HomeWork_JS/node_modules/@remix-run/router/dist/router.cjs.js

/**
 * @remix-run/router v1.3.2
 *
 * Copyright (c) Remix Software Inc.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE.md file in the root directory of this source tree.
 *
 * @license MIT
 */
'use strict';

Object.defineProperty(exports, '__esModule', { value: true });

function _extends() {
  _extends = Object.assign ? Object.assign.bind() : function (target) {
    for (var i = 1; i < arguments.length; i++) {
      var source = arguments[i];

      for (var key in source) {
        if (Object.prototype.hasOwnProperty.call(source, key)) {
          target[key] = source[key];
        }
      }
    }

    return target;
  };
  return _extends.apply(this, arguments);
}

////////////////////////////////////////////////////////////////////////////////
//#region Types and Constants
////////////////////////////////////////////////////////////////////////////////

/**
 * Actions represent the type of change to a location value.
 */
exports.Action = void 0;
/**
 * The pathname, search, and hash values of a URL.
 */

(function (Action) {
  Action["Pop"] = "POP";
  Action["Push"] = "PUSH";
  Action["Replace"] = "REPLACE";
})(exports.Action || (exports.Action = {}));

const PopStateEventType = "popstate"; //#endregion
////////////////////////////////////////////////////////////////////////////////
//#region Memory History
////////////////////////////////////////////////////////////////////////////////

/**
 * A user-supplied object that describes a location. Used when providing
 * entries to `createMemoryHistory` via its `initialEntries` option.
 */

/**
 * Memory history stores the current location in memory. It is designed for use
 * in stateful non-browser environments like tests and React Native.
 */
function createMemoryHistory(options) {
  if (options === void 0) {
    options = {};
  }

  let {
    initialEntries = ["/"],
    initialIndex,
    v5Compat = false
  } = options;
  let entries; // Declare so we can access from createMemoryLocation

  entries = initialEntries.map((entry, index) => createMemoryLocation(entry, typeof entry === "string" ? null : entry.state, index === 0 ? "default" : undefined));
  let index = clampIndex(initialIndex == null ? entries.length - 1 : initialIndex);
  let action = exports.Action.Pop;
  let listener = null;

  function clampIndex(n) {
    return Math.min(Math.max(n, 0), entries.length - 1);
  }

  function getCurrentLocation() {
    return entries[index];
  }

  function createMemoryLocation(to, state, key) {
    if (state === void 0) {
      state = null;
    }

    let location = createLocation(entries ? getCurrentLocation().pathname : "/", to, state, key);
    warning$1(location.pathname.charAt(0) === "/", "relative pathnames are not supported in memory history: " + JSON.stringify(to));
    return location;
  }

  function createHref(to) {
    return typeof to === "string" ? to : createPath(to);
  }

  let history = {
    get index() {
      return index;
    },

    get action() {
      return action;
    },

    get location() {
      return getCurrentLocation();
    },

    createHref,

    createURL(to) {
      return new URL(createHref(to), "http://localhost");
    },

    encodeLocation(to) {
      let path = typeof to === "string" ? parsePath(to) : to;
      return {
        pathname: path.pathname || "",
        search: path.search || "",
        hash: path.hash || ""
      };
    },

    push(to, state) {
      action = exports.Action.Push;
      let nextLocation = createMemoryLocation(to, state);
      index += 1;
      entries.splice(index, entries.length, nextLocation);

      if (v5Compat && listener) {
        listener({
          action,
          location: nextLocation,
          delta: 1
        });
      }
    },

    replace(to, state) {
      action = exports.Action.Replace;
      let nextLocation = createMemoryLocation(to, state);
      entries[index] = nextLocation;

      if (v5Compat && listener) {
        listener({
          action,
          location: nextLocation,
          delta: 0
        });
      }
    },

    go(delta) {
      action = exports.Action.Pop;
      let nextIndex = clampIndex(index + delta);
      let nextLocation = entries[nextIndex];
      index = nextIndex;

      if (listener) {
        listener({
          action,
          location: nextLocation,
          delta
        });
      }
    },

    listen(fn) {
      listener = fn;
      return () => {
        listener = null;
      };
    }

  };
  return history;
} //#endregion
////////////////////////////////////////////////////////////////////////////////
//#region Browser History
////////////////////////////////////////////////////////////////////////////////

/**
 * A browser history stores the current location in regular URLs in a web
 * browser environment. This is the standard for most web apps and provides the
 * cleanest URLs the browser's address bar.
 *
 * @see https://github.com/remix-run/history/tree/main/docs/api-reference.md#browserhistory
 */

/**
 * Browser history stores the location in regular URLs. This is the standard for
 * most web apps, but it requires some configuration on the server to ensure you
 * serve the same app at multiple URLs.
 *
 * @see https://github.com/remix-run/history/tree/main/docs/api-reference.md#createbrowserhistory
 */
function createBrowserHistory(options) {
  if (options === void 0) {
    options = {};
  }

  function createBrowserLocation(window, globalHistory) {
    let {
      pathname,
      search,
      hash
    } = window.location;
    return createLocation("", {
      pathname,
      search,
      hash
    }, // state defaults to `null` because `window.history.state` does
    globalHistory.state && globalHistory.state.usr || null, globalHistory.state && globalHistory.state.key || "default");
  }

  function createBrowserHref(window, to) {
    return typeof to === "string" ? to : createPath(to);
  }

  return getUrlBasedHistory(createBrowserLocation, createBrowserHref, null, options);
} //#endregion
////////////////////////////////////////////////////////////////////////////////
//#region Hash History
////////////////////////////////////////////////////////////////////////////////

/**
 * A hash history stores the current location in the fragment identifier portion
 * of the URL in a web browser environment.
 *
 * This is ideal for apps that do not control the server for some reason
 * (because the fragment identifier is never sent to the server), including some
 * shared hosting environments that do not provide fine-grained controls over
 * which pages are served at which URLs.
 *
 * @see https://github.com/remix-run/history/tree/main/docs/api-reference.md#hashhistory
 */

/**
 * Hash history stores the location in window.location.hash. This makes it ideal
 * for situations where you don't want to send the location to the server for
 * some reason, either because you do cannot configure it or the URL space is
 * reserved for something else.
 *
 * @see https://github.com/remix-run/history/tree/main/docs/api-reference.md#createhashhistory
 */
function createHashHistory(options) {
  if (options === void 0) {
    options = {};
  }

  function createHashLocation(window, globalHistory) {
    let {
      pathname = "/",
      search = "",
      hash = ""
    } = parsePath(window.location.hash.substr(1));
    return createLocation("", {
      pathname,
      search,
      hash
    }, // state defaults to `null` because `window.history.state` does
    globalHistory.state && globalHistory.state.usr || null, globalHistory.state && globalHistory.state.key || "default");
  }

  function createHashHref(window, to) {
    let base = window.document.querySelector("base");
    let href = "";

    if (base && base.getAttribute("href")) {
      let url = window.location.href;
      let hashIndex = url.indexOf("#");
      href = hashIndex === -1 ? url : url.slice(0, hashIndex);
    }

    return href + "#" + (typeof to === "string" ? to : createPath(to));
  }

  function validateHashLocation(location, to) {
    warning$1(location.pathname.charAt(0) === "/", "relative pathnames are not supported in hash history.push(" + JSON.stringify(to) + ")");
  }

  return getUrlBasedHistory(createHashLocation, createHashHref, validateHashLocation, options);
} //#endregion
////////////////////////////////////////////////////////////////////////////////
//#region UTILS
////////////////////////////////////////////////////////////////////////////////

/**
 * @private
 */

function invariant(value, message) {
  if (value === false || value === null || typeof value === "undefined") {
    throw new Error(message);
  }
}

function warning$1(cond, message) {
  if (!cond) {
    // eslint-disable-next-line no-console
    if (typeof console !== "undefined") console.warn(message);

    try {
      // Welcome to debugging history!
      //
      // This error is thrown as a convenience so you can more easily
      // find the source for a warning that appears in the console by
      // enabling "pause on exceptions" in your JavaScript debugger.
      throw new Error(message); // eslint-disable-next-line no-empty
    } catch (e) {}
  }
}

function createKey() {
  return Math.random().toString(36).substr(2, 8);
}
/**
 * For browser-based histories, we combine the state and key into an object
 */


function getHistoryState(location, index) {
  return {
    usr: location.state,
    key: location.key,
    idx: index
  };
}
/**
 * Creates a Location object with a unique key from the given Path
 */


function createLocation(current, to, state, key) {
  if (state === void 0) {
    state = null;
  }

  let location = _extends({
    pathname: typeof current === "string" ? current : current.pathname,
    search: "",
    hash: ""
  }, typeof to === "string" ? parsePath(to) : to, {
    state,
    // TODO: This could be cleaned up.  push/replace should probably just take
    // full Locations now and avoid the need to run through this flow at all
    // But that's a pretty big refactor to the current test suite so going to
    // keep as is for the time being and just let any incoming keys take precedence
    key: to && to.key || key || createKey()
  });

  return location;
}
/**
 * Creates a string URL path from the given pathname, search, and hash components.
 */

function createPath(_ref) {
  let {
    pathname = "/",
    search = "",
    hash = ""
  } = _ref;
  if (search && search !== "?") pathname += search.charAt(0) === "?" ? search : "?" + search;
  if (hash && hash !== "#") pathname += hash.charAt(0) === "#" ? hash : "#" + hash;
  return pathname;
}
/**
 * Parses a string URL path into its separate pathname, search, and hash components.
 */

function parsePath(path) {
  let parsedPath = {};

  if (path) {
    let hashIndex = path.indexOf("#");

    if (hashIndex >= 0) {
      parsedPath.hash = path.substr(hashIndex);
      path = path.substr(0, hashIndex);
    }

    let searchIndex = path.indexOf("?");

    if (searchIndex >= 0) {
      parsedPath.search = path.substr(searchIndex);
      path = path.substr(0, searchIndex);
    }

    if (path) {
      parsedPath.pathname = path;
    }
  }

  return parsedPath;
}

function getUrlBasedHistory(getLocation, createHref, validateLocation, options) {
  if (options === void 0) {
    options = {};
  }

  let {
    window = document.defaultView,
    v5Compat = false
  } = options;
  let globalHistory = window.history;
  let action = exports.Action.Pop;
  let listener = null;
  let index = getIndex(); // Index should only be null when we initialize. If not, it's because the
  // user called history.pushState or history.replaceState directly, in which
  // case we should log a warning as it will result in bugs.

  if (index == null) {
    index = 0;
    globalHistory.replaceState(_extends({}, globalHistory.state, {
      idx: index
    }), "");
  }

  function getIndex() {
    let state = globalHistory.state || {
      idx: null
    };
    return state.idx;
  }

  function handlePop() {
    action = exports.Action.Pop;
    let nextIndex = getIndex();
    let delta = nextIndex == null ? null : nextIndex - index;
    index = nextIndex;

    if (listener) {
      listener({
        action,
        location: history.location,
        delta
      });
    }
  }

  function push(to, state) {
    action = exports.Action.Push;
    let location = createLocation(history.location, to, state);
    if (validateLocation) validateLocation(location, to);
    index = getIndex() + 1;
    let historyState = getHistoryState(location, index);
    let url = history.createHref(location); // try...catch because iOS limits us to 100 pushState calls :/

    try {
      globalHistory.pushState(historyState, "", url);
    } catch (error) {
      // They are going to lose state here, but there is no real
      // way to warn them about it since the page will refresh...
      window.location.assign(url);
    }

    if (v5Compat && listener) {
      listener({
        action,
        location: history.location,
        delta: 1
      });
    }
  }

  function replace(to, state) {
    action = exports.Action.Replace;
    let location = createLocation(history.location, to, state);
    if (validateLocation) validateLocation(location, to);
    index = getIndex();
    let historyState = getHistoryState(location, index);
    let url = history.createHref(location);
    globalHistory.replaceState(historyState, "", url);

    if (v5Compat && listener) {
      listener({
        action,
        location: history.location,
        delta: 0
      });
    }
  }

  function createURL(to) {
    // window.location.origin is "null" (the literal string value) in Firefox
    // under certain conditions, notably when serving from a local HTML file
    // See https://bugzilla.mozilla.org/show_bug.cgi?id=878297
    let base = window.location.origin !== "null" ? window.location.origin : window.location.href;
    let href = typeof to === "string" ? to : createPath(to);
    invariant(base, "No window.location.(origin|href) available to create URL for href: " + href);
    return new URL(href, base);
  }

  let history = {
    get action() {
      return action;
    },

    get location() {
      return getLocation(window, globalHistory);
    },

    listen(fn) {
      if (listener) {
        throw new Error("A history only accepts one active listener");
      }

      window.addEventListener(PopStateEventType, handlePop);
      listener = fn;
      return () => {
        window.removeEventListener(PopStateEventType, handlePop);
        listener = null;
      };
    },

    createHref(to) {
      return createHref(window, to);
    },

    createURL,

    encodeLocation(to) {
      // Encode a Location the same way window.location would
      let url = createURL(to);
      return {
        pathname: url.pathname,
        search: url.search,
        hash: url.hash
      };
    },

    push,
    replace,

    go(n) {
      return globalHistory.go(n);
    }

  };
  return history;
} //#endregion

/**
 * Map of routeId -> data returned from a loader/action/error
 */

let ResultType;
/**
 * Successful result from a loader or action
 */

(function (ResultType) {
  ResultType["data"] = "data";
  ResultType["deferred"] = "deferred";
  ResultType["redirect"] = "redirect";
  ResultType["error"] = "error";
})(ResultType || (ResultType = {}));

function isIndexRoute(route) {
  return route.index === true;
} // Walk the route tree generating unique IDs where necessary so we are working
// solely with AgnosticDataRouteObject's within the Router


function convertRoutesToDataRoutes(routes, parentPath, allIds) {
  if (parentPath === void 0) {
    parentPath = [];
  }

  if (allIds === void 0) {
    allIds = new Set();
  }

  return routes.map((route, index) => {
    let treePath = [...parentPath, index];
    let id = typeof route.id === "string" ? route.id : treePath.join("-");
    invariant(route.index !== true || !route.children, "Cannot specify children on an index route");
    invariant(!allIds.has(id), "Found a route id collision on id \"" + id + "\".  Route " + "id's must be globally unique within Data Router usages");
    allIds.add(id);

    if (isIndexRoute(route)) {
      let indexRoute = _extends({}, route, {
        id
      });

      return indexRoute;
    } else {
      let pathOrLayoutRoute = _extends({}, route, {
        id,
        children: route.children ? convertRoutesToDataRoutes(route.children, treePath, allIds) : undefined
      });

      return pathOrLayoutRoute;
    }
  });
}
/**
 * Matches the given routes to a location and returns the match data.
 *
 * @see https://reactrouter.com/utils/match-routes
 */

function matchRoutes(routes, locationArg, basename) {
  if (basename === void 0) {
    basename = "/";
  }

  let location = typeof locationArg === "string" ? parsePath(locationArg) : locationArg;
  let pathname = stripBasename(location.pathname || "/", basename);

  if (pathname == null) {
    return null;
  }

  let branches = flattenRoutes(routes);
  rankRouteBranches(branches);
  let matches = null;

  for (let i = 0; matches == null && i < branches.length; ++i) {
    matches = matchRouteBranch(branches[i], // Incoming pathnames are generally encoded from either window.location
    // or from router.navigate, but we want to match against the unencoded
    // paths in the route definitions.  Memory router locations won't be
    // encoded here but there also shouldn't be anything to decode so this
    // should be a safe operation.  This avoids needing matchRoutes to be
    // history-aware.
    safelyDecodeURI(pathname));
  }

  return matches;
}

function flattenRoutes(routes, branches, parentsMeta, parentPath) {
  if (branches === void 0) {
    branches = [];
  }

  if (parentsMeta === void 0) {
    parentsMeta = [];
  }

  if (parentPath === void 0) {
    parentPath = "";
  }

  let flattenRoute = (route, index, relativePath) => {
    let meta = {
      relativePath: relativePath === undefined ? route.path || "" : relativePath,
      caseSensitive: route.caseSensitive === true,
      childrenIndex: index,
      route
    };

    if (meta.relativePath.startsWith("/")) {
      invariant(meta.relativePath.startsWith(parentPath), "Absolute route path \"" + meta.relativePath + "\" nested under path " + ("\"" + parentPath + "\" is not valid. An absolute child route path ") + "must start with the combined path of all its parent routes.");
      meta.relativePath = meta.relativePath.slice(parentPath.length);
    }

    let path = joinPaths([parentPath, meta.relativePath]);
    let routesMeta = parentsMeta.concat(meta); // Add the children before adding this route to the array so we traverse the
    // route tree depth-first and child routes appear before their parents in
    // the "flattened" version.

    if (route.children && route.children.length > 0) {
      invariant( // Our types know better, but runtime JS may not!
      // @ts-expect-error
      route.index !== true, "Index routes must not have child routes. Please remove " + ("all child routes from route path \"" + path + "\"."));
      flattenRoutes(route.children, branches, routesMeta, path);
    } // Routes without a path shouldn't ever match by themselves unless they are
    // index routes, so don't add them to the list of possible branches.


    if (route.path == null && !route.index) {
      return;
    }

    branches.push({
      path,
      score: computeScore(path, route.index),
      routesMeta
    });
  };

  routes.forEach((route, index) => {
    var _route$path;

    // coarse-grain check for optional params
    if (route.path === "" || !((_route$path = route.path) != null && _route$path.includes("?"))) {
      flattenRoute(route, index);
    } else {
      for (let exploded of explodeOptionalSegments(route.path)) {
        flattenRoute(route, index, exploded);
      }
    }
  });
  return branches;
}
/**
 * Computes all combinations of optional path segments for a given path,
 * excluding combinations that are ambiguous and of lower priority.
 *
 * For example, `/one/:two?/three/:four?/:five?` explodes to:
 * - `/one/three`
 * - `/one/:two/three`
 * - `/one/three/:four`
 * - `/one/three/:five`
 * - `/one/:two/three/:four`
 * - `/one/:two/three/:five`
 * - `/one/three/:four/:five`
 * - `/one/:two/three/:four/:five`
 */


function explodeOptionalSegments(path) {
  let segments = path.split("/");
  if (segments.length === 0) return [];
  let [first, ...rest] = segments; // Optional path segments are denoted by a trailing `?`

  let isOptional = first.endsWith("?"); // Compute the corresponding required segment: `foo?` -> `foo`

  let required = first.replace(/\?$/, "");

  if (rest.length === 0) {
    // Intepret empty string as omitting an optional segment
    // `["one", "", "three"]` corresponds to omitting `:two` from `/one/:two?/three` -> `/one/three`
    return isOptional ? [required, ""] : [required];
  }

  let restExploded = explodeOptionalSegments(rest.join("/"));
  let result = []; // All child paths with the prefix.  Do this for all children before the
  // optional version for all children so we get consistent ordering where the
  // parent optional aspect is preferred as required.  Otherwise, we can get
  // child sections interspersed where deeper optional segments are higher than
  // parent optional segments, where for example, /:two would explodes _earlier_
  // then /:one.  By always including the parent as required _for all children_
  // first, we avoid this issue

  result.push(...restExploded.map(subpath => subpath === "" ? required : [required, subpath].join("/"))); // Then if this is an optional value, add all child versions without

  if (isOptional) {
    result.push(...restExploded);
  } // for absolute paths, ensure `/` instead of empty segment


  return result.map(exploded => path.startsWith("/") && exploded === "" ? "/" : exploded);
}

function rankRouteBranches(branches) {
  branches.sort((a, b) => a.score !== b.score ? b.score - a.score // Higher score first
  : compareIndexes(a.routesMeta.map(meta => meta.childrenIndex), b.routesMeta.map(meta => meta.childrenIndex)));
}

const paramRe = /^:\w+$/;
const dynamicSegmentValue = 3;
const indexRouteValue = 2;
const emptySegmentValue = 1;
const staticSegmentValue = 10;
const splatPenalty = -2;

const isSplat = s => s === "*";

function computeScore(path, index) {
  let segments = path.split("/");
  let initialScore = segments.length;

  if (segments.some(isSplat)) {
    initialScore += splatPenalty;
  }

  if (index) {
    initialScore += indexRouteValue;
  }

  return segments.filter(s => !isSplat(s)).reduce((score, segment) => score + (paramRe.test(segment) ? dynamicSegmentValue : segment === "" ? emptySegmentValue : staticSegmentValue), initialScore);
}

function compareIndexes(a, b) {
  let siblings = a.length === b.length && a.slice(0, -1).every((n, i) => n === b[i]);
  return siblings ? // If two routes are siblings, we should try to match the earlier sibling
  // first. This allows people to have fine-grained control over the matching
  // behavior by simply putting routes with identical paths in the order they
  // want them tried.
  a[a.length - 1] - b[b.length - 1] : // Otherwise, it doesn't really make sense to rank non-siblings by index,
  // so they sort equally.
  0;
}

function matchRouteBranch(branch, pathname) {
  let {
    routesMeta
  } = branch;
  let matchedParams = {};
  let matchedPathname = "/";
  let matches = [];

  for (let i = 0; i < routesMeta.length; ++i) {
    let meta = routesMeta[i];
    let end = i === routesMeta.length - 1;
    let remainingPathname = matchedPathname === "/" ? pathname : pathname.slice(matchedPathname.length) || "/";
    let match = matchPath({
      path: meta.relativePath,
      caseSensitive: meta.caseSensitive,
      end
    }, remainingPathname);
    if (!match) return null;
    Object.assign(matchedParams, match.params);
    let route = meta.route;
    matches.push({
      // TODO: Can this as be avoided?
      params: matchedParams,
      pathname: joinPaths([matchedPathname, match.pathname]),
      pathnameBase: normalizePathname(joinPaths([matchedPathname, match.pathnameBase])),
      route
    });

    if (match.pathnameBase !== "/") {
      matchedPathname = joinPaths([matchedPathname, match.pathnameBase]);
    }
  }

  return matches;
}
/**
 * Returns a path with params interpolated.
 *
 * @see https://reactrouter.com/utils/generate-path
 */


function generatePath(originalPath, params) {
  if (params === void 0) {
    params = {};
  }

  let path = originalPath;

  if (path.endsWith("*") && path !== "*" && !path.endsWith("/*")) {
    warning(false, "Route path \"" + path + "\" will be treated as if it were " + ("\"" + path.replace(/\*$/, "/*") + "\" because the `*` character must ") + "always follow a `/` in the pattern. To get rid of this warning, " + ("please change the route path to \"" + path.replace(/\*$/, "/*") + "\"."));
    path = path.replace(/\*$/, "/*");
  }

  return path.replace(/^:(\w+)(\??)/g, (_, key, optional) => {
    let param = params[key];

    if (optional === "?") {
      return param == null ? "" : param;
    }

    if (param == null) {
      invariant(false, "Missing \":" + key + "\" param");
    }

    return param;
  }).replace(/\/:(\w+)(\??)/g, (_, key, optional) => {
    let param = params[key];

    if (optional === "?") {
      return param == null ? "" : "/" + param;
    }

    if (param == null) {
      invariant(false, "Missing \":" + key + "\" param");
    }

    return "/" + param;
  }) // Remove any optional markers from optional static segments
  .replace(/\?/g, "").replace(/(\/?)\*/, (_, prefix, __, str) => {
    const star = "*";

    if (params[star] == null) {
      // If no splat was provided, trim the trailing slash _unless_ it's
      // the entire path
      return str === "/*" ? "/" : "";
    } // Apply the splat


    return "" + prefix + params[star];
  });
}
/**
 * A PathPattern is used to match on some portion of a URL pathname.
 */

/**
 * Performs pattern matching on a URL pathname and returns information about
 * the match.
 *
 * @see https://reactrouter.com/utils/match-path
 */
function matchPath(pattern, pathname) {
  if (typeof pattern === "string") {
    pattern = {
      path: pattern,
      caseSensitive: false,
      end: true
    };
  }

  let [matcher, paramNames] = compilePath(pattern.path, pattern.caseSensitive, pattern.end);
  let match = pathname.match(matcher);
  if (!match) return null;
  let matchedPathname = match[0];
  let pathnameBase = matchedPathname.replace(/(.)\/+$/, "$1");
  let captureGroups = match.slice(1);
  let params = paramNames.reduce((memo, paramName, index) => {
    // We need to compute the pathnameBase here using the raw splat value
    // instead of using params["*"] later because it will be decoded then
    if (paramName === "*") {
      let splatValue = captureGroups[index] || "";
      pathnameBase = matchedPathname.slice(0, matchedPathname.length - splatValue.length).replace(/(.)\/+$/, "$1");
    }

    memo[paramName] = safelyDecodeURIComponent(captureGroups[index] || "", paramName);
    return memo;
  }, {});
  return {
    params,
    pathname: matchedPathname,
    pathnameBase,
    pattern
  };
}

function compilePath(path, caseSensitive, end) {
  if (caseSensitive === void 0) {
    caseSensitive = false;
  }

  if (end === void 0) {
    end = true;
  }

  warning(path === "*" || !path.endsWith("*") || path.endsWith("/*"), "Route path \"" + path + "\" will be treated as if it were " + ("\"" + path.replace(/\*$/, "/*") + "\" because the `*` character must ") + "always follow a `/` in the pattern. To get rid of this warning, " + ("please change the route path to \"" + path.replace(/\*$/, "/*") + "\"."));
  let paramNames = [];
  let regexpSource = "^" + path.replace(/\/*\*?$/, "") // Ignore trailing / and /*, we'll handle it below
  .replace(/^\/*/, "/") // Make sure it has a leading /
  .replace(/[\\.*+^$?{}|()[\]]/g, "\\$&") // Escape special regex chars
  .replace(/\/:(\w+)/g, (_, paramName) => {
    paramNames.push(paramName);
    return "/([^\\/]+)";
  });

  if (path.endsWith("*")) {
    paramNames.push("*");
    regexpSource += path === "*" || path === "/*" ? "(.*)$" // Already matched the initial /, just match the rest
    : "(?:\\/(.+)|\\/*)$"; // Don't include the / in params["*"]
  } else if (end) {
    // When matching to the end, ignore trailing slashes
    regexpSource += "\\/*$";
  } else if (path !== "" && path !== "/") {
    // If our path is non-empty and contains anything beyond an initial slash,
    // then we have _some_ form of path in our regex so we should expect to
    // match only if we find the end of this path segment.  Look for an optional
    // non-captured trailing slash (to match a portion of the URL) or the end
    // of the path (if we've matched to the end).  We used to do this with a
    // word boundary but that gives false positives on routes like
    // /user-preferences since `-` counts as a word boundary.
    regexpSource += "(?:(?=\\/|$))";
  } else ;

  let matcher = new RegExp(regexpSource, caseSensitive ? undefined : "i");
  return [matcher, paramNames];
}

function safelyDecodeURI(value) {
  try {
    return decodeURI(value);
  } catch (error) {
    warning(false, "The URL path \"" + value + "\" could not be decoded because it is is a " + "malformed URL segment. This is probably due to a bad percent " + ("encoding (" + error + ")."));
    return value;
  }
}

function safelyDecodeURIComponent(value, paramName) {
  try {
    return decodeURIComponent(value);
  } catch (error) {
    warning(false, "The value for the URL param \"" + paramName + "\" will not be decoded because" + (" the string \"" + value + "\" is a malformed URL segment. This is probably") + (" due to a bad percent encoding (" + error + ")."));
    return value;
  }
}
/**
 * @private
 */


function stripBasename(pathname, basename) {
  if (basename === "/") return pathname;

  if (!pathname.toLowerCase().startsWith(basename.toLowerCase())) {
    return null;
  } // We want to leave trailing slash behavior in the user's control, so if they
  // specify a basename with a trailing slash, we should support it


  let startIndex = basename.endsWith("/") ? basename.length - 1 : basename.length;
  let nextChar = pathname.charAt(startIndex);

  if (nextChar && nextChar !== "/") {
    // pathname does not start with basename/
    return null;
  }

  return pathname.slice(startIndex) || "/";
}
/**
 * @private
 */

function warning(cond, message) {
  if (!cond) {
    // eslint-disable-next-line no-console
    if (typeof console !== "undefined") console.warn(message);

    try {
      // Welcome to debugging @remix-run/router!
      //
      // This error is thrown as a convenience so you can more easily
      // find the source for a warning that appears in the console by
      // enabling "pause on exceptions" in your JavaScript debugger.
      throw new Error(message); // eslint-disable-next-line no-empty
    } catch (e) {}
  }
}
/**
 * Returns a resolved path object relative to the given pathname.
 *
 * @see https://reactrouter.com/utils/resolve-path
 */

function resolvePath(to, fromPathname) {
  if (fromPathname === void 0) {
    fromPathname = "/";
  }

  let {
    pathname: toPathname,
    search = "",
    hash = ""
  } = typeof to === "string" ? parsePath(to) : to;
  let pathname = toPathname ? toPathname.startsWith("/") ? toPathname : resolvePathname(toPathname, fromPathname) : fromPathname;
  return {
    pathname,
    search: normalizeSearch(search),
    hash: normalizeHash(hash)
  };
}

function resolvePathname(relativePath, fromPathname) {
  let segments = fromPathname.replace(/\/+$/, "").split("/");
  let relativeSegments = relativePath.split("/");
  relativeSegments.forEach(segment => {
    if (segment === "..") {
      // Keep the root "" segment so the pathname starts at /
      if (segments.length > 1) segments.pop();
    } else if (segment !== ".") {
      segments.push(segment);
    }
  });
  return segments.length > 1 ? segments.join("/") : "/";
}

function getInvalidPathError(char, field, dest, path) {
  return "Cannot include a '" + char + "' character in a manually specified " + ("`to." + field + "` field [" + JSON.stringify(path) + "].  Please separate it out to the ") + ("`to." + dest + "` field. Alternatively you may provide the full path as ") + "a string in <Link to=\"...\"> and the router will parse it for you.";
}
/**
 * @private
 *
 * When processing relative navigation we want to ignore ancestor routes that
 * do not contribute to the path, such that index/pathless layout routes don't
 * interfere.
 *
 * For example, when moving a route element into an index route and/or a
 * pathless layout route, relative link behavior contained within should stay
 * the same.  Both of the following examples should link back to the root:
 *
 *   <Route path="/">
 *     <Route path="accounts" element={<Link to=".."}>
 *   </Route>
 *
 *   <Route path="/">
 *     <Route path="accounts">
 *       <Route element={<AccountsLayout />}>       // <-- Does not contribute
 *         <Route index element={<Link to=".."} />  // <-- Does not contribute
 *       </Route
 *     </Route>
 *   </Route>
 */


function getPathContributingMatches(matches) {
  return matches.filter((match, index) => index === 0 || match.route.path && match.route.path.length > 0);
}
/**
 * @private
 */

function resolveTo(toArg, routePathnames, locationPathname, isPathRelative) {
  if (isPathRelative === void 0) {
    isPathRelative = false;
  }

  let to;

  if (typeof toArg === "string") {
    to = parsePath(toArg);
  } else {
    to = _extends({}, toArg);
    invariant(!to.pathname || !to.pathname.includes("?"), getInvalidPathError("?", "pathname", "search", to));
    invariant(!to.pathname || !to.pathname.includes("#"), getInvalidPathError("#", "pathname", "hash", to));
    invariant(!to.search || !to.search.includes("#"), getInvalidPathError("#", "search", "hash", to));
  }

  let isEmptyPath = toArg === "" || to.pathname === "";
  let toPathname = isEmptyPath ? "/" : to.pathname;
  let from; // Routing is relative to the current pathname if explicitly requested.
  //
  // If a pathname is explicitly provided in `to`, it should be relative to the
  // route context. This is explained in `Note on `<Link to>` values` in our
  // migration guide from v5 as a means of disambiguation between `to` values
  // that begin with `/` and those that do not. However, this is problematic for
  // `to` values that do not provide a pathname. `to` can simply be a search or
  // hash string, in which case we should assume that the navigation is relative
  // to the current location's pathname and *not* the route pathname.

  if (isPathRelative || toPathname == null) {
    from = locationPathname;
  } else {
    let routePathnameIndex = routePathnames.length - 1;

    if (toPathname.startsWith("..")) {
      let toSegments = toPathname.split("/"); // Each leading .. segment means "go up one route" instead of "go up one
      // URL segment".  This is a key difference from how <a href> works and a
      // major reason we call this a "to" value instead of a "href".

      while (toSegments[0] === "..") {
        toSegments.shift();
        routePathnameIndex -= 1;
      }

      to.pathname = toSegments.join("/");
    } // If there are more ".." segments than parent routes, resolve relative to
    // the root / URL.


    from = routePathnameIndex >= 0 ? routePathnames[routePathnameIndex] : "/";
  }

  let path = resolvePath(to, from); // Ensure the pathname has a trailing slash if the original "to" had one

  let hasExplicitTrailingSlash = toPathname && toPathname !== "/" && toPathname.endsWith("/"); // Or if this was a link to the current path which has a trailing slash

  let hasCurrentTrailingSlash = (isEmptyPath || toPathname === ".") && locationPathname.endsWith("/");

  if (!path.pathname.endsWith("/") && (hasExplicitTrailingSlash || hasCurrentTrailingSlash)) {
    path.pathname += "/";
  }

  return path;
}
/**
 * @private
 */

function getToPathname(to) {
  // Empty strings should be treated the same as / paths
  return to === "" || to.pathname === "" ? "/" : typeof to === "string" ? parsePath(to).pathname : to.pathname;
}
/**
 * @private
 */

const joinPaths = paths => paths.join("/").replace(/\/\/+/g, "/");
/**
 * @private
 */

const normalizePathname = pathname => pathname.replace(/\/+$/, "").replace(/^\/*/, "/");
/**
 * @private
 */

const normalizeSearch = search => !search || search === "?" ? "" : search.startsWith("?") ? search : "?" + search;
/**
 * @private
 */

const normalizeHash = hash => !hash || hash === "#" ? "" : hash.startsWith("#") ? hash : "#" + hash;

/**
 * This is a shortcut for creating `application/json` responses. Converts `data`
 * to JSON and sets the `Content-Type` header.
 */
const json = function json(data, init) {
  if (init === void 0) {
    init = {};
  }

  let responseInit = typeof init === "number" ? {
    status: init
  } : init;
  let headers = new Headers(responseInit.headers);

  if (!headers.has("Content-Type")) {
    headers.set("Content-Type", "application/json; charset=utf-8");
  }

  return new Response(JSON.stringify(data), _extends({}, responseInit, {
    headers
  }));
};
class AbortedDeferredError extends Error {}
class DeferredData {
  constructor(data, responseInit) {
    this.pendingKeysSet = new Set();
    this.subscribers = new Set();
    this.deferredKeys = [];
    invariant(data && typeof data === "object" && !Array.isArray(data), "defer() only accepts plain objects"); // Set up an AbortController + Promise we can race against to exit early
    // cancellation

    let reject;
    this.abortPromise = new Promise((_, r) => reject = r);
    this.controller = new AbortController();

    let onAbort = () => reject(new AbortedDeferredError("Deferred data aborted"));

    this.unlistenAbortSignal = () => this.controller.signal.removeEventListener("abort", onAbort);

    this.controller.signal.addEventListener("abort", onAbort);
    this.data = Object.entries(data).reduce((acc, _ref) => {
      let [key, value] = _ref;
      return Object.assign(acc, {
        [key]: this.trackPromise(key, value)
      });
    }, {});

    if (this.done) {
      // All incoming values were resolved
      this.unlistenAbortSignal();
    }

    this.init = responseInit;
  }

  trackPromise(key, value) {
    if (!(value instanceof Promise)) {
      return value;
    }

    this.deferredKeys.push(key);
    this.pendingKeysSet.add(key); // We store a little wrapper promise that will be extended with
    // _data/_error props upon resolve/reject

    let promise = Promise.race([value, this.abortPromise]).then(data => this.onSettle(promise, key, null, data), error => this.onSettle(promise, key, error)); // Register rejection listeners to avoid uncaught promise rejections on
    // errors or aborted deferred values

    promise.catch(() => {});
    Object.defineProperty(promise, "_tracked", {
      get: () => true
    });
    return promise;
  }

  onSettle(promise, key, error, data) {
    if (this.controller.signal.aborted && error instanceof AbortedDeferredError) {
      this.unlistenAbortSignal();
      Object.defineProperty(promise, "_error", {
        get: () => error
      });
      return Promise.reject(error);
    }

    this.pendingKeysSet.delete(key);

    if (this.done) {
      // Nothing left to abort!
      this.unlistenAbortSignal();
    }

    if (error) {
      Object.defineProperty(promise, "_error", {
        get: () => error
      });
      this.emit(false, key);
      return Promise.reject(error);
    }

    Object.defineProperty(promise, "_data", {
      get: () => data
    });
    this.emit(false, key);
    return data;
  }

  emit(aborted, settledKey) {
    this.subscribers.forEach(subscriber => subscriber(aborted, settledKey));
  }

  subscribe(fn) {
    this.subscribers.add(fn);
    return () => this.subscribers.delete(fn);
  }

  cancel() {
    this.controller.abort();
    this.pendingKeysSet.forEach((v, k) => this.pendingKeysSet.delete(k));
    this.emit(true);
  }

  async resolveData(signal) {
    let aborted = false;

    if (!this.done) {
      let onAbort = () => this.cancel();

      signal.addEventListener("abort", onAbort);
      aborted = await new Promise(resolve => {
        this.subscribe(aborted => {
          signal.removeEventListener("abort", onAbort);

          if (aborted || this.done) {
            resolve(aborted);
          }
        });
      });
    }

    return aborted;
  }

  get done() {
    return this.pendingKeysSet.size === 0;
  }

  get unwrappedData() {
    invariant(this.data !== null && this.done, "Can only unwrap data on initialized and settled deferreds");
    return Object.entries(this.data).reduce((acc, _ref2) => {
      let [key, value] = _ref2;
      return Object.assign(acc, {
        [key]: unwrapTrackedPromise(value)
      });
    }, {});
  }

  get pendingKeys() {
    return Array.from(this.pendingKeysSet);
  }

}

function isTrackedPromise(value) {
  return value instanceof Promise && value._tracked === true;
}

function unwrapTrackedPromise(value) {
  if (!isTrackedPromise(value)) {
    return value;
  }

  if (value._error) {
    throw value._error;
  }

  return value._data;
}

const defer = function defer(data, init) {
  if (init === void 0) {
    init = {};
  }

  let responseInit = typeof init === "number" ? {
    status: init
  } : init;
  return new DeferredData(data, responseInit);
};

/**
 * A redirect response. Sets the status code and the `Location` header.
 * Defaults to "302 Found".
 */
const redirect = function redirect(url, init) {
  if (init === void 0) {
    init = 302;
  }

  let responseInit = init;

  if (typeof responseInit === "number") {
    responseInit = {
      status: responseInit
    };
  } else if (typeof responseInit.status === "undefined") {
    responseInit.status = 302;
  }

  let headers = new Headers(responseInit.headers);
  headers.set("Location", url);
  return new Response(null, _extends({}, responseInit, {
    headers
  }));
};
/**
 * @private
 * Utility class we use to hold auto-unwrapped 4xx/5xx Response bodies
 */

class ErrorResponse {
  constructor(status, statusText, data, internal) {
    if (internal === void 0) {
      internal = false;
    }

    this.status = status;
    this.statusText = statusText || "";
    this.internal = internal;

    if (data instanceof Error) {
      this.data = data.toString();
      this.error = data;
    } else {
      this.data = data;
    }
  }

}
/**
 * Check if the given error is an ErrorResponse generated from a 4xx/5xx
 * Response thrown from an action/loader
 */

function isRouteErrorResponse(error) {
  return error != null && typeof error.status === "number" && typeof error.statusText === "string" && typeof error.internal === "boolean" && "data" in error;
}

//#region Types and Constants
////////////////////////////////////////////////////////////////////////////////

/**
 * A Router instance manages all navigation and data loading/mutations
 */

const validMutationMethodsArr = ["post", "put", "patch", "delete"];
const validMutationMethods = new Set(validMutationMethodsArr);
const validRequestMethodsArr = ["get", ...validMutationMethodsArr];
const validRequestMethods = new Set(validRequestMethodsArr);
const redirectStatusCodes = new Set([301, 302, 303, 307, 308]);
const redirectPreserveMethodStatusCodes = new Set([307, 308]);
const IDLE_NAVIGATION = {
  state: "idle",
  location: undefined,
  formMethod: undefined,
  formAction: undefined,
  formEncType: undefined,
  formData: undefined
};
const IDLE_FETCHER = {
  state: "idle",
  data: undefined,
  formMethod: undefined,
  formAction: undefined,
  formEncType: undefined,
  formData: undefined
};
const IDLE_BLOCKER = {
  state: "unblocked",
  proceed: undefined,
  reset: undefined,
  location: undefined
};
const ABSOLUTE_URL_REGEX = /^(?:[a-z][a-z0-9+.-]*:|\/\/)/i;
const isBrowser = typeof window !== "undefined" && typeof window.document !== "undefined" && typeof window.document.createElement !== "undefined";
const isServer = !isBrowser; //#endregion
////////////////////////////////////////////////////////////////////////////////
//#region createRouter
////////////////////////////////////////////////////////////////////////////////

/**
 * Create a router and listen to history POP navigations
 */

function createRouter(init) {
  invariant(init.routes.length > 0, "You must provide a non-empty routes array to createRouter");
  let dataRoutes = convertRoutesToDataRoutes(init.routes); // Cleanup function for history

  let unlistenHistory = null; // Externally-provided functions to call on all state changes

  let subscribers = new Set(); // Externally-provided object to hold scroll restoration locations during routing

  let savedScrollPositions = null; // Externally-provided function to get scroll restoration keys

  let getScrollRestorationKey = null; // Externally-provided function to get current scroll position

  let getScrollPosition = null; // One-time flag to control the initial hydration scroll restoration.  Because
  // we don't get the saved positions from <ScrollRestoration /> until _after_
  // the initial render, we need to manually trigger a separate updateState to
  // send along the restoreScrollPosition
  // Set to true if we have `hydrationData` since we assume we were SSR'd and that
  // SSR did the initial scroll restoration.

  let initialScrollRestored = init.hydrationData != null;
  let initialMatches = matchRoutes(dataRoutes, init.history.location, init.basename);
  let initialErrors = null;

  if (initialMatches == null) {
    // If we do not match a user-provided-route, fall back to the root
    // to allow the error boundary to take over
    let error = getInternalRouterError(404, {
      pathname: init.history.location.pathname
    });
    let {
      matches,
      route
    } = getShortCircuitMatches(dataRoutes);
    initialMatches = matches;
    initialErrors = {
      [route.id]: error
    };
  }

  let initialized = !initialMatches.some(m => m.route.loader) || init.hydrationData != null;
  let router;
  let state = {
    historyAction: init.history.action,
    location: init.history.location,
    matches: initialMatches,
    initialized,
    navigation: IDLE_NAVIGATION,
    // Don't restore on initial updateState() if we were SSR'd
    restoreScrollPosition: init.hydrationData != null ? false : null,
    preventScrollReset: false,
    revalidation: "idle",
    loaderData: init.hydrationData && init.hydrationData.loaderData || {},
    actionData: init.hydrationData && init.hydrationData.actionData || null,
    errors: init.hydrationData && init.hydrationData.errors || initialErrors,
    fetchers: new Map(),
    blockers: new Map()
  }; // -- Stateful internal variables to manage navigations --
  // Current navigation in progress (to be committed in completeNavigation)

  let pendingAction = exports.Action.Pop; // Should the current navigation prevent the scroll reset if scroll cannot
  // be restored?

  let pendingPreventScrollReset = false; // AbortController for the active navigation

  let pendingNavigationController; // We use this to avoid touching history in completeNavigation if a
  // revalidation is entirely uninterrupted

  let isUninterruptedRevalidation = false; // Use this internal flag to force revalidation of all loaders:
  //  - submissions (completed or interrupted)
  //  - useRevalidate()
  //  - X-Remix-Revalidate (from redirect)

  let isRevalidationRequired = false; // Use this internal array to capture routes that require revalidation due
  // to a cancelled deferred on action submission

  let cancelledDeferredRoutes = []; // Use this internal array to capture fetcher loads that were cancelled by an
  // action navigation and require revalidation

  let cancelledFetcherLoads = []; // AbortControllers for any in-flight fetchers

  let fetchControllers = new Map(); // Track loads based on the order in which they started

  let incrementingLoadId = 0; // Track the outstanding pending navigation data load to be compared against
  // the globally incrementing load when a fetcher load lands after a completed
  // navigation

  let pendingNavigationLoadId = -1; // Fetchers that triggered data reloads as a result of their actions

  let fetchReloadIds = new Map(); // Fetchers that triggered redirect navigations from their actions

  let fetchRedirectIds = new Set(); // Most recent href/match for fetcher.load calls for fetchers

  let fetchLoadMatches = new Map(); // Store DeferredData instances for active route matches.  When a
  // route loader returns defer() we stick one in here.  Then, when a nested
  // promise resolves we update loaderData.  If a new navigation starts we
  // cancel active deferreds for eliminated routes.

  let activeDeferreds = new Map(); // Store blocker functions in a separate Map outside of router state since
  // we don't need to update UI state if they change

  let blockerFunctions = new Map(); // Flag to ignore the next history update, so we can revert the URL change on
  // a POP navigation that was blocked by the user without touching router state

  let ignoreNextHistoryUpdate = false; // Initialize the router, all side effects should be kicked off from here.
  // Implemented as a Fluent API for ease of:
  //   let router = createRouter(init).initialize();

  function initialize() {
    // If history informs us of a POP navigation, start the navigation but do not update
    // state.  We'll update our own state once the navigation completes
    unlistenHistory = init.history.listen(_ref => {
      let {
        action: historyAction,
        location,
        delta
      } = _ref;

      // Ignore this event if it was just us resetting the URL from a
      // blocked POP navigation
      if (ignoreNextHistoryUpdate) {
        ignoreNextHistoryUpdate = false;
        return;
      }

      warning(blockerFunctions.size === 0 || delta != null, "You are trying to use a blocker on a POP navigation to a location " + "that was not created by @remix-run/router. This will fail silently in " + "production. This can happen if you are navigating outside the router " + "via `window.history.pushState`/`window.location.hash` instead of using " + "router navigation APIs.  This can also happen if you are using " + "createHashRouter and the user manually changes the URL.");
      let blockerKey = shouldBlockNavigation({
        currentLocation: state.location,
        nextLocation: location,
        historyAction
      });

      if (blockerKey && delta != null) {
        // Restore the URL to match the current UI, but don't update router state
        ignoreNextHistoryUpdate = true;
        init.history.go(delta * -1); // Put the blocker into a blocked state

        updateBlocker(blockerKey, {
          state: "blocked",
          location,

          proceed() {
            updateBlocker(blockerKey, {
              state: "proceeding",
              proceed: undefined,
              reset: undefined,
              location
            }); // Re-do the same POP navigation we just blocked

            init.history.go(delta);
          },

          reset() {
            deleteBlocker(blockerKey);
            updateState({
              blockers: new Map(router.state.blockers)
            });
          }

        });
        return;
      }

      return startNavigation(historyAction, location);
    }); // Kick off initial data load if needed.  Use Pop to avoid modifying history

    if (!state.initialized) {
      startNavigation(exports.Action.Pop, state.location);
    }

    return router;
  } // Clean up a router and it's side effects


  function dispose() {
    if (unlistenHistory) {
      unlistenHistory();
    }

    subscribers.clear();
    pendingNavigationController && pendingNavigationController.abort();
    state.fetchers.forEach((_, key) => deleteFetcher(key));
    state.blockers.forEach((_, key) => deleteBlocker(key));
  } // Subscribe to state updates for the router


  function subscribe(fn) {
    subscribers.add(fn);
    return () => subscribers.delete(fn);
  } // Update our state and notify the calling context of the change


  function updateState(newState) {
    state = _extends({}, state, newState);
    subscribers.forEach(subscriber => subscriber(state));
  } // Complete a navigation returning the state.navigation back to the IDLE_NAVIGATION
  // and setting state.[historyAction/location/matches] to the new route.
  // - Location is a required param
  // - Navigation will always be set to IDLE_NAVIGATION
  // - Can pass any other state in newState


  function completeNavigation(location, newState) {
    var _location$state, _location$state2;

    // Deduce if we're in a loading/actionReload state:
    // - We have committed actionData in the store
    // - The current navigation was a mutation submission
    // - We're past the submitting state and into the loading state
    // - The location being loaded is not the result of a redirect
    let isActionReload = state.actionData != null && state.navigation.formMethod != null && isMutationMethod(state.navigation.formMethod) && state.navigation.state === "loading" && ((_location$state = location.state) == null ? void 0 : _location$state._isRedirect) !== true;
    let actionData;

    if (newState.actionData) {
      if (Object.keys(newState.actionData).length > 0) {
        actionData = newState.actionData;
      } else {
        // Empty actionData -> clear prior actionData due to an action error
        actionData = null;
      }
    } else if (isActionReload) {
      // Keep the current data if we're wrapping up the action reload
      actionData = state.actionData;
    } else {
      // Clear actionData on any other completed navigations
      actionData = null;
    } // Always preserve any existing loaderData from re-used routes


    let loaderData = newState.loaderData ? mergeLoaderData(state.loaderData, newState.loaderData, newState.matches || [], newState.errors) : state.loaderData; // On a successful navigation we can assume we got through all blockers
    // so we can start fresh

    for (let [key] of blockerFunctions) {
      deleteBlocker(key);
    } // Always respect the user flag.  Otherwise don't reset on mutation
    // submission navigations unless they redirect


    let preventScrollReset = pendingPreventScrollReset === true || state.navigation.formMethod != null && isMutationMethod(state.navigation.formMethod) && ((_location$state2 = location.state) == null ? void 0 : _location$state2._isRedirect) !== true;
    updateState(_extends({}, newState, {
      // matches, errors, fetchers go through as-is
      actionData,
      loaderData,
      historyAction: pendingAction,
      location,
      initialized: true,
      navigation: IDLE_NAVIGATION,
      revalidation: "idle",
      restoreScrollPosition: getSavedScrollPosition(location, newState.matches || state.matches),
      preventScrollReset,
      blockers: new Map(state.blockers)
    }));

    if (isUninterruptedRevalidation) ; else if (pendingAction === exports.Action.Pop) ; else if (pendingAction === exports.Action.Push) {
      init.history.push(location, location.state);
    } else if (pendingAction === exports.Action.Replace) {
      init.history.replace(location, location.state);
    } // Reset stateful navigation vars


    pendingAction = exports.Action.Pop;
    pendingPreventScrollReset = false;
    isUninterruptedRevalidation = false;
    isRevalidationRequired = false;
    cancelledDeferredRoutes = [];
    cancelledFetcherLoads = [];
  } // Trigger a navigation event, which can either be a numerical POP or a PUSH
  // replace with an optional submission


  async function navigate(to, opts) {
    if (typeof to === "number") {
      init.history.go(to);
      return;
    }

    let {
      path,
      submission,
      error
    } = normalizeNavigateOptions(to, opts);
    let currentLocation = state.location;
    let nextLocation = createLocation(state.location, path, opts && opts.state); // When using navigate as a PUSH/REPLACE we aren't reading an already-encoded
    // URL from window.location, so we need to encode it here so the behavior
    // remains the same as POP and non-data-router usages.  new URL() does all
    // the same encoding we'd get from a history.pushState/window.location read
    // without having to touch history

    nextLocation = _extends({}, nextLocation, init.history.encodeLocation(nextLocation));
    let userReplace = opts && opts.replace != null ? opts.replace : undefined;
    let historyAction = exports.Action.Push;

    if (userReplace === true) {
      historyAction = exports.Action.Replace;
    } else if (userReplace === false) ; else if (submission != null && isMutationMethod(submission.formMethod) && submission.formAction === state.location.pathname + state.location.search) {
      // By default on submissions to the current location we REPLACE so that
      // users don't have to double-click the back button to get to the prior
      // location.  If the user redirects to a different location from the
      // action/loader this will be ignored and the redirect will be a PUSH
      historyAction = exports.Action.Replace;
    }

    let preventScrollReset = opts && "preventScrollReset" in opts ? opts.preventScrollReset === true : undefined;
    let blockerKey = shouldBlockNavigation({
      currentLocation,
      nextLocation,
      historyAction
    });

    if (blockerKey) {
      // Put the blocker into a blocked state
      updateBlocker(blockerKey, {
        state: "blocked",
        location: nextLocation,

        proceed() {
          updateBlocker(blockerKey, {
            state: "proceeding",
            proceed: undefined,
            reset: undefined,
            location: nextLocation
          }); // Send the same navigation through

          navigate(to, opts);
        },

        reset() {
          deleteBlocker(blockerKey);
          updateState({
            blockers: new Map(state.blockers)
          });
        }

      });
      return;
    }

    return await startNavigation(historyAction, nextLocation, {
      submission,
      // Send through the formData serialization error if we have one so we can
      // render at the right error boundary after we match routes
      pendingError: error,
      preventScrollReset,
      replace: opts && opts.replace
    });
  } // Revalidate all current loaders.  If a navigation is in progress or if this
  // is interrupted by a navigation, allow this to "succeed" by calling all
  // loaders during the next loader round


  function revalidate() {
    interruptActiveLoads();
    updateState({
      revalidation: "loading"
    }); // If we're currently submitting an action, we don't need to start a new
    // navigation, we'll just let the follow up loader execution call all loaders

    if (state.navigation.state === "submitting") {
      return;
    } // If we're currently in an idle state, start a new navigation for the current
    // action/location and mark it as uninterrupted, which will skip the history
    // update in completeNavigation


    if (state.navigation.state === "idle") {
      startNavigation(state.historyAction, state.location, {
        startUninterruptedRevalidation: true
      });
      return;
    } // Otherwise, if we're currently in a loading state, just start a new
    // navigation to the navigation.location but do not trigger an uninterrupted
    // revalidation so that history correctly updates once the navigation completes


    startNavigation(pendingAction || state.historyAction, state.navigation.location, {
      overrideNavigation: state.navigation
    });
  } // Start a navigation to the given action/location.  Can optionally provide a
  // overrideNavigation which will override the normalLoad in the case of a redirect
  // navigation


  async function startNavigation(historyAction, location, opts) {
    // Abort any in-progress navigations and start a new one. Unset any ongoing
    // uninterrupted revalidations unless told otherwise, since we want this
    // new navigation to update history normally
    pendingNavigationController && pendingNavigationController.abort();
    pendingNavigationController = null;
    pendingAction = historyAction;
    isUninterruptedRevalidation = (opts && opts.startUninterruptedRevalidation) === true; // Save the current scroll position every time we start a new navigation,
    // and track whether we should reset scroll on completion

    saveScrollPosition(state.location, state.matches);
    pendingPreventScrollReset = (opts && opts.preventScrollReset) === true;
    let loadingNavigation = opts && opts.overrideNavigation;
    let matches = matchRoutes(dataRoutes, location, init.basename); // Short circuit with a 404 on the root error boundary if we match nothing

    if (!matches) {
      let error = getInternalRouterError(404, {
        pathname: location.pathname
      });
      let {
        matches: notFoundMatches,
        route
      } = getShortCircuitMatches(dataRoutes); // Cancel all pending deferred on 404s since we don't keep any routes

      cancelActiveDeferreds();
      completeNavigation(location, {
        matches: notFoundMatches,
        loaderData: {},
        errors: {
          [route.id]: error
        }
      });
      return;
    } // Short circuit if it's only a hash change and not a mutation submission
    // For example, on /page#hash and submit a <Form method="post"> which will
    // default to a navigation to /page


    if (isHashChangeOnly(state.location, location) && !(opts && opts.submission && isMutationMethod(opts.submission.formMethod))) {
      completeNavigation(location, {
        matches
      });
      return;
    } // Create a controller/Request for this navigation


    pendingNavigationController = new AbortController();
    let request = createClientSideRequest(init.history, location, pendingNavigationController.signal, opts && opts.submission);
    let pendingActionData;
    let pendingError;

    if (opts && opts.pendingError) {
      // If we have a pendingError, it means the user attempted a GET submission
      // with binary FormData so assign here and skip to handleLoaders.  That
      // way we handle calling loaders above the boundary etc.  It's not really
      // different from an actionError in that sense.
      pendingError = {
        [findNearestBoundary(matches).route.id]: opts.pendingError
      };
    } else if (opts && opts.submission && isMutationMethod(opts.submission.formMethod)) {
      // Call action if we received an action submission
      let actionOutput = await handleAction(request, location, opts.submission, matches, {
        replace: opts.replace
      });

      if (actionOutput.shortCircuited) {
        return;
      }

      pendingActionData = actionOutput.pendingActionData;
      pendingError = actionOutput.pendingActionError;

      let navigation = _extends({
        state: "loading",
        location
      }, opts.submission);

      loadingNavigation = navigation; // Create a GET request for the loaders

      request = new Request(request.url, {
        signal: request.signal
      });
    } // Call loaders


    let {
      shortCircuited,
      loaderData,
      errors
    } = await handleLoaders(request, location, matches, loadingNavigation, opts && opts.submission, opts && opts.replace, pendingActionData, pendingError);

    if (shortCircuited) {
      return;
    } // Clean up now that the action/loaders have completed.  Don't clean up if
    // we short circuited because pendingNavigationController will have already
    // been assigned to a new controller for the next navigation


    pendingNavigationController = null;
    completeNavigation(location, _extends({
      matches
    }, pendingActionData ? {
      actionData: pendingActionData
    } : {}, {
      loaderData,
      errors
    }));
  } // Call the action matched by the leaf route for this navigation and handle
  // redirects/errors


  async function handleAction(request, location, submission, matches, opts) {
    interruptActiveLoads(); // Put us in a submitting state

    let navigation = _extends({
      state: "submitting",
      location
    }, submission);

    updateState({
      navigation
    }); // Call our action and get the result

    let result;
    let actionMatch = getTargetMatch(matches, location);

    if (!actionMatch.route.action) {
      result = {
        type: ResultType.error,
        error: getInternalRouterError(405, {
          method: request.method,
          pathname: location.pathname,
          routeId: actionMatch.route.id
        })
      };
    } else {
      result = await callLoaderOrAction("action", request, actionMatch, matches, router.basename);

      if (request.signal.aborted) {
        return {
          shortCircuited: true
        };
      }
    }

    if (isRedirectResult(result)) {
      let replace;

      if (opts && opts.replace != null) {
        replace = opts.replace;
      } else {
        // If the user didn't explicity indicate replace behavior, replace if
        // we redirected to the exact same location we're currently at to avoid
        // double back-buttons
        replace = result.location === state.location.pathname + state.location.search;
      }

      await startRedirectNavigation(state, result, {
        submission,
        replace
      });
      return {
        shortCircuited: true
      };
    }

    if (isErrorResult(result)) {
      // Store off the pending error - we use it to determine which loaders
      // to call and will commit it when we complete the navigation
      let boundaryMatch = findNearestBoundary(matches, actionMatch.route.id); // By default, all submissions are REPLACE navigations, but if the
      // action threw an error that'll be rendered in an errorElement, we fall
      // back to PUSH so that the user can use the back button to get back to
      // the pre-submission form location to try again

      if ((opts && opts.replace) !== true) {
        pendingAction = exports.Action.Push;
      }

      return {
        // Send back an empty object we can use to clear out any prior actionData
        pendingActionData: {},
        pendingActionError: {
          [boundaryMatch.route.id]: result.error
        }
      };
    }

    if (isDeferredResult(result)) {
      throw getInternalRouterError(400, {
        type: "defer-action"
      });
    }

    return {
      pendingActionData: {
        [actionMatch.route.id]: result.data
      }
    };
  } // Call all applicable loaders for the given matches, handling redirects,
  // errors, etc.


  async function handleLoaders(request, location, matches, overrideNavigation, submission, replace, pendingActionData, pendingError) {
    // Figure out the right navigation we want to use for data loading
    let loadingNavigation = overrideNavigation;

    if (!loadingNavigation) {
      let navigation = _extends({
        state: "loading",
        location,
        formMethod: undefined,
        formAction: undefined,
        formEncType: undefined,
        formData: undefined
      }, submission);

      loadingNavigation = navigation;
    } // If this was a redirect from an action we don't have a "submission" but
    // we have it on the loading navigation so use that if available


    let activeSubmission = submission ? submission : loadingNavigation.formMethod && loadingNavigation.formAction && loadingNavigation.formData && loadingNavigation.formEncType ? {
      formMethod: loadingNavigation.formMethod,
      formAction: loadingNavigation.formAction,
      formData: loadingNavigation.formData,
      formEncType: loadingNavigation.formEncType
    } : undefined;
    let [matchesToLoad, revalidatingFetchers] = getMatchesToLoad(init.history, state, matches, activeSubmission, location, isRevalidationRequired, cancelledDeferredRoutes, cancelledFetcherLoads, pendingActionData, pendingError, fetchLoadMatches); // Cancel pending deferreds for no-longer-matched routes or routes we're
    // about to reload.  Note that if this is an action reload we would have
    // already cancelled all pending deferreds so this would be a no-op

    cancelActiveDeferreds(routeId => !(matches && matches.some(m => m.route.id === routeId)) || matchesToLoad && matchesToLoad.some(m => m.route.id === routeId)); // Short circuit if we have no loaders to run

    if (matchesToLoad.length === 0 && revalidatingFetchers.length === 0) {
      completeNavigation(location, _extends({
        matches,
        loaderData: {},
        // Commit pending error if we're short circuiting
        errors: pendingError || null
      }, pendingActionData ? {
        actionData: pendingActionData
      } : {}));
      return {
        shortCircuited: true
      };
    } // If this is an uninterrupted revalidation, we remain in our current idle
    // state.  If not, we need to switch to our loading state and load data,
    // preserving any new action data or existing action data (in the case of
    // a revalidation interrupting an actionReload)


    if (!isUninterruptedRevalidation) {
      revalidatingFetchers.forEach(rf => {
        let fetcher = state.fetchers.get(rf.key);
        let revalidatingFetcher = {
          state: "loading",
          data: fetcher && fetcher.data,
          formMethod: undefined,
          formAction: undefined,
          formEncType: undefined,
          formData: undefined,
          " _hasFetcherDoneAnything ": true
        };
        state.fetchers.set(rf.key, revalidatingFetcher);
      });
      let actionData = pendingActionData || state.actionData;
      updateState(_extends({
        navigation: loadingNavigation
      }, actionData ? Object.keys(actionData).length === 0 ? {
        actionData: null
      } : {
        actionData
      } : {}, revalidatingFetchers.length > 0 ? {
        fetchers: new Map(state.fetchers)
      } : {}));
    }

    pendingNavigationLoadId = ++incrementingLoadId;
    revalidatingFetchers.forEach(rf => fetchControllers.set(rf.key, pendingNavigationController));
    let {
      results,
      loaderResults,
      fetcherResults
    } = await callLoadersAndMaybeResolveData(state.matches, matches, matchesToLoad, revalidatingFetchers, request);

    if (request.signal.aborted) {
      return {
        shortCircuited: true
      };
    } // Clean up _after_ loaders have completed.  Don't clean up if we short
    // circuited because fetchControllers would have been aborted and
    // reassigned to new controllers for the next navigation


    revalidatingFetchers.forEach(rf => fetchControllers.delete(rf.key)); // If any loaders returned a redirect Response, start a new REPLACE navigation

    let redirect = findRedirect(results);

    if (redirect) {
      await startRedirectNavigation(state, redirect, {
        replace
      });
      return {
        shortCircuited: true
      };
    } // Process and commit output from loaders


    let {
      loaderData,
      errors
    } = processLoaderData(state, matches, matchesToLoad, loaderResults, pendingError, revalidatingFetchers, fetcherResults, activeDeferreds); // Wire up subscribers to update loaderData as promises settle

    activeDeferreds.forEach((deferredData, routeId) => {
      deferredData.subscribe(aborted => {
        // Note: No need to updateState here since the TrackedPromise on
        // loaderData is stable across resolve/reject
        // Remove this instance if we were aborted or if promises have settled
        if (aborted || deferredData.done) {
          activeDeferreds.delete(routeId);
        }
      });
    });
    markFetchRedirectsDone();
    let didAbortFetchLoads = abortStaleFetchLoads(pendingNavigationLoadId);
    return _extends({
      loaderData,
      errors
    }, didAbortFetchLoads || revalidatingFetchers.length > 0 ? {
      fetchers: new Map(state.fetchers)
    } : {});
  }

  function getFetcher(key) {
    return state.fetchers.get(key) || IDLE_FETCHER;
  } // Trigger a fetcher load/submit for the given fetcher key


  function fetch(key, routeId, href, opts) {
    if (isServer) {
      throw new Error("router.fetch() was called during the server render, but it shouldn't be. " + "You are likely calling a useFetcher() method in the body of your component. " + "Try moving it to a useEffect or a callback.");
    }

    if (fetchControllers.has(key)) abortFetcher(key);
    let matches = matchRoutes(dataRoutes, href, init.basename);

    if (!matches) {
      setFetcherError(key, routeId, getInternalRouterError(404, {
        pathname: href
      }));
      return;
    }

    let {
      path,
      submission
    } = normalizeNavigateOptions(href, opts, true);
    let match = getTargetMatch(matches, path);
    pendingPreventScrollReset = (opts && opts.preventScrollReset) === true;

    if (submission && isMutationMethod(submission.formMethod)) {
      handleFetcherAction(key, routeId, path, match, matches, submission);
      return;
    } // Store off the match so we can call it's shouldRevalidate on subsequent
    // revalidations


    fetchLoadMatches.set(key, {
      routeId,
      path,
      match,
      matches
    });
    handleFetcherLoader(key, routeId, path, match, matches, submission);
  } // Call the action for the matched fetcher.submit(), and then handle redirects,
  // errors, and revalidation


  async function handleFetcherAction(key, routeId, path, match, requestMatches, submission) {
    interruptActiveLoads();
    fetchLoadMatches.delete(key);

    if (!match.route.action) {
      let error = getInternalRouterError(405, {
        method: submission.formMethod,
        pathname: path,
        routeId: routeId
      });
      setFetcherError(key, routeId, error);
      return;
    } // Put this fetcher into it's submitting state


    let existingFetcher = state.fetchers.get(key);

    let fetcher = _extends({
      state: "submitting"
    }, submission, {
      data: existingFetcher && existingFetcher.data,
      " _hasFetcherDoneAnything ": true
    });

    state.fetchers.set(key, fetcher);
    updateState({
      fetchers: new Map(state.fetchers)
    }); // Call the action for the fetcher

    let abortController = new AbortController();
    let fetchRequest = createClientSideRequest(init.history, path, abortController.signal, submission);
    fetchControllers.set(key, abortController);
    let actionResult = await callLoaderOrAction("action", fetchRequest, match, requestMatches, router.basename);

    if (fetchRequest.signal.aborted) {
      // We can delete this so long as we weren't aborted by ou our own fetcher
      // re-submit which would have put _new_ controller is in fetchControllers
      if (fetchControllers.get(key) === abortController) {
        fetchControllers.delete(key);
      }

      return;
    }

    if (isRedirectResult(actionResult)) {
      fetchControllers.delete(key);
      fetchRedirectIds.add(key);

      let loadingFetcher = _extends({
        state: "loading"
      }, submission, {
        data: undefined,
        " _hasFetcherDoneAnything ": true
      });

      state.fetchers.set(key, loadingFetcher);
      updateState({
        fetchers: new Map(state.fetchers)
      });
      return startRedirectNavigation(state, actionResult, {
        isFetchActionRedirect: true
      });
    } // Process any non-redirect errors thrown


    if (isErrorResult(actionResult)) {
      setFetcherError(key, routeId, actionResult.error);
      return;
    }

    if (isDeferredResult(actionResult)) {
      throw getInternalRouterError(400, {
        type: "defer-action"
      });
    } // Start the data load for current matches, or the next location if we're
    // in the middle of a navigation


    let nextLocation = state.navigation.location || state.location;
    let revalidationRequest = createClientSideRequest(init.history, nextLocation, abortController.signal);
    let matches = state.navigation.state !== "idle" ? matchRoutes(dataRoutes, state.navigation.location, init.basename) : state.matches;
    invariant(matches, "Didn't find any matches after fetcher action");
    let loadId = ++incrementingLoadId;
    fetchReloadIds.set(key, loadId);

    let loadFetcher = _extends({
      state: "loading",
      data: actionResult.data
    }, submission, {
      " _hasFetcherDoneAnything ": true
    });

    state.fetchers.set(key, loadFetcher);
    let [matchesToLoad, revalidatingFetchers] = getMatchesToLoad(init.history, state, matches, submission, nextLocation, isRevalidationRequired, cancelledDeferredRoutes, cancelledFetcherLoads, {
      [match.route.id]: actionResult.data
    }, undefined, // No need to send through errors since we short circuit above
    fetchLoadMatches); // Put all revalidating fetchers into the loading state, except for the
    // current fetcher which we want to keep in it's current loading state which
    // contains it's action submission info + action data

    revalidatingFetchers.filter(rf => rf.key !== key).forEach(rf => {
      let staleKey = rf.key;
      let existingFetcher = state.fetchers.get(staleKey);
      let revalidatingFetcher = {
        state: "loading",
        data: existingFetcher && existingFetcher.data,
        formMethod: undefined,
        formAction: undefined,
        formEncType: undefined,
        formData: undefined,
        " _hasFetcherDoneAnything ": true
      };
      state.fetchers.set(staleKey, revalidatingFetcher);
      fetchControllers.set(staleKey, abortController);
    });
    updateState({
      fetchers: new Map(state.fetchers)
    });
    let {
      results,
      loaderResults,
      fetcherResults
    } = await callLoadersAndMaybeResolveData(state.matches, matches, matchesToLoad, revalidatingFetchers, revalidationRequest);

    if (abortController.signal.aborted) {
      return;
    }

    fetchReloadIds.delete(key);
    fetchControllers.delete(key);
    revalidatingFetchers.forEach(r => fetchControllers.delete(r.key));
    let redirect = findRedirect(results);

    if (redirect) {
      return startRedirectNavigation(state, redirect);
    } // Process and commit output from loaders


    let {
      loaderData,
      errors
    } = processLoaderData(state, state.matches, matchesToLoad, loaderResults, undefined, revalidatingFetchers, fetcherResults, activeDeferreds);
    let doneFetcher = {
      state: "idle",
      data: actionResult.data,
      formMethod: undefined,
      formAction: undefined,
      formEncType: undefined,
      formData: undefined,
      " _hasFetcherDoneAnything ": true
    };
    state.fetchers.set(key, doneFetcher);
    let didAbortFetchLoads = abortStaleFetchLoads(loadId); // If we are currently in a navigation loading state and this fetcher is
    // more recent than the navigation, we want the newer data so abort the
    // navigation and complete it with the fetcher data

    if (state.navigation.state === "loading" && loadId > pendingNavigationLoadId) {
      invariant(pendingAction, "Expected pending action");
      pendingNavigationController && pendingNavigationController.abort();
      completeNavigation(state.navigation.location, {
        matches,
        loaderData,
        errors,
        fetchers: new Map(state.fetchers)
      });
    } else {
      // otherwise just update with the fetcher data, preserving any existing
      // loaderData for loaders that did not need to reload.  We have to
      // manually merge here since we aren't going through completeNavigation
      updateState(_extends({
        errors,
        loaderData: mergeLoaderData(state.loaderData, loaderData, matches, errors)
      }, didAbortFetchLoads ? {
        fetchers: new Map(state.fetchers)
      } : {}));
      isRevalidationRequired = false;
    }
  } // Call the matched loader for fetcher.load(), handling redirects, errors, etc.


  async function handleFetcherLoader(key, routeId, path, match, matches, submission) {
    let existingFetcher = state.fetchers.get(key); // Put this fetcher into it's loading state

    let loadingFetcher = _extends({
      state: "loading",
      formMethod: undefined,
      formAction: undefined,
      formEncType: undefined,
      formData: undefined
    }, submission, {
      data: existingFetcher && existingFetcher.data,
      " _hasFetcherDoneAnything ": true
    });

    state.fetchers.set(key, loadingFetcher);
    updateState({
      fetchers: new Map(state.fetchers)
    }); // Call the loader for this fetcher route match

    let abortController = new AbortController();
    let fetchRequest = createClientSideRequest(init.history, path, abortController.signal);
    fetchControllers.set(key, abortController);
    let result = await callLoaderOrAction("loader", fetchRequest, match, matches, router.basename); // Deferred isn't supported for fetcher loads, await everything and treat it
    // as a normal load.  resolveDeferredData will return undefined if this
    // fetcher gets aborted, so we just leave result untouched and short circuit
    // below if that happens

    if (isDeferredResult(result)) {
      result = (await resolveDeferredData(result, fetchRequest.signal, true)) || result;
    } // We can delete this so long as we weren't aborted by ou our own fetcher
    // re-load which would have put _new_ controller is in fetchControllers


    if (fetchControllers.get(key) === abortController) {
      fetchControllers.delete(key);
    }

    if (fetchRequest.signal.aborted) {
      return;
    } // If the loader threw a redirect Response, start a new REPLACE navigation


    if (isRedirectResult(result)) {
      await startRedirectNavigation(state, result);
      return;
    } // Process any non-redirect errors thrown


    if (isErrorResult(result)) {
      let boundaryMatch = findNearestBoundary(state.matches, routeId);
      state.fetchers.delete(key); // TODO: In remix, this would reset to IDLE_NAVIGATION if it was a catch -
      // do we need to behave any differently with our non-redirect errors?
      // What if it was a non-redirect Response?

      updateState({
        fetchers: new Map(state.fetchers),
        errors: {
          [boundaryMatch.route.id]: result.error
        }
      });
      return;
    }

    invariant(!isDeferredResult(result), "Unhandled fetcher deferred data"); // Put the fetcher back into an idle state

    let doneFetcher = {
      state: "idle",
      data: result.data,
      formMethod: undefined,
      formAction: undefined,
      formEncType: undefined,
      formData: undefined,
      " _hasFetcherDoneAnything ": true
    };
    state.fetchers.set(key, doneFetcher);
    updateState({
      fetchers: new Map(state.fetchers)
    });
  }
  /**
   * Utility function to handle redirects returned from an action or loader.
   * Normally, a redirect "replaces" the navigation that triggered it.  So, for
   * example:
   *
   *  - user is on /a
   *  - user clicks a link to /b
   *  - loader for /b redirects to /c
   *
   * In a non-JS app the browser would track the in-flight navigation to /b and
   * then replace it with /c when it encountered the redirect response.  In
   * the end it would only ever update the URL bar with /c.
   *
   * In client-side routing using pushState/replaceState, we aim to emulate
   * this behavior and we also do not update history until the end of the
   * navigation (including processed redirects).  This means that we never
   * actually touch history until we've processed redirects, so we just use
   * the history action from the original navigation (PUSH or REPLACE).
   */


  async function startRedirectNavigation(state, redirect, _temp) {
    var _window;

    let {
      submission,
      replace,
      isFetchActionRedirect
    } = _temp === void 0 ? {} : _temp;

    if (redirect.revalidate) {
      isRevalidationRequired = true;
    }

    let redirectLocation = createLocation(state.location, redirect.location, // TODO: This can be removed once we get rid of useTransition in Remix v2
    _extends({
      _isRedirect: true
    }, isFetchActionRedirect ? {
      _isFetchActionRedirect: true
    } : {}));
    invariant(redirectLocation, "Expected a location on the redirect navigation"); // Check if this an absolute external redirect that goes to a new origin

    if (ABSOLUTE_URL_REGEX.test(redirect.location) && isBrowser && typeof ((_window = window) == null ? void 0 : _window.location) !== "undefined") {
      let newOrigin = init.history.createURL(redirect.location).origin;

      if (window.location.origin !== newOrigin) {
        if (replace) {
          window.location.replace(redirect.location);
        } else {
          window.location.assign(redirect.location);
        }

        return;
      }
    } // There's no need to abort on redirects, since we don't detect the
    // redirect until the action/loaders have settled


    pendingNavigationController = null;
    let redirectHistoryAction = replace === true ? exports.Action.Replace : exports.Action.Push; // Use the incoming submission if provided, fallback on the active one in
    // state.navigation

    let {
      formMethod,
      formAction,
      formEncType,
      formData
    } = state.navigation;

    if (!submission && formMethod && formAction && formData && formEncType) {
      submission = {
        formMethod,
        formAction,
        formEncType,
        formData
      };
    } // If this was a 307/308 submission we want to preserve the HTTP method and
    // re-submit the GET/POST/PUT/PATCH/DELETE as a submission navigation to the
    // redirected location


    if (redirectPreserveMethodStatusCodes.has(redirect.status) && submission && isMutationMethod(submission.formMethod)) {
      await startNavigation(redirectHistoryAction, redirectLocation, {
        submission: _extends({}, submission, {
          formAction: redirect.location
        }),
        // Preserve this flag across redirects
        preventScrollReset: pendingPreventScrollReset
      });
    } else {
      // Otherwise, we kick off a new loading navigation, preserving the
      // submission info for the duration of this navigation
      await startNavigation(redirectHistoryAction, redirectLocation, {
        overrideNavigation: {
          state: "loading",
          location: redirectLocation,
          formMethod: submission ? submission.formMethod : undefined,
          formAction: submission ? submission.formAction : undefined,
          formEncType: submission ? submission.formEncType : undefined,
          formData: submission ? submission.formData : undefined
        },
        // Preserve this flag across redirects
        preventScrollReset: pendingPreventScrollReset
      });
    }
  }

  async function callLoadersAndMaybeResolveData(currentMatches, matches, matchesToLoad, fetchersToLoad, request) {
    // Call all navigation loaders and revalidating fetcher loaders in parallel,
    // then slice off the results into separate arrays so we can handle them
    // accordingly
    let results = await Promise.all([...matchesToLoad.map(match => callLoaderOrAction("loader", request, match, matches, router.basename)), ...fetchersToLoad.map(f => callLoaderOrAction("loader", createClientSideRequest(init.history, f.path, request.signal), f.match, f.matches, router.basename))]);
    let loaderResults = results.slice(0, matchesToLoad.length);
    let fetcherResults = results.slice(matchesToLoad.length);
    await Promise.all([resolveDeferredResults(currentMatches, matchesToLoad, loaderResults, request.signal, false, state.loaderData), resolveDeferredResults(currentMatches, fetchersToLoad.map(f => f.match), fetcherResults, request.signal, true)]);
    return {
      results,
      loaderResults,
      fetcherResults
    };
  }

  function interruptActiveLoads() {
    // Every interruption triggers a revalidation
    isRevalidationRequired = true; // Cancel pending route-level deferreds and mark cancelled routes for
    // revalidation

    cancelledDeferredRoutes.push(...cancelActiveDeferreds()); // Abort in-flight fetcher loads

    fetchLoadMatches.forEach((_, key) => {
      if (fetchControllers.has(key)) {
        cancelledFetcherLoads.push(key);
        abortFetcher(key);
      }
    });
  }

  function setFetcherError(key, routeId, error) {
    let boundaryMatch = findNearestBoundary(state.matches, routeId);
    deleteFetcher(key);
    updateState({
      errors: {
        [boundaryMatch.route.id]: error
      },
      fetchers: new Map(state.fetchers)
    });
  }

  function deleteFetcher(key) {
    if (fetchControllers.has(key)) abortFetcher(key);
    fetchLoadMatches.delete(key);
    fetchReloadIds.delete(key);
    fetchRedirectIds.delete(key);
    state.fetchers.delete(key);
  }

  function abortFetcher(key) {
    let controller = fetchControllers.get(key);
    invariant(controller, "Expected fetch controller: " + key);
    controller.abort();
    fetchControllers.delete(key);
  }

  function markFetchersDone(keys) {
    for (let key of keys) {
      let fetcher = getFetcher(key);
      let doneFetcher = {
        state: "idle",
        data: fetcher.data,
        formMethod: undefined,
        formAction: undefined,
        formEncType: undefined,
        formData: undefined,
        " _hasFetcherDoneAnything ": true
      };
      state.fetchers.set(key, doneFetcher);
    }
  }

  function markFetchRedirectsDone() {
    let doneKeys = [];

    for (let key of fetchRedirectIds) {
      let fetcher = state.fetchers.get(key);
      invariant(fetcher, "Expected fetcher: " + key);

      if (fetcher.state === "loading") {
        fetchRedirectIds.delete(key);
        doneKeys.push(key);
      }
    }

    markFetchersDone(doneKeys);
  }

  function abortStaleFetchLoads(landedId) {
    let yeetedKeys = [];

    for (let [key, id] of fetchReloadIds) {
      if (id < landedId) {
        let fetcher = state.fetchers.get(key);
        invariant(fetcher, "Expected fetcher: " + key);

        if (fetcher.state === "loading") {
          abortFetcher(key);
          fetchReloadIds.delete(key);
          yeetedKeys.push(key);
        }
      }
    }

    markFetchersDone(yeetedKeys);
    return yeetedKeys.length > 0;
  }

  function getBlocker(key, fn) {
    let blocker = state.blockers.get(key) || IDLE_BLOCKER;

    if (blockerFunctions.get(key) !== fn) {
      blockerFunctions.set(key, fn);
    }

    return blocker;
  }

  function deleteBlocker(key) {
    state.blockers.delete(key);
    blockerFunctions.delete(key);
  } // Utility function to update blockers, ensuring valid state transitions


  function updateBlocker(key, newBlocker) {
    let blocker = state.blockers.get(key) || IDLE_BLOCKER; // Poor mans state machine :)
    // https://mermaid.live/edit#pako:eNqVkc9OwzAMxl8l8nnjAYrEtDIOHEBIgwvKJTReGy3_lDpIqO27k6awMG0XcrLlnz87nwdonESogKXXBuE79rq75XZO3-yHds0RJVuv70YrPlUrCEe2HfrORS3rubqZfuhtpg5C9wk5tZ4VKcRUq88q9Z8RS0-48cE1iHJkL0ugbHuFLus9L6spZy8nX9MP2CNdomVaposqu3fGayT8T8-jJQwhepo_UtpgBQaDEUom04dZhAN1aJBDlUKJBxE1ceB2Smj0Mln-IBW5AFU2dwUiktt_2Qaq2dBfaKdEup85UV7Yd-dKjlnkabl2Pvr0DTkTreM

    invariant(blocker.state === "unblocked" && newBlocker.state === "blocked" || blocker.state === "blocked" && newBlocker.state === "blocked" || blocker.state === "blocked" && newBlocker.state === "proceeding" || blocker.state === "blocked" && newBlocker.state === "unblocked" || blocker.state === "proceeding" && newBlocker.state === "unblocked", "Invalid blocker state transition: " + blocker.state + " -> " + newBlocker.state);
    state.blockers.set(key, newBlocker);
    updateState({
      blockers: new Map(state.blockers)
    });
  }

  function shouldBlockNavigation(_ref2) {
    let {
      currentLocation,
      nextLocation,
      historyAction
    } = _ref2;

    if (blockerFunctions.size === 0) {
      return;
    } // We ony support a single active blocker at the moment since we don't have
    // any compelling use cases for multi-blocker yet


    if (blockerFunctions.size > 1) {
      warning(false, "A router only supports one blocker at a time");
    }

    let entries = Array.from(blockerFunctions.entries());
    let [blockerKey, blockerFunction] = entries[entries.length - 1];
    let blocker = state.blockers.get(blockerKey);

    if (blocker && blocker.state === "proceeding") {
      // If the blocker is currently proceeding, we don't need to re-check
      // it and can let this navigation continue
      return;
    } // At this point, we know we're unblocked/blocked so we need to check the
    // user-provided blocker function


    if (blockerFunction({
      currentLocation,
      nextLocation,
      historyAction
    })) {
      return blockerKey;
    }
  }

  function cancelActiveDeferreds(predicate) {
    let cancelledRouteIds = [];
    activeDeferreds.forEach((dfd, routeId) => {
      if (!predicate || predicate(routeId)) {
        // Cancel the deferred - but do not remove from activeDeferreds here -
        // we rely on the subscribers to do that so our tests can assert proper
        // cleanup via _internalActiveDeferreds
        dfd.cancel();
        cancelledRouteIds.push(routeId);
        activeDeferreds.delete(routeId);
      }
    });
    return cancelledRouteIds;
  } // Opt in to capturing and reporting scroll positions during navigations,
  // used by the <ScrollRestoration> component


  function enableScrollRestoration(positions, getPosition, getKey) {
    savedScrollPositions = positions;
    getScrollPosition = getPosition;

    getScrollRestorationKey = getKey || (location => location.key); // Perform initial hydration scroll restoration, since we miss the boat on
    // the initial updateState() because we've not yet rendered <ScrollRestoration/>
    // and therefore have no savedScrollPositions available


    if (!initialScrollRestored && state.navigation === IDLE_NAVIGATION) {
      initialScrollRestored = true;
      let y = getSavedScrollPosition(state.location, state.matches);

      if (y != null) {
        updateState({
          restoreScrollPosition: y
        });
      }
    }

    return () => {
      savedScrollPositions = null;
      getScrollPosition = null;
      getScrollRestorationKey = null;
    };
  }

  function saveScrollPosition(location, matches) {
    if (savedScrollPositions && getScrollRestorationKey && getScrollPosition) {
      let userMatches = matches.map(m => createUseMatchesMatch(m, state.loaderData));
      let key = getScrollRestorationKey(location, userMatches) || location.key;
      savedScrollPositions[key] = getScrollPosition();
    }
  }

  function getSavedScrollPosition(location, matches) {
    if (savedScrollPositions && getScrollRestorationKey && getScrollPosition) {
      let userMatches = matches.map(m => createUseMatchesMatch(m, state.loaderData));
      let key = getScrollRestorationKey(location, userMatches) || location.key;
      let y = savedScrollPositions[key];

      if (typeof y === "number") {
        return y;
      }
    }

    return null;
  }

  router = {
    get basename() {
      return init.basename;
    },

    get state() {
      return state;
    },

    get routes() {
      return dataRoutes;
    },

    initialize,
    subscribe,
    enableScrollRestoration,
    navigate,
    fetch,
    revalidate,
    // Passthrough to history-aware createHref used by useHref so we get proper
    // hash-aware URLs in DOM paths
    createHref: to => init.history.createHref(to),
    encodeLocation: to => init.history.encodeLocation(to),
    getFetcher,
    deleteFetcher,
    dispose,
    getBlocker,
    deleteBlocker,
    _internalFetchControllers: fetchControllers,
    _internalActiveDeferreds: activeDeferreds
  };
  return router;
} //#endregion
////////////////////////////////////////////////////////////////////////////////
//#region createStaticHandler
////////////////////////////////////////////////////////////////////////////////

const UNSAFE_DEFERRED_SYMBOL = Symbol("deferred");
function createStaticHandler(routes, opts) {
  invariant(routes.length > 0, "You must provide a non-empty routes array to createStaticHandler");
  let dataRoutes = convertRoutesToDataRoutes(routes);
  let basename = (opts ? opts.basename : null) || "/";
  /**
   * The query() method is intended for document requests, in which we want to
   * call an optional action and potentially multiple loaders for all nested
   * routes.  It returns a StaticHandlerContext object, which is very similar
   * to the router state (location, loaderData, actionData, errors, etc.) and
   * also adds SSR-specific information such as the statusCode and headers
   * from action/loaders Responses.
   *
   * It _should_ never throw and should report all errors through the
   * returned context.errors object, properly associating errors to their error
   * boundary.  Additionally, it tracks _deepestRenderedBoundaryId which can be
   * used to emulate React error boundaries during SSr by performing a second
   * pass only down to the boundaryId.
   *
   * The one exception where we do not return a StaticHandlerContext is when a
   * redirect response is returned or thrown from any action/loader.  We
   * propagate that out and return the raw Response so the HTTP server can
   * return it directly.
   */

  async function query(request, _temp2) {
    let {
      requestContext
    } = _temp2 === void 0 ? {} : _temp2;
    let url = new URL(request.url);
    let method = request.method.toLowerCase();
    let location = createLocation("", createPath(url), null, "default");
    let matches = matchRoutes(dataRoutes, location, basename); // SSR supports HEAD requests while SPA doesn't

    if (!isValidMethod(method) && method !== "head") {
      let error = getInternalRouterError(405, {
        method
      });
      let {
        matches: methodNotAllowedMatches,
        route
      } = getShortCircuitMatches(dataRoutes);
      return {
        basename,
        location,
        matches: methodNotAllowedMatches,
        loaderData: {},
        actionData: null,
        errors: {
          [route.id]: error
        },
        statusCode: error.status,
        loaderHeaders: {},
        actionHeaders: {},
        activeDeferreds: null
      };
    } else if (!matches) {
      let error = getInternalRouterError(404, {
        pathname: location.pathname
      });
      let {
        matches: notFoundMatches,
        route
      } = getShortCircuitMatches(dataRoutes);
      return {
        basename,
        location,
        matches: notFoundMatches,
        loaderData: {},
        actionData: null,
        errors: {
          [route.id]: error
        },
        statusCode: error.status,
        loaderHeaders: {},
        actionHeaders: {},
        activeDeferreds: null
      };
    }

    let result = await queryImpl(request, location, matches, requestContext);

    if (isResponse(result)) {
      return result;
    } // When returning StaticHandlerContext, we patch back in the location here
    // since we need it for React Context.  But this helps keep our submit and
    // loadRouteData operating on a Request instead of a Location


    return _extends({
      location,
      basename
    }, result);
  }
  /**
   * The queryRoute() method is intended for targeted route requests, either
   * for fetch ?_data requests or resource route requests.  In this case, we
   * are only ever calling a single action or loader, and we are returning the
   * returned value directly.  In most cases, this will be a Response returned
   * from the action/loader, but it may be a primitive or other value as well -
   * and in such cases the calling context should handle that accordingly.
   *
   * We do respect the throw/return differentiation, so if an action/loader
   * throws, then this method will throw the value.  This is important so we
   * can do proper boundary identification in Remix where a thrown Response
   * must go to the Catch Boundary but a returned Response is happy-path.
   *
   * One thing to note is that any Router-initiated Errors that make sense
   * to associate with a status code will be thrown as an ErrorResponse
   * instance which include the raw Error, such that the calling context can
   * serialize the error as they see fit while including the proper response
   * code.  Examples here are 404 and 405 errors that occur prior to reaching
   * any user-defined loaders.
   */


  async function queryRoute(request, _temp3) {
    let {
      routeId,
      requestContext
    } = _temp3 === void 0 ? {} : _temp3;
    let url = new URL(request.url);
    let method = request.method.toLowerCase();
    let location = createLocation("", createPath(url), null, "default");
    let matches = matchRoutes(dataRoutes, location, basename); // SSR supports HEAD requests while SPA doesn't

    if (!isValidMethod(method) && method !== "head" && method !== "options") {
      throw getInternalRouterError(405, {
        method
      });
    } else if (!matches) {
      throw getInternalRouterError(404, {
        pathname: location.pathname
      });
    }

    let match = routeId ? matches.find(m => m.route.id === routeId) : getTargetMatch(matches, location);

    if (routeId && !match) {
      throw getInternalRouterError(403, {
        pathname: location.pathname,
        routeId
      });
    } else if (!match) {
      // This should never hit I don't think?
      throw getInternalRouterError(404, {
        pathname: location.pathname
      });
    }

    let result = await queryImpl(request, location, matches, requestContext, match);

    if (isResponse(result)) {
      return result;
    }

    let error = result.errors ? Object.values(result.errors)[0] : undefined;

    if (error !== undefined) {
      // If we got back result.errors, that means the loader/action threw
      // _something_ that wasn't a Response, but it's not guaranteed/required
      // to be an `instanceof Error` either, so we have to use throw here to
      // preserve the "error" state outside of queryImpl.
      throw error;
    } // Pick off the right state value to return


    if (result.actionData) {
      return Object.values(result.actionData)[0];
    }

    if (result.loaderData) {
      var _result$activeDeferre;

      let data = Object.values(result.loaderData)[0];

      if ((_result$activeDeferre = result.activeDeferreds) != null && _result$activeDeferre[match.route.id]) {
        data[UNSAFE_DEFERRED_SYMBOL] = result.activeDeferreds[match.route.id];
      }

      return data;
    }

    return undefined;
  }

  async function queryImpl(request, location, matches, requestContext, routeMatch) {
    invariant(request.signal, "query()/queryRoute() requests must contain an AbortController signal");

    try {
      if (isMutationMethod(request.method.toLowerCase())) {
        let result = await submit(request, matches, routeMatch || getTargetMatch(matches, location), requestContext, routeMatch != null);
        return result;
      }

      let result = await loadRouteData(request, matches, requestContext, routeMatch);
      return isResponse(result) ? result : _extends({}, result, {
        actionData: null,
        actionHeaders: {}
      });
    } catch (e) {
      // If the user threw/returned a Response in callLoaderOrAction, we throw
      // it to bail out and then return or throw here based on whether the user
      // returned or threw
      if (isQueryRouteResponse(e)) {
        if (e.type === ResultType.error && !isRedirectResponse(e.response)) {
          throw e.response;
        }

        return e.response;
      } // Redirects are always returned since they don't propagate to catch
      // boundaries


      if (isRedirectResponse(e)) {
        return e;
      }

      throw e;
    }
  }

  async function submit(request, matches, actionMatch, requestContext, isRouteRequest) {
    let result;

    if (!actionMatch.route.action) {
      let error = getInternalRouterError(405, {
        method: request.method,
        pathname: new URL(request.url).pathname,
        routeId: actionMatch.route.id
      });

      if (isRouteRequest) {
        throw error;
      }

      result = {
        type: ResultType.error,
        error
      };
    } else {
      result = await callLoaderOrAction("action", request, actionMatch, matches, basename, true, isRouteRequest, requestContext);

      if (request.signal.aborted) {
        let method = isRouteRequest ? "queryRoute" : "query";
        throw new Error(method + "() call aborted");
      }
    }

    if (isRedirectResult(result)) {
      // Uhhhh - this should never happen, we should always throw these from
      // callLoaderOrAction, but the type narrowing here keeps TS happy and we
      // can get back on the "throw all redirect responses" train here should
      // this ever happen :/
      throw new Response(null, {
        status: result.status,
        headers: {
          Location: result.location
        }
      });
    }

    if (isDeferredResult(result)) {
      let error = getInternalRouterError(400, {
        type: "defer-action"
      });

      if (isRouteRequest) {
        throw error;
      }

      result = {
        type: ResultType.error,
        error
      };
    }

    if (isRouteRequest) {
      // Note: This should only be non-Response values if we get here, since
      // isRouteRequest should throw any Response received in callLoaderOrAction
      if (isErrorResult(result)) {
        throw result.error;
      }

      return {
        matches: [actionMatch],
        loaderData: {},
        actionData: {
          [actionMatch.route.id]: result.data
        },
        errors: null,
        // Note: statusCode + headers are unused here since queryRoute will
        // return the raw Response or value
        statusCode: 200,
        loaderHeaders: {},
        actionHeaders: {},
        activeDeferreds: null
      };
    }

    if (isErrorResult(result)) {
      // Store off the pending error - we use it to determine which loaders
      // to call and will commit it when we complete the navigation
      let boundaryMatch = findNearestBoundary(matches, actionMatch.route.id);
      let context = await loadRouteData(request, matches, requestContext, undefined, {
        [boundaryMatch.route.id]: result.error
      }); // action status codes take precedence over loader status codes

      return _extends({}, context, {
        statusCode: isRouteErrorResponse(result.error) ? result.error.status : 500,
        actionData: null,
        actionHeaders: _extends({}, result.headers ? {
          [actionMatch.route.id]: result.headers
        } : {})
      });
    } // Create a GET request for the loaders


    let loaderRequest = new Request(request.url, {
      headers: request.headers,
      redirect: request.redirect,
      signal: request.signal
    });
    let context = await loadRouteData(loaderRequest, matches, requestContext);
    return _extends({}, context, result.statusCode ? {
      statusCode: result.statusCode
    } : {}, {
      actionData: {
        [actionMatch.route.id]: result.data
      },
      actionHeaders: _extends({}, result.headers ? {
        [actionMatch.route.id]: result.headers
      } : {})
    });
  }

  async function loadRouteData(request, matches, requestContext, routeMatch, pendingActionError) {
    let isRouteRequest = routeMatch != null; // Short circuit if we have no loaders to run (queryRoute())

    if (isRouteRequest && !(routeMatch != null && routeMatch.route.loader)) {
      throw getInternalRouterError(400, {
        method: request.method,
        pathname: new URL(request.url).pathname,
        routeId: routeMatch == null ? void 0 : routeMatch.route.id
      });
    }

    let requestMatches = routeMatch ? [routeMatch] : getLoaderMatchesUntilBoundary(matches, Object.keys(pendingActionError || {})[0]);
    let matchesToLoad = requestMatches.filter(m => m.route.loader); // Short circuit if we have no loaders to run (query())

    if (matchesToLoad.length === 0) {
      return {
        matches,
        // Add a null for all matched routes for proper revalidation on the client
        loaderData: matches.reduce((acc, m) => Object.assign(acc, {
          [m.route.id]: null
        }), {}),
        errors: pendingActionError || null,
        statusCode: 200,
        loaderHeaders: {},
        activeDeferreds: null
      };
    }

    let results = await Promise.all([...matchesToLoad.map(match => callLoaderOrAction("loader", request, match, matches, basename, true, isRouteRequest, requestContext))]);

    if (request.signal.aborted) {
      let method = isRouteRequest ? "queryRoute" : "query";
      throw new Error(method + "() call aborted");
    } // Process and commit output from loaders


    let activeDeferreds = new Map();
    let context = processRouteLoaderData(matches, matchesToLoad, results, pendingActionError, activeDeferreds); // Add a null for any non-loader matches for proper revalidation on the client

    let executedLoaders = new Set(matchesToLoad.map(match => match.route.id));
    matches.forEach(match => {
      if (!executedLoaders.has(match.route.id)) {
        context.loaderData[match.route.id] = null;
      }
    });
    return _extends({}, context, {
      matches,
      activeDeferreds: activeDeferreds.size > 0 ? Object.fromEntries(activeDeferreds.entries()) : null
    });
  }

  return {
    dataRoutes,
    query,
    queryRoute
  };
} //#endregion
////////////////////////////////////////////////////////////////////////////////
//#region Helpers
////////////////////////////////////////////////////////////////////////////////

/**
 * Given an existing StaticHandlerContext and an error thrown at render time,
 * provide an updated StaticHandlerContext suitable for a second SSR render
 */

function getStaticContextFromError(routes, context, error) {
  let newContext = _extends({}, context, {
    statusCode: 500,
    errors: {
      [context._deepestRenderedBoundaryId || routes[0].id]: error
    }
  });

  return newContext;
}

function isSubmissionNavigation(opts) {
  return opts != null && "formData" in opts;
} // Normalize navigation options by converting formMethod=GET formData objects to
// URLSearchParams so they behave identically to links with query params


function normalizeNavigateOptions(to, opts, isFetcher) {
  if (isFetcher === void 0) {
    isFetcher = false;
  }

  let path = typeof to === "string" ? to : createPath(to); // Return location verbatim on non-submission navigations

  if (!opts || !isSubmissionNavigation(opts)) {
    return {
      path
    };
  }

  if (opts.formMethod && !isValidMethod(opts.formMethod)) {
    return {
      path,
      error: getInternalRouterError(405, {
        method: opts.formMethod
      })
    };
  } // Create a Submission on non-GET navigations


  let submission;

  if (opts.formData) {
    submission = {
      formMethod: opts.formMethod || "get",
      formAction: stripHashFromPath(path),
      formEncType: opts && opts.formEncType || "application/x-www-form-urlencoded",
      formData: opts.formData
    };

    if (isMutationMethod(submission.formMethod)) {
      return {
        path,
        submission
      };
    }
  } // Flatten submission onto URLSearchParams for GET submissions


  let parsedPath = parsePath(path);
  let searchParams = convertFormDataToSearchParams(opts.formData); // Since fetcher GET submissions only run a single loader (as opposed to
  // navigation GET submissions which run all loaders), we need to preserve
  // any incoming ?index params

  if (isFetcher && parsedPath.search && hasNakedIndexQuery(parsedPath.search)) {
    searchParams.append("index", "");
  }

  parsedPath.search = "?" + searchParams;
  return {
    path: createPath(parsedPath),
    submission
  };
} // Filter out all routes below any caught error as they aren't going to
// render so we don't need to load them


function getLoaderMatchesUntilBoundary(matches, boundaryId) {
  let boundaryMatches = matches;

  if (boundaryId) {
    let index = matches.findIndex(m => m.route.id === boundaryId);

    if (index >= 0) {
      boundaryMatches = matches.slice(0, index);
    }
  }

  return boundaryMatches;
}

function getMatchesToLoad(history, state, matches, submission, location, isRevalidationRequired, cancelledDeferredRoutes, cancelledFetcherLoads, pendingActionData, pendingError, fetchLoadMatches) {
  let actionResult = pendingError ? Object.values(pendingError)[0] : pendingActionData ? Object.values(pendingActionData)[0] : undefined;
  let currentUrl = history.createURL(state.location);
  let nextUrl = history.createURL(location);
  let defaultShouldRevalidate = // Forced revalidation due to submission, useRevalidate, or X-Remix-Revalidate
  isRevalidationRequired || // Clicked the same link, resubmitted a GET form
  currentUrl.toString() === nextUrl.toString() || // Search params affect all loaders
  currentUrl.search !== nextUrl.search; // Pick navigation matches that are net-new or qualify for revalidation

  let boundaryId = pendingError ? Object.keys(pendingError)[0] : undefined;
  let boundaryMatches = getLoaderMatchesUntilBoundary(matches, boundaryId);
  let navigationMatches = boundaryMatches.filter((match, index) => {
    if (match.route.loader == null) {
      return false;
    } // Always call the loader on new route instances and pending defer cancellations


    if (isNewLoader(state.loaderData, state.matches[index], match) || cancelledDeferredRoutes.some(id => id === match.route.id)) {
      return true;
    } // This is the default implementation for when we revalidate.  If the route
    // provides it's own implementation, then we give them full control but
    // provide this value so they can leverage it if needed after they check
    // their own specific use cases


    let currentRouteMatch = state.matches[index];
    let nextRouteMatch = match;
    return shouldRevalidateLoader(match, _extends({
      currentUrl,
      currentParams: currentRouteMatch.params,
      nextUrl,
      nextParams: nextRouteMatch.params
    }, submission, {
      actionResult,
      defaultShouldRevalidate: defaultShouldRevalidate || isNewRouteInstance(currentRouteMatch, nextRouteMatch)
    }));
  }); // Pick fetcher.loads that need to be revalidated

  let revalidatingFetchers = [];
  fetchLoadMatches && fetchLoadMatches.forEach((f, key) => {
    if (!matches.some(m => m.route.id === f.routeId)) {
      // This fetcher is not going to be present in the subsequent render so
      // there's no need to revalidate it
      return;
    } else if (cancelledFetcherLoads.includes(key)) {
      // This fetcher was cancelled from a prior action submission - force reload
      revalidatingFetchers.push(_extends({
        key
      }, f));
    } else {
      // Revalidating fetchers are decoupled from the route matches since they
      // hit a static href, so they _always_ check shouldRevalidate and the
      // default is strictly if a revalidation is explicitly required (action
      // submissions, useRevalidator, X-Remix-Revalidate).
      let shouldRevalidate = shouldRevalidateLoader(f.match, _extends({
        currentUrl,
        currentParams: state.matches[state.matches.length - 1].params,
        nextUrl,
        nextParams: matches[matches.length - 1].params
      }, submission, {
        actionResult,
        defaultShouldRevalidate
      }));

      if (shouldRevalidate) {
        revalidatingFetchers.push(_extends({
          key
        }, f));
      }
    }
  });
  return [navigationMatches, revalidatingFetchers];
}

function isNewLoader(currentLoaderData, currentMatch, match) {
  let isNew = // [a] -> [a, b]
  !currentMatch || // [a, b] -> [a, c]
  match.route.id !== currentMatch.route.id; // Handle the case that we don't have data for a re-used route, potentially
  // from a prior error or from a cancelled pending deferred

  let isMissingData = currentLoaderData[match.route.id] === undefined; // Always load if this is a net-new route or we don't yet have data

  return isNew || isMissingData;
}

function isNewRouteInstance(currentMatch, match) {
  let currentPath = currentMatch.route.path;
  return (// param change for this match, /users/123 -> /users/456
    currentMatch.pathname !== match.pathname || // splat param changed, which is not present in match.path
    // e.g. /files/images/avatar.jpg -> files/finances.xls
    currentPath != null && currentPath.endsWith("*") && currentMatch.params["*"] !== match.params["*"]
  );
}

function shouldRevalidateLoader(loaderMatch, arg) {
  if (loaderMatch.route.shouldRevalidate) {
    let routeChoice = loaderMatch.route.shouldRevalidate(arg);

    if (typeof routeChoice === "boolean") {
      return routeChoice;
    }
  }

  return arg.defaultShouldRevalidate;
}

async function callLoaderOrAction(type, request, match, matches, basename, isStaticRequest, isRouteRequest, requestContext) {
  if (basename === void 0) {
    basename = "/";
  }

  if (isStaticRequest === void 0) {
    isStaticRequest = false;
  }

  if (isRouteRequest === void 0) {
    isRouteRequest = false;
  }

  let resultType;
  let result; // Setup a promise we can race against so that abort signals short circuit

  let reject;
  let abortPromise = new Promise((_, r) => reject = r);

  let onReject = () => reject();

  request.signal.addEventListener("abort", onReject);

  try {
    let handler = match.route[type];
    invariant(handler, "Could not find the " + type + " to run on the \"" + match.route.id + "\" route");
    result = await Promise.race([handler({
      request,
      params: match.params,
      context: requestContext
    }), abortPromise]);
    invariant(result !== undefined, "You defined " + (type === "action" ? "an action" : "a loader") + " for route " + ("\"" + match.route.id + "\" but didn't return anything from your `" + type + "` ") + "function. Please return a value or `null`.");
  } catch (e) {
    resultType = ResultType.error;
    result = e;
  } finally {
    request.signal.removeEventListener("abort", onReject);
  }

  if (isResponse(result)) {
    let status = result.status; // Process redirects

    if (redirectStatusCodes.has(status)) {
      let location = result.headers.get("Location");
      invariant(location, "Redirects returned/thrown from loaders/actions must have a Location header"); // Support relative routing in internal redirects

      if (!ABSOLUTE_URL_REGEX.test(location)) {
        let activeMatches = matches.slice(0, matches.indexOf(match) + 1);
        let routePathnames = getPathContributingMatches(activeMatches).map(match => match.pathnameBase);
        let resolvedLocation = resolveTo(location, routePathnames, new URL(request.url).pathname);
        invariant(createPath(resolvedLocation), "Unable to resolve redirect location: " + location); // Prepend the basename to the redirect location if we have one

        if (basename) {
          let path = resolvedLocation.pathname;
          resolvedLocation.pathname = path === "/" ? basename : joinPaths([basename, path]);
        }

        location = createPath(resolvedLocation);
      } else if (!isStaticRequest) {
        // Strip off the protocol+origin for same-origin absolute redirects.
        // If this is a static reques, we can let it go back to the browser
        // as-is
        let currentUrl = new URL(request.url);
        let url = location.startsWith("//") ? new URL(currentUrl.protocol + location) : new URL(location);

        if (url.origin === currentUrl.origin) {
          location = url.pathname + url.search + url.hash;
        }
      } // Don't process redirects in the router during static requests requests.
      // Instead, throw the Response and let the server handle it with an HTTP
      // redirect.  We also update the Location header in place in this flow so
      // basename and relative routing is taken into account


      if (isStaticRequest) {
        result.headers.set("Location", location);
        throw result;
      }

      return {
        type: ResultType.redirect,
        status,
        location,
        revalidate: result.headers.get("X-Remix-Revalidate") !== null
      };
    } // For SSR single-route requests, we want to hand Responses back directly
    // without unwrapping.  We do this with the QueryRouteResponse wrapper
    // interface so we can know whether it was returned or thrown


    if (isRouteRequest) {
      // eslint-disable-next-line no-throw-literal
      throw {
        type: resultType || ResultType.data,
        response: result
      };
    }

    let data;
    let contentType = result.headers.get("Content-Type"); // Check between word boundaries instead of startsWith() due to the last
    // paragraph of https://httpwg.org/specs/rfc9110.html#field.content-type

    if (contentType && /\bapplication\/json\b/.test(contentType)) {
      data = await result.json();
    } else {
      data = await result.text();
    }

    if (resultType === ResultType.error) {
      return {
        type: resultType,
        error: new ErrorResponse(status, result.statusText, data),
        headers: result.headers
      };
    }

    return {
      type: ResultType.data,
      data,
      statusCode: result.status,
      headers: result.headers
    };
  }

  if (resultType === ResultType.error) {
    return {
      type: resultType,
      error: result
    };
  }

  if (result instanceof DeferredData) {
    return {
      type: ResultType.deferred,
      deferredData: result
    };
  }

  return {
    type: ResultType.data,
    data: result
  };
} // Utility method for creating the Request instances for loaders/actions during
// client-side navigations and fetches.  During SSR we will always have a
// Request instance from the static handler (query/queryRoute)


function createClientSideRequest(history, location, signal, submission) {
  let url = history.createURL(stripHashFromPath(location)).toString();
  let init = {
    signal
  };

  if (submission && isMutationMethod(submission.formMethod)) {
    let {
      formMethod,
      formEncType,
      formData
    } = submission;
    init.method = formMethod.toUpperCase();
    init.body = formEncType === "application/x-www-form-urlencoded" ? convertFormDataToSearchParams(formData) : formData;
  } // Content-Type is inferred (https://fetch.spec.whatwg.org/#dom-request)


  return new Request(url, init);
}

function convertFormDataToSearchParams(formData) {
  let searchParams = new URLSearchParams();

  for (let [key, value] of formData.entries()) {
    // https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#converting-an-entry-list-to-a-list-of-name-value-pairs
    searchParams.append(key, value instanceof File ? value.name : value);
  }

  return searchParams;
}

function processRouteLoaderData(matches, matchesToLoad, results, pendingError, activeDeferreds) {
  // Fill in loaderData/errors from our loaders
  let loaderData = {};
  let errors = null;
  let statusCode;
  let foundError = false;
  let loaderHeaders = {}; // Process loader results into state.loaderData/state.errors

  results.forEach((result, index) => {
    let id = matchesToLoad[index].route.id;
    invariant(!isRedirectResult(result), "Cannot handle redirect results in processLoaderData");

    if (isErrorResult(result)) {
      // Look upwards from the matched route for the closest ancestor
      // error boundary, defaulting to the root match
      let boundaryMatch = findNearestBoundary(matches, id);
      let error = result.error; // If we have a pending action error, we report it at the highest-route
      // that throws a loader error, and then clear it out to indicate that
      // it was consumed

      if (pendingError) {
        error = Object.values(pendingError)[0];
        pendingError = undefined;
      }

      errors = errors || {}; // Prefer higher error values if lower errors bubble to the same boundary

      if (errors[boundaryMatch.route.id] == null) {
        errors[boundaryMatch.route.id] = error;
      } // Clear our any prior loaderData for the throwing route


      loaderData[id] = undefined; // Once we find our first (highest) error, we set the status code and
      // prevent deeper status codes from overriding

      if (!foundError) {
        foundError = true;
        statusCode = isRouteErrorResponse(result.error) ? result.error.status : 500;
      }

      if (result.headers) {
        loaderHeaders[id] = result.headers;
      }
    } else {
      if (isDeferredResult(result)) {
        activeDeferreds.set(id, result.deferredData);
        loaderData[id] = result.deferredData.data;
      } else {
        loaderData[id] = result.data;
      } // Error status codes always override success status codes, but if all
      // loaders are successful we take the deepest status code.


      if (result.statusCode != null && result.statusCode !== 200 && !foundError) {
        statusCode = result.statusCode;
      }

      if (result.headers) {
        loaderHeaders[id] = result.headers;
      }
    }
  }); // If we didn't consume the pending action error (i.e., all loaders
  // resolved), then consume it here.  Also clear out any loaderData for the
  // throwing route

  if (pendingError) {
    errors = pendingError;
    loaderData[Object.keys(pendingError)[0]] = undefined;
  }

  return {
    loaderData,
    errors,
    statusCode: statusCode || 200,
    loaderHeaders
  };
}

function processLoaderData(state, matches, matchesToLoad, results, pendingError, revalidatingFetchers, fetcherResults, activeDeferreds) {
  let {
    loaderData,
    errors
  } = processRouteLoaderData(matches, matchesToLoad, results, pendingError, activeDeferreds); // Process results from our revalidating fetchers

  for (let index = 0; index < revalidatingFetchers.length; index++) {
    let {
      key,
      match
    } = revalidatingFetchers[index];
    invariant(fetcherResults !== undefined && fetcherResults[index] !== undefined, "Did not find corresponding fetcher result");
    let result = fetcherResults[index]; // Process fetcher non-redirect errors

    if (isErrorResult(result)) {
      let boundaryMatch = findNearestBoundary(state.matches, match.route.id);

      if (!(errors && errors[boundaryMatch.route.id])) {
        errors = _extends({}, errors, {
          [boundaryMatch.route.id]: result.error
        });
      }

      state.fetchers.delete(key);
    } else if (isRedirectResult(result)) {
      // Should never get here, redirects should get processed above, but we
      // keep this to type narrow to a success result in the else
      invariant(false, "Unhandled fetcher revalidation redirect");
    } else if (isDeferredResult(result)) {
      // Should never get here, deferred data should be awaited for fetchers
      // in resolveDeferredResults
      invariant(false, "Unhandled fetcher deferred data");
    } else {
      let doneFetcher = {
        state: "idle",
        data: result.data,
        formMethod: undefined,
        formAction: undefined,
        formEncType: undefined,
        formData: undefined,
        " _hasFetcherDoneAnything ": true
      };
      state.fetchers.set(key, doneFetcher);
    }
  }

  return {
    loaderData,
    errors
  };
}

function mergeLoaderData(loaderData, newLoaderData, matches, errors) {
  let mergedLoaderData = _extends({}, newLoaderData);

  for (let match of matches) {
    let id = match.route.id;

    if (newLoaderData.hasOwnProperty(id)) {
      if (newLoaderData[id] !== undefined) {
        mergedLoaderData[id] = newLoaderData[id];
      }
    } else if (loaderData[id] !== undefined) {
      mergedLoaderData[id] = loaderData[id];
    }

    if (errors && errors.hasOwnProperty(id)) {
      // Don't keep any loader data below the boundary
      break;
    }
  }

  return mergedLoaderData;
} // Find the nearest error boundary, looking upwards from the leaf route (or the
// route specified by routeId) for the closest ancestor error boundary,
// defaulting to the root match


function findNearestBoundary(matches, routeId) {
  let eligibleMatches = routeId ? matches.slice(0, matches.findIndex(m => m.route.id === routeId) + 1) : [...matches];
  return eligibleMatches.reverse().find(m => m.route.hasErrorBoundary === true) || matches[0];
}

function getShortCircuitMatches(routes) {
  // Prefer a root layout route if present, otherwise shim in a route object
  let route = routes.find(r => r.index || !r.path || r.path === "/") || {
    id: "__shim-error-route__"
  };
  return {
    matches: [{
      params: {},
      pathname: "",
      pathnameBase: "",
      route
    }],
    route
  };
}

function getInternalRouterError(status, _temp4) {
  let {
    pathname,
    routeId,
    method,
    type
  } = _temp4 === void 0 ? {} : _temp4;
  let statusText = "Unknown Server Error";
  let errorMessage = "Unknown @remix-run/router error";

  if (status === 400) {
    statusText = "Bad Request";

    if (method && pathname && routeId) {
      errorMessage = "You made a " + method + " request to \"" + pathname + "\" but " + ("did not provide a `loader` for route \"" + routeId + "\", ") + "so there is no way to handle the request.";
    } else if (type === "defer-action") {
      errorMessage = "defer() is not supported in actions";
    }
  } else if (status === 403) {
    statusText = "Forbidden";
    errorMessage = "Route \"" + routeId + "\" does not match URL \"" + pathname + "\"";
  } else if (status === 404) {
    statusText = "Not Found";
    errorMessage = "No route matches URL \"" + pathname + "\"";
  } else if (status === 405) {
    statusText = "Method Not Allowed";

    if (method && pathname && routeId) {
      errorMessage = "You made a " + method.toUpperCase() + " request to \"" + pathname + "\" but " + ("did not provide an `action` for route \"" + routeId + "\", ") + "so there is no way to handle the request.";
    } else if (method) {
      errorMessage = "Invalid request method \"" + method.toUpperCase() + "\"";
    }
  }

  return new ErrorResponse(status || 500, statusText, new Error(errorMessage), true);
} // Find any returned redirect errors, starting from the lowest match


function findRedirect(results) {
  for (let i = results.length - 1; i >= 0; i--) {
    let result = results[i];

    if (isRedirectResult(result)) {
      return result;
    }
  }
}

function stripHashFromPath(path) {
  let parsedPath = typeof path === "string" ? parsePath(path) : path;
  return createPath(_extends({}, parsedPath, {
    hash: ""
  }));
}

function isHashChangeOnly(a, b) {
  return a.pathname === b.pathname && a.search === b.search && a.hash !== b.hash;
}

function isDeferredResult(result) {
  return result.type === ResultType.deferred;
}

function isErrorResult(result) {
  return result.type === ResultType.error;
}

function isRedirectResult(result) {
  return (result && result.type) === ResultType.redirect;
}

function isResponse(value) {
  return value != null && typeof value.status === "number" && typeof value.statusText === "string" && typeof value.headers === "object" && typeof value.body !== "undefined";
}

function isRedirectResponse(result) {
  if (!isResponse(result)) {
    return false;
  }

  let status = result.status;
  let location = result.headers.get("Location");
  return status >= 300 && status <= 399 && location != null;
}

function isQueryRouteResponse(obj) {
  return obj && isResponse(obj.response) && (obj.type === ResultType.data || ResultType.error);
}

function isValidMethod(method) {
  return validRequestMethods.has(method);
}

function isMutationMethod(method) {
  return validMutationMethods.has(method);
}

async function resolveDeferredResults(currentMatches, matchesToLoad, results, signal, isFetcher, currentLoaderData) {
  for (let index = 0; index < results.length; index++) {
    let result = results[index];
    let match = matchesToLoad[index];
    let currentMatch = currentMatches.find(m => m.route.id === match.route.id);
    let isRevalidatingLoader = currentMatch != null && !isNewRouteInstance(currentMatch, match) && (currentLoaderData && currentLoaderData[match.route.id]) !== undefined;

    if (isDeferredResult(result) && (isFetcher || isRevalidatingLoader)) {
      // Note: we do not have to touch activeDeferreds here since we race them
      // against the signal in resolveDeferredData and they'll get aborted
      // there if needed
      await resolveDeferredData(result, signal, isFetcher).then(result => {
        if (result) {
          results[index] = result || results[index];
        }
      });
    }
  }
}

async function resolveDeferredData(result, signal, unwrap) {
  if (unwrap === void 0) {
    unwrap = false;
  }

  let aborted = await result.deferredData.resolveData(signal);

  if (aborted) {
    return;
  }

  if (unwrap) {
    try {
      return {
        type: ResultType.data,
        data: result.deferredData.unwrappedData
      };
    } catch (e) {
      // Handle any TrackedPromise._error values encountered while unwrapping
      return {
        type: ResultType.error,
        error: e
      };
    }
  }

  return {
    type: ResultType.data,
    data: result.deferredData.data
  };
}

function hasNakedIndexQuery(search) {
  return new URLSearchParams(search).getAll("index").some(v => v === "");
} // Note: This should match the format exported by useMatches, so if you change
// this please also change that :)  Eventually we'll DRY this up


function createUseMatchesMatch(match, loaderData) {
  let {
    route,
    pathname,
    params
  } = match;
  return {
    id: route.id,
    pathname,
    params,
    data: loaderData[route.id],
    handle: route.handle
  };
}

function getTargetMatch(matches, location) {
  let search = typeof location === "string" ? parsePath(location).search : location.search;

  if (matches[matches.length - 1].route.index && hasNakedIndexQuery(search || "")) {
    // Return the leaf index route when index is present
    return matches[matches.length - 1];
  } // Otherwise grab the deepest "path contributing" match (ignoring index and
  // pathless layout routes)


  let pathMatches = getPathContributingMatches(matches);
  return pathMatches[pathMatches.length - 1];
} //#endregion

exports.AbortedDeferredError = AbortedDeferredError;
exports.ErrorResponse = ErrorResponse;
exports.IDLE_BLOCKER = IDLE_BLOCKER;
exports.IDLE_FETCHER = IDLE_FETCHER;
exports.IDLE_NAVIGATION = IDLE_NAVIGATION;
exports.UNSAFE_DEFERRED_SYMBOL = UNSAFE_DEFERRED_SYMBOL;
exports.UNSAFE_DeferredData = DeferredData;
exports.UNSAFE_convertRoutesToDataRoutes = convertRoutesToDataRoutes;
exports.UNSAFE_getPathContributingMatches = getPathContributingMatches;
exports.createBrowserHistory = createBrowserHistory;
exports.createHashHistory = createHashHistory;
exports.createMemoryHistory = createMemoryHistory;
exports.createPath = createPath;
exports.createRouter = createRouter;
exports.createStaticHandler = createStaticHandler;
exports.defer = defer;
exports.generatePath = generatePath;
exports.getStaticContextFromError = getStaticContextFromError;
exports.getToPathname = getToPathname;
exports.invariant = invariant;
exports.isRouteErrorResponse = isRouteErrorResponse;
exports.joinPaths = joinPaths;
exports.json = json;
exports.matchPath = matchPath;
exports.matchRoutes = matchRoutes;
exports.normalizePathname = normalizePathname;
exports.parsePath = parsePath;
exports.redirect = redirect;
exports.resolvePath = resolvePath;
exports.resolveTo = resolveTo;
exports.stripBasename = stripBasename;
exports.warning = warning;
//# sourceMappingURL=router.cjs.js.map