]
+[![Build Status][travis-image]][travis-url]
+[![Test Coverage][coveralls-image]][coveralls-url]
+
+Higher level content negotiation based on [negotiator](https://www.npmjs.com/package/negotiator).
+Extracted from [koa](https://www.npmjs.com/package/koa) for general use.
+
+In addition to negotiator, it allows:
+
+- Allows types as an array or arguments list, ie `(['text/html', 'application/json'])`
+  as well as `('text/html', 'application/json')`.
+- Allows type shorthands such as `json`.
+- Returns `false` when no types match
+- Treats non-existent headers as `*`
+
+## Installation
+
+This is a [Node.js](https://nodejs.org/en/) module available through the
+[npm registry](https://www.npmjs.com/). Installation is done using the
+[`npm install` command](https://docs.npmjs.com/getting-started/installing-npm-packages-locally):
+
+```sh
+$ npm install accepts
+```
+
+## API
+
+<!-- eslint-disable no-unused-vars -->
+
+```js
+var accepts = require('accepts')
+```
+
+### accepts(req)
+
+Create a new `Accepts` object for the given `req`.
+
+#### .charset(charsets)
+
+Return the first accepted charset. If nothing in `charsets` is accepted,
+then `false` is returned.
+
+#### .charsets()
+
+Return the charsets that the request accepts, in the order of the client's
+preference (most preferred first).
+
+#### .encoding(encodings)
+
+Return the first accepted encoding. If nothing in `encodings` is accepted,
+then `false` is returned.
+
+#### .encodings()
+
+Return the encodings that the request accepts, in the order of the client's
+preference (most preferred first).
+
+#### .language(languages)
+
+Return the first accepted language. If nothing in `languages` is accepted,
+then `false` is returned.
+
+#### .languages()
+
+Return the languages that the request accepts, in the order of the client's
+preference (most preferred first).
+
+#### .type(types)
+
+Return the first accepted type (and it is returned as the same text as what
+appears in the `types` array). If nothing in `types` is accepted, then `false`
+is returned.
+
+The `types` array can contain full MIME types or file extensions. Any value
+that is not a full MIME types is passed to `require('mime-types').lookup`.
+
+#### .types()
+
+Return the types that the request accepts, in the order of the client's
+preference (most preferred first).
+
+## Examples
+
+### Simple type negotiation
+
+This simple example shows how to use `accepts` to return a different typed
+respond body based on what the client wants to accept. The server lists it's
+preferences in order and will get back the best match between the client and
+server.
+
+```js
+var accepts = require('accepts')
+var http = require('http')
+
+function app (req, res) {
+  var accept = accepts(req)
+
+  // the order of this list is significant; should be server preferred order
+  switch (accept.type(['json', 'html'])) {
+    case 'json':
+      res.setHeader('Content-Type', 'application/json')
+      res.write('{"hello":"world!"}')
+      break
+    case 'html':
+      res.setHeader('Content-Type', 'text/html')
+      res.write('<b>hello, world!</b>')
+      break
+    default:
+      // the fallback is text/plain, so no need to specify it above
+      res.setHeader('Content-Type', 'text/plain')
+      res.write('hello, world!')
+      break
+  }
+
+  res.end()
+}
+
+http.createServer(app).listen(3000)
+```
+
+You can test this out with the cURL program:
+```sh
+curl -I -H'Accept: text/html' http://localhost:3000/
+```
+
+## License
+
+[MIT](LICENSE)
+
+[coveralls-image]: https://badgen.net/coveralls/c/github/jshttp/accepts/master
+[coveralls-url]: https://coveralls.io/r/jshttp/accepts?branch=master
+[node-version-image]: https://badgen.net/npm/node/accepts
+[node-version-url]: https://nodejs.org/en/download
+[npm-downloads-image]: https://badgen.net/npm/dm/accepts
+[npm-url]: https://npmjs.org/package/accepts
+[npm-version-image]: https://badgen.net/npm/v/accepts
+[travis-image]: https://badgen.net/travis/jshttp/accepts/master
+[travis-url]: https://travis-ci.org/jshttp/accepts

backend/node_modules/accepts/index.js

@@ -0,0 +1,238 @@
+/*!
+ * accepts
+ * Copyright(c) 2014 Jonathan Ong
+ * Copyright(c) 2015 Douglas Christopher Wilson
+ * MIT Licensed
+ */
+
+'use strict'
+
+/**
+ * Module dependencies.
+ * @private
+ */
+
+var Negotiator = require('negotiator')
+var mime = require('mime-types')
+
+/**
+ * Module exports.
+ * @public
+ */
+
+module.exports = Accepts
+
+/**
+ * Create a new Accepts object for the given req.
+ *
+ * @param {object} req
+ * @public
+ */
+
+function Accepts (req) {
+  if (!(this instanceof Accepts)) {
+    return new Accepts(req)
+  }
+
+  this.headers = req.headers
+  this.negotiator = new Negotiator(req)
+}
+
+/**
+ * Check if the given `type(s)` is acceptable, returning
+ * the best match when true, otherwise `undefined`, in which
+ * case you should respond with 406 "Not Acceptable".
+ *
+ * The `type` value may be a single mime type string
+ * such as "application/json", the extension name
+ * such as "json" or an array `["json", "html", "text/plain"]`. When a list
+ * or array is given the _best_ match, if any is returned.
+ *
+ * Examples:
+ *
+ *     // Accept: text/html
+ *     this.types('html');
+ *     // => "html"
+ *
+ *     // Accept: text/*, application/json
+ *     this.types('html');
+ *     // => "html"
+ *     this.types('text/html');
+ *     // => "text/html"
+ *     this.types('json', 'text');
+ *     // => "json"
+ *     this.types('application/json');
+ *     // => "application/json"
+ *
+ *     // Accept: text/*, application/json
+ *     this.types('image/png');
+ *     this.types('png');
+ *     // => undefined
+ *
+ *     // Accept: text/*;q=.5, application/json
+ *     this.types(['html', 'json']);
+ *     this.types('html', 'json');
+ *     // => "json"
+ *
+ * @param {String|Array} types...
+ * @return {String|Array|Boolean}
+ * @public
+ */
+
+Accepts.prototype.type =
+Accepts.prototype.types = function (types_) {
+  var types = types_
+
+  // support flattened arguments
+  if (types && !Array.isArray(types)) {
+    types = new Array(arguments.length)
+    for (var i = 0; i < types.length; i++) {
+      types[i] = arguments[i]
+    }
+  }
+
+  // no types, return all requested types
+  if (!types || types.length === 0) {
+    return this.negotiator.mediaTypes()
+  }
+
+  // no accept header, return first given type
+  if (!this.headers.accept) {
+    return types[0]
+  }
+
+  var mimes = types.map(extToMime)
+  var accepts = this.negotiator.mediaTypes(mimes.filter(validMime))
+  var first = accepts[0]
+
+  return first
+    ? types[mimes.indexOf(first)]
+    : false
+}
+
+/**
+ * Return accepted encodings or best fit based on `encodings`.
+ *
+ * Given `Accept-Encoding: gzip, deflate`
+ * an array sorted by quality is returned:
+ *
+ *     ['gzip', 'deflate']
+ *
+ * @param {String|Array} encodings...
+ * @return {String|Array}
+ * @public
+ */
+
+Accepts.prototype.encoding =
+Accepts.prototype.encodings = function (encodings_) {
+  var encodings = encodings_
+
+  // support flattened arguments
+  if (encodings && !Array.isArray(encodings)) {
+    encodings = new Array(arguments.length)
+    for (var i = 0; i < encodings.length; i++) {
+      encodings[i] = arguments[i]
+    }
+  }
+
+  // no encodings, return all requested encodings
+  if (!encodings || encodings.length === 0) {
+    return this.negotiator.encodings()
+  }
+
+  return this.negotiator.encodings(encodings)[0] || false
+}
+
+/**
+ * Return accepted charsets or best fit based on `charsets`.
+ *
+ * Given `Accept-Charset: utf-8, iso-8859-1;q=0.2, utf-7;q=0.5`
+ * an array sorted by quality is returned:
+ *
+ *     ['utf-8', 'utf-7', 'iso-8859-1']
+ *
+ * @param {String|Array} charsets...
+ * @return {String|Array}
+ * @public
+ */
+
+Accepts.prototype.charset =
+Accepts.prototype.charsets = function (charsets_) {
+  var charsets = charsets_
+
+  // support flattened arguments
+  if (charsets && !Array.isArray(charsets)) {
+    charsets = new Array(arguments.length)
+    for (var i = 0; i < charsets.length; i++) {
+      charsets[i] = arguments[i]
+    }
+  }
+
+  // no charsets, return all requested charsets
+  if (!charsets || charsets.length === 0) {
+    return this.negotiator.charsets()
+  }
+
+  return this.negotiator.charsets(charsets)[0] || false
+}
+
+/**
+ * Return accepted languages or best fit based on `langs`.
+ *
+ * Given `Accept-Language: en;q=0.8, es, pt`
+ * an array sorted by quality is returned:
+ *
+ *     ['es', 'pt', 'en']
+ *
+ * @param {String|Array} langs...
+ * @return {Array|String}
+ * @public
+ */
+
+Accepts.prototype.lang =
+Accepts.prototype.langs =
+Accepts.prototype.language =
+Accepts.prototype.languages = function (languages_) {
+  var languages = languages_
+
+  // support flattened arguments
+  if (languages && !Array.isArray(languages)) {
+    languages = new Array(arguments.length)
+    for (var i = 0; i < languages.length; i++) {
+      languages[i] = arguments[i]
+    }
+  }
+
+  // no languages, return all requested languages
+  if (!languages || languages.length === 0) {
+    return this.negotiator.languages()
+  }
+
+  return this.negotiator.languages(languages)[0] || false
+}
+
+/**
+ * Convert extnames to mime.
+ *
+ * @param {String} type
+ * @return {String}
+ * @private
+ */
+
+function extToMime (type) {
+  return type.indexOf('/') === -1
+    ? mime.lookup(type)
+    : type
+}
+
+/**
+ * Check if mime is valid.
+ *
+ * @param {String} type
+ * @return {String}
+ * @private
+ */
+
+function validMime (type) {
+  return typeof type === 'string'
+}

backend/node_modules/accepts/package.json

@@ -0,0 +1,47 @@
+{
+  "name": "accepts",
+  "description": "Higher-level content negotiation",
+  "version": "1.3.7",
+  "contributors": [
+    "Douglas Christopher Wilson <doug@somethingdoug.com>",
+    "Jonathan Ong <me@jongleberry.com> (http://jongleberry.com)"
+  ],
+  "license": "MIT",
+  "repository": "jshttp/accepts",
+  "dependencies": {
+    "mime-types": "~2.1.24",
+    "negotiator": "0.6.2"
+  },
+  "devDependencies": {
+    "deep-equal": "1.0.1",
+    "eslint": "5.16.0",
+    "eslint-config-standard": "12.0.0",
+    "eslint-plugin-import": "2.17.2",
+    "eslint-plugin-markdown": "1.0.0",
+    "eslint-plugin-node": "8.0.1",
+    "eslint-plugin-promise": "4.1.1",
+    "eslint-plugin-standard": "4.0.0",
+    "mocha": "6.1.4",
+    "nyc": "14.0.0"
+  },
+  "files": [
+    "LICENSE",
+    "HISTORY.md",
+    "index.js"
+  ],
+  "engines": {
+    "node": ">= 0.6"
+  },
+  "scripts": {
+    "lint": "eslint --plugin markdown --ext js,md .",
+    "test": "mocha --reporter spec --check-leaks --bail test/",
+    "test-cov": "nyc --reporter=html --reporter=text npm test",
+    "test-travis": "nyc --reporter=text npm test"
+  },
+  "keywords": [
+    "content",
+    "negotiation",
+    "accept",
+    "accepts"
+  ]
+}

backend/node_modules/array-flatten/LICENSE

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2014 Blake Embrey (hello@blakeembrey.com)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

backend/node_modules/array-flatten/README.md

@@ -0,0 +1,43 @@
+# Array Flatten
+
+[![NPM version][npm-image]][npm-url]
+[![NPM downloads][downloads-image]][downloads-url]
+[![Build status][travis-image]][travis-url]
+[![Test coverage][coveralls-image]][coveralls-url]
+
+> Flatten an array of nested arrays into a single flat array. Accepts an optional depth.
+
+## Installation
+
+```
+npm install array-flatten --save
+```
+
+## Usage
+
+```javascript
+var flatten = require('array-flatten')
+
+flatten([1, [2, [3, [4, [5], 6], 7], 8], 9])
+//=> [1, 2, 3, 4, 5, 6, 7, 8, 9]
+
+flatten([1, [2, [3, [4, [5], 6], 7], 8], 9], 2)
+//=> [1, 2, 3, [4, [5], 6], 7, 8, 9]
+
+(function () {
+  flatten(arguments) //=> [1, 2, 3]
+})(1, [2, 3])
+```
+
+## License
+
+MIT
+
+[npm-image]: https://img.shields.io/npm/v/array-flatten.svg?style=flat
+[npm-url]: https://npmjs.org/package/array-flatten
+[downloads-image]: https://img.shields.io/npm/dm/array-flatten.svg?style=flat
+[downloads-url]: https://npmjs.org/package/array-flatten
+[travis-image]: https://img.shields.io/travis/blakeembrey/array-flatten.svg?style=flat
+[travis-url]: https://travis-ci.org/blakeembrey/array-flatten
+[coveralls-image]: https://img.shields.io/coveralls/blakeembrey/array-flatten.svg?style=flat
+[coveralls-url]: https://coveralls.io/r/blakeembrey/array-flatten?branch=master

backend/node_modules/array-flatten/array-flatten.js

@@ -0,0 +1,64 @@
+'use strict'
+
+/**
+ * Expose `arrayFlatten`.
+ */
+module.exports = arrayFlatten
+
+/**
+ * Recursive flatten function with depth.
+ *
+ * @param  {Array}  array
+ * @param  {Array}  result
+ * @param  {Number} depth
+ * @return {Array}
+ */
+function flattenWithDepth (array, result, depth) {
+  for (var i = 0; i < array.length; i++) {
+    var value = array[i]
+
+    if (depth > 0 && Array.isArray(value)) {
+      flattenWithDepth(value, result, depth - 1)
+    } else {
+      result.push(value)
+    }
+  }
+
+  return result
+}
+
+/**
+ * Recursive flatten function. Omitting depth is slightly faster.
+ *
+ * @param  {Array} array
+ * @param  {Array} result
+ * @return {Array}
+ */
+function flattenForever (array, result) {
+  for (var i = 0; i < array.length; i++) {
+    var value = array[i]
+
+    if (Array.isArray(value)) {
+      flattenForever(value, result)
+    } else {
+      result.push(value)
+    }
+  }
+
+  return result
+}
+
+/**
+ * Flatten an array, with the ability to define a depth.
+ *
+ * @param  {Array}  array
+ * @param  {Number} depth
+ * @return {Array}
+ */
+function arrayFlatten (array, depth) {
+  if (depth == null) {
+    return flattenForever(array, [])
+  }
+
+  return flattenWithDepth(array, [], depth)
+}

backend/node_modules/array-flatten/package.json

@@ -0,0 +1,39 @@
+{
+  "name": "array-flatten",
+  "version": "1.1.1",
+  "description": "Flatten an array of nested arrays into a single flat array",
+  "main": "array-flatten.js",
+  "files": [
+    "array-flatten.js",
+    "LICENSE"
+  ],
+  "scripts": {
+    "test": "istanbul cover _mocha -- -R spec"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/blakeembrey/array-flatten.git"
+  },
+  "keywords": [
+    "array",
+    "flatten",
+    "arguments",
+    "depth"
+  ],
+  "author": {
+    "name": "Blake Embrey",
+    "email": "hello@blakeembrey.com",
+    "url": "http://blakeembrey.me"
+  },
+  "license": "MIT",
+  "bugs": {
+    "url": "https://github.com/blakeembrey/array-flatten/issues"
+  },
+  "homepage": "https://github.com/blakeembrey/array-flatten",
+  "devDependencies": {
+    "istanbul": "^0.3.13",
+    "mocha": "^2.2.4",
+    "pre-commit": "^1.0.7",
+    "standard": "^3.7.3"
+  }
+}

backend/node_modules/base64-arraybuffer/CHANGELOG.md

@@ -0,0 +1,19 @@
+# Changelog
+
+All notable changes to this project will be documented in this file. See [standard-version](https://github.com/conventional-changelog/standard-version) for commit guidelines.
+
+## [1.0.1](https://github.com/niklasvh/base64-arraybuffer/compare/v1.0.0...v1.0.1) (2021-08-10)
+
+
+### fix
+
+* make lib loadable on ie9 (#30) ([a618d14](https://github.com/niklasvh/base64-arraybuffer/commit/a618d14d323f4eb230321a3609bfbc9f23f430c0)), closes [#30](https://github.com/niklasvh/base64-arraybuffer/issues/30)
+
+
+
+# [1.0.0](https://github.com/niklasvh/base64-arraybuffer/compare/v0.2.0...v1.0.0) (2021-08-10)
+
+
+### docs
+
+* update readme (#29) ([0a0253d](https://github.com/niklasvh/base64-arraybuffer/commit/0a0253dcc2e3f01a1f6d04fa81d578f714fce27f)), closes [#29](https://github.com/niklasvh/base64-arraybuffer/issues/29)

backend/node_modules/base64-arraybuffer/LICENSE

@@ -0,0 +1,22 @@
+Copyright (c) 2012 Niklas von Hertzen
+
+Permission is hereby granted, free of charge, to any person
+obtaining a copy of this software and associated documentation
+files (the "Software"), to deal in the Software without
+restriction, including without limitation the rights to use,
+copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following
+conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.

backend/node_modules/base64-arraybuffer/README.md

@@ -0,0 +1,27 @@
+# base64-arraybuffer
+
+![CI](https://github.com/niklasvh/base64-arraybuffer/workflows/CI/badge.svg?branch=master)
+[![NPM Downloads](https://img.shields.io/npm/dm/base64-arraybuffer.svg)](https://www.npmjs.org/package/base64-arraybuffer)
+[![NPM Version](https://img.shields.io/npm/v/base64-arraybuffer.svg)](https://www.npmjs.org/package/base64-arraybuffer)
+
+Encode/decode base64 data into ArrayBuffers
+
+### Installing
+You can install the module via npm:
+
+    npm install base64-arraybuffer
+  
+## API
+The library encodes and decodes base64 to and from ArrayBuffers
+
+ - __encode(buffer)__ - Encodes `ArrayBuffer` into base64 string
+ - __decode(str)__ - Decodes base64 string to `ArrayBuffer`
+
+### Testing
+You can run the test suite with:
+
+    npm test
+
+## License
+Copyright (c) 2012 Niklas von Hertzen
+Licensed under the MIT license.

backend/node_modules/base64-arraybuffer/dist/base64-arraybuffer.es5.js

@@ -0,0 +1,50 @@
+/*
+ * base64-arraybuffer 1.0.1 <https://github.com/niklasvh/base64-arraybuffer>
+ * Copyright (c) 2021 Niklas von Hertzen <https://hertzen.com>
+ * Released under MIT License
+ */
+var chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
+// Use a lookup table to find the index.
+var lookup = typeof Uint8Array === 'undefined' ? [] : new Uint8Array(256);
+for (var i = 0; i < chars.length; i++) {
+    lookup[chars.charCodeAt(i)] = i;
+}
+var encode = function (arraybuffer) {
+    var bytes = new Uint8Array(arraybuffer), i, len = bytes.length, base64 = '';
+    for (i = 0; i < len; i += 3) {
+        base64 += chars[bytes[i] >> 2];
+        base64 += chars[((bytes[i] & 3) << 4) | (bytes[i + 1] >> 4)];
+        base64 += chars[((bytes[i + 1] & 15) << 2) | (bytes[i + 2] >> 6)];
+        base64 += chars[bytes[i + 2] & 63];
+    }
+    if (len % 3 === 2) {
+        base64 = base64.substring(0, base64.length - 1) + '=';
+    }
+    else if (len % 3 === 1) {
+        base64 = base64.substring(0, base64.length - 2) + '==';
+    }
+    return base64;
+};
+var decode = function (base64) {
+    var bufferLength = base64.length * 0.75, len = base64.length, i, p = 0, encoded1, encoded2, encoded3, encoded4;
+    if (base64[base64.length - 1] === '=') {
+        bufferLength--;
+        if (base64[base64.length - 2] === '=') {
+            bufferLength--;
+        }
+    }
+    var arraybuffer = new ArrayBuffer(bufferLength), bytes = new Uint8Array(arraybuffer);
+    for (i = 0; i < len; i += 4) {
+        encoded1 = lookup[base64.charCodeAt(i)];
+        encoded2 = lookup[base64.charCodeAt(i + 1)];
+        encoded3 = lookup[base64.charCodeAt(i + 2)];
+        encoded4 = lookup[base64.charCodeAt(i + 3)];
+        bytes[p++] = (encoded1 << 2) | (encoded2 >> 4);
+        bytes[p++] = ((encoded2 & 15) << 4) | (encoded3 >> 2);
+        bytes[p++] = ((encoded3 & 3) << 6) | (encoded4 & 63);
+    }
+    return arraybuffer;
+};
+
+export { decode, encode };
+//# sourceMappingURL=base64-arraybuffer.es5.js.map

backend/node_modules/base64-arraybuffer/dist/base64-arraybuffer.umd.js

@@ -0,0 +1,61 @@
+/*
+ * base64-arraybuffer 1.0.1 <https://github.com/niklasvh/base64-arraybuffer>
+ * Copyright (c) 2021 Niklas von Hertzen <https://hertzen.com>
+ * Released under MIT License
+ */
+(function (global, factory) {
+    typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
+    typeof define === 'function' && define.amd ? define(['exports'], factory) :
+    (global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global['base64-arraybuffer'] = {}));
+}(this, (function (exports) { 'use strict';
+
+    var chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
+    // Use a lookup table to find the index.
+    var lookup = typeof Uint8Array === 'undefined' ? [] : new Uint8Array(256);
+    for (var i = 0; i < chars.length; i++) {
+        lookup[chars.charCodeAt(i)] = i;
+    }
+    var encode = function (arraybuffer) {
+        var bytes = new Uint8Array(arraybuffer), i, len = bytes.length, base64 = '';
+        for (i = 0; i < len; i += 3) {
+            base64 += chars[bytes[i] >> 2];
+            base64 += chars[((bytes[i] & 3) << 4) | (bytes[i + 1] >> 4)];
+            base64 += chars[((bytes[i + 1] & 15) << 2) | (bytes[i + 2] >> 6)];
+            base64 += chars[bytes[i + 2] & 63];
+        }
+        if (len % 3 === 2) {
+            base64 = base64.substring(0, base64.length - 1) + '=';
+        }
+        else if (len % 3 === 1) {
+            base64 = base64.substring(0, base64.length - 2) + '==';
+        }
+        return base64;
+    };
+    var decode = function (base64) {
+        var bufferLength = base64.length * 0.75, len = base64.length, i, p = 0, encoded1, encoded2, encoded3, encoded4;
+        if (base64[base64.length - 1] === '=') {
+            bufferLength--;
+            if (base64[base64.length - 2] === '=') {
+                bufferLength--;
+            }
+        }
+        var arraybuffer = new ArrayBuffer(bufferLength), bytes = new Uint8Array(arraybuffer);
+        for (i = 0; i < len; i += 4) {
+            encoded1 = lookup[base64.charCodeAt(i)];
+            encoded2 = lookup[base64.charCodeAt(i + 1)];
+            encoded3 = lookup[base64.charCodeAt(i + 2)];
+            encoded4 = lookup[base64.charCodeAt(i + 3)];
+            bytes[p++] = (encoded1 << 2) | (encoded2 >> 4);
+            bytes[p++] = ((encoded2 & 15) << 4) | (encoded3 >> 2);
+            bytes[p++] = ((encoded3 & 3) << 6) | (encoded4 & 63);
+        }
+        return arraybuffer;
+    };
+
+    exports.decode = decode;
+    exports.encode = encode;
+
+    Object.defineProperty(exports, '__esModule', { value: true });
+
+})));
+//# sourceMappingURL=base64-arraybuffer.umd.js.map

backend/node_modules/base64-arraybuffer/dist/lib/index.js

@@ -0,0 +1,48 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.decode = exports.encode = void 0;
+var chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
+// Use a lookup table to find the index.
+var lookup = typeof Uint8Array === 'undefined' ? [] : new Uint8Array(256);
+for (var i = 0; i < chars.length; i++) {
+    lookup[chars.charCodeAt(i)] = i;
+}
+var encode = function (arraybuffer) {
+    var bytes = new Uint8Array(arraybuffer), i, len = bytes.length, base64 = '';
+    for (i = 0; i < len; i += 3) {
+        base64 += chars[bytes[i] >> 2];
+        base64 += chars[((bytes[i] & 3) << 4) | (bytes[i + 1] >> 4)];
+        base64 += chars[((bytes[i + 1] & 15) << 2) | (bytes[i + 2] >> 6)];
+        base64 += chars[bytes[i + 2] & 63];
+    }
+    if (len % 3 === 2) {
+        base64 = base64.substring(0, base64.length - 1) + '=';
+    }
+    else if (len % 3 === 1) {
+        base64 = base64.substring(0, base64.length - 2) + '==';
+    }
+    return base64;
+};
+exports.encode = encode;
+var decode = function (base64) {
+    var bufferLength = base64.length * 0.75, len = base64.length, i, p = 0, encoded1, encoded2, encoded3, encoded4;
+    if (base64[base64.length - 1] === '=') {
+        bufferLength--;
+        if (base64[base64.length - 2] === '=') {
+            bufferLength--;
+        }
+    }
+    var arraybuffer = new ArrayBuffer(bufferLength), bytes = new Uint8Array(arraybuffer);
+    for (i = 0; i < len; i += 4) {
+        encoded1 = lookup[base64.charCodeAt(i)];
+        encoded2 = lookup[base64.charCodeAt(i + 1)];
+        encoded3 = lookup[base64.charCodeAt(i + 2)];
+        encoded4 = lookup[base64.charCodeAt(i + 3)];
+        bytes[p++] = (encoded1 << 2) | (encoded2 >> 4);
+        bytes[p++] = ((encoded2 & 15) << 4) | (encoded3 >> 2);
+        bytes[p++] = ((encoded3 & 3) << 6) | (encoded4 & 63);
+    }
+    return arraybuffer;
+};
+exports.decode = decode;
+//# sourceMappingURL=index.js.map

backend/node_modules/base64-arraybuffer/dist/types/index.d.ts

@@ -0,0 +1,2 @@
+export declare const encode: (arraybuffer: ArrayBuffer) => string;
+export declare const decode: (base64: string) => ArrayBuffer;

backend/node_modules/base64-arraybuffer/package.json

@@ -0,0 +1,54 @@
+{
+  "name": "base64-arraybuffer",
+  "description": "Encode/decode base64 data into ArrayBuffers",
+  "main": "dist/base64-arraybuffer.umd.js",
+  "module": "dist/base64-arraybuffer.es5.js",
+  "typings": "dist/types/index.d.ts",
+  "version": "1.0.1",
+  "homepage": "https://github.com/niklasvh/base64-arraybuffer",
+  "author": {
+    "name": "Niklas von Hertzen",
+    "email": "niklasvh@gmail.com",
+    "url": "https://hertzen.com"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/niklasvh/base64-arraybuffer"
+  },
+  "bugs": {
+    "url": "https://github.com/niklasvh/base64-arraybuffer/issues"
+  },
+  "license": "MIT",
+  "engines": {
+    "node": ">= 0.6.0"
+  },
+  "scripts": {
+    "prebuild": "rimraf dist/",
+    "build": "tsc --module commonjs && rollup -c rollup.config.ts",
+    "format": "prettier --write \"{src,test}/**/*.ts\"",
+    "lint": "tslint -c tslint.json --project tsconfig.json -t codeFrame src/**/*.ts test/**/*.ts",
+    "mocha": "mocha --require ts-node/register test/*.ts",
+    "test": "npm run lint && npm run mocha",
+    "release": "standard-version"
+  },
+  "devDependencies": {
+    "@rollup/plugin-commonjs": "^19.0.0",
+    "@rollup/plugin-node-resolve": "^13.0.0",
+    "@rollup/plugin-typescript": "^8.2.1",
+    "@types/mocha": "^8.2.2",
+    "@types/node": "^16.0.0",
+    "mocha": "9.0.2",
+    "prettier": "^2.3.2",
+    "rimraf": "3.0.2",
+    "rollup": "^2.52.7",
+    "rollup-plugin-json": "^4.0.0",
+    "rollup-plugin-sourcemaps": "^0.6.3",
+    "standard-version": "^9.3.0",
+    "ts-node": "^10.0.0",
+    "tslib": "^2.3.0",
+    "tslint": "^6.1.3",
+    "tslint-config-prettier": "^1.18.0",
+    "typescript": "^4.3.5"
+  },
+  "keywords": []
+}

backend/node_modules/base64-arraybuffer/rollup.config.ts

@@ -0,0 +1,40 @@
+import resolve from '@rollup/plugin-node-resolve';
+import commonjs from '@rollup/plugin-commonjs';
+import sourceMaps from 'rollup-plugin-sourcemaps';
+import typescript from '@rollup/plugin-typescript';
+import json from 'rollup-plugin-json';
+
+const pkg = require('./package.json');
+
+const banner = `/*
+ * ${pkg.name} ${pkg.version} <${pkg.homepage}>
+ * Copyright (c) ${(new Date()).getFullYear()} ${pkg.author.name} <${pkg.author.url}>
+ * Released under ${pkg.license} License
+ */`;
+
+export default {
+    input: `src/index.ts`,
+    output: [
+        { file: pkg.main, name: pkg.name, format: 'umd', banner, sourcemap: true },
+        { file: pkg.module, format: 'esm', banner, sourcemap: true },
+    ],
+    external: [],
+    watch: {
+        include: 'src/**',
+    },
+    plugins: [
+        // Allow node_modules resolution, so you can use 'external' to control
+        // which external modules to include in the bundle
+        // https://github.com/rollup/rollup-plugin-node-resolve#usage
+        resolve(),
+        // Allow json resolution
+        json(),
+        // Compile TypeScript files
+        typescript(),
+        // Allow bundling cjs modules (unlike webpack, rollup doesn't understand cjs)
+        commonjs(),
+
+        // Resolve source maps to the original source
+        sourceMaps(),
+    ],
+}

backend/node_modules/base64id/CHANGELOG.md

@@ -0,0 +1,16 @@
+# [2.0.0](https://github.com/faeldt/base64id/compare/1.0.0...2.0.0) (2019-05-27)
+
+
+### Code Refactoring
+
+* **buffer:** replace deprecated Buffer constructor usage ([#11](https://github.com/faeldt/base64id/issues/11)) ([ccfba54](https://github.com/faeldt/base64id/commit/ccfba54))
+
+
+### BREAKING CHANGES
+
+* **buffer:** drop support for Node.js ≤ 4.4.x and 5.0.0 - 5.9.x
+
+See: https://nodejs.org/en/docs/guides/buffer-constructor-deprecation/
+
+
+

backend/node_modules/base64id/LICENSE

@@ -0,0 +1,22 @@
+(The MIT License)
+
+Copyright (c) 2012-2016 Kristian Faeldt <faeldt_kristian@cyberagent.co.jp>
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+'Software'), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

backend/node_modules/base64id/README.md

@@ -0,0 +1,18 @@
+base64id
+========
+
+Node.js module that generates a base64 id.
+
+Uses crypto.randomBytes when available, falls back to unsafe methods for node.js <= 0.4.
+
+To increase performance, random bytes are buffered to minimize the number of synchronous calls to crypto.randomBytes.
+
+## Installation
+
+   $ npm install base64id
+
+## Usage
+
+   var base64id = require('base64id');
+
+   var id = base64id.generateId();

backend/node_modules/base64id/lib/base64id.js

@@ -0,0 +1,103 @@
+/*!
+ * base64id v0.1.0
+ */
+
+/**
+ * Module dependencies
+ */
+
+var crypto = require('crypto');
+
+/**
+ * Constructor
+ */
+
+var Base64Id = function() { };
+
+/**
+ * Get random bytes
+ *
+ * Uses a buffer if available, falls back to crypto.randomBytes
+ */
+
+Base64Id.prototype.getRandomBytes = function(bytes) {
+
+  var BUFFER_SIZE = 4096
+  var self = this;  
+  
+  bytes = bytes || 12;
+
+  if (bytes > BUFFER_SIZE) {
+    return crypto.randomBytes(bytes);
+  }
+  
+  var bytesInBuffer = parseInt(BUFFER_SIZE/bytes);
+  var threshold = parseInt(bytesInBuffer*0.85);
+
+  if (!threshold) {
+    return crypto.randomBytes(bytes);
+  }
+
+  if (this.bytesBufferIndex == null) {
+     this.bytesBufferIndex = -1;
+  }
+
+  if (this.bytesBufferIndex == bytesInBuffer) {
+    this.bytesBuffer = null;
+    this.bytesBufferIndex = -1;
+  }
+
+  // No buffered bytes available or index above threshold
+  if (this.bytesBufferIndex == -1 || this.bytesBufferIndex > threshold) {
+     
+    if (!this.isGeneratingBytes) {
+      this.isGeneratingBytes = true;
+      crypto.randomBytes(BUFFER_SIZE, function(err, bytes) {
+        self.bytesBuffer = bytes;
+        self.bytesBufferIndex = 0;
+        self.isGeneratingBytes = false;
+      }); 
+    }
+    
+    // Fall back to sync call when no buffered bytes are available
+    if (this.bytesBufferIndex == -1) {
+      return crypto.randomBytes(bytes);
+    }
+  }
+  
+  var result = this.bytesBuffer.slice(bytes*this.bytesBufferIndex, bytes*(this.bytesBufferIndex+1)); 
+  this.bytesBufferIndex++; 
+  
+  return result;
+}
+
+/**
+ * Generates a base64 id
+ *
+ * (Original version from socket.io <http://socket.io>)
+ */
+
+Base64Id.prototype.generateId = function () {
+  var rand = Buffer.alloc(15); // multiple of 3 for base64
+  if (!rand.writeInt32BE) {
+    return Math.abs(Math.random() * Math.random() * Date.now() | 0).toString()
+      + Math.abs(Math.random() * Math.random() * Date.now() | 0).toString();
+  }
+  this.sequenceNumber = (this.sequenceNumber + 1) | 0;
+  rand.writeInt32BE(this.sequenceNumber, 11);
+  if (crypto.randomBytes) {
+    this.getRandomBytes(12).copy(rand);
+  } else {
+    // not secure for node 0.4
+    [0, 4, 8].forEach(function(i) {
+      rand.writeInt32BE(Math.random() * Math.pow(2, 32) | 0, i);
+    });
+  }
+  return rand.toString('base64').replace(/\//g, '_').replace(/\+/g, '-');
+};
+
+/**
+ * Export
+ */
+
+exports = module.exports = new Base64Id();

backend/node_modules/base64id/package.json

@@ -0,0 +1,13 @@
+{
+    "name": "base64id"
+  , "version": "2.0.0"
+  , "license": "MIT"
+  , "description": "Generates a base64 id"
+  , "author": "Kristian Faeldt <faeldt_kristian@cyberagent.co.jp>"
+  , "repository": {
+        "type": "git"
+      , "url": "https://github.com/faeldt/base64id.git"
+   }
+  , "main": "./lib/base64id.js"
+  , "engines": { "node": "^4.5.0 || >= 5.9" }
+}

backend/node_modules/body-parser/HISTORY.md

@@ -0,0 +1,624 @@
+1.19.1 / 2021-12-10
+===================
+
+  * deps: bytes@3.1.1
+  * deps: http-errors@1.8.1
+    - deps: inherits@2.0.4
+    - deps: toidentifier@1.0.1
+    - deps: setprototypeof@1.2.0
+  * deps: qs@6.9.6
+  * deps: raw-body@2.4.2
+    - deps: bytes@3.1.1
+    - deps: http-errors@1.8.1
+  * deps: safe-buffer@5.2.1
+  * deps: type-is@~1.6.18
+
+1.19.0 / 2019-04-25
+===================
+
+  * deps: bytes@3.1.0
+    - Add petabyte (`pb`) support
+  * deps: http-errors@1.7.2
+    - Set constructor name when possible
+    - deps: setprototypeof@1.1.1
+    - deps: statuses@'>= 1.5.0 < 2'
+  * deps: iconv-lite@0.4.24
+    - Added encoding MIK
+  * deps: qs@6.7.0
+    - Fix parsing array brackets after index
+  * deps: raw-body@2.4.0
+    - deps: bytes@3.1.0
+    - deps: http-errors@1.7.2
+    - deps: iconv-lite@0.4.24
+  * deps: type-is@~1.6.17
+    - deps: mime-types@~2.1.24
+    - perf: prevent internal `throw` on invalid type
+
+1.18.3 / 2018-05-14
+===================
+
+  * Fix stack trace for strict json parse error
+  * deps: depd@~1.1.2
+    - perf: remove argument reassignment
+  * deps: http-errors@~1.6.3
+    - deps: depd@~1.1.2
+    - deps: setprototypeof@1.1.0
+    - deps: statuses@'>= 1.3.1 < 2'
+  * deps: iconv-lite@0.4.23
+    - Fix loading encoding with year appended
+    - Fix deprecation warnings on Node.js 10+
+  * deps: qs@6.5.2
+  * deps: raw-body@2.3.3
+    - deps: http-errors@1.6.3
+    - deps: iconv-lite@0.4.23
+  * deps: type-is@~1.6.16
+    - deps: mime-types@~2.1.18
+
+1.18.2 / 2017-09-22
+===================
+
+  * deps: debug@2.6.9
+  * perf: remove argument reassignment
+
+1.18.1 / 2017-09-12
+===================
+
+  * deps: content-type@~1.0.4
+    - perf: remove argument reassignment
+    - perf: skip parameter parsing when no parameters
+  * deps: iconv-lite@0.4.19
+    - Fix ISO-8859-1 regression
+    - Update Windows-1255
+  * deps: qs@6.5.1
+    - Fix parsing & compacting very deep objects
+  * deps: raw-body@2.3.2
+    - deps: iconv-lite@0.4.19
+
+1.18.0 / 2017-09-08
+===================
+
+  * Fix JSON strict violation error to match native parse error
+  * Include the `body` property on verify errors
+  * Include the `type` property on all generated errors
+  * Use `http-errors` to set status code on errors
+  * deps: bytes@3.0.0
+  * deps: debug@2.6.8
+  * deps: depd@~1.1.1
+    - Remove unnecessary `Buffer` loading
+  * deps: http-errors@~1.6.2
+    - deps: depd@1.1.1
+  * deps: iconv-lite@0.4.18
+    - Add support for React Native
+    - Add a warning if not loaded as utf-8
+    - Fix CESU-8 decoding in Node.js 8
+    - Improve speed of ISO-8859-1 encoding
+  * deps: qs@6.5.0
+  * deps: raw-body@2.3.1
+    - Use `http-errors` for standard emitted errors
+    - deps: bytes@3.0.0
+    - deps: iconv-lite@0.4.18
+    - perf: skip buffer decoding on overage chunk
+  * perf: prevent internal `throw` when missing charset
+
+1.17.2 / 2017-05-17
+===================
+
+  * deps: debug@2.6.7
+    - Fix `DEBUG_MAX_ARRAY_LENGTH`
+    - deps: ms@2.0.0
+  * deps: type-is@~1.6.15
+    - deps: mime-types@~2.1.15
+
+1.17.1 / 2017-03-06
+===================
+
+  * deps: qs@6.4.0
+    - Fix regression parsing keys starting with `[`
+
+1.17.0 / 2017-03-01
+===================
+
+  * deps: http-errors@~1.6.1
+    - Make `message` property enumerable for `HttpError`s
+    - deps: setprototypeof@1.0.3
+  * deps: qs@6.3.1
+    - Fix compacting nested arrays
+
+1.16.1 / 2017-02-10
+===================
+
+  * deps: debug@2.6.1
+    - Fix deprecation messages in WebStorm and other editors
+    - Undeprecate `DEBUG_FD` set to `1` or `2`
+
+1.16.0 / 2017-01-17
+===================
+
+  * deps: debug@2.6.0
+    - Allow colors in workers
+    - Deprecated `DEBUG_FD` environment variable
+    - Fix error when running under React Native
+    - Use same color for same namespace
+    - deps: ms@0.7.2
+  * deps: http-errors@~1.5.1
+    - deps: inherits@2.0.3
+    - deps: setprototypeof@1.0.2
+    - deps: statuses@'>= 1.3.1 < 2'
+  * deps: iconv-lite@0.4.15
+    - Added encoding MS-31J
+    - Added encoding MS-932
+    - Added encoding MS-936
+    - Added encoding MS-949
+    - Added encoding MS-950
+    - Fix GBK/GB18030 handling of Euro character
+  * deps: qs@6.2.1
+    - Fix array parsing from skipping empty values
+  * deps: raw-body@~2.2.0
+    - deps: iconv-lite@0.4.15
+  * deps: type-is@~1.6.14
+    - deps: mime-types@~2.1.13
+
+1.15.2 / 2016-06-19
+===================
+
+  * deps: bytes@2.4.0
+  * deps: content-type@~1.0.2
+    - perf: enable strict mode
+  * deps: http-errors@~1.5.0
+    - Use `setprototypeof` module to replace `__proto__` setting
+    - deps: statuses@'>= 1.3.0 < 2'
+    - perf: enable strict mode
+  * deps: qs@6.2.0
+  * deps: raw-body@~2.1.7
+    - deps: bytes@2.4.0
+    - perf: remove double-cleanup on happy path
+  * deps: type-is@~1.6.13
+    - deps: mime-types@~2.1.11
+
+1.15.1 / 2016-05-05
+===================
+
+  * deps: bytes@2.3.0
+    - Drop partial bytes on all parsed units
+    - Fix parsing byte string that looks like hex
+  * deps: raw-body@~2.1.6
+    - deps: bytes@2.3.0
+  * deps: type-is@~1.6.12
+    - deps: mime-types@~2.1.10
+
+1.15.0 / 2016-02-10
+===================
+
+  * deps: http-errors@~1.4.0
+    - Add `HttpError` export, for `err instanceof createError.HttpError`
+    - deps: inherits@2.0.1
+    - deps: statuses@'>= 1.2.1 < 2'
+  * deps: qs@6.1.0
+  * deps: type-is@~1.6.11
+    - deps: mime-types@~2.1.9
+
+1.14.2 / 2015-12-16
+===================
+
+  * deps: bytes@2.2.0
+  * deps: iconv-lite@0.4.13
+  * deps: qs@5.2.0
+  * deps: raw-body@~2.1.5
+    - deps: bytes@2.2.0
+    - deps: iconv-lite@0.4.13
+  * deps: type-is@~1.6.10
+    - deps: mime-types@~2.1.8
+
+1.14.1 / 2015-09-27
+===================
+
+  * Fix issue where invalid charset results in 400 when `verify` used
+  * deps: iconv-lite@0.4.12
+    - Fix CESU-8 decoding in Node.js 4.x
+  * deps: raw-body@~2.1.4
+    - Fix masking critical errors from `iconv-lite`
+    - deps: iconv-lite@0.4.12
+  * deps: type-is@~1.6.9
+    - deps: mime-types@~2.1.7
+
+1.14.0 / 2015-09-16
+===================
+
+  * Fix JSON strict parse error to match syntax errors
+  * Provide static `require` analysis in `urlencoded` parser
+  * deps: depd@~1.1.0
+    - Support web browser loading
+  * deps: qs@5.1.0
+  * deps: raw-body@~2.1.3
+    - Fix sync callback when attaching data listener causes sync read
+  * deps: type-is@~1.6.8
+    - Fix type error when given invalid type to match against
+    - deps: mime-types@~2.1.6
+
+1.13.3 / 2015-07-31
+===================
+
+  * deps: type-is@~1.6.6
+    - deps: mime-types@~2.1.4
+
+1.13.2 / 2015-07-05
+===================
+
+  * deps: iconv-lite@0.4.11
+  * deps: qs@4.0.0
+    - Fix dropping parameters like `hasOwnProperty`
+    - Fix user-visible incompatibilities from 3.1.0
+    - Fix various parsing edge cases
+  * deps: raw-body@~2.1.2
+    - Fix error stack traces to skip `makeError`
+    - deps: iconv-lite@0.4.11
+  * deps: type-is@~1.6.4
+    - deps: mime-types@~2.1.2
+    - perf: enable strict mode
+    - perf: remove argument reassignment
+
+1.13.1 / 2015-06-16
+===================
+
+  * deps: qs@2.4.2
+    - Downgraded from 3.1.0 because of user-visible incompatibilities
+
+1.13.0 / 2015-06-14
+===================
+
+  * Add `statusCode` property on `Error`s, in addition to `status`
+  * Change `type` default to `application/json` for JSON parser
+  * Change `type` default to `application/x-www-form-urlencoded` for urlencoded parser
+  * Provide static `require` analysis
+  * Use the `http-errors` module to generate errors
+  * deps: bytes@2.1.0
+    - Slight optimizations
+  * deps: iconv-lite@0.4.10
+    - The encoding UTF-16 without BOM now defaults to UTF-16LE when detection fails
+    - Leading BOM is now removed when decoding
+  * deps: on-finished@~2.3.0
+    - Add defined behavior for HTTP `CONNECT` requests
+    - Add defined behavior for HTTP `Upgrade` requests
+    - deps: ee-first@1.1.1
+  * deps: qs@3.1.0
+    - Fix dropping parameters like `hasOwnProperty`
+    - Fix various parsing edge cases
+    - Parsed object now has `null` prototype
+  * deps: raw-body@~2.1.1
+    - Use `unpipe` module for unpiping requests
+    - deps: iconv-lite@0.4.10
+  * deps: type-is@~1.6.3
+    - deps: mime-types@~2.1.1
+    - perf: reduce try block size
+    - perf: remove bitwise operations
+  * perf: enable strict mode
+  * perf: remove argument reassignment
+  * perf: remove delete call
+
+1.12.4 / 2015-05-10
+===================
+
+  * deps: debug@~2.2.0
+  * deps: qs@2.4.2
+    - Fix allowing parameters like `constructor`
+  * deps: on-finished@~2.2.1
+  * deps: raw-body@~2.0.1
+    - Fix a false-positive when unpiping in Node.js 0.8
+    - deps: bytes@2.0.1
+  * deps: type-is@~1.6.2
+    - deps: mime-types@~2.0.11
+
+1.12.3 / 2015-04-15
+===================
+
+  * Slight efficiency improvement when not debugging
+  * deps: depd@~1.0.1
+  * deps: iconv-lite@0.4.8
+    - Add encoding alias UNICODE-1-1-UTF-7
+  * deps: raw-body@1.3.4
+    - Fix hanging callback if request aborts during read
+    - deps: iconv-lite@0.4.8
+
+1.12.2 / 2015-03-16
+===================
+
+  * deps: qs@2.4.1
+    - Fix error when parameter `hasOwnProperty` is present
+
+1.12.1 / 2015-03-15
+===================
+
+  * deps: debug@~2.1.3
+    - Fix high intensity foreground color for bold
+    - deps: ms@0.7.0
+  * deps: type-is@~1.6.1
+    - deps: mime-types@~2.0.10
+
+1.12.0 / 2015-02-13
+===================
+
+  * add `debug` messages
+  * accept a function for the `type` option
+  * use `content-type` to parse `Content-Type` headers
+  * deps: iconv-lite@0.4.7
+    - Gracefully support enumerables on `Object.prototype`
+  * deps: raw-body@1.3.3
+    - deps: iconv-lite@0.4.7
+  * deps: type-is@~1.6.0
+    - fix argument reassignment
+    - fix false-positives in `hasBody` `Transfer-Encoding` check
+    - support wildcard for both type and subtype (`*/*`)
+    - deps: mime-types@~2.0.9
+
+1.11.0 / 2015-01-30
+===================
+
+  * make internal `extended: true` depth limit infinity
+  * deps: type-is@~1.5.6
+    - deps: mime-types@~2.0.8
+
+1.10.2 / 2015-01-20
+===================
+
+  * deps: iconv-lite@0.4.6
+    - Fix rare aliases of single-byte encodings
+  * deps: raw-body@1.3.2
+    - deps: iconv-lite@0.4.6
+
+1.10.1 / 2015-01-01
+===================
+
+  * deps: on-finished@~2.2.0
+  * deps: type-is@~1.5.5
+    - deps: mime-types@~2.0.7
+
+1.10.0 / 2014-12-02
+===================
+
+  * make internal `extended: true` array limit dynamic
+
+1.9.3 / 2014-11-21
+==================
+
+  * deps: iconv-lite@0.4.5
+    - Fix Windows-31J and X-SJIS encoding support
+  * deps: qs@2.3.3
+    - Fix `arrayLimit` behavior
+  * deps: raw-body@1.3.1
+    - deps: iconv-lite@0.4.5
+  * deps: type-is@~1.5.3
+    - deps: mime-types@~2.0.3
+
+1.9.2 / 2014-10-27
+==================
+
+  * deps: qs@2.3.2
+    - Fix parsing of mixed objects and values
+
+1.9.1 / 2014-10-22
+==================
+
+  * deps: on-finished@~2.1.1
+    - Fix handling of pipelined requests
+  * deps: qs@2.3.0
+    - Fix parsing of mixed implicit and explicit arrays
+  * deps: type-is@~1.5.2
+    - deps: mime-types@~2.0.2
+
+1.9.0 / 2014-09-24
+==================
+
+  * include the charset in "unsupported charset" error message
+  * include the encoding in "unsupported content encoding" error message
+  * deps: depd@~1.0.0
+
+1.8.4 / 2014-09-23
+==================
+
+  * fix content encoding to be case-insensitive
+
+1.8.3 / 2014-09-19
+==================
+
+  * deps: qs@2.2.4
+    - Fix issue with object keys starting with numbers truncated
+
+1.8.2 / 2014-09-15
+==================
+
+  * deps: depd@0.4.5
+
+1.8.1 / 2014-09-07
+==================
+
+  * deps: media-typer@0.3.0
+  * deps: type-is@~1.5.1
+
+1.8.0 / 2014-09-05
+==================
+
+  * make empty-body-handling consistent between chunked requests
+    - empty `json` produces `{}`
+    - empty `raw` produces `new Buffer(0)`
+    - empty `text` produces `''`
+    - empty `urlencoded` produces `{}`
+  * deps: qs@2.2.3
+    - Fix issue where first empty value in array is discarded
+  * deps: type-is@~1.5.0
+    - fix `hasbody` to be true for `content-length: 0`
+
+1.7.0 / 2014-09-01
+==================
+
+  * add `parameterLimit` option to `urlencoded` parser
+  * change `urlencoded` extended array limit to 100
+  * respond with 413 when over `parameterLimit` in `urlencoded`
+
+1.6.7 / 2014-08-29
+==================
+
+  * deps: qs@2.2.2
+    - Remove unnecessary cloning
+
+1.6.6 / 2014-08-27
+==================
+
+  * deps: qs@2.2.0
+    - Array parsing fix
+    - Performance improvements
+
+1.6.5 / 2014-08-16
+==================
+
+  * deps: on-finished@2.1.0
+
+1.6.4 / 2014-08-14
+==================
+
+  * deps: qs@1.2.2
+
+1.6.3 / 2014-08-10
+==================
+
+  * deps: qs@1.2.1
+
+1.6.2 / 2014-08-07
+==================
+
+  * deps: qs@1.2.0
+    - Fix parsing array of objects
+
+1.6.1 / 2014-08-06
+==================
+
+  * deps: qs@1.1.0
+    - Accept urlencoded square brackets
+    - Accept empty values in implicit array notation
+
+1.6.0 / 2014-08-05
+==================
+
+  * deps: qs@1.0.2
+    - Complete rewrite
+    - Limits array length to 20
+    - Limits object depth to 5
+    - Limits parameters to 1,000
+
+1.5.2 / 2014-07-27
+==================
+
+  * deps: depd@0.4.4
+    - Work-around v8 generating empty stack traces
+
+1.5.1 / 2014-07-26
+==================
+
+  * deps: depd@0.4.3
+    - Fix exception when global `Error.stackTraceLimit` is too low
+
+1.5.0 / 2014-07-20
+==================
+
+  * deps: depd@0.4.2
+    - Add `TRACE_DEPRECATION` environment variable
+    - Remove non-standard grey color from color output
+    - Support `--no-deprecation` argument
+    - Support `--trace-deprecation` argument
+  * deps: iconv-lite@0.4.4
+    - Added encoding UTF-7
+  * deps: raw-body@1.3.0
+    - deps: iconv-lite@0.4.4
+    - Added encoding UTF-7
+    - Fix `Cannot switch to old mode now` error on Node.js 0.10+
+  * deps: type-is@~1.3.2
+
+1.4.3 / 2014-06-19
+==================
+
+  * deps: type-is@1.3.1
+    - fix global variable leak
+
+1.4.2 / 2014-06-19
+==================
+
+  * deps: type-is@1.3.0
+    - improve type parsing
+
+1.4.1 / 2014-06-19
+==================
+
+  * fix urlencoded extended deprecation message
+
+1.4.0 / 2014-06-19
+==================
+
+  * add `text` parser
+  * add `raw` parser
+  * check accepted charset in content-type (accepts utf-8)
+  * check accepted encoding in content-encoding (accepts identity)
+  * deprecate `bodyParser()` middleware; use `.json()` and `.urlencoded()` as needed
+  * deprecate `urlencoded()` without provided `extended` option
+  * lazy-load urlencoded parsers
+  * parsers split into files for reduced mem usage
+  * support gzip and deflate bodies
+    - set `inflate: false` to turn off
+  * deps: raw-body@1.2.2
+    - Support all encodings from `iconv-lite`
+
+1.3.1 / 2014-06-11
+==================
+
+  * deps: type-is@1.2.1
+    - Switch dependency from mime to mime-types@1.0.0
+
+1.3.0 / 2014-05-31
+==================
+
+  * add `extended` option to urlencoded parser
+
+1.2.2 / 2014-05-27
+==================
+
+  * deps: raw-body@1.1.6
+    - assert stream encoding on node.js 0.8
+    - assert stream encoding on node.js < 0.10.6
+    - deps: bytes@1
+
+1.2.1 / 2014-05-26
+==================
+
+  * invoke `next(err)` after request fully read
+    - prevents hung responses and socket hang ups
+
+1.2.0 / 2014-05-11
+==================
+
+  * add `verify` option
+  * deps: type-is@1.2.0
+    - support suffix matching
+
+1.1.2 / 2014-05-11
+==================
+
+  * improve json parser speed
+
+1.1.1 / 2014-05-11
+==================
+
+  * fix repeated limit parsing with every request
+
+1.1.0 / 2014-05-10
+==================
+
+  * add `type` option
+  * deps: pin for safety and consistency
+
+1.0.2 / 2014-04-14
+==================
+
+  * use `type-is` module
+
+1.0.1 / 2014-03-20
+==================
+
+  * lower default limits to 100kb

backend/node_modules/body-parser/LICENSE

@@ -0,0 +1,23 @@
+(The MIT License)
+
+Copyright (c) 2014 Jonathan Ong <me@jongleberry.com>
+Copyright (c) 2014-2015 Douglas Christopher Wilson <doug@somethingdoug.com>
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+'Software'), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

backend/node_modules/body-parser/README.md

@@ -0,0 +1,456 @@
+# body-parser
+
+[![NPM Version][npm-image]][npm-url]
+[![NPM Downloads][downloads-image]][downloads-url]
+[![Build Status][github-actions-ci-image]][github-actions-ci-url]
+[![Test Coverage][coveralls-image]][coveralls-url]
+
+Node.js body parsing middleware.
+
+Parse incoming request bodies in a middleware before your handlers, available
+under the `req.body` property.
+
+**Note** As `req.body`'s shape is based on user-controlled input, all
+properties and values in this object are untrusted and should be validated
+before trusting. For example, `req.body.foo.toString()` may fail in multiple
+ways, for example the `foo` property may not be there or may not be a string,
+and `toString` may not be a function and instead a string or other user input.
+
+[Learn about the anatomy of an HTTP transaction in Node.js](https://nodejs.org/en/docs/guides/anatomy-of-an-http-transaction/).
+
+_This does not handle multipart bodies_, due to their complex and typically
+large nature. For multipart bodies, you may be interested in the following
+modules:
+
+  * [busboy](https://www.npmjs.org/package/busboy#readme) and
+    [connect-busboy](https://www.npmjs.org/package/connect-busboy#readme)
+  * [multiparty](https://www.npmjs.org/package/multiparty#readme) and
+    [connect-multiparty](https://www.npmjs.org/package/connect-multiparty#readme)
+  * [formidable](https://www.npmjs.org/package/formidable#readme)
+  * [multer](https://www.npmjs.org/package/multer#readme)
+
+This module provides the following parsers:
+
+  * [JSON body parser](#bodyparserjsonoptions)
+  * [Raw body parser](#bodyparserrawoptions)
+  * [Text body parser](#bodyparsertextoptions)
+  * [URL-encoded form body parser](#bodyparserurlencodedoptions)
+
+Other body parsers you might be interested in:
+
+- [body](https://www.npmjs.org/package/body#readme)
+- [co-body](https://www.npmjs.org/package/co-body#readme)
+
+## Installation
+
+```sh
+$ npm install body-parser
+```
+
+## API
+
+```js
+var bodyParser = require('body-parser')
+```
+
+The `bodyParser` object exposes various factories to create middlewares. All
+middlewares will populate the `req.body` property with the parsed body when
+the `Content-Type` request header matches the `type` option, or an empty
+object (`{}`) if there was no body to parse, the `Content-Type` was not matched,
+or an error occurred.
+
+The various errors returned by this module are described in the
+[errors section](#errors).
+
+### bodyParser.json([options])
+
+Returns middleware that only parses `json` and only looks at requests where
+the `Content-Type` header matches the `type` option. This parser accepts any
+Unicode encoding of the body and supports automatic inflation of `gzip` and
+`deflate` encodings.
+
+A new `body` object containing the parsed data is populated on the `request`
+object after the middleware (i.e. `req.body`).
+
+#### Options
+
+The `json` function takes an optional `options` object that may contain any of
+the following keys:
+
+##### inflate
+
+When set to `true`, then deflated (compressed) bodies will be inflated; when
+`false`, deflated bodies are rejected. Defaults to `true`.
+
+##### limit
+
+Controls the maximum request body size. If this is a number, then the value
+specifies the number of bytes; if it is a string, the value is passed to the
+[bytes](https://www.npmjs.com/package/bytes) library for parsing. Defaults
+to `'100kb'`.
+
+##### reviver
+
+The `reviver` option is passed directly to `JSON.parse` as the second
+argument. You can find more information on this argument
+[in the MDN documentation about JSON.parse](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON/parse#Example.3A_Using_the_reviver_parameter).
+
+##### strict
+
+When set to `true`, will only accept arrays and objects; when `false` will
+accept anything `JSON.parse` accepts. Defaults to `true`.
+
+##### type
+
+The `type` option is used to determine what media type the middleware will
+parse. This option can be a string, array of strings, or a function. If not a
+function, `type` option is passed directly to the
+[type-is](https://www.npmjs.org/package/type-is#readme) library and this can
+be an extension name (like `json`), a mime type (like `application/json`), or
+a mime type with a wildcard (like `*/*` or `*/json`). If a function, the `type`
+option is called as `fn(req)` and the request is parsed if it returns a truthy
+value. Defaults to `application/json`.
+
+##### verify
+
+The `verify` option, if supplied, is called as `verify(req, res, buf, encoding)`,
+where `buf` is a `Buffer` of the raw request body and `encoding` is the
+encoding of the request. The parsing can be aborted by throwing an error.
+
+### bodyParser.raw([options])
+
+Returns middleware that parses all bodies as a `Buffer` and only looks at
+requests where the `Content-Type` header matches the `type` option. This
+parser supports automatic inflation of `gzip` and `deflate` encodings.
+
+A new `body` object containing the parsed data is populated on the `request`
+object after the middleware (i.e. `req.body`). This will be a `Buffer` object
+of the body.
+
+#### Options
+
+The `raw` function takes an optional `options` object that may contain any of
+the following keys:
+
+##### inflate
+
+When set to `true`, then deflated (compressed) bodies will be inflated; when
+`false`, deflated bodies are rejected. Defaults to `true`.
+
+##### limit
+
+Controls the maximum request body size. If this is a number, then the value
+specifies the number of bytes; if it is a string, the value is passed to the
+[bytes](https://www.npmjs.com/package/bytes) library for parsing. Defaults
+to `'100kb'`.
+
+##### type
+
+The `type` option is used to determine what media type the middleware will
+parse. This option can be a string, array of strings, or a function.
+If not a function, `type` option is passed directly to the
+[type-is](https://www.npmjs.org/package/type-is#readme) library and this
+can be an extension name (like `bin`), a mime type (like
+`application/octet-stream`), or a mime type with a wildcard (like `*/*` or
+`application/*`). If a function, the `type` option is called as `fn(req)`
+and the request is parsed if it returns a truthy value. Defaults to
+`application/octet-stream`.
+
+##### verify
+
+The `verify` option, if supplied, is called as `verify(req, res, buf, encoding)`,
+where `buf` is a `Buffer` of the raw request body and `encoding` is the
+encoding of the request. The parsing can be aborted by throwing an error.
+
+### bodyParser.text([options])
+
+Returns middleware that parses all bodies as a string and only looks at
+requests where the `Content-Type` header matches the `type` option. This
+parser supports automatic inflation of `gzip` and `deflate` encodings.
+
+A new `body` string containing the parsed data is populated on the `request`
+object after the middleware (i.e. `req.body`). This will be a string of the
+body.
+
+#### Options
+
+The `text` function takes an optional `options` object that may contain any of
+the following keys:
+
+##### defaultCharset
+
+Specify the default character set for the text content if the charset is not
+specified in the `Content-Type` header of the request. Defaults to `utf-8`.
+
+##### inflate
+
+When set to `true`, then deflated (compressed) bodies will be inflated; when
+`false`, deflated bodies are rejected. Defaults to `true`.
+
+##### limit
+
+Controls the maximum request body size. If this is a number, then the value
+specifies the number of bytes; if it is a string, the value is passed to the
+[bytes](https://www.npmjs.com/package/bytes) library for parsing. Defaults
+to `'100kb'`.
+
+##### type
+
+The `type` option is used to determine what media type the middleware will
+parse. This option can be a string, array of strings, or a function. If not
+a function, `type` option is passed directly to the
+[type-is](https://www.npmjs.org/package/type-is#readme) library and this can
+be an extension name (like `txt`), a mime type (like `text/plain`), or a mime
+type with a wildcard (like `*/*` or `text/*`). If a function, the `type`
+option is called as `fn(req)` and the request is parsed if it returns a
+truthy value. Defaults to `text/plain`.
+
+##### verify
+
+The `verify` option, if supplied, is called as `verify(req, res, buf, encoding)`,
+where `buf` is a `Buffer` of the raw request body and `encoding` is the
+encoding of the request. The parsing can be aborted by throwing an error.
+
+### bodyParser.urlencoded([options])
+
+Returns middleware that only parses `urlencoded` bodies and only looks at
+requests where the `Content-Type` header matches the `type` option. This
+parser accepts only UTF-8 encoding of the body and supports automatic
+inflation of `gzip` and `deflate` encodings.
+
+A new `body` object containing the parsed data is populated on the `request`
+object after the middleware (i.e. `req.body`). This object will contain
+key-value pairs, where the value can be a string or array (when `extended` is
+`false`), or any type (when `extended` is `true`).
+
+#### Options
+
+The `urlencoded` function takes an optional `options` object that may contain
+any of the following keys:
+
+##### extended
+
+The `extended` option allows to choose between parsing the URL-encoded data
+with the `querystring` library (when `false`) or the `qs` library (when
+`true`). The "extended" syntax allows for rich objects and arrays to be
+encoded into the URL-encoded format, allowing for a JSON-like experience
+with URL-encoded. For more information, please
+[see the qs library](https://www.npmjs.org/package/qs#readme).
+
+Defaults to `true`, but using the default has been deprecated. Please
+research into the difference between `qs` and `querystring` and choose the
+appropriate setting.
+
+##### inflate
+
+When set to `true`, then deflated (compressed) bodies will be inflated; when
+`false`, deflated bodies are rejected. Defaults to `true`.
+
+##### limit
+
+Controls the maximum request body size. If this is a number, then the value
+specifies the number of bytes; if it is a string, the value is passed to the
+[bytes](https://www.npmjs.com/package/bytes) library for parsing. Defaults
+to `'100kb'`.
+
+##### parameterLimit
+
+The `parameterLimit` option controls the maximum number of parameters that
+are allowed in the URL-encoded data. If a request contains more parameters
+than this value, a 413 will be returned to the client. Defaults to `1000`.
+
+##### type
+
+The `type` option is used to determine what media type the middleware will
+parse. This option can be a string, array of strings, or a function. If not
+a function, `type` option is passed directly to the
+[type-is](https://www.npmjs.org/package/type-is#readme) library and this can
+be an extension name (like `urlencoded`), a mime type (like
+`application/x-www-form-urlencoded`), or a mime type with a wildcard (like
+`*/x-www-form-urlencoded`). If a function, the `type` option is called as
+`fn(req)` and the request is parsed if it returns a truthy value. Defaults
+to `application/x-www-form-urlencoded`.
+
+##### verify
+
+The `verify` option, if supplied, is called as `verify(req, res, buf, encoding)`,
+where `buf` is a `Buffer` of the raw request body and `encoding` is the
+encoding of the request. The parsing can be aborted by throwing an error.
+
+## Errors
+
+The middlewares provided by this module create errors using the
+[`http-errors` module](https://www.npmjs.com/package/http-errors). The errors
+will typically have a `status`/`statusCode` property that contains the suggested
+HTTP response code, an `expose` property to determine if the `message` property
+should be displayed to the client, a `type` property to determine the type of
+error without matching against the `message`, and a `body` property containing
+the read body, if available.
+
+The following are the common errors created, though any error can come through
+for various reasons.
+
+### content encoding unsupported
+
+This error will occur when the request had a `Content-Encoding` header that
+contained an encoding but the "inflation" option was set to `false`. The
+`status` property is set to `415`, the `type` property is set to
+`'encoding.unsupported'`, and the `charset` property will be set to the
+encoding that is unsupported.
+
+### entity parse failed
+
+This error will occur when the request contained an entity that could not be
+parsed by the middleware. The `status` property is set to `400`, the `type`
+property is set to `'entity.parse.failed'`, and the `body` property is set to
+the entity value that failed parsing.
+
+### entity verify failed
+
+This error will occur when the request contained an entity that could not be
+failed verification by the defined `verify` option. The `status` property is
+set to `403`, the `type` property is set to `'entity.verify.failed'`, and the
+`body` property is set to the entity value that failed verification.
+
+### request aborted
+
+This error will occur when the request is aborted by the client before reading
+the body has finished. The `received` property will be set to the number of
+bytes received before the request was aborted and the `expected` property is
+set to the number of expected bytes. The `status` property is set to `400`
+and `type` property is set to `'request.aborted'`.
+
+### request entity too large
+
+This error will occur when the request body's size is larger than the "limit"
+option. The `limit` property will be set to the byte limit and the `length`
+property will be set to the request body's length. The `status` property is
+set to `413` and the `type` property is set to `'entity.too.large'`.
+
+### request size did not match content length
+
+This error will occur when the request's length did not match the length from
+the `Content-Length` header. This typically occurs when the request is malformed,
+typically when the `Content-Length` header was calculated based on characters
+instead of bytes. The `status` property is set to `400` and the `type` property
+is set to `'request.size.invalid'`.
+
+### stream encoding should not be set
+
+This error will occur when something called the `req.setEncoding` method prior
+to this middleware. This module operates directly on bytes only and you cannot
+call `req.setEncoding` when using this module. The `status` property is set to
+`500` and the `type` property is set to `'stream.encoding.set'`.
+
+### too many parameters
+
+This error will occur when the content of the request exceeds the configured
+`parameterLimit` for the `urlencoded` parser. The `status` property is set to
+`413` and the `type` property is set to `'parameters.too.many'`.
+
+### unsupported charset "BOGUS"
+
+This error will occur when the request had a charset parameter in the
+`Content-Type` header, but the `iconv-lite` module does not support it OR the
+parser does not support it. The charset is contained in the message as well
+as in the `charset` property. The `status` property is set to `415`, the
+`type` property is set to `'charset.unsupported'`, and the `charset` property
+is set to the charset that is unsupported.
+
+### unsupported content encoding "bogus"
+
+This error will occur when the request had a `Content-Encoding` header that
+contained an unsupported encoding. The encoding is contained in the message
+as well as in the `encoding` property. The `status` property is set to `415`,
+the `type` property is set to `'encoding.unsupported'`, and the `encoding`
+property is set to the encoding that is unsupported.
+
+## Examples
+
+### Express/Connect top-level generic
+
+This example demonstrates adding a generic JSON and URL-encoded parser as a
+top-level middleware, which will parse the bodies of all incoming requests.
+This is the simplest setup.
+
+```js
+var express = require('express')
+var bodyParser = require('body-parser')
+
+var app = express()
+
+// parse application/x-www-form-urlencoded
+app.use(bodyParser.urlencoded({ extended: false }))
+
+// parse application/json
+app.use(bodyParser.json())
+
+app.use(function (req, res) {
+  res.setHeader('Content-Type', 'text/plain')
+  res.write('you posted:\n')
+  res.end(JSON.stringify(req.body, null, 2))
+})
+```
+
+### Express route-specific
+
+This example demonstrates adding body parsers specifically to the routes that
+need them. In general, this is the most recommended way to use body-parser with
+Express.
+
+```js
+var express = require('express')
+var bodyParser = require('body-parser')
+
+var app = express()
+
+// create application/json parser
+var jsonParser = bodyParser.json()
+
+// create application/x-www-form-urlencoded parser
+var urlencodedParser = bodyParser.urlencoded({ extended: false })
+
+// POST /login gets urlencoded bodies
+app.post('/login', urlencodedParser, function (req, res) {
+  res.send('welcome, ' + req.body.username)
+})
+
+// POST /api/users gets JSON bodies
+app.post('/api/users', jsonParser, function (req, res) {
+  // create user in req.body
+})
+```
+
+### Change accepted type for parsers
+
+All the parsers accept a `type` option which allows you to change the
+`Content-Type` that the middleware will parse.
+
+```js
+var express = require('express')
+var bodyParser = require('body-parser')
+
+var app = express()
+
+// parse various different custom JSON types as JSON
+app.use(bodyParser.json({ type: 'application/*+json' }))
+
+// parse some custom thing into a Buffer
+app.use(bodyParser.raw({ type: 'application/vnd.custom-type' }))
+
+// parse an HTML body into a string
+app.use(bodyParser.text({ type: 'text/html' }))
+```
+
+## License
+
+[MIT](LICENSE)
+
+[npm-image]: https://img.shields.io/npm/v/body-parser.svg
+[npm-url]: https://npmjs.org/package/body-parser
+[coveralls-image]: https://img.shields.io/coveralls/expressjs/body-parser/master.svg
+[coveralls-url]: https://coveralls.io/r/expressjs/body-parser?branch=master
+[downloads-image]: https://img.shields.io/npm/dm/body-parser.svg
+[downloads-url]: https://npmjs.org/package/body-parser
+[github-actions-ci-image]: https://img.shields.io/github/workflow/status/expressjs/body-parser/ci/master?label=ci
+[github-actions-ci-url]: https://github.com/expressjs/body-parser?query=workflow%3Aci

backend/node_modules/body-parser/index.js

@@ -0,0 +1,157 @@
+/*!
+ * body-parser
+ * Copyright(c) 2014-2015 Douglas Christopher Wilson
+ * MIT Licensed
+ */
+
+'use strict'
+
+/**
+ * Module dependencies.
+ * @private
+ */
+
+var deprecate = require('depd')('body-parser')
+
+/**
+ * Cache of loaded parsers.
+ * @private
+ */
+
+var parsers = Object.create(null)
+
+/**
+ * @typedef Parsers
+ * @type {function}
+ * @property {function} json
+ * @property {function} raw
+ * @property {function} text
+ * @property {function} urlencoded
+ */
+
+/**
+ * Module exports.
+ * @type {Parsers}
+ */
+
+exports = module.exports = deprecate.function(bodyParser,
+  'bodyParser: use individual json/urlencoded middlewares')
+
+/**
+ * JSON parser.
+ * @public
+ */
+
+Object.defineProperty(exports, 'json', {
+  configurable: true,
+  enumerable: true,
+  get: createParserGetter('json')
+})
+
+/**
+ * Raw parser.
+ * @public
+ */
+
+Object.defineProperty(exports, 'raw', {
+  configurable: true,
+  enumerable: true,
+  get: createParserGetter('raw')
+})
+
+/**
+ * Text parser.
+ * @public
+ */
+
+Object.defineProperty(exports, 'text', {
+  configurable: true,
+  enumerable: true,
+  get: createParserGetter('text')
+})
+
+/**
+ * URL-encoded parser.
+ * @public
+ */
+
+Object.defineProperty(exports, 'urlencoded', {
+  configurable: true,
+  enumerable: true,
+  get: createParserGetter('urlencoded')
+})
+
+/**
+ * Create a middleware to parse json and urlencoded bodies.
+ *
+ * @param {object} [options]
+ * @return {function}
+ * @deprecated
+ * @public
+ */
+
+function bodyParser (options) {
+  var opts = {}
+
+  // exclude type option
+  if (options) {
+    for (var prop in options) {
+      if (prop !== 'type') {
+        opts[prop] = options[prop]
+      }
+    }
+  }
+
+  var _urlencoded = exports.urlencoded(opts)
+  var _json = exports.json(opts)
+
+  return function bodyParser (req, res, next) {
+    _json(req, res, function (err) {
+      if (err) return next(err)
+      _urlencoded(req, res, next)
+    })
+  }
+}
+
+/**
+ * Create a getter for loading a parser.
+ * @private
+ */
+
+function createParserGetter (name) {
+  return function get () {
+    return loadParser(name)
+  }
+}
+
+/**
+ * Load a parser module.
+ * @private
+ */
+
+function loadParser (parserName) {
+  var parser = parsers[parserName]
+
+  if (parser !== undefined) {
+    return parser
+  }
+
+  // this uses a switch for static require analysis
+  switch (parserName) {
+    case 'json':
+      parser = require('./lib/types/json')
+      break
+    case 'raw':
+      parser = require('./lib/types/raw')
+      break
+    case 'text':
+      parser = require('./lib/types/text')
+      break
+    case 'urlencoded':
+      parser = require('./lib/types/urlencoded')
+      break
+  }
+
+  // store to prevent invoking require()
+  return (parsers[parserName] = parser)
+}