mirror of https://github.com/webpack/webpack.git
853 lines
24 KiB
JavaScript
853 lines
24 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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const asyncLib = require("neo-async");
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const {
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AsyncSeriesBailHook,
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SyncWaterfallHook,
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SyncBailHook,
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SyncHook,
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HookMap
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} = require("tapable");
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const Module = require("./Module");
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const ModuleFactory = require("./ModuleFactory");
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const NormalModule = require("./NormalModule");
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const RawModule = require("./RawModule");
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const BasicEffectRulePlugin = require("./rules/BasicEffectRulePlugin");
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const BasicMatcherRulePlugin = require("./rules/BasicMatcherRulePlugin");
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const DescriptionDataMatcherRulePlugin = require("./rules/DescriptionDataMatcherRulePlugin");
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const RuleSetCompiler = require("./rules/RuleSetCompiler");
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const UseEffectRulePlugin = require("./rules/UseEffectRulePlugin");
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const LazySet = require("./util/LazySet");
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const { getScheme } = require("./util/URLAbsoluteSpecifier");
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const { cachedCleverMerge, cachedSetProperty } = require("./util/cleverMerge");
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const { join } = require("./util/fs");
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const { parseResource } = require("./util/identifier");
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/** @typedef {import("../declarations/WebpackOptions").ModuleOptions} ModuleOptions */
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/** @typedef {import("./Generator")} Generator */
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/** @typedef {import("./ModuleFactory").ModuleFactoryCreateData} ModuleFactoryCreateData */
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/** @typedef {import("./ModuleFactory").ModuleFactoryResult} ModuleFactoryResult */
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/** @typedef {import("./Parser")} Parser */
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/** @typedef {import("./ResolverFactory")} ResolverFactory */
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/** @typedef {import("./dependencies/ModuleDependency")} ModuleDependency */
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/** @typedef {import("./util/fs").InputFileSystem} InputFileSystem */
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/**
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* @typedef {Object} ResolveData
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* @property {ModuleFactoryCreateData["contextInfo"]} contextInfo
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* @property {ModuleFactoryCreateData["resolveOptions"]} resolveOptions
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* @property {string} context
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* @property {string} request
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* @property {ModuleDependency[]} dependencies
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* @property {Object} createData
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* @property {LazySet<string>} fileDependencies
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* @property {LazySet<string>} missingDependencies
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* @property {LazySet<string>} contextDependencies
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* @property {boolean} cacheable allow to use the unsafe cache
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*/
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/**
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* @typedef {Object} ResourceData
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* @property {string} resource
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* @property {string} path
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* @property {string} query
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* @property {string} fragment
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*/
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/** @typedef {ResourceData & { data: Record<string, any> }} ResourceDataWithData */
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const EMPTY_RESOLVE_OPTIONS = {};
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const MATCH_RESOURCE_REGEX = /^([^!]+)!=!/;
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const loaderToIdent = data => {
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if (!data.options) {
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return data.loader;
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}
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if (typeof data.options === "string") {
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return data.loader + "?" + data.options;
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}
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if (typeof data.options !== "object") {
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throw new Error("loader options must be string or object");
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}
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if (data.ident) {
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return data.loader + "??" + data.ident;
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}
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return data.loader + "?" + JSON.stringify(data.options);
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};
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const stringifyLoadersAndResource = (loaders, resource) => {
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let str = "";
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for (const loader of loaders) {
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str += loaderToIdent(loader) + "!";
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}
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return str + resource;
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};
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/**
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* @param {string} resultString resultString
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* @returns {{loader: string, options: string|undefined}} parsed loader request
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*/
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const identToLoaderRequest = resultString => {
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const idx = resultString.indexOf("?");
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if (idx >= 0) {
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const loader = resultString.substr(0, idx);
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const options = resultString.substr(idx + 1);
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return {
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loader,
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options
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};
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} else {
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return {
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loader: resultString,
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options: undefined
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};
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}
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};
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const needCalls = (times, callback) => {
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return err => {
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if (--times === 0) {
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return callback(err);
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}
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if (err && times > 0) {
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times = NaN;
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return callback(err);
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}
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};
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};
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// TODO webpack 6 remove
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const deprecationChangedHookMessage = name =>
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`NormalModuleFactory.${name} is no longer a waterfall hook, but a bailing hook instead. ` +
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"Do not return the passed object, but modify it instead. " +
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"Returning false will ignore the request and results in no module created.";
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const dependencyCache = new WeakMap();
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const ruleSetCompiler = new RuleSetCompiler([
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new BasicMatcherRulePlugin("test", "resource"),
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new BasicMatcherRulePlugin("mimetype"),
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new BasicMatcherRulePlugin("dependency"),
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new BasicMatcherRulePlugin("include", "resource"),
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new BasicMatcherRulePlugin("exclude", "resource", true),
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new BasicMatcherRulePlugin("resource"),
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new BasicMatcherRulePlugin("resourceQuery"),
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new BasicMatcherRulePlugin("resourceFragment"),
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new BasicMatcherRulePlugin("realResource"),
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new BasicMatcherRulePlugin("issuer"),
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new BasicMatcherRulePlugin("compiler"),
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new DescriptionDataMatcherRulePlugin(),
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new BasicEffectRulePlugin("type"),
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new BasicEffectRulePlugin("sideEffects"),
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new BasicEffectRulePlugin("parser"),
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new BasicEffectRulePlugin("resolve"),
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new BasicEffectRulePlugin("generator"),
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new UseEffectRulePlugin()
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]);
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class NormalModuleFactory extends ModuleFactory {
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/**
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* @param {Object} param params
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* @param {string=} param.context context
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* @param {InputFileSystem} param.fs file system
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* @param {ResolverFactory} param.resolverFactory resolverFactory
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* @param {ModuleOptions} param.options options
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* @param {Object=} param.associatedObjectForCache an object to which the cache will be attached
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*/
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constructor({
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context,
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fs,
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resolverFactory,
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options,
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associatedObjectForCache
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}) {
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super();
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this.hooks = Object.freeze({
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/** @type {AsyncSeriesBailHook<[ResolveData], TODO>} */
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resolve: new AsyncSeriesBailHook(["resolveData"]),
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/** @type {HookMap<AsyncSeriesBailHook<[ResourceDataWithData, ResolveData], true | void>>} */
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resolveForScheme: new HookMap(
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() => new AsyncSeriesBailHook(["resourceData", "resolveData"])
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),
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/** @type {AsyncSeriesBailHook<[ResolveData], TODO>} */
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factorize: new AsyncSeriesBailHook(["resolveData"]),
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/** @type {AsyncSeriesBailHook<[ResolveData], TODO>} */
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beforeResolve: new AsyncSeriesBailHook(["resolveData"]),
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/** @type {AsyncSeriesBailHook<[ResolveData], TODO>} */
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afterResolve: new AsyncSeriesBailHook(["resolveData"]),
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/** @type {AsyncSeriesBailHook<[ResolveData["createData"], ResolveData], TODO>} */
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createModule: new AsyncSeriesBailHook(["createData", "resolveData"]),
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/** @type {SyncWaterfallHook<[Module, ResolveData["createData"], ResolveData], TODO>} */
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module: new SyncWaterfallHook(["module", "createData", "resolveData"]),
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createParser: new HookMap(() => new SyncBailHook(["parserOptions"])),
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parser: new HookMap(() => new SyncHook(["parser", "parserOptions"])),
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createGenerator: new HookMap(
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() => new SyncBailHook(["generatorOptions"])
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),
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generator: new HookMap(
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() => new SyncHook(["generator", "generatorOptions"])
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)
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});
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this.resolverFactory = resolverFactory;
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this.ruleSet = ruleSetCompiler.compile([
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{
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rules: options.defaultRules
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},
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{
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rules: options.rules
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}
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]);
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this.unsafeCache = !!options.unsafeCache;
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this.cachePredicate =
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typeof options.unsafeCache === "function"
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? options.unsafeCache
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: () => true;
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this.context = context || "";
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this.fs = fs;
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/**
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* @type {Map<string, WeakMap<Object, TODO>>}
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*/
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this.parserCache = new Map();
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/**
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* @type {Map<string, WeakMap<Object, Generator>>}
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*/
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this.generatorCache = new Map();
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const cacheParseResource = parseResource.bindCache(
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associatedObjectForCache
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);
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this.hooks.factorize.tapAsync(
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{
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name: "NormalModuleFactory",
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stage: 100
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},
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(resolveData, callback) => {
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this.hooks.resolve.callAsync(resolveData, (err, result) => {
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if (err) return callback(err);
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// Ignored
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if (result === false) return callback();
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// direct module
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if (result instanceof Module) return callback(null, result);
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if (typeof result === "object")
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throw new Error(
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deprecationChangedHookMessage("resolve") +
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" Returning a Module object will result in this module used as result."
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);
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this.hooks.afterResolve.callAsync(resolveData, (err, result) => {
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if (err) return callback(err);
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if (typeof result === "object")
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throw new Error(deprecationChangedHookMessage("afterResolve"));
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// Ignored
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if (result === false) return callback();
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const createData = resolveData.createData;
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this.hooks.createModule.callAsync(
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createData,
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resolveData,
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(err, createdModule) => {
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if (!createdModule) {
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if (!resolveData.request) {
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return callback(new Error("Empty dependency (no request)"));
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}
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createdModule = new NormalModule(createData);
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}
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createdModule = this.hooks.module.call(
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createdModule,
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createData,
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resolveData
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);
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return callback(null, createdModule);
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}
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);
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});
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});
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}
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);
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this.hooks.resolve.tapAsync(
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{
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name: "NormalModuleFactory",
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stage: 100
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},
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(data, callback) => {
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const {
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contextInfo,
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context,
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dependencies,
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request,
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resolveOptions,
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fileDependencies,
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missingDependencies,
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contextDependencies
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} = data;
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const dependencyType =
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(dependencies.length > 0 && dependencies[0].category) || "";
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const loaderResolver = this.getResolver("loader");
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/** @type {ResourceData | undefined} */
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let matchResourceData = undefined;
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/** @type {string} */
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let requestWithoutMatchResource = request;
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const matchResourceMatch = MATCH_RESOURCE_REGEX.exec(request);
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if (matchResourceMatch) {
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let matchResource = matchResourceMatch[1];
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if (matchResource.charCodeAt(0) === 46) {
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// 46 === ".", 47 === "/"
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const secondChar = matchResource.charCodeAt(1);
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if (
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secondChar === 47 ||
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(secondChar === 46 && matchResource.charCodeAt(2) === 47)
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) {
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// if matchResources startsWith ../ or ./
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matchResource = join(this.fs, context, matchResource);
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}
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}
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matchResourceData = {
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resource: matchResource,
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...cacheParseResource(matchResource)
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};
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requestWithoutMatchResource = request.substr(
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matchResourceMatch[0].length
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);
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}
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const firstChar = requestWithoutMatchResource.charCodeAt(0);
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const secondChar = requestWithoutMatchResource.charCodeAt(1);
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const noPreAutoLoaders = firstChar === 45 && secondChar === 33; // startsWith "-!"
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const noAutoLoaders = noPreAutoLoaders || firstChar === 33; // startsWith "!"
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const noPrePostAutoLoaders = firstChar === 33 && secondChar === 33; // startsWith "!!";
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const rawElements = requestWithoutMatchResource
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.slice(
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noPreAutoLoaders || noPrePostAutoLoaders ? 2 : noAutoLoaders ? 1 : 0
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)
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.split(/!+/);
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const unresolvedResource = rawElements.pop();
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const elements = rawElements.map(identToLoaderRequest);
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const resolveContext = {
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fileDependencies,
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missingDependencies,
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contextDependencies
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};
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/** @type {ResourceDataWithData} */
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let resourceData;
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/** @type {string | undefined} */
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const scheme = getScheme(unresolvedResource);
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let loaders;
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const continueCallback = needCalls(2, err => {
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if (err) return callback(err);
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// translate option idents
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try {
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for (const item of loaders) {
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if (typeof item.options === "string" && item.options[0] === "?") {
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const ident = item.options.substr(1);
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if (ident === "[[missing ident]]") {
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throw new Error(
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"No ident is provided by referenced loader. " +
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"When using a function for Rule.use in config you need to " +
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"provide an 'ident' property for referenced loader options."
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);
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}
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item.options = this.ruleSet.references.get(ident);
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if (item.options === undefined) {
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throw new Error(
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"Invalid ident is provided by referenced loader"
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);
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}
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item.ident = ident;
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}
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}
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} catch (e) {
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return callback(e);
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}
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if (!resourceData) {
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// ignored
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return callback(
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null,
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new RawModule(
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"/* (ignored) */",
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`ignored|${request}`,
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`${request} (ignored)`
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)
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);
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}
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const userRequest =
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(matchResourceData !== undefined
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? `${matchResourceData.resource}!=!`
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: "") +
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stringifyLoadersAndResource(loaders, resourceData.resource);
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const resourceDataForRules = matchResourceData || resourceData;
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const result = this.ruleSet.exec({
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resource: resourceDataForRules.path,
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realResource: resourceData.path,
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resourceQuery: resourceDataForRules.query,
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resourceFragment: resourceDataForRules.fragment,
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mimetype: matchResourceData ? "" : resourceData.data.mimetype || "",
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dependency: dependencyType,
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descriptionData: matchResourceData
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? undefined
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: resourceData.data.descriptionFileData,
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issuer: contextInfo.issuer,
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compiler: contextInfo.compiler
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});
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const settings = {};
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const useLoadersPost = [];
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const useLoaders = [];
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const useLoadersPre = [];
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for (const r of result) {
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if (r.type === "use") {
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if (!noAutoLoaders && !noPrePostAutoLoaders) {
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useLoaders.push(r.value);
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}
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} else if (r.type === "use-post") {
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if (!noPrePostAutoLoaders) {
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useLoadersPost.push(r.value);
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}
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} else if (r.type === "use-pre") {
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if (!noPreAutoLoaders && !noPrePostAutoLoaders) {
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useLoadersPre.push(r.value);
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}
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} else if (
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typeof r.value === "object" &&
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r.value !== null &&
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typeof settings[r.type] === "object" &&
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settings[r.type] !== null
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) {
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settings[r.type] = cachedCleverMerge(settings[r.type], r.value);
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} else {
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settings[r.type] = r.value;
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}
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}
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let postLoaders, normalLoaders, preLoaders;
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const continueCallback = needCalls(3, err => {
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if (err) {
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return callback(err);
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}
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const allLoaders = postLoaders;
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if (matchResourceData === undefined) {
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for (const loader of loaders) allLoaders.push(loader);
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for (const loader of normalLoaders) allLoaders.push(loader);
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} else {
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for (const loader of normalLoaders) allLoaders.push(loader);
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for (const loader of loaders) allLoaders.push(loader);
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}
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for (const loader of preLoaders) allLoaders.push(loader);
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const type = settings.type;
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const resolveOptions = settings.resolve;
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Object.assign(data.createData, {
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request: stringifyLoadersAndResource(
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allLoaders,
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resourceData.resource
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),
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userRequest,
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rawRequest: request,
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loaders: allLoaders,
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resource: resourceData.resource,
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matchResource: matchResourceData
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? matchResourceData.resource
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: undefined,
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resourceResolveData: resourceData.data,
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settings,
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type,
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parser: this.getParser(type, settings.parser),
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generator: this.getGenerator(type, settings.generator),
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resolveOptions
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});
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callback();
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});
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this.resolveRequestArray(
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contextInfo,
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this.context,
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useLoadersPost,
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loaderResolver,
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resolveContext,
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(err, result) => {
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postLoaders = result;
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continueCallback(err);
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}
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);
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this.resolveRequestArray(
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contextInfo,
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this.context,
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useLoaders,
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loaderResolver,
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resolveContext,
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(err, result) => {
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normalLoaders = result;
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continueCallback(err);
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}
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);
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this.resolveRequestArray(
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contextInfo,
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this.context,
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useLoadersPre,
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loaderResolver,
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resolveContext,
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(err, result) => {
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preLoaders = result;
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continueCallback(err);
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}
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);
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});
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this.resolveRequestArray(
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contextInfo,
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context,
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elements,
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loaderResolver,
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resolveContext,
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(err, result) => {
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if (err) return continueCallback(err);
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loaders = result;
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continueCallback();
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}
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);
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// resource with scheme
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if (scheme) {
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resourceData = {
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resource: unresolvedResource,
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data: {},
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path: undefined,
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query: undefined,
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fragment: undefined
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};
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this.hooks.resolveForScheme
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.for(scheme)
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.callAsync(resourceData, data, err => {
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if (err) return continueCallback(err);
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continueCallback();
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});
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}
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// resource without scheme and without path
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else if (/^($|\?|#)/.test(unresolvedResource)) {
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resourceData = {
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resource: unresolvedResource,
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data: {},
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...cacheParseResource(unresolvedResource)
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};
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continueCallback();
|
|
}
|
|
|
|
// resource without scheme and with path
|
|
else {
|
|
const normalResolver = this.getResolver(
|
|
"normal",
|
|
dependencyType
|
|
? cachedSetProperty(
|
|
resolveOptions || EMPTY_RESOLVE_OPTIONS,
|
|
"dependencyType",
|
|
dependencyType
|
|
)
|
|
: resolveOptions
|
|
);
|
|
this.resolveResource(
|
|
contextInfo,
|
|
context,
|
|
unresolvedResource,
|
|
normalResolver,
|
|
resolveContext,
|
|
(err, resolvedResource, resolvedResourceResolveData) => {
|
|
if (err) return continueCallback(err);
|
|
if (resolvedResource !== false) {
|
|
resourceData = {
|
|
resource: resolvedResource,
|
|
data: resolvedResourceResolveData,
|
|
...cacheParseResource(resolvedResource)
|
|
};
|
|
}
|
|
continueCallback();
|
|
}
|
|
);
|
|
}
|
|
}
|
|
);
|
|
}
|
|
|
|
/**
|
|
* @param {ModuleFactoryCreateData} data data object
|
|
* @param {function(Error=, ModuleFactoryResult=): void} callback callback
|
|
* @returns {void}
|
|
*/
|
|
create(data, callback) {
|
|
const dependencies = /** @type {ModuleDependency[]} */ (data.dependencies);
|
|
if (this.unsafeCache) {
|
|
const cacheEntry = dependencyCache.get(dependencies[0]);
|
|
if (cacheEntry) return callback(null, cacheEntry);
|
|
}
|
|
const context = data.context || this.context;
|
|
const resolveOptions = data.resolveOptions || EMPTY_RESOLVE_OPTIONS;
|
|
const dependency = dependencies[0];
|
|
const request = dependency.request;
|
|
const contextInfo = data.contextInfo;
|
|
const fileDependencies = new LazySet();
|
|
const missingDependencies = new LazySet();
|
|
const contextDependencies = new LazySet();
|
|
/** @type {ResolveData} */
|
|
const resolveData = {
|
|
contextInfo,
|
|
resolveOptions,
|
|
context,
|
|
request,
|
|
dependencies,
|
|
fileDependencies,
|
|
missingDependencies,
|
|
contextDependencies,
|
|
createData: {},
|
|
cacheable: true
|
|
};
|
|
this.hooks.beforeResolve.callAsync(resolveData, (err, result) => {
|
|
if (err) {
|
|
return callback(err, {
|
|
fileDependencies,
|
|
missingDependencies,
|
|
contextDependencies
|
|
});
|
|
}
|
|
|
|
// Ignored
|
|
if (result === false) {
|
|
return callback(null, {
|
|
fileDependencies,
|
|
missingDependencies,
|
|
contextDependencies
|
|
});
|
|
}
|
|
|
|
if (typeof result === "object")
|
|
throw new Error(deprecationChangedHookMessage("beforeResolve"));
|
|
|
|
this.hooks.factorize.callAsync(resolveData, (err, module) => {
|
|
if (err) {
|
|
return callback(err, {
|
|
fileDependencies,
|
|
missingDependencies,
|
|
contextDependencies
|
|
});
|
|
}
|
|
|
|
const factoryResult = {
|
|
module,
|
|
fileDependencies,
|
|
missingDependencies,
|
|
contextDependencies
|
|
};
|
|
|
|
if (
|
|
this.unsafeCache &&
|
|
resolveData.cacheable &&
|
|
module &&
|
|
this.cachePredicate(module)
|
|
) {
|
|
for (const d of dependencies) {
|
|
dependencyCache.set(d, factoryResult);
|
|
}
|
|
}
|
|
|
|
callback(null, factoryResult);
|
|
});
|
|
});
|
|
}
|
|
|
|
resolveResource(
|
|
contextInfo,
|
|
context,
|
|
unresolvedResource,
|
|
resolver,
|
|
resolveContext,
|
|
callback
|
|
) {
|
|
resolver.resolve(
|
|
contextInfo,
|
|
context,
|
|
unresolvedResource,
|
|
resolveContext,
|
|
(err, resolvedResource, resolvedResourceResolveData) => {
|
|
if (err) {
|
|
if (resolver.options.fullySpecified) {
|
|
resolver
|
|
.withOptions({
|
|
fullySpecified: false
|
|
})
|
|
.resolve(
|
|
contextInfo,
|
|
context,
|
|
unresolvedResource,
|
|
resolveContext,
|
|
(err2, resolvedResource) => {
|
|
if (!err2 && resolvedResource) {
|
|
const resource = parseResource(
|
|
resolvedResource
|
|
).path.replace(/^.*[\\/]/, "");
|
|
err.message += `
|
|
Did you mean '${resource}'?
|
|
BREAKING CHANGE: The request '${unresolvedResource}' failed to resolve only because it was resolved as fully specified
|
|
(probably because the origin is a '*.mjs' file or a '*.js' file where the package.json contains '"type": "module"').
|
|
The extension in the request is mandatory for it to be fully specified.
|
|
Add the extension to the request.`;
|
|
}
|
|
callback(err);
|
|
}
|
|
);
|
|
return;
|
|
}
|
|
}
|
|
callback(err, resolvedResource, resolvedResourceResolveData);
|
|
}
|
|
);
|
|
}
|
|
|
|
resolveRequestArray(
|
|
contextInfo,
|
|
context,
|
|
array,
|
|
resolver,
|
|
resolveContext,
|
|
callback
|
|
) {
|
|
if (array.length === 0) return callback(null, array);
|
|
asyncLib.map(
|
|
array,
|
|
(item, callback) => {
|
|
resolver.resolve(
|
|
contextInfo,
|
|
context,
|
|
item.loader,
|
|
resolveContext,
|
|
(err, result) => {
|
|
if (
|
|
err &&
|
|
/^[^/]*$/.test(item.loader) &&
|
|
!/-loader$/.test(item.loader)
|
|
) {
|
|
return resolver.resolve(
|
|
contextInfo,
|
|
context,
|
|
item.loader + "-loader",
|
|
resolveContext,
|
|
err2 => {
|
|
if (!err2) {
|
|
err.message =
|
|
err.message +
|
|
"\n" +
|
|
"BREAKING CHANGE: It's no longer allowed to omit the '-loader' suffix when using loaders.\n" +
|
|
` You need to specify '${item.loader}-loader' instead of '${item.loader}',\n` +
|
|
" see https://webpack.js.org/migrate/3/#automatic-loader-module-name-extension-removed";
|
|
}
|
|
callback(err);
|
|
}
|
|
);
|
|
}
|
|
if (err) return callback(err);
|
|
|
|
const parsedResult = identToLoaderRequest(result);
|
|
const resolved = {
|
|
loader: parsedResult.loader,
|
|
options:
|
|
item.options === undefined
|
|
? parsedResult.options
|
|
: item.options,
|
|
ident: item.options === undefined ? undefined : item.ident
|
|
};
|
|
return callback(null, resolved);
|
|
}
|
|
);
|
|
},
|
|
callback
|
|
);
|
|
}
|
|
|
|
getParser(type, parserOptions = EMPTY_RESOLVE_OPTIONS) {
|
|
let cache = this.parserCache.get(type);
|
|
|
|
if (cache === undefined) {
|
|
cache = new WeakMap();
|
|
this.parserCache.set(type, cache);
|
|
}
|
|
|
|
let parser = cache.get(parserOptions);
|
|
|
|
if (parser === undefined) {
|
|
parser = this.createParser(type, parserOptions);
|
|
cache.set(parserOptions, parser);
|
|
}
|
|
|
|
return parser;
|
|
}
|
|
|
|
/**
|
|
* @param {string} type type
|
|
* @param {{[k: string]: any}} parserOptions parser options
|
|
* @returns {Parser} parser
|
|
*/
|
|
createParser(type, parserOptions = {}) {
|
|
const parser = this.hooks.createParser.for(type).call(parserOptions);
|
|
if (!parser) {
|
|
throw new Error(`No parser registered for ${type}`);
|
|
}
|
|
this.hooks.parser.for(type).call(parser, parserOptions);
|
|
return parser;
|
|
}
|
|
|
|
getGenerator(type, generatorOptions = EMPTY_RESOLVE_OPTIONS) {
|
|
let cache = this.generatorCache.get(type);
|
|
|
|
if (cache === undefined) {
|
|
cache = new WeakMap();
|
|
this.generatorCache.set(type, cache);
|
|
}
|
|
|
|
let generator = cache.get(generatorOptions);
|
|
|
|
if (generator === undefined) {
|
|
generator = this.createGenerator(type, generatorOptions);
|
|
cache.set(generatorOptions, generator);
|
|
}
|
|
|
|
return generator;
|
|
}
|
|
|
|
createGenerator(type, generatorOptions = {}) {
|
|
const generator = this.hooks.createGenerator
|
|
.for(type)
|
|
.call(generatorOptions);
|
|
if (!generator) {
|
|
throw new Error(`No generator registered for ${type}`);
|
|
}
|
|
this.hooks.generator.for(type).call(generator, generatorOptions);
|
|
return generator;
|
|
}
|
|
|
|
getResolver(type, resolveOptions) {
|
|
return this.resolverFactory.get(type, resolveOptions);
|
|
}
|
|
}
|
|
|
|
module.exports = NormalModuleFactory;
|