mirror of https://github.com/webpack/webpack.git
391 lines
11 KiB
JavaScript
391 lines
11 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 { AsyncSeriesWaterfallHook, SyncWaterfallHook } = require("tapable");
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const ContextModule = require("./ContextModule");
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const ModuleFactory = require("./ModuleFactory");
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const ContextElementDependency = require("./dependencies/ContextElementDependency");
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const { cachedSetProperty } = require("./util/cleverMerge");
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const { createFakeHook } = require("./util/deprecation");
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const { join } = require("./util/fs");
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/** @typedef {import("./ContextModule").ContextModuleOptions} ContextModuleOptions */
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/** @typedef {import("./ContextModule").ResolveDependenciesCallback} ResolveDependenciesCallback */
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/** @typedef {import("./Module")} Module */
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/** @typedef {import("./ModuleFactory").ModuleFactoryCreateData} ModuleFactoryCreateData */
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/** @typedef {import("./ModuleFactory").ModuleFactoryResult} ModuleFactoryResult */
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/** @typedef {import("./ResolverFactory")} ResolverFactory */
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/** @typedef {import("./dependencies/ContextDependency")} ContextDependency */
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/** @template T @typedef {import("./util/deprecation").FakeHook<T>} FakeHook<T> */
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/** @typedef {import("./util/fs").InputFileSystem} InputFileSystem */
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const EMPTY_RESOLVE_OPTIONS = {};
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module.exports = class ContextModuleFactory extends ModuleFactory {
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/**
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* @param {ResolverFactory} resolverFactory resolverFactory
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*/
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constructor(resolverFactory) {
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super();
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/** @type {AsyncSeriesWaterfallHook<[TODO[], ContextModuleOptions]>} */
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const alternativeRequests = new AsyncSeriesWaterfallHook([
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"modules",
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"options"
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]);
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this.hooks = Object.freeze({
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/** @type {AsyncSeriesWaterfallHook<[TODO]>} */
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beforeResolve: new AsyncSeriesWaterfallHook(["data"]),
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/** @type {AsyncSeriesWaterfallHook<[TODO]>} */
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afterResolve: new AsyncSeriesWaterfallHook(["data"]),
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/** @type {SyncWaterfallHook<[string[]]>} */
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contextModuleFiles: new SyncWaterfallHook(["files"]),
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/** @type {FakeHook<Pick<AsyncSeriesWaterfallHook<[TODO[]]>, "tap" | "tapAsync" | "tapPromise" | "name">>} */
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alternatives: createFakeHook(
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{
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name: "alternatives",
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/** @type {AsyncSeriesWaterfallHook<[TODO[]]>["intercept"]} */
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intercept: interceptor => {
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throw new Error(
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"Intercepting fake hook ContextModuleFactory.hooks.alternatives is not possible, use ContextModuleFactory.hooks.alternativeRequests instead"
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);
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},
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/** @type {AsyncSeriesWaterfallHook<[TODO[]]>["tap"]} */
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tap: (options, fn) => {
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alternativeRequests.tap(options, fn);
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},
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/** @type {AsyncSeriesWaterfallHook<[TODO[]]>["tapAsync"]} */
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tapAsync: (options, fn) => {
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alternativeRequests.tapAsync(options, (items, _options, callback) =>
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fn(items, callback)
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);
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},
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/** @type {AsyncSeriesWaterfallHook<[TODO[]]>["tapPromise"]} */
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tapPromise: (options, fn) => {
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alternativeRequests.tapPromise(options, fn);
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}
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},
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"ContextModuleFactory.hooks.alternatives has deprecated in favor of ContextModuleFactory.hooks.alternativeRequests with an additional options argument.",
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"DEP_WEBPACK_CONTEXT_MODULE_FACTORY_ALTERNATIVES"
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),
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alternativeRequests
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});
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this.resolverFactory = resolverFactory;
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}
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/**
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* @param {ModuleFactoryCreateData} data data object
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* @param {function(Error=, ModuleFactoryResult=): void} callback callback
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* @returns {void}
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*/
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create(data, callback) {
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const context = data.context;
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const dependencies = data.dependencies;
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const resolveOptions = data.resolveOptions;
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const dependency = /** @type {ContextDependency} */ (dependencies[0]);
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const fileDependencies = new Set();
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const missingDependencies = new Set();
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const contextDependencies = new Set();
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this.hooks.beforeResolve.callAsync(
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{
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context: context,
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dependencies: dependencies,
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resolveOptions,
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fileDependencies,
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missingDependencies,
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contextDependencies,
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...dependency.options
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},
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(err, beforeResolveResult) => {
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if (err) {
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return callback(err, {
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fileDependencies,
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missingDependencies,
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contextDependencies
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});
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}
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// Ignored
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if (!beforeResolveResult) {
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return callback(null, {
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fileDependencies,
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missingDependencies,
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contextDependencies
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});
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}
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const context = beforeResolveResult.context;
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const request = beforeResolveResult.request;
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const resolveOptions = beforeResolveResult.resolveOptions;
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let loaders,
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resource,
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loadersPrefix = "";
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const idx = request.lastIndexOf("!");
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if (idx >= 0) {
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let loadersRequest = request.substr(0, idx + 1);
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let i;
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for (
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i = 0;
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i < loadersRequest.length && loadersRequest[i] === "!";
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i++
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) {
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loadersPrefix += "!";
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}
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loadersRequest = loadersRequest
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.substr(i)
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.replace(/!+$/, "")
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.replace(/!!+/g, "!");
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if (loadersRequest === "") {
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loaders = [];
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} else {
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loaders = loadersRequest.split("!");
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}
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resource = request.substr(idx + 1);
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} else {
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loaders = [];
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resource = request;
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}
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const contextResolver = this.resolverFactory.get(
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"context",
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dependencies.length > 0
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? cachedSetProperty(
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resolveOptions || EMPTY_RESOLVE_OPTIONS,
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"dependencyType",
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dependencies[0].category
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)
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: resolveOptions
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);
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const loaderResolver = this.resolverFactory.get("loader");
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asyncLib.parallel(
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[
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callback => {
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contextResolver.resolve(
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{},
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context,
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resource,
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{
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fileDependencies,
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missingDependencies,
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contextDependencies
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},
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(err, result) => {
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if (err) return callback(err);
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callback(null, result);
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}
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);
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},
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callback => {
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asyncLib.map(
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loaders,
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(loader, callback) => {
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loaderResolver.resolve(
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{},
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context,
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loader,
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{
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fileDependencies,
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missingDependencies,
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contextDependencies
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},
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(err, result) => {
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if (err) return callback(err);
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callback(null, result);
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}
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);
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},
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callback
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);
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}
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],
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(err, result) => {
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if (err) {
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return callback(err, {
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fileDependencies,
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missingDependencies,
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contextDependencies
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});
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}
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this.hooks.afterResolve.callAsync(
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{
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addon:
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loadersPrefix +
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result[1].join("!") +
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(result[1].length > 0 ? "!" : ""),
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resource: result[0],
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resolveDependencies: this.resolveDependencies.bind(this),
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...beforeResolveResult
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},
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(err, result) => {
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if (err) {
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return callback(err, {
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fileDependencies,
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missingDependencies,
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contextDependencies
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});
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}
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// Ignored
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if (!result) {
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return callback(null, {
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fileDependencies,
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missingDependencies,
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contextDependencies
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});
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}
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return callback(null, {
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module: new ContextModule(result.resolveDependencies, result),
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fileDependencies,
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missingDependencies,
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contextDependencies
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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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);
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}
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/**
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* @param {InputFileSystem} fs file system
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* @param {ContextModuleOptions} options options
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* @param {ResolveDependenciesCallback} callback callback function
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* @returns {void}
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*/
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resolveDependencies(fs, options, callback) {
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const cmf = this;
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const {
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resource,
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resourceQuery,
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resourceFragment,
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recursive,
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regExp,
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include,
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exclude,
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referencedExports,
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category
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} = options;
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if (!regExp || !resource) return callback(null, []);
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const addDirectoryChecked = (directory, visited, callback) => {
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fs.realpath(directory, (err, realPath) => {
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if (err) return callback(err);
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if (visited.has(realPath)) return callback(null, []);
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let recursionStack;
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addDirectory(
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directory,
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(dir, callback) => {
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if (recursionStack === undefined) {
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recursionStack = new Set(visited);
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recursionStack.add(realPath);
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}
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addDirectoryChecked(dir, recursionStack, callback);
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},
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callback
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);
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});
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};
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const addDirectory = (directory, addSubDirectory, callback) => {
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fs.readdir(directory, (err, files) => {
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if (err) return callback(err);
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const processedFiles = cmf.hooks.contextModuleFiles.call(
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/** @type {string[]} */ (files).map(file => file.normalize("NFC"))
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);
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if (!processedFiles || processedFiles.length === 0)
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return callback(null, []);
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asyncLib.map(
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processedFiles.filter(p => p.indexOf(".") !== 0),
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(segment, callback) => {
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const subResource = join(fs, directory, segment);
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if (!exclude || !subResource.match(exclude)) {
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fs.stat(subResource, (err, stat) => {
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if (err) {
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if (err.code === "ENOENT") {
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// ENOENT is ok here because the file may have been deleted between
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// the readdir and stat calls.
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return callback();
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} else {
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return callback(err);
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}
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}
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if (stat.isDirectory()) {
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if (!recursive) return callback();
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addSubDirectory(subResource, callback);
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} else if (
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stat.isFile() &&
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(!include || subResource.match(include))
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) {
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const obj = {
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context: resource,
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request:
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"." +
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subResource.substr(resource.length).replace(/\\/g, "/")
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};
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this.hooks.alternativeRequests.callAsync(
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[obj],
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options,
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(err, alternatives) => {
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if (err) return callback(err);
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alternatives = alternatives
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.filter(obj => regExp.test(obj.request))
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.map(obj => {
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const dep = new ContextElementDependency(
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obj.request + resourceQuery + resourceFragment,
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obj.request,
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category,
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referencedExports
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);
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dep.optional = true;
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return dep;
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});
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callback(null, alternatives);
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}
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);
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} else {
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callback();
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}
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});
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} else {
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callback();
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}
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},
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(err, result) => {
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if (err) return callback(err);
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if (!result) return callback(null, []);
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const flattenedResult = [];
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for (const item of result) {
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if (item) flattenedResult.push(...item);
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}
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callback(null, flattenedResult);
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}
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);
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});
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};
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if (typeof fs.realpath === "function") {
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addDirectoryChecked(resource, new Set(), callback);
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} else {
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const addSubDirectory = (dir, callback) =>
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addDirectory(dir, addSubDirectory, callback);
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addDirectory(resource, addSubDirectory, callback);
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}
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}
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};
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