660 lines
21 KiB
JavaScript
660 lines
21 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 path = require("path");
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const util = require("util");
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const Module = require("./Module");
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const OriginalSource = require("webpack-sources").OriginalSource;
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const RawSource = require("webpack-sources").RawSource;
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const AsyncDependenciesBlock = require("./AsyncDependenciesBlock");
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const Template = require("./Template");
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class ContextModule extends Module {
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// type ContextMode = "sync" | "eager" | "weak" | "async-weak" | "lazy" | "lazy-once"
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// type ContextOptions = { resource: string, recursive: boolean, regExp: RegExp, addon?: string, mode?: ContextMode, chunkName?: string, include?: RegExp, exclude?: RegExp }
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// resolveDependencies: (fs: FS, options: ContextOptions, (err: Error?, dependencies: Dependency[]) => void) => void
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// options: ContextOptions
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constructor(resolveDependencies, options) {
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let resource;
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let resourceQuery;
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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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super("javascript/dynamic", resource);
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// Info from Factory
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this.resolveDependencies = resolveDependencies;
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this.options = Object.assign({}, options, {
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resource: resource,
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resourceQuery: resourceQuery
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});
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if(options.resolveOptions !== undefined)
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this.resolveOptions = options.resolveOptions;
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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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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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contextify(context, request) {
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return request.split("!").map(subrequest => {
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let rp = path.relative(context, subrequest);
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if(path.sep === "\\")
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rp = rp.replace(/\\/g, "/");
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if(rp.indexOf("../") !== 0)
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rp = "./" + rp;
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return rp;
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}).join("!");
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}
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identifier() {
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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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if(this.options.mode)
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identifier += ` ${this.options.mode}`;
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if(!this.options.recursive)
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identifier += " nonrecursive";
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if(this.options.addon)
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identifier += ` ${this.options.addon}`;
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if(this.options.regExp)
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identifier += ` ${this.options.regExp}`;
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if(this.options.include)
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identifier += ` include: ${this.options.include}`;
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if(this.options.exclude)
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identifier += ` exclude: ${this.options.exclude}`;
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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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return identifier;
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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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if(this.options.mode)
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identifier += ` ${this.options.mode}`;
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if(!this.options.recursive)
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identifier += " nonrecursive";
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if(this.options.addon)
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identifier += ` ${requestShortener.shorten(this.options.addon)}`;
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if(this.options.regExp)
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identifier += ` ${this.prettyRegExp(this.options.regExp + "")}`;
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if(this.options.include)
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identifier += ` include: ${this.prettyRegExp(this.options.include + "")}`;
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if(this.options.exclude)
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identifier += ` exclude: ${this.prettyRegExp(this.options.exclude + "")}`;
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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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return identifier;
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}
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libIdent(options) {
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let identifier = this.contextify(options.context, this.context);
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if(this.options.mode)
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identifier += ` ${this.options.mode}`;
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if(this.options.recursive)
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identifier += " recursive";
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if(this.options.addon)
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identifier += ` ${this.contextify(options.context, this.options.addon)}`;
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if(this.options.regExp)
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identifier += ` ${this.prettyRegExp(this.options.regExp + "")}`;
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if(this.options.include)
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identifier += ` include: ${this.prettyRegExp(this.options.include + "")}`;
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if(this.options.exclude)
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identifier += ` exclude: ${this.prettyRegExp(this.options.exclude + "")}`;
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return identifier;
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}
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needRebuild(fileTimestamps, contextTimestamps) {
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const ts = contextTimestamps.get(this.context);
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if(!ts) {
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return true;
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}
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return ts >= this.buildInfo.builtTime;
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}
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build(options, compilation, resolver, fs, callback) {
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this.built = true;
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this.buildMeta = {};
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this.buildInfo = {
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builtTime: Date.now(),
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contextDependencies: this._contextDependencies
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};
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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 = dep.userRequest;
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dep.request = this.options.addon + dep.request;
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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(this.options.chunkName, this);
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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(this.options.mode === "weak" || this.options.mode === "async-weak") {
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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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chunkName = chunkName.replace(/\[index\]/g, index++);
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chunkName = chunkName.replace(/\[request\]/g, Template.toPath(dep.userRequest));
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}
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const block = new AsyncDependenciesBlock(chunkName, dep.module, dep.loc, dep.userRequest);
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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(new Error(`Unsupported mode "${this.options.mode}" in context`));
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return;
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}
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callback();
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});
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}
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getUserRequestMap(dependencies) {
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// if we filter first we get a new array
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// therefor 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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return dependencies
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.filter(dependency => dependency.module)
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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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}).reduce((map, dep) => {
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map[dep.userRequest] = dep.module.id;
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return map;
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}, Object.create(null));
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}
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getFakeMap(dependencies) {
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if(!this.options.namespaceObject) return 1;
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// if we filter first we get a new array
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// therefor 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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let hasNonHarmony = false;
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let hasNamespace = false;
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let hasNamed = false;
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const fakeMap = dependencies
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.filter(dependency => dependency.module)
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.sort((a, b) => {
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return b.module.id - a.module.id;
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}).reduce((map, dep) => {
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const exportsType = dep.module.buildMeta && dep.module.buildMeta.exportsType;
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if(!exportsType) hasNonHarmony = true;
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if(exportsType === "namespace") hasNamespace = true;
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if(exportsType === "named") hasNamed = true;
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map[dep.module.id] = {
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namespace: 1,
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named: 2
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}[exportsType] || 0;
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return map;
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}, Object.create(null));
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if(!hasNamespace && hasNonHarmony && !hasNamed) return 0;
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if(hasNamespace && !hasNonHarmony && !hasNamed) return 1;
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if(!hasNamespace && !hasNonHarmony && hasNamed) return 2;
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if(!hasNamespace && !hasNonHarmony && !hasNamed) return 1;
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return fakeMap;
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}
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getFakeMapInitStatement(fakeMap) {
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return typeof fakeMap === "object" ? `var fakeMap = ${JSON.stringify(fakeMap, null, "\t")};` : "";
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}
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getReturn(type) {
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if(type === 1) return "module";
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if(type === 2) return "Object.assign({/* fake namespace object */}, module, { \"default\": module })";
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if(type === 0) {
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if(this.options.namespaceObject === "strict") {
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return "/* fake namespace object */ { \"default\": module }";
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} else {
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return "(typeof module === \"object\" && module && module.__esModule ? module : /* fake namespace object */ { \"default\": module })";
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}
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}
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}
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getReturnModuleObjectSource(fakeMap, fakeMapDataExpression = "fakeMap[id]") {
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if(typeof fakeMap === "number") return `return ${this.getReturn(fakeMap)};`;
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return `return ${fakeMapDataExpression} === 1 ? ${this.getReturn(1)} : ${fakeMapDataExpression} ? ${this.getReturn(2)} : ${this.getReturn(0)};`;
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}
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getSyncSource(dependencies, id) {
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const map = this.getUserRequestMap(dependencies);
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const fakeMap = this.getFakeMap(dependencies);
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const returnModuleObject = this.getReturnModuleObjectSource(fakeMap);
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return `var map = ${JSON.stringify(map, null, "\t")};
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${this.getFakeMapInitStatement(fakeMap)}
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function webpackContext(req) {
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var id = webpackContextResolve(req);
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var module = __webpack_require__(id);
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${returnModuleObject}
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}
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function webpackContextResolve(req) {
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var id = map[req];
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if(!(id + 1)) { // check for number or string
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var e = new Error('Cannot find module "' + req + '".');
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e.code = 'MODULE_NOT_FOUND';
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throw e;
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}
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return id;
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}
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webpackContext.keys = function webpackContextKeys() {
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return Object.keys(map);
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};
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webpackContext.resolve = webpackContextResolve;
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module.exports = webpackContext;
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webpackContext.id = ${JSON.stringify(id)};`;
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}
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getWeakSyncSource(dependencies, id) {
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const map = this.getUserRequestMap(dependencies);
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const fakeMap = this.getFakeMap(dependencies);
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const returnModuleObject = this.getReturnModuleObjectSource(fakeMap);
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return `var map = ${JSON.stringify(map, null, "\t")};
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${this.getFakeMapInitStatement(fakeMap)}
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function webpackContext(req) {
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var id = webpackContextResolve(req);
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if(!__webpack_require__.m[id]) {
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var e = new Error("Module '" + req + "' ('" + id + "') is not available (weak dependency)");
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e.code = 'MODULE_NOT_FOUND';
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throw e;
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}
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var module = __webpack_require__(id);
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${returnModuleObject}
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}
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function webpackContextResolve(req) {
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var id = map[req];
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if(!(id + 1)) { // check for number or string
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var e = new Error('Cannot find module "' + req + '".');
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e.code = 'MODULE_NOT_FOUND';
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throw e;
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}
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return id;
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}
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webpackContext.keys = function webpackContextKeys() {
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return Object.keys(map);
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};
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webpackContext.resolve = webpackContextResolve;
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webpackContext.id = ${JSON.stringify(id)};
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module.exports = webpackContext;`;
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}
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getAsyncWeakSource(dependencies, id) {
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const map = this.getUserRequestMap(dependencies);
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const fakeMap = this.getFakeMap(dependencies);
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const returnModuleObject = this.getReturnModuleObjectSource(fakeMap);
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return `var map = ${JSON.stringify(map, null, "\t")};
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${this.getFakeMapInitStatement(fakeMap)}
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function webpackAsyncContext(req) {
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return webpackAsyncContextResolve(req).then(function(id) {
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if(!__webpack_require__.m[id]) {
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var e = new Error("Module '" + req + "' ('" + id + "') is not available (weak dependency)");
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e.code = 'MODULE_NOT_FOUND';
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throw e;
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}
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var module = __webpack_require__(id);
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${returnModuleObject}
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});
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}
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function webpackAsyncContextResolve(req) {
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// Here Promise.resolve().then() is used instead of new Promise() to prevent
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// uncatched exception popping up in devtools
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return Promise.resolve().then(function() {
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var id = map[req];
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if(!(id + 1)) { // check for number or string
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var e = new Error('Cannot find module "' + req + '".');
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e.code = 'MODULE_NOT_FOUND';
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throw e;
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}
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return id;
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});
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}
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webpackAsyncContext.keys = function webpackAsyncContextKeys() {
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return Object.keys(map);
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};
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webpackAsyncContext.resolve = webpackAsyncContextResolve;
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webpackAsyncContext.id = ${JSON.stringify(id)};
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module.exports = webpackAsyncContext;`;
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}
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getEagerSource(dependencies, id) {
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const map = this.getUserRequestMap(dependencies);
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const fakeMap = this.getFakeMap(dependencies);
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const thenFunction = fakeMap !== 1 ?
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`function(id) {
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var module = __webpack_require__(id);
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${this.getReturnModuleObjectSource(fakeMap)}
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}` :
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"__webpack_require__";
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return `var map = ${JSON.stringify(map, null, "\t")};
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${this.getFakeMapInitStatement(fakeMap)}
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function webpackAsyncContext(req) {
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return webpackAsyncContextResolve(req).then(${thenFunction});
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}
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function webpackAsyncContextResolve(req) {
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// Here Promise.resolve().then() is used instead of new Promise() to prevent
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// uncatched exception popping up in devtools
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return Promise.resolve().then(function() {
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var id = map[req];
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if(!(id + 1)) { // check for number or string
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var e = new Error('Cannot find module "' + req + '".');
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e.code = 'MODULE_NOT_FOUND';
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throw e;
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}
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return id;
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});
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}
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webpackAsyncContext.keys = function webpackAsyncContextKeys() {
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return Object.keys(map);
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};
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webpackAsyncContext.resolve = webpackAsyncContextResolve;
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webpackAsyncContext.id = ${JSON.stringify(id)};
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module.exports = webpackAsyncContext;`;
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}
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getLazyOnceSource(block, dependencies, id, runtimeTemplate) {
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const promise = runtimeTemplate.blockPromise({
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block,
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message: "lazy-once context"
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});
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const map = this.getUserRequestMap(dependencies);
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const fakeMap = this.getFakeMap(dependencies);
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const thenFunction = fakeMap !== 1 ?
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`function(id) {
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var module = __webpack_require__(id);
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${this.getReturnModuleObjectSource(fakeMap)};
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}` :
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"__webpack_require__";
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return `var map = ${JSON.stringify(map, null, "\t")};
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${this.getFakeMapInitStatement(fakeMap)}
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function webpackAsyncContext(req) {
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return webpackAsyncContextResolve(req).then(${thenFunction});
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}
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function webpackAsyncContextResolve(req) {
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return ${promise}.then(function() {
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var id = map[req];
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if(!(id + 1)) { // check for number or string
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var e = new Error('Cannot find module "' + req + '".');
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e.code = 'MODULE_NOT_FOUND';
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throw e;
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}
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return id;
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});
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}
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webpackAsyncContext.keys = function webpackAsyncContextKeys() {
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return Object.keys(map);
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};
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webpackAsyncContext.resolve = webpackAsyncContextResolve;
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webpackAsyncContext.id = ${JSON.stringify(id)};
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module.exports = webpackAsyncContext;`;
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}
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getLazySource(blocks, id) {
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let hasMultipleOrNoChunks = false;
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const fakeMap = this.getFakeMap(blocks.map(b => b.dependencies[0]));
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const map = blocks
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.filter(block => block.dependencies[0].module)
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.map((block) => ({
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dependency: block.dependencies[0],
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block: block,
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userRequest: block.dependencies[0].userRequest
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})).sort((a, b) => {
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if(a.userRequest === b.userRequest) return 0;
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return a.userRequest < b.userRequest ? -1 : 1;
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}).reduce((map, item) => {
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const chunks = item.block.chunkGroup && item.block.chunkGroup.chunks || [];
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if(chunks.length !== 1) {
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hasMultipleOrNoChunks = true;
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}
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const arrayStart = [item.dependency.module.id];
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if(typeof fakeMap === "object")
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arrayStart.push(fakeMap[item.dependency.module.id]);
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map[item.userRequest] = arrayStart
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.concat(chunks.map(chunk => chunk.id));
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return map;
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}, Object.create(null));
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const chunksStartPosition = typeof fakeMap === "object" ? 2 : 1;
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const requestPrefix = hasMultipleOrNoChunks ?
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`Promise.all(ids.slice(${chunksStartPosition}).map(__webpack_require__.e))` :
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`__webpack_require__.e(ids[${chunksStartPosition}])`;
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const returnModuleObject = this.getReturnModuleObjectSource(fakeMap, "ids[1]");
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return `var map = ${JSON.stringify(map, null, "\t")};
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function webpackAsyncContext(req) {
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var ids = map[req];
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if(!ids) {
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return Promise.resolve().then(function() {
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var e = new Error('Cannot find module "' + req + '".');
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e.code = 'MODULE_NOT_FOUND';
|
|
throw e;
|
|
});
|
|
}
|
|
return ${requestPrefix}.then(function() {
|
|
var module = __webpack_require__(ids[0]);
|
|
${returnModuleObject}
|
|
});
|
|
}
|
|
webpackAsyncContext.keys = function webpackAsyncContextKeys() {
|
|
return Object.keys(map);
|
|
};
|
|
webpackAsyncContext.id = ${JSON.stringify(id)};
|
|
module.exports = webpackAsyncContext;`;
|
|
}
|
|
|
|
getSourceForEmptyContext(id) {
|
|
return `function webpackEmptyContext(req) {
|
|
var e = new Error('Cannot find module "' + req + '".');
|
|
e.code = 'MODULE_NOT_FOUND';
|
|
throw e;
|
|
}
|
|
webpackEmptyContext.keys = function() { return []; };
|
|
webpackEmptyContext.resolve = webpackEmptyContext;
|
|
module.exports = webpackEmptyContext;
|
|
webpackEmptyContext.id = ${JSON.stringify(id)};`;
|
|
}
|
|
|
|
getSourceForEmptyAsyncContext(id) {
|
|
return `function webpackEmptyAsyncContext(req) {
|
|
// Here Promise.resolve().then() is used instead of new Promise() to prevent
|
|
// uncatched exception popping up in devtools
|
|
return Promise.resolve().then(function() {
|
|
var e = new Error('Cannot find module "' + req + '".');
|
|
e.code = 'MODULE_NOT_FOUND';
|
|
throw e;
|
|
});
|
|
}
|
|
webpackEmptyAsyncContext.keys = function() { return []; };
|
|
webpackEmptyAsyncContext.resolve = webpackEmptyAsyncContext;
|
|
module.exports = webpackEmptyAsyncContext;
|
|
webpackEmptyAsyncContext.id = ${JSON.stringify(id)};`;
|
|
}
|
|
|
|
getSourceString(asyncMode, runtimeTemplate) {
|
|
if(asyncMode === "lazy") {
|
|
if(this.blocks && this.blocks.length > 0) {
|
|
return this.getLazySource(this.blocks, this.id);
|
|
}
|
|
return this.getSourceForEmptyAsyncContext(this.id);
|
|
}
|
|
if(asyncMode === "eager") {
|
|
if(this.dependencies && this.dependencies.length > 0) {
|
|
return this.getEagerSource(this.dependencies, this.id);
|
|
}
|
|
return this.getSourceForEmptyAsyncContext(this.id);
|
|
}
|
|
if(asyncMode === "lazy-once") {
|
|
const block = this.blocks[0];
|
|
if(block) {
|
|
return this.getLazyOnceSource(block, block.dependencies, this.id, runtimeTemplate);
|
|
}
|
|
return this.getSourceForEmptyAsyncContext(this.id);
|
|
}
|
|
if(asyncMode === "async-weak") {
|
|
if(this.dependencies && this.dependencies.length > 0) {
|
|
return this.getAsyncWeakSource(this.dependencies, this.id);
|
|
}
|
|
return this.getSourceForEmptyAsyncContext(this.id);
|
|
}
|
|
if(asyncMode === "weak") {
|
|
if(this.dependencies && this.dependencies.length > 0) {
|
|
return this.getWeakSyncSource(this.dependencies, this.id);
|
|
}
|
|
}
|
|
if(this.dependencies && this.dependencies.length > 0) {
|
|
return this.getSyncSource(this.dependencies, this.id);
|
|
}
|
|
return this.getSourceForEmptyContext(this.id);
|
|
}
|
|
|
|
getSource(sourceString) {
|
|
if(this.useSourceMap) {
|
|
return new OriginalSource(sourceString, this.identifier());
|
|
}
|
|
return new RawSource(sourceString);
|
|
}
|
|
|
|
source(dependencyTemplates, runtimeTemplate) {
|
|
return this.getSource(
|
|
this.getSourceString(this.options.mode, runtimeTemplate)
|
|
);
|
|
}
|
|
|
|
size() {
|
|
// base penalty
|
|
const initialSize = 160;
|
|
|
|
// if we dont have dependencies we stop here.
|
|
return this.dependencies
|
|
.reduce((size, dependency) => size + 5 + dependency.userRequest.length, initialSize);
|
|
}
|
|
}
|
|
|
|
// TODO remove in webpack 5
|
|
Object.defineProperty(ContextModule.prototype, "recursive", {
|
|
configurable: false,
|
|
get: util.deprecate(function() {
|
|
return this.options.recursive;
|
|
}, "ContextModule.recursive has been moved to ContextModule.options.recursive"),
|
|
set: util.deprecate(function(value) {
|
|
this.options.recursive = value;
|
|
}, "ContextModule.recursive has been moved to ContextModule.options.recursive")
|
|
});
|
|
|
|
// TODO remove in webpack 5
|
|
Object.defineProperty(ContextModule.prototype, "regExp", {
|
|
configurable: false,
|
|
get: util.deprecate(function() {
|
|
return this.options.regExp;
|
|
}, "ContextModule.regExp has been moved to ContextModule.options.regExp"),
|
|
set: util.deprecate(function(value) {
|
|
this.options.regExp = value;
|
|
}, "ContextModule.regExp has been moved to ContextModule.options.regExp")
|
|
});
|
|
|
|
// TODO remove in webpack 5
|
|
Object.defineProperty(ContextModule.prototype, "addon", {
|
|
configurable: false,
|
|
get: util.deprecate(function() {
|
|
return this.options.addon;
|
|
}, "ContextModule.addon has been moved to ContextModule.options.addon"),
|
|
set: util.deprecate(function(value) {
|
|
this.options.addon = value;
|
|
}, "ContextModule.addon has been moved to ContextModule.options.addon")
|
|
});
|
|
|
|
// TODO remove in webpack 5
|
|
Object.defineProperty(ContextModule.prototype, "async", {
|
|
configurable: false,
|
|
get: util.deprecate(function() {
|
|
return this.options.mode;
|
|
}, "ContextModule.async has been moved to ContextModule.options.mode"),
|
|
set: util.deprecate(function(value) {
|
|
this.options.mode = value;
|
|
}, "ContextModule.async has been moved to ContextModule.options.mode")
|
|
});
|
|
|
|
// TODO remove in webpack 5
|
|
Object.defineProperty(ContextModule.prototype, "chunkName", {
|
|
configurable: false,
|
|
get: util.deprecate(function() {
|
|
return this.options.chunkName;
|
|
}, "ContextModule.chunkName has been moved to ContextModule.options.chunkName"),
|
|
set: util.deprecate(function(value) {
|
|
this.options.chunkName = value;
|
|
}, "ContextModule.chunkName has been moved to ContextModule.options.chunkName")
|
|
});
|
|
|
|
module.exports = ContextModule;
|