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- 'use strict';
- Object.defineProperty(exports, '__esModule', {
- value: true
- });
- exports.default = deepCyclicCopyReplaceable;
- var _prettyFormat = require('pretty-format');
- /**
- * Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
- const builtInObject = [
- Array,
- Buffer,
- Date,
- Float32Array,
- Float64Array,
- Int16Array,
- Int32Array,
- Int8Array,
- Map,
- Set,
- RegExp,
- Uint16Array,
- Uint32Array,
- Uint8Array,
- Uint8ClampedArray
- ];
- const isBuiltInObject = object => builtInObject.includes(object.constructor);
- const isMap = value => value.constructor === Map;
- function deepCyclicCopyReplaceable(value, cycles = new WeakMap()) {
- if (typeof value !== 'object' || value === null) {
- return value;
- } else if (cycles.has(value)) {
- return cycles.get(value);
- } else if (Array.isArray(value)) {
- return deepCyclicCopyArray(value, cycles);
- } else if (isMap(value)) {
- return deepCyclicCopyMap(value, cycles);
- } else if (isBuiltInObject(value)) {
- return value;
- } else if (_prettyFormat.plugins.DOMElement.test(value)) {
- return value.cloneNode(true);
- } else {
- return deepCyclicCopyObject(value, cycles);
- }
- }
- function deepCyclicCopyObject(object, cycles) {
- const newObject = Object.create(Object.getPrototypeOf(object));
- const descriptors = Object.getOwnPropertyDescriptors(object);
- cycles.set(object, newObject);
- const newDescriptors = [
- ...Object.keys(descriptors),
- ...Object.getOwnPropertySymbols(descriptors)
- ].reduce(
- //@ts-expect-error because typescript do not support symbol key in object
- //https://github.com/microsoft/TypeScript/issues/1863
- (newDescriptors, key) => {
- const enumerable = descriptors[key].enumerable;
- newDescriptors[key] = {
- configurable: true,
- enumerable,
- value: deepCyclicCopyReplaceable(
- // this accesses the value or getter, depending. We just care about the value anyways, and this allows us to not mess with accessors
- // it has the side effect of invoking the getter here though, rather than copying it over
- object[key],
- cycles
- ),
- writable: true
- };
- return newDescriptors;
- },
- {}
- ); //@ts-expect-error because typescript do not support symbol key in object
- //https://github.com/microsoft/TypeScript/issues/1863
- return Object.defineProperties(newObject, newDescriptors);
- }
- function deepCyclicCopyArray(array, cycles) {
- const newArray = new (Object.getPrototypeOf(array).constructor)(array.length);
- const length = array.length;
- cycles.set(array, newArray);
- for (let i = 0; i < length; i++) {
- newArray[i] = deepCyclicCopyReplaceable(array[i], cycles);
- }
- return newArray;
- }
- function deepCyclicCopyMap(map, cycles) {
- const newMap = new Map();
- cycles.set(map, newMap);
- map.forEach((value, key) => {
- newMap.set(key, deepCyclicCopyReplaceable(value, cycles));
- });
- return newMap;
- }
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