mirror of https://github.com/webpack/webpack.git
1041 lines
30 KiB
JavaScript
1041 lines
30 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 { OriginalSource, RawSource } = require("webpack-sources");
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const AsyncDependenciesBlock = require("./AsyncDependenciesBlock");
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const Module = require("./Module");
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const RuntimeGlobals = require("./RuntimeGlobals");
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const Template = require("./Template");
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const WebpackError = require("./WebpackError");
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const {
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compareLocations,
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concatComparators,
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compareSelect,
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keepOriginalOrder
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} = require("./util/comparators");
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const { compareModulesById } = require("./util/comparators");
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const { contextify } = require("./util/identifier");
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const makeSerializable = require("./util/makeSerializable");
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/** @typedef {import("webpack-sources").Source} Source */
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/** @typedef {import("../declarations/WebpackOptions").WebpackOptions} WebpackOptions */
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/** @typedef {import("./ChunkGraph")} ChunkGraph */
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/** @typedef {import("./ChunkGroup").RawChunkGroupOptions} RawChunkGroupOptions */
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/** @typedef {import("./Compilation")} Compilation */
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/** @typedef {import("./DependencyTemplates")} DependencyTemplates */
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/** @typedef {import("./Module").CodeGenerationContext} CodeGenerationContext */
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/** @typedef {import("./Module").CodeGenerationResult} CodeGenerationResult */
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/** @typedef {import("./Module").LibIdentOptions} LibIdentOptions */
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/** @typedef {import("./Module").NeedBuildContext} NeedBuildContext */
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/** @typedef {import("./ModuleGraph")} ModuleGraph */
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/** @typedef {import("./RequestShortener")} RequestShortener */
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/** @typedef {import("./ResolverFactory").ResolverWithOptions} ResolverWithOptions */
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/** @typedef {import("./RuntimeTemplate")} RuntimeTemplate */
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/** @typedef {import("./dependencies/ContextElementDependency")} ContextElementDependency */
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/** @typedef {import("./util/fs").InputFileSystem} InputFileSystem */
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/** @typedef {"sync" | "eager" | "weak" | "async-weak" | "lazy" | "lazy-once"} ContextMode Context mode */
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/**
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* @typedef {Object} ContextOptions
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* @property {ContextMode} mode
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* @property {boolean} recursive
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* @property {RegExp} regExp
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* @property {"strict"|boolean=} namespaceObject
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* @property {string=} addon
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* @property {string=} chunkName
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* @property {RegExp=} include
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* @property {RegExp=} exclude
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* @property {RawChunkGroupOptions=} groupOptions
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*/
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/**
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* @typedef {Object} ContextModuleOptionsExtras
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* @property {string} resource
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* @property {string=} resourceQuery
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* @property {TODO} resolveOptions
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*/
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/** @typedef {ContextOptions & ContextModuleOptionsExtras} ContextModuleOptions */
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/**
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* @callback ResolveDependenciesCallback
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* @param {Error=} err
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* @param {ContextElementDependency[]} dependencies
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*/
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/**
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* @callback ResolveDependencies
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* @param {TODO} fs
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* @param {TODO} options
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* @param {ResolveDependenciesCallback} callback
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*/
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const TYPES = new Set(["javascript"]);
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class ContextModule extends Module {
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/**
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* @param {ResolveDependencies} resolveDependencies function to get dependencies in this context
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* @param {ContextModuleOptions} options options object
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*/
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constructor(resolveDependencies, options) {
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let resource;
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let resourceQuery;
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if (options.resourceQuery) {
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resource = options.resource;
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resourceQuery = options.resourceQuery;
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} else {
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const queryIdx = options.resource.indexOf("?");
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if (queryIdx >= 0) {
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resource = options.resource.substr(0, queryIdx);
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resourceQuery = options.resource.substr(queryIdx);
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} else {
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resource = options.resource;
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resourceQuery = "";
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}
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}
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super("javascript/dynamic", resource);
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// Info from Factory
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this.resolveDependencies = resolveDependencies;
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/** @type {ContextModuleOptions} */
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this.options = ({
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resource: resource,
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resourceQuery: resourceQuery,
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mode: options.mode,
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recursive: options.recursive,
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addon: options.addon,
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regExp: options.regExp,
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include: options.include,
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exclude: options.exclude,
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chunkName: options.chunkName,
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groupOptions: options.groupOptions,
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namespaceObject: options.namespaceObject
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});
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if (options.resolveOptions !== undefined) {
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this.resolveOptions = options.resolveOptions;
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}
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// Info from Build
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this._contextDependencies = new Set([this.context]);
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if (typeof options.mode !== "string") {
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throw new Error("options.mode is a required option");
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}
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this._identifier = this._createIdentifier();
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this._forceBuild = true;
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}
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/**
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* @returns {Set<string>} types availiable (do not mutate)
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*/
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getSourceTypes() {
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return TYPES;
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}
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/**
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* Assuming this module is in the cache. Update the (cached) module with
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* the fresh module from the factory. Usually updates internal references
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* and properties.
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* @param {Module} module fresh module
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* @returns {void}
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*/
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updateCacheModule(module) {
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const m = /** @type {ContextModule} */ (module);
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this.resolveDependencies = m.resolveDependencies;
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this.options = m.options;
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this.resolveOptions = m.resolveOptions;
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}
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prettyRegExp(regexString) {
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// remove the "/" at the front and the beginning
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// "/foo/" -> "foo"
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return regexString.substring(1, regexString.length - 1);
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}
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_createIdentifier() {
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let identifier = this.context;
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if (this.options.resourceQuery) {
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identifier += `|${this.options.resourceQuery}`;
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}
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if (this.options.mode) {
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identifier += `|${this.options.mode}`;
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}
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if (!this.options.recursive) {
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identifier += "|nonrecursive";
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}
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if (this.options.addon) {
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identifier += `|${this.options.addon}`;
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}
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if (this.options.regExp) {
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identifier += `|${this.options.regExp}`;
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}
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if (this.options.include) {
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identifier += `|include: ${this.options.include}`;
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}
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if (this.options.exclude) {
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identifier += `|exclude: ${this.options.exclude}`;
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}
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if (this.options.chunkName) {
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identifier += `|chunkName: ${this.options.chunkName}`;
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}
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if (this.options.groupOptions) {
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identifier += `|groupOptions: ${JSON.stringify(
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this.options.groupOptions
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)}`;
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}
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if (this.options.namespaceObject === "strict") {
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identifier += "|strict namespace object";
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} else if (this.options.namespaceObject) {
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identifier += "|namespace object";
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}
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return identifier;
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}
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/**
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* @returns {string} a unique identifier of the module
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*/
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identifier() {
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return this._identifier;
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}
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/**
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* @param {RequestShortener} requestShortener the request shortener
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* @returns {string} a user readable identifier of the module
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*/
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readableIdentifier(requestShortener) {
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let identifier = requestShortener.shorten(this.context);
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if (this.options.resourceQuery) {
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identifier += ` ${this.options.resourceQuery}`;
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}
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if (this.options.mode) {
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identifier += ` ${this.options.mode}`;
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}
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if (!this.options.recursive) {
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identifier += " nonrecursive";
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}
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if (this.options.addon) {
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identifier += ` ${requestShortener.shorten(this.options.addon)}`;
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}
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if (this.options.regExp) {
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identifier += ` ${this.prettyRegExp(this.options.regExp + "")}`;
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}
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if (this.options.include) {
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identifier += ` include: ${this.prettyRegExp(this.options.include + "")}`;
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}
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if (this.options.exclude) {
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identifier += ` exclude: ${this.prettyRegExp(this.options.exclude + "")}`;
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}
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if (this.options.chunkName) {
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identifier += ` chunkName: ${this.options.chunkName}`;
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}
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if (this.options.groupOptions) {
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const groupOptions = this.options.groupOptions;
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for (const key of Object.keys(groupOptions)) {
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identifier += ` ${key}: ${groupOptions[key]}`;
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}
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}
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if (this.options.namespaceObject === "strict") {
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identifier += " strict namespace object";
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} else if (this.options.namespaceObject) {
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identifier += " namespace object";
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}
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return identifier;
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}
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/**
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* @param {LibIdentOptions} options options
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* @returns {string | null} an identifier for library inclusion
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*/
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libIdent(options) {
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let identifier = contextify(
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options.context,
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this.context,
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options.associatedObjectForCache
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);
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if (this.options.mode) {
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identifier += ` ${this.options.mode}`;
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}
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if (this.options.recursive) {
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identifier += " recursive";
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}
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if (this.options.addon) {
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identifier += ` ${contextify(
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options.context,
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this.options.addon,
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options.associatedObjectForCache
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)}`;
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}
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if (this.options.regExp) {
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identifier += ` ${this.prettyRegExp(this.options.regExp + "")}`;
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}
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if (this.options.include) {
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identifier += ` include: ${this.prettyRegExp(this.options.include + "")}`;
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}
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if (this.options.exclude) {
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identifier += ` exclude: ${this.prettyRegExp(this.options.exclude + "")}`;
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}
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return identifier;
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}
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/**
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* @returns {void}
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*/
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invalidateBuild() {
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this._forceBuild = true;
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}
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/**
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* @param {NeedBuildContext} context context info
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* @param {function(WebpackError=, boolean=): void} callback callback function, returns true, if the module needs a rebuild
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* @returns {void}
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*/
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needBuild({ fileSystemInfo }, callback) {
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// build if enforced
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if (this._forceBuild) return callback(null, true);
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// always build when we have no snapshot
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if (!this.buildInfo.snapshot) return callback(null, true);
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fileSystemInfo.checkSnapshotValid(this.buildInfo.snapshot, (err, valid) => {
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callback(err, !valid);
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});
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}
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/**
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* @param {WebpackOptions} options webpack options
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* @param {Compilation} compilation the compilation
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* @param {ResolverWithOptions} resolver the resolver
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* @param {InputFileSystem} fs the file system
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* @param {function(WebpackError=): void} callback callback function
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* @returns {void}
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*/
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build(options, compilation, resolver, fs, callback) {
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this._forceBuild = false;
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this.buildMeta = {};
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this.buildInfo = {
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snapshot: undefined,
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contextDependencies: this._contextDependencies
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};
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this.dependencies.length = 0;
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this.blocks.length = 0;
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const startTime = Date.now();
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this.resolveDependencies(fs, this.options, (err, dependencies) => {
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if (err) return callback(err);
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// abort if something failed
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// this will create an empty context
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if (!dependencies) {
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callback();
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return;
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}
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// enhance dependencies with meta info
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for (const dep of dependencies) {
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dep.loc = {
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name: dep.userRequest
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};
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dep.request = this.options.addon + dep.request;
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}
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dependencies.sort(
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concatComparators(
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compareSelect(a => a.loc, compareLocations),
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keepOriginalOrder(this.dependencies)
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)
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);
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if (this.options.mode === "sync" || this.options.mode === "eager") {
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// if we have an sync or eager context
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// just add all dependencies and continue
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this.dependencies = dependencies;
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} else if (this.options.mode === "lazy-once") {
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// for the lazy-once mode create a new async dependency block
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// and add that block to this context
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if (dependencies.length > 0) {
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const block = new AsyncDependenciesBlock({
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...this.options.groupOptions,
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name: this.options.chunkName
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});
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for (const dep of dependencies) {
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block.addDependency(dep);
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}
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this.addBlock(block);
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}
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} else if (
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this.options.mode === "weak" ||
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this.options.mode === "async-weak"
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) {
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// we mark all dependencies as weak
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for (const dep of dependencies) {
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dep.weak = true;
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}
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this.dependencies = dependencies;
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} else if (this.options.mode === "lazy") {
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// if we are lazy create a new async dependency block per dependency
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// and add all blocks to this context
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let index = 0;
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for (const dep of dependencies) {
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let chunkName = this.options.chunkName;
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if (chunkName) {
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if (!/\[(index|request)\]/.test(chunkName)) {
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chunkName += "[index]";
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}
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chunkName = chunkName.replace(/\[index\]/g, `${index++}`);
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chunkName = chunkName.replace(
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/\[request\]/g,
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Template.toPath(dep.userRequest)
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);
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}
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const block = new AsyncDependenciesBlock(
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{
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...this.options.groupOptions,
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name: chunkName
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},
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dep.loc,
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dep.userRequest
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);
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block.addDependency(dep);
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this.addBlock(block);
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}
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} else {
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callback(
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new WebpackError(`Unsupported mode "${this.options.mode}" in context`)
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);
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return;
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}
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compilation.fileSystemInfo.createSnapshot(
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startTime,
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null,
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[this.context],
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null,
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{},
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(err, snapshot) => {
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if (err) return callback(err);
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this.buildInfo.snapshot = snapshot;
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callback();
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}
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);
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});
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}
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/**
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* @param {ContextElementDependency[]} dependencies all dependencies
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* @param {ChunkGraph} chunkGraph chunk graph
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* @returns {TODO} TODO
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*/
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getUserRequestMap(dependencies, chunkGraph) {
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const moduleGraph = chunkGraph.moduleGraph;
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// if we filter first we get a new array
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// therefore we dont need to create a clone of dependencies explicitly
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// therefore the order of this is !important!
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const sortedDependencies = dependencies
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.filter(dependency => moduleGraph.getModule(dependency))
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.sort((a, b) => {
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if (a.userRequest === b.userRequest) {
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return 0;
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}
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return a.userRequest < b.userRequest ? -1 : 1;
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});
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const map = Object.create(null);
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for (const dep of sortedDependencies) {
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const module = moduleGraph.getModule(dep);
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map[dep.userRequest] = chunkGraph.getModuleId(module);
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}
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return map;
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}
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/**
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* @param {ContextElementDependency[]} dependencies all dependencies
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* @param {ChunkGraph} chunkGraph chunk graph
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* @returns {TODO} TODO
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*/
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getFakeMap(dependencies, chunkGraph) {
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if (!this.options.namespaceObject) {
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return 9;
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}
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const moduleGraph = chunkGraph.moduleGraph;
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// bitfield
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let hasType = 0;
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const comparator = compareModulesById(chunkGraph);
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// if we filter first we get a new array
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// therefore we dont need to create a clone of dependencies explicitly
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// therefore the order of this is !important!
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const sortedModules = dependencies
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.map(dependency => moduleGraph.getModule(dependency))
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.filter(Boolean)
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.sort(comparator);
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const fakeMap = Object.create(null);
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for (const module of sortedModules) {
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const exportsType = module.getExportsType(
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this.options.namespaceObject === "strict"
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);
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const id = chunkGraph.getModuleId(module);
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switch (exportsType) {
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case "namespace":
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fakeMap[id] = 9;
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hasType |= 1;
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break;
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case "dynamic":
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fakeMap[id] = 7;
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hasType |= 2;
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break;
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case "dynamic-default":
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case "default-only":
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fakeMap[id] = 1;
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hasType |= 4;
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break;
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case "default-with-named":
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fakeMap[id] = 3;
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hasType |= 8;
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break;
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default:
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throw new Error(`Unexpected exports type ${exportsType}`);
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}
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}
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if (hasType === 1) {
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return 9;
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}
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if (hasType === 2) {
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return 7;
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}
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if (hasType === 4) {
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return 1;
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}
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if (hasType === 8) {
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return 3;
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}
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if (hasType === 0) {
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return 9;
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}
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return fakeMap;
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}
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getFakeMapInitStatement(fakeMap) {
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return typeof fakeMap === "object"
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? `var fakeMap = ${JSON.stringify(fakeMap, null, "\t")};`
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: "";
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}
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getReturn(type) {
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if (type === 9) {
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return "__webpack_require__(id)";
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}
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return `${RuntimeGlobals.createFakeNamespaceObject}(id, ${type})`;
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}
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getReturnModuleObjectSource(fakeMap, fakeMapDataExpression = "fakeMap[id]") {
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if (typeof fakeMap === "number") {
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return `return ${this.getReturn(fakeMap)};`;
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}
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return `return ${RuntimeGlobals.createFakeNamespaceObject}(id, ${fakeMapDataExpression})`;
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}
|
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|
|
/**
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* @param {TODO} dependencies TODO
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* @param {TODO} id TODO
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* @param {ChunkGraph} chunkGraph the chunk graph
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|
* @returns {string} source code
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*/
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getSyncSource(dependencies, id, chunkGraph) {
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const map = this.getUserRequestMap(dependencies, chunkGraph);
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const fakeMap = this.getFakeMap(dependencies, chunkGraph);
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const returnModuleObject = this.getReturnModuleObjectSource(fakeMap);
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|
|
|
return `var map = ${JSON.stringify(map, null, "\t")};
|
|
${this.getFakeMapInitStatement(fakeMap)}
|
|
|
|
function webpackContext(req) {
|
|
var id = webpackContextResolve(req);
|
|
${returnModuleObject}
|
|
}
|
|
function webpackContextResolve(req) {
|
|
if(!${RuntimeGlobals.hasOwnProperty}(map, req)) {
|
|
var e = new Error("Cannot find module '" + req + "'");
|
|
e.code = 'MODULE_NOT_FOUND';
|
|
throw e;
|
|
}
|
|
return map[req];
|
|
}
|
|
webpackContext.keys = function webpackContextKeys() {
|
|
return Object.keys(map);
|
|
};
|
|
webpackContext.resolve = webpackContextResolve;
|
|
module.exports = webpackContext;
|
|
webpackContext.id = ${JSON.stringify(id)};`;
|
|
}
|
|
|
|
/**
|
|
* @param {TODO} dependencies TODO
|
|
* @param {TODO} id TODO
|
|
* @param {ChunkGraph} chunkGraph the chunk graph
|
|
* @returns {string} source code
|
|
*/
|
|
getWeakSyncSource(dependencies, id, chunkGraph) {
|
|
const map = this.getUserRequestMap(dependencies, chunkGraph);
|
|
const fakeMap = this.getFakeMap(dependencies, chunkGraph);
|
|
const returnModuleObject = this.getReturnModuleObjectSource(fakeMap);
|
|
|
|
return `var map = ${JSON.stringify(map, null, "\t")};
|
|
${this.getFakeMapInitStatement(fakeMap)}
|
|
|
|
function webpackContext(req) {
|
|
var id = webpackContextResolve(req);
|
|
if(!${RuntimeGlobals.moduleFactories}[id]) {
|
|
var e = new Error("Module '" + req + "' ('" + id + "') is not available (weak dependency)");
|
|
e.code = 'MODULE_NOT_FOUND';
|
|
throw e;
|
|
}
|
|
${returnModuleObject}
|
|
}
|
|
function webpackContextResolve(req) {
|
|
if(!${RuntimeGlobals.hasOwnProperty}(map, req)) {
|
|
var e = new Error("Cannot find module '" + req + "'");
|
|
e.code = 'MODULE_NOT_FOUND';
|
|
throw e;
|
|
}
|
|
return map[req];
|
|
}
|
|
webpackContext.keys = function webpackContextKeys() {
|
|
return Object.keys(map);
|
|
};
|
|
webpackContext.resolve = webpackContextResolve;
|
|
webpackContext.id = ${JSON.stringify(id)};
|
|
module.exports = webpackContext;`;
|
|
}
|
|
|
|
/**
|
|
* @param {TODO} dependencies TODO
|
|
* @param {TODO} id TODO
|
|
* @param {Object} context context
|
|
* @param {ChunkGraph} context.chunkGraph the chunk graph
|
|
* @param {RuntimeTemplate} context.runtimeTemplate the chunk graph
|
|
* @returns {string} source code
|
|
*/
|
|
getAsyncWeakSource(dependencies, id, { chunkGraph, runtimeTemplate }) {
|
|
const arrow = runtimeTemplate.supportsArrowFunction();
|
|
const map = this.getUserRequestMap(dependencies, chunkGraph);
|
|
const fakeMap = this.getFakeMap(dependencies, chunkGraph);
|
|
const returnModuleObject = this.getReturnModuleObjectSource(fakeMap);
|
|
|
|
return `var map = ${JSON.stringify(map, null, "\t")};
|
|
${this.getFakeMapInitStatement(fakeMap)}
|
|
|
|
function webpackAsyncContext(req) {
|
|
return webpackAsyncContextResolve(req).then(${
|
|
arrow ? "id =>" : "function(id)"
|
|
} {
|
|
if(!${RuntimeGlobals.moduleFactories}[id]) {
|
|
var e = new Error("Module '" + req + "' ('" + id + "') is not available (weak dependency)");
|
|
e.code = 'MODULE_NOT_FOUND';
|
|
throw e;
|
|
}
|
|
${returnModuleObject}
|
|
});
|
|
}
|
|
function webpackAsyncContextResolve(req) {
|
|
// Here Promise.resolve().then() is used instead of new Promise() to prevent
|
|
// uncaught exception popping up in devtools
|
|
return Promise.resolve().then(${arrow ? "() =>" : "function()"} {
|
|
if(!${RuntimeGlobals.hasOwnProperty}(map, req)) {
|
|
var e = new Error("Cannot find module '" + req + "'");
|
|
e.code = 'MODULE_NOT_FOUND';
|
|
throw e;
|
|
}
|
|
return map[req];
|
|
});
|
|
}
|
|
webpackAsyncContext.keys = ${runtimeTemplate.returningFunction(
|
|
"Object.keys(map)"
|
|
)};
|
|
webpackAsyncContext.resolve = webpackAsyncContextResolve;
|
|
webpackAsyncContext.id = ${JSON.stringify(id)};
|
|
module.exports = webpackAsyncContext;`;
|
|
}
|
|
|
|
/**
|
|
* @param {TODO} dependencies TODO
|
|
* @param {TODO} id TODO
|
|
* @param {Object} context context
|
|
* @param {ChunkGraph} context.chunkGraph the chunk graph
|
|
* @param {RuntimeTemplate} context.runtimeTemplate the chunk graph
|
|
* @returns {string} source code
|
|
*/
|
|
getEagerSource(dependencies, id, { chunkGraph, runtimeTemplate }) {
|
|
const arrow = runtimeTemplate.supportsArrowFunction();
|
|
const map = this.getUserRequestMap(dependencies, chunkGraph);
|
|
const fakeMap = this.getFakeMap(dependencies, chunkGraph);
|
|
const thenFunction =
|
|
fakeMap !== 9
|
|
? `${arrow ? "id =>" : "function(id)"} {
|
|
${this.getReturnModuleObjectSource(fakeMap)}
|
|
}`
|
|
: "__webpack_require__";
|
|
return `var map = ${JSON.stringify(map, null, "\t")};
|
|
${this.getFakeMapInitStatement(fakeMap)}
|
|
|
|
function webpackAsyncContext(req) {
|
|
return webpackAsyncContextResolve(req).then(${thenFunction});
|
|
}
|
|
function webpackAsyncContextResolve(req) {
|
|
// Here Promise.resolve().then() is used instead of new Promise() to prevent
|
|
// uncaught exception popping up in devtools
|
|
return Promise.resolve().then(${arrow ? "() =>" : "function()"} {
|
|
if(!${RuntimeGlobals.hasOwnProperty}(map, req)) {
|
|
var e = new Error("Cannot find module '" + req + "'");
|
|
e.code = 'MODULE_NOT_FOUND';
|
|
throw e;
|
|
}
|
|
return map[req];
|
|
});
|
|
}
|
|
webpackAsyncContext.keys = ${runtimeTemplate.returningFunction(
|
|
"Object.keys(map)"
|
|
)};
|
|
webpackAsyncContext.resolve = webpackAsyncContextResolve;
|
|
webpackAsyncContext.id = ${JSON.stringify(id)};
|
|
module.exports = webpackAsyncContext;`;
|
|
}
|
|
|
|
/**
|
|
* @param {TODO} block TODO
|
|
* @param {TODO} dependencies TODO
|
|
* @param {TODO} id TODO
|
|
* @param {Object} options options object
|
|
* @param {RuntimeTemplate} options.runtimeTemplate the runtime template
|
|
* @param {ChunkGraph} options.chunkGraph the chunk graph
|
|
* @returns {string} source code
|
|
*/
|
|
getLazyOnceSource(block, dependencies, id, { runtimeTemplate, chunkGraph }) {
|
|
const promise = runtimeTemplate.blockPromise({
|
|
chunkGraph,
|
|
block,
|
|
message: "lazy-once context",
|
|
runtimeRequirements: new Set()
|
|
});
|
|
const arrow = runtimeTemplate.supportsArrowFunction();
|
|
const map = this.getUserRequestMap(dependencies, chunkGraph);
|
|
const fakeMap = this.getFakeMap(dependencies, chunkGraph);
|
|
const thenFunction =
|
|
fakeMap !== 9
|
|
? `${arrow ? "id =>" : "function(id)"} {
|
|
${this.getReturnModuleObjectSource(fakeMap)};
|
|
}`
|
|
: "__webpack_require__";
|
|
|
|
return `var map = ${JSON.stringify(map, null, "\t")};
|
|
${this.getFakeMapInitStatement(fakeMap)}
|
|
|
|
function webpackAsyncContext(req) {
|
|
return webpackAsyncContextResolve(req).then(${thenFunction});
|
|
}
|
|
function webpackAsyncContextResolve(req) {
|
|
return ${promise}.then(${arrow ? "() =>" : "function()"} {
|
|
if(!${RuntimeGlobals.hasOwnProperty}(map, req)) {
|
|
var e = new Error("Cannot find module '" + req + "'");
|
|
e.code = 'MODULE_NOT_FOUND';
|
|
throw e;
|
|
}
|
|
return map[req];
|
|
});
|
|
}
|
|
webpackAsyncContext.keys = ${runtimeTemplate.returningFunction(
|
|
"Object.keys(map)"
|
|
)};
|
|
webpackAsyncContext.resolve = webpackAsyncContextResolve;
|
|
webpackAsyncContext.id = ${JSON.stringify(id)};
|
|
module.exports = webpackAsyncContext;`;
|
|
}
|
|
|
|
/**
|
|
* @param {TODO} blocks TODO
|
|
* @param {TODO} id TODO
|
|
* @param {Object} context context
|
|
* @param {ChunkGraph} context.chunkGraph the chunk graph
|
|
* @param {RuntimeTemplate} context.runtimeTemplate the chunk graph
|
|
* @returns {string} source code
|
|
*/
|
|
getLazySource(blocks, id, { chunkGraph, runtimeTemplate }) {
|
|
const moduleGraph = chunkGraph.moduleGraph;
|
|
const arrow = runtimeTemplate.supportsArrowFunction();
|
|
let hasMultipleOrNoChunks = false;
|
|
let hasNoChunk = true;
|
|
const fakeMap = this.getFakeMap(
|
|
blocks.map(b => b.dependencies[0]),
|
|
chunkGraph
|
|
);
|
|
const hasFakeMap = typeof fakeMap === "object";
|
|
const items = blocks
|
|
.map(block => {
|
|
const dependency = block.dependencies[0];
|
|
return {
|
|
dependency: dependency,
|
|
module: moduleGraph.getModule(dependency),
|
|
block: block,
|
|
userRequest: dependency.userRequest,
|
|
chunks: undefined
|
|
};
|
|
})
|
|
.filter(item => item.module);
|
|
for (const item of items) {
|
|
const chunkGroup = chunkGraph.getBlockChunkGroup(item.block);
|
|
const chunks = (chunkGroup && chunkGroup.chunks) || [];
|
|
item.chunks = chunks;
|
|
if (chunks.length > 0) {
|
|
hasNoChunk = false;
|
|
}
|
|
if (chunks.length !== 1) {
|
|
hasMultipleOrNoChunks = true;
|
|
}
|
|
}
|
|
const shortMode = hasNoChunk && !hasFakeMap;
|
|
const sortedItems = items.sort((a, b) => {
|
|
if (a.userRequest === b.userRequest) return 0;
|
|
return a.userRequest < b.userRequest ? -1 : 1;
|
|
});
|
|
const map = Object.create(null);
|
|
for (const item of sortedItems) {
|
|
const moduleId = chunkGraph.getModuleId(item.module);
|
|
if (shortMode) {
|
|
map[item.userRequest] = moduleId;
|
|
} else {
|
|
const arrayStart = [moduleId];
|
|
if (hasFakeMap) {
|
|
arrayStart.push(fakeMap[moduleId]);
|
|
}
|
|
map[item.userRequest] = arrayStart.concat(
|
|
item.chunks.map(chunk => chunk.id)
|
|
);
|
|
}
|
|
}
|
|
|
|
const chunksStartPosition = hasFakeMap ? 2 : 1;
|
|
const requestPrefix = hasNoChunk
|
|
? "Promise.resolve()"
|
|
: hasMultipleOrNoChunks
|
|
? `Promise.all(ids.slice(${chunksStartPosition}).map(${RuntimeGlobals.ensureChunk}))`
|
|
: `${RuntimeGlobals.ensureChunk}(ids[${chunksStartPosition}])`;
|
|
const returnModuleObject = this.getReturnModuleObjectSource(
|
|
fakeMap,
|
|
shortMode ? "invalid" : "ids[1]"
|
|
);
|
|
|
|
const webpackAsyncContext =
|
|
requestPrefix === "Promise.resolve()"
|
|
? `${shortMode ? "" : ""}
|
|
function webpackAsyncContext(req) {
|
|
return Promise.resolve().then(${arrow ? "() =>" : "function()"} {
|
|
if(!${RuntimeGlobals.hasOwnProperty}(map, req)) {
|
|
var e = new Error("Cannot find module '" + req + "'");
|
|
e.code = 'MODULE_NOT_FOUND';
|
|
throw e;
|
|
}
|
|
|
|
${shortMode ? "var id = map[req];" : "var ids = map[req], id = ids[0];"}
|
|
${returnModuleObject}
|
|
});
|
|
}`
|
|
: `function webpackAsyncContext(req) {
|
|
if(!${RuntimeGlobals.hasOwnProperty}(map, req)) {
|
|
return Promise.resolve().then(${arrow ? "() =>" : "function()"} {
|
|
var e = new Error("Cannot find module '" + req + "'");
|
|
e.code = 'MODULE_NOT_FOUND';
|
|
throw e;
|
|
});
|
|
}
|
|
|
|
var ids = map[req], id = ids[0];
|
|
return ${requestPrefix}.then(${arrow ? "() =>" : "function()"} {
|
|
${returnModuleObject}
|
|
});
|
|
}`;
|
|
|
|
return `var map = ${JSON.stringify(map, null, "\t")};
|
|
${webpackAsyncContext}
|
|
webpackAsyncContext.keys = ${runtimeTemplate.returningFunction(
|
|
"Object.keys(map)"
|
|
)};
|
|
webpackAsyncContext.id = ${JSON.stringify(id)};
|
|
module.exports = webpackAsyncContext;`;
|
|
}
|
|
|
|
getSourceForEmptyContext(id, runtimeTemplate) {
|
|
return `function webpackEmptyContext(req) {
|
|
var e = new Error("Cannot find module '" + req + "'");
|
|
e.code = 'MODULE_NOT_FOUND';
|
|
throw e;
|
|
}
|
|
webpackEmptyContext.keys = ${runtimeTemplate.returningFunction("[]")};
|
|
webpackEmptyContext.resolve = webpackEmptyContext;
|
|
webpackEmptyContext.id = ${JSON.stringify(id)};
|
|
module.exports = webpackEmptyContext;`;
|
|
}
|
|
|
|
getSourceForEmptyAsyncContext(id, runtimeTemplate) {
|
|
const arrow = runtimeTemplate.supportsArrowFunction();
|
|
return `function webpackEmptyAsyncContext(req) {
|
|
// Here Promise.resolve().then() is used instead of new Promise() to prevent
|
|
// uncaught exception popping up in devtools
|
|
return Promise.resolve().then(${arrow ? "() =>" : "function()"} {
|
|
var e = new Error("Cannot find module '" + req + "'");
|
|
e.code = 'MODULE_NOT_FOUND';
|
|
throw e;
|
|
});
|
|
}
|
|
webpackEmptyAsyncContext.keys = ${runtimeTemplate.returningFunction("[]")};
|
|
webpackEmptyAsyncContext.resolve = webpackEmptyAsyncContext;
|
|
webpackEmptyAsyncContext.id = ${JSON.stringify(id)};
|
|
module.exports = webpackEmptyAsyncContext;`;
|
|
}
|
|
|
|
/**
|
|
* @param {string} asyncMode module mode
|
|
* @param {CodeGenerationContext} context context info
|
|
* @returns {string} the source code
|
|
*/
|
|
getSourceString(asyncMode, { runtimeTemplate, chunkGraph }) {
|
|
const id = chunkGraph.getModuleId(this);
|
|
if (asyncMode === "lazy") {
|
|
if (this.blocks && this.blocks.length > 0) {
|
|
return this.getLazySource(this.blocks, id, {
|
|
runtimeTemplate,
|
|
chunkGraph
|
|
});
|
|
}
|
|
return this.getSourceForEmptyAsyncContext(id, runtimeTemplate);
|
|
}
|
|
if (asyncMode === "eager") {
|
|
if (this.dependencies && this.dependencies.length > 0) {
|
|
return this.getEagerSource(this.dependencies, id, {
|
|
chunkGraph,
|
|
runtimeTemplate
|
|
});
|
|
}
|
|
return this.getSourceForEmptyAsyncContext(id, runtimeTemplate);
|
|
}
|
|
if (asyncMode === "lazy-once") {
|
|
const block = this.blocks[0];
|
|
if (block) {
|
|
return this.getLazyOnceSource(block, block.dependencies, id, {
|
|
runtimeTemplate,
|
|
chunkGraph
|
|
});
|
|
}
|
|
return this.getSourceForEmptyAsyncContext(id, runtimeTemplate);
|
|
}
|
|
if (asyncMode === "async-weak") {
|
|
if (this.dependencies && this.dependencies.length > 0) {
|
|
return this.getAsyncWeakSource(this.dependencies, id, {
|
|
chunkGraph,
|
|
runtimeTemplate
|
|
});
|
|
}
|
|
return this.getSourceForEmptyAsyncContext(id, runtimeTemplate);
|
|
}
|
|
if (asyncMode === "weak") {
|
|
if (this.dependencies && this.dependencies.length > 0) {
|
|
return this.getWeakSyncSource(this.dependencies, id, chunkGraph);
|
|
}
|
|
}
|
|
if (this.dependencies && this.dependencies.length > 0) {
|
|
return this.getSyncSource(this.dependencies, id, chunkGraph);
|
|
}
|
|
return this.getSourceForEmptyContext(id, runtimeTemplate);
|
|
}
|
|
|
|
getSource(sourceString) {
|
|
if (this.useSourceMap) {
|
|
return new OriginalSource(sourceString, this.identifier());
|
|
}
|
|
return new RawSource(sourceString);
|
|
}
|
|
|
|
/**
|
|
* @param {CodeGenerationContext} context context for code generation
|
|
* @returns {CodeGenerationResult} result
|
|
*/
|
|
codeGeneration(context) {
|
|
const { chunkGraph } = context;
|
|
const sources = new Map();
|
|
sources.set(
|
|
"javascript",
|
|
this.getSource(this.getSourceString(this.options.mode, context))
|
|
);
|
|
const set = new Set();
|
|
const allDeps = /** @type {ContextElementDependency[]} */ (this.dependencies.concat(
|
|
this.blocks.map(b => b.dependencies[0])
|
|
));
|
|
set.add(RuntimeGlobals.module);
|
|
set.add(RuntimeGlobals.hasOwnProperty);
|
|
if (allDeps.length > 0) {
|
|
const asyncMode = this.options.mode;
|
|
set.add(RuntimeGlobals.require);
|
|
if (asyncMode === "weak") {
|
|
set.add(RuntimeGlobals.moduleFactories);
|
|
} else if (asyncMode === "async-weak") {
|
|
set.add(RuntimeGlobals.moduleFactories);
|
|
set.add(RuntimeGlobals.ensureChunk);
|
|
} else if (asyncMode === "lazy" || asyncMode === "lazy-once") {
|
|
set.add(RuntimeGlobals.ensureChunk);
|
|
}
|
|
if (this.getFakeMap(allDeps, chunkGraph) !== 9) {
|
|
set.add(RuntimeGlobals.createFakeNamespaceObject);
|
|
}
|
|
}
|
|
return {
|
|
sources,
|
|
runtimeRequirements: set
|
|
};
|
|
}
|
|
|
|
/**
|
|
* @param {string=} type the source type for which the size should be estimated
|
|
* @returns {number} the estimated size of the module (must be non-zero)
|
|
*/
|
|
size(type) {
|
|
// base penalty
|
|
let size = 160;
|
|
|
|
// if we dont have dependencies we stop here.
|
|
for (const dependency of this.dependencies) {
|
|
const element = /** @type {ContextElementDependency} */ (dependency);
|
|
size += 5 + element.userRequest.length;
|
|
}
|
|
return size;
|
|
}
|
|
|
|
serialize(context) {
|
|
const { write } = context;
|
|
// constructor
|
|
write(this.options);
|
|
// deserialize
|
|
write(this._forceBuild);
|
|
super.serialize(context);
|
|
}
|
|
|
|
static deserialize(context) {
|
|
const { read } = context;
|
|
const obj = new ContextModule(null, read());
|
|
obj.deserialize(context);
|
|
return obj;
|
|
}
|
|
|
|
deserialize(context) {
|
|
const { read } = context;
|
|
this._forceBuild = read();
|
|
super.deserialize(context);
|
|
}
|
|
}
|
|
|
|
makeSerializable(ContextModule, "webpack/lib/ContextModule");
|
|
|
|
module.exports = ContextModule;
|