mirror of https://github.com/webpack/webpack.git
378 lines
9.2 KiB
JavaScript
378 lines
9.2 KiB
JavaScript
/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Tobias Koppers @sokra
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*/
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"use strict";
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var $interceptModuleExecution$ = undefined;
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var $moduleCache$ = undefined;
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// eslint-disable-next-line no-unused-vars
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var $hmrModuleData$ = undefined;
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var $hmrDownloadManifest$ = undefined;
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var $hmrDownloadUpdateHandlers$ = undefined;
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var $hmrInvalidateModuleHandlers$ = undefined;
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var __webpack_require__ = undefined;
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module.exports = function () {
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var currentModuleData = {};
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var installedModules = $moduleCache$;
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// module and require creation
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var currentChildModule;
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var currentParents = [];
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// status
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var registeredStatusHandlers = [];
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var currentStatus = "idle";
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// while downloading
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var blockingPromises;
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// The update info
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var currentUpdateApplyHandlers;
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var queuedInvalidatedModules;
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// eslint-disable-next-line no-unused-vars
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$hmrModuleData$ = currentModuleData;
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$interceptModuleExecution$.push(function (options) {
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var module = options.module;
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var require = createRequire(options.require, options.id);
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module.hot = createModuleHotObject(options.id, module);
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module.parents = currentParents;
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module.children = [];
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currentParents = [];
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options.require = require;
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});
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$hmrDownloadUpdateHandlers$ = {};
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$hmrInvalidateModuleHandlers$ = {};
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function createRequire(require, moduleId) {
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var me = installedModules[moduleId];
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if (!me) return require;
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var fn = function (request) {
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if (me.hot.active) {
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if (installedModules[request]) {
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var parents = installedModules[request].parents;
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if (parents.indexOf(moduleId) === -1) {
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parents.push(moduleId);
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}
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} else {
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currentParents = [moduleId];
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currentChildModule = request;
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}
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if (me.children.indexOf(request) === -1) {
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me.children.push(request);
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}
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} else {
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console.warn(
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"[HMR] unexpected require(" +
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request +
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") from disposed module " +
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moduleId
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);
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currentParents = [];
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}
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return require(request);
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};
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var createPropertyDescriptor = function (name) {
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return {
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configurable: true,
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enumerable: true,
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get: function () {
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return require[name];
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},
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set: function (value) {
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require[name] = value;
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}
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};
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};
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for (var name in require) {
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if (Object.prototype.hasOwnProperty.call(require, name) && name !== "e") {
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Object.defineProperty(fn, name, createPropertyDescriptor(name));
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}
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}
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fn.e = function (chunkId) {
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return trackBlockingPromise(require.e(chunkId));
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};
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return fn;
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}
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function createModuleHotObject(moduleId, me) {
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var hot = {
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// private stuff
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_acceptedDependencies: {},
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_declinedDependencies: {},
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_selfAccepted: false,
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_selfDeclined: false,
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_selfInvalidated: false,
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_disposeHandlers: [],
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_main: currentChildModule !== moduleId,
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_requireSelf: function () {
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currentParents = me.parents.slice();
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currentChildModule = moduleId;
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__webpack_require__(moduleId);
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},
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// Module API
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active: true,
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accept: function (dep, callback) {
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if (dep === undefined) hot._selfAccepted = true;
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else if (typeof dep === "function") hot._selfAccepted = dep;
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else if (typeof dep === "object" && dep !== null)
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for (var i = 0; i < dep.length; i++)
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hot._acceptedDependencies[dep[i]] = callback || function () {};
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else hot._acceptedDependencies[dep] = callback || function () {};
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},
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decline: function (dep) {
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if (dep === undefined) hot._selfDeclined = true;
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else if (typeof dep === "object" && dep !== null)
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for (var i = 0; i < dep.length; i++)
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hot._declinedDependencies[dep[i]] = true;
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else hot._declinedDependencies[dep] = true;
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},
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dispose: function (callback) {
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hot._disposeHandlers.push(callback);
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},
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addDisposeHandler: function (callback) {
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hot._disposeHandlers.push(callback);
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},
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removeDisposeHandler: function (callback) {
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var idx = hot._disposeHandlers.indexOf(callback);
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if (idx >= 0) hot._disposeHandlers.splice(idx, 1);
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},
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invalidate: function () {
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this._selfInvalidated = true;
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switch (currentStatus) {
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case "idle":
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currentUpdateApplyHandlers = [];
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Object.keys($hmrInvalidateModuleHandlers$).forEach(function (key) {
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$hmrInvalidateModuleHandlers$[key](
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moduleId,
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currentUpdateApplyHandlers
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);
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});
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setStatus("ready");
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break;
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case "ready":
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Object.keys($hmrInvalidateModuleHandlers$).forEach(function (key) {
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$hmrInvalidateModuleHandlers$[key](
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moduleId,
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currentUpdateApplyHandlers
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);
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});
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break;
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case "prepare":
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case "check":
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case "dispose":
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case "apply":
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(queuedInvalidatedModules = queuedInvalidatedModules || []).push(
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moduleId
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);
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break;
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default:
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// ignore requests in error states
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break;
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}
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},
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// Management API
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check: hotCheck,
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apply: hotApply,
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status: function (l) {
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if (!l) return currentStatus;
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registeredStatusHandlers.push(l);
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},
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addStatusHandler: function (l) {
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registeredStatusHandlers.push(l);
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},
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removeStatusHandler: function (l) {
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var idx = registeredStatusHandlers.indexOf(l);
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if (idx >= 0) registeredStatusHandlers.splice(idx, 1);
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},
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//inherit from previous dispose call
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data: currentModuleData[moduleId]
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};
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currentChildModule = undefined;
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return hot;
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}
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function setStatus(newStatus) {
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currentStatus = newStatus;
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for (var i = 0; i < registeredStatusHandlers.length; i++)
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registeredStatusHandlers[i].call(null, newStatus);
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}
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function trackBlockingPromise(promise) {
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switch (currentStatus) {
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case "ready":
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setStatus("prepare");
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blockingPromises.push(promise);
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waitForBlockingPromises(function () {
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setStatus("ready");
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});
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return promise;
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case "prepare":
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blockingPromises.push(promise);
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return promise;
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default:
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return promise;
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}
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}
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function waitForBlockingPromises(fn) {
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if (blockingPromises.length === 0) return fn();
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var blocker = blockingPromises;
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blockingPromises = [];
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return Promise.all(blocker).then(function () {
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return waitForBlockingPromises(fn);
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});
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}
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function hotCheck(applyOnUpdate) {
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if (currentStatus !== "idle") {
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throw new Error("check() is only allowed in idle status");
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}
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setStatus("check");
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return $hmrDownloadManifest$().then(function (update) {
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if (!update) {
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setStatus(applyInvalidatedModules() ? "ready" : "idle");
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return null;
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}
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setStatus("prepare");
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var updatedModules = [];
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blockingPromises = [];
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currentUpdateApplyHandlers = [];
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return Promise.all(
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Object.keys($hmrDownloadUpdateHandlers$).reduce(function (
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promises,
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key
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) {
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$hmrDownloadUpdateHandlers$[key](
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update.c,
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update.r,
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update.m,
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promises,
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currentUpdateApplyHandlers,
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updatedModules
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);
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return promises;
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},
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[])
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).then(function () {
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return waitForBlockingPromises(function () {
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if (applyOnUpdate) {
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return internalApply(applyOnUpdate);
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} else {
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setStatus("ready");
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return updatedModules;
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}
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});
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});
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});
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}
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function hotApply(options) {
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if (currentStatus !== "ready") {
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return Promise.resolve().then(function () {
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throw new Error("apply() is only allowed in ready status");
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});
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}
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return internalApply(options);
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}
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function internalApply(options) {
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options = options || {};
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applyInvalidatedModules();
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var results = currentUpdateApplyHandlers.map(function (handler) {
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return handler(options);
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});
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currentUpdateApplyHandlers = undefined;
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var errors = results
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.map(function (r) {
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return r.error;
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})
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.filter(Boolean);
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if (errors.length > 0) {
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setStatus("abort");
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return Promise.resolve().then(function () {
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throw errors[0];
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});
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}
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// Now in "dispose" phase
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setStatus("dispose");
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results.forEach(function (result) {
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if (result.dispose) result.dispose();
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});
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// Now in "apply" phase
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setStatus("apply");
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var error;
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var reportError = function (err) {
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if (!error) error = err;
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};
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var outdatedModules = [];
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results.forEach(function (result) {
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if (result.apply) {
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var modules = result.apply(reportError);
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if (modules) {
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for (var i = 0; i < modules.length; i++) {
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outdatedModules.push(modules[i]);
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}
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}
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}
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});
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// handle errors in accept handlers and self accepted module load
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if (error) {
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setStatus("fail");
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return Promise.resolve().then(function () {
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throw error;
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});
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}
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if (queuedInvalidatedModules) {
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return internalApply(options).then(function (list) {
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outdatedModules.forEach(function (moduleId) {
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if (list.indexOf(moduleId) < 0) list.push(moduleId);
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});
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return list;
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});
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}
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setStatus("idle");
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return Promise.resolve(outdatedModules);
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}
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function applyInvalidatedModules() {
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if (queuedInvalidatedModules) {
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if (!currentUpdateApplyHandlers) currentUpdateApplyHandlers = [];
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Object.keys($hmrInvalidateModuleHandlers$).forEach(function (key) {
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queuedInvalidatedModules.forEach(function (moduleId) {
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$hmrInvalidateModuleHandlers$[key](
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moduleId,
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currentUpdateApplyHandlers
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);
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});
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});
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queuedInvalidatedModules = undefined;
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return true;
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}
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}
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};
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