From bbff7403fbf46f9ad92240ac213df8d30ef31b64 Mon Sep 17 00:00:00 2001
From: Florian Dold <florian.dold@gmail.com>
Date: Thu, 20 Sep 2018 02:56:13 +0200
Subject: update packages

---
 node_modules/webpack/lib/ContextModule.js | 1275 +++++++++++++++++++----------
 1 file changed, 844 insertions(+), 431 deletions(-)

(limited to 'node_modules/webpack/lib/ContextModule.js')

diff --git a/node_modules/webpack/lib/ContextModule.js b/node_modules/webpack/lib/ContextModule.js
index a894e6268..78e0e47aa 100644
--- a/node_modules/webpack/lib/ContextModule.js
+++ b/node_modules/webpack/lib/ContextModule.js
@@ -1,431 +1,844 @@
-/*
-	MIT License http://www.opensource.org/licenses/mit-license.php
-	Author Tobias Koppers @sokra
-*/
-"use strict";
-const path = require("path");
-const Module = require("./Module");
-const OriginalSource = require("webpack-sources").OriginalSource;
-const RawSource = require("webpack-sources").RawSource;
-const AsyncDependenciesBlock = require("./AsyncDependenciesBlock");
-const DepBlockHelpers = require("./dependencies/DepBlockHelpers");
-const Template = require("./Template");
-
-class ContextModule extends Module {
-	constructor(resolveDependencies, context, recursive, regExp, addon, asyncMode, chunkName) {
-		super();
-		this.resolveDependencies = resolveDependencies;
-		this.context = context;
-		this.recursive = recursive;
-		this.regExp = regExp;
-		this.addon = addon;
-		this.async = asyncMode;
-		this.cacheable = true;
-		this.contextDependencies = [context];
-		this.built = false;
-		this.chunkName = chunkName;
-	}
-
-	prettyRegExp(regexString) {
-		// remove the "/" at the front and the beginning
-		// "/foo/" -> "foo"
-		return regexString.substring(1, regexString.length - 1);
-	}
-
-	contextify(context, request) {
-		return request.split("!").map(subrequest => {
-			let rp = path.relative(context, subrequest);
-			if(path.sep === "\\")
-				rp = rp.replace(/\\/g, "/");
-			if(rp.indexOf("../") !== 0)
-				rp = "./" + rp;
-			return rp;
-		}).join("!");
-	}
-
-	identifier() {
-		let identifier = this.context;
-		if(this.async)
-			identifier += ` ${this.async}`;
-		if(!this.recursive)
-			identifier += " nonrecursive";
-		if(this.addon)
-			identifier += ` ${this.addon}`;
-		if(this.regExp)
-			identifier += ` ${this.regExp}`;
-
-		return identifier;
-	}
-
-	readableIdentifier(requestShortener) {
-		let identifier = requestShortener.shorten(this.context);
-		if(this.async)
-			identifier += ` ${this.async}`;
-		if(!this.recursive)
-			identifier += " nonrecursive";
-		if(this.addon)
-			identifier += ` ${requestShortener.shorten(this.addon)}`;
-		if(this.regExp)
-			identifier += ` ${this.prettyRegExp(this.regExp + "")}`;
-
-		return identifier;
-	}
-
-	libIdent(options) {
-		let identifier = this.contextify(options.context, this.context);
-		if(this.async)
-			identifier += ` ${this.async}`;
-		if(this.recursive)
-			identifier += " recursive";
-		if(this.addon)
-			identifier += ` ${this.contextify(options.context, this.addon)}`;
-		if(this.regExp)
-			identifier += ` ${this.prettyRegExp(this.regExp + "")}`;
-
-		return identifier;
-	}
-
-	needRebuild(fileTimestamps, contextTimestamps) {
-		const ts = contextTimestamps[this.context];
-		if(!ts) {
-			return true;
-		}
-
-		return ts >= this.builtTime;
-	}
-
-	unbuild() {
-		this.built = false;
-		super.unbuild();
-	}
-
-	build(options, compilation, resolver, fs, callback) {
-		this.built = true;
-		this.builtTime = Date.now();
-		this.resolveDependencies(fs, this.context, this.recursive, this.regExp, (err, dependencies) => {
-			if(err) return callback(err);
-
-			// Reset children
-			this.dependencies = [];
-			this.blocks = [];
-
-			// abort if something failed
-			// this will create an empty context
-			if(!dependencies) {
-				callback();
-				return;
-			}
-
-			// enhance dependencies with meta info
-			dependencies.forEach(dep => {
-				dep.loc = dep.userRequest;
-				dep.request = this.addon + dep.request;
-			});
-
-			if(!this.async || this.async === "eager") {
-
-				// if we have an sync or eager context
-				// just add all dependencies and continue
-				this.dependencies = dependencies;
-
-			} else if(this.async === "lazy-once") {
-
-				// for the lazy-once mode create a new async dependency block
-				// and add that block to this context
-				if(dependencies.length > 0) {
-					const block = new AsyncDependenciesBlock(this.chunkName, this);
-					dependencies.forEach(dep => {
-						block.addDependency(dep);
-					});
-					this.addBlock(block);
-				}
-
-			} else if(this.async === "weak" || this.async === "async-weak") {
-
-				// we mark all dependencies as weak
-				dependencies.forEach(dep => dep.weak = true);
-				this.dependencies = dependencies;
-
-			} else {
-				// if we are lazy create a new async dependency block per dependency
-				// and add all blocks to this context
-				dependencies.forEach((dep, idx) => {
-					let chunkName = this.chunkName;
-					if(chunkName) {
-						if(!/\[(index|request)\]/.test(chunkName))
-							chunkName += "[index]";
-						chunkName = chunkName.replace(/\[index\]/g, idx);
-						chunkName = chunkName.replace(/\[request\]/g, Template.toPath(dep.userRequest));
-					}
-					const block = new AsyncDependenciesBlock(chunkName, dep.module, dep.loc);
-					block.addDependency(dep);
-					this.addBlock(block);
-				});
-			}
-			callback();
-		});
-	}
-
-	getUserRequestMap(dependencies) {
-		// if we filter first we get a new array
-		// therefor we dont need to create a clone of dependencies explicitly
-		// therefore the order of this is !important!
-		return dependencies
-			.filter(dependency => dependency.module)
-			.sort((a, b) => {
-				if(a.userRequest === b.userRequest) {
-					return 0;
-				}
-				return a.userRequest < b.userRequest ? -1 : 1;
-			}).reduce(function(map, dep) {
-				map[dep.userRequest] = dep.module.id;
-				return map;
-			}, Object.create(null));
-	}
-
-	getSyncSource(dependencies, id) {
-		const map = this.getUserRequestMap(dependencies);
-		return `var map = ${JSON.stringify(map, null, "\t")};
-function webpackContext(req) {
-	return __webpack_require__(webpackContextResolve(req));
-};
-function webpackContextResolve(req) {
-	var id = map[req];
-	if(!(id + 1)) // check for number or string
-		throw new Error("Cannot find module '" + req + "'.");
-	return id;
-};
-webpackContext.keys = function webpackContextKeys() {
-	return Object.keys(map);
-};
-webpackContext.resolve = webpackContextResolve;
-module.exports = webpackContext;
-webpackContext.id = ${JSON.stringify(id)};`;
-	}
-
-	getWeakSyncSource(dependencies, id) {
-		const map = this.getUserRequestMap(dependencies);
-		return `var map = ${JSON.stringify(map, null, "\t")};
-function webpackContext(req) {
-	var id = webpackContextResolve(req);
-	if(!__webpack_require__.m[id])
-		throw new Error("Module '" + req + "' ('" + id + "') is not available (weak dependency)");
-	return __webpack_require__(id);
-};
-function webpackContextResolve(req) {
-	var id = map[req];
-	if(!(id + 1)) // check for number or string
-		throw new Error("Cannot find module '" + req + "'.");
-	return id;
-};
-webpackContext.keys = function webpackContextKeys() {
-	return Object.keys(map);
-};
-webpackContext.resolve = webpackContextResolve;
-webpackContext.id = ${JSON.stringify(id)};
-module.exports = webpackContext;`;
-	}
-
-	getAsyncWeakSource(dependencies, id) {
-		const map = this.getUserRequestMap(dependencies);
-
-		return `var map = ${JSON.stringify(map, null, "\t")};
-function webpackAsyncContext(req) {
-	return webpackAsyncContextResolve(req).then(function(id) {
-		if(!__webpack_require__.m[id])
-			throw new Error("Module '" + req + "' ('" + id + "') is not available (weak dependency)");
-		return __webpack_require__(id);
-	});
-};
-function webpackAsyncContextResolve(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 id = map[req];
-		if(!(id + 1)) // check for number or string
-			throw new Error("Cannot find module '" + req + "'.");
-		return id;
-	});
-};
-webpackAsyncContext.keys = function webpackAsyncContextKeys() {
-	return Object.keys(map);
-};
-webpackAsyncContext.resolve = webpackAsyncContextResolve;
-webpackAsyncContext.id = ${JSON.stringify(id)};
-module.exports = webpackAsyncContext;`;
-	}
-
-	getEagerSource(dependencies, id) {
-		const map = this.getUserRequestMap(dependencies);
-		return `var map = ${JSON.stringify(map, null, "\t")};
-function webpackAsyncContext(req) {
-	return webpackAsyncContextResolve(req).then(__webpack_require__);
-};
-function webpackAsyncContextResolve(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 id = map[req];
-		if(!(id + 1)) // check for number or string
-			throw new Error("Cannot find module '" + req + "'.");
-		return id;
-	});
-};
-webpackAsyncContext.keys = function webpackAsyncContextKeys() {
-	return Object.keys(map);
-};
-webpackAsyncContext.resolve = webpackAsyncContextResolve;
-webpackAsyncContext.id = ${JSON.stringify(id)};
-module.exports = webpackAsyncContext;`;
-	}
-
-	getLazyOnceSource(block, dependencies, id, outputOptions, requestShortener) {
-		const promise = DepBlockHelpers.getDepBlockPromise(block, outputOptions, requestShortener, "lazy-once context");
-		const map = this.getUserRequestMap(dependencies);
-		return `var map = ${JSON.stringify(map, null, "\t")};
-function webpackAsyncContext(req) {
-	return webpackAsyncContextResolve(req).then(__webpack_require__);
-};
-function webpackAsyncContextResolve(req) {
-	return ${promise}.then(function() {
-		var id = map[req];
-		if(!(id + 1)) // check for number or string
-			throw new Error("Cannot find module '" + req + "'.");
-		return id;
-	});
-};
-webpackAsyncContext.keys = function webpackAsyncContextKeys() {
-	return Object.keys(map);
-};
-webpackAsyncContext.resolve = webpackAsyncContextResolve;
-webpackAsyncContext.id = ${JSON.stringify(id)};
-module.exports = webpackAsyncContext;`;
-	}
-
-	getLazySource(blocks, id) {
-		let hasMultipleOrNoChunks = false;
-		const map = blocks
-			.filter(block => block.dependencies[0].module)
-			.map((block) => ({
-				dependency: block.dependencies[0],
-				block: block,
-				userRequest: block.dependencies[0].userRequest
-			})).sort((a, b) => {
-				if(a.userRequest === b.userRequest) return 0;
-				return a.userRequest < b.userRequest ? -1 : 1;
-			}).reduce((map, item) => {
-				const chunks = item.block.chunks || [];
-				if(chunks.length !== 1) {
-					hasMultipleOrNoChunks = true;
-				}
-				map[item.userRequest] = [item.dependency.module.id]
-					.concat(chunks.map(chunk => chunk.id));
-
-				return map;
-			}, Object.create(null));
-
-		const requestPrefix = hasMultipleOrNoChunks ?
-			"Promise.all(ids.slice(1).map(__webpack_require__.e))" :
-			"__webpack_require__.e(ids[1])";
-
-		return `var map = ${JSON.stringify(map, null, "\t")};
-function webpackAsyncContext(req) {
-	var ids = map[req];
-	if(!ids)
-		return Promise.reject(new Error("Cannot find module '" + req + "'."));
-	return ${requestPrefix}.then(function() {
-		return __webpack_require__(ids[0]);
-	});
-};
-webpackAsyncContext.keys = function webpackAsyncContextKeys() {
-	return Object.keys(map);
-};
-webpackAsyncContext.id = ${JSON.stringify(id)};
-module.exports = webpackAsyncContext;`;
-	}
-
-	getSourceForEmptyContext(id) {
-		return `function webpackEmptyContext(req) {
-	throw new Error("Cannot find module '" + req + "'.");
-}
-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() {
-		throw new Error("Cannot find module '" + req + "'.");
-	});
-}
-webpackEmptyAsyncContext.keys = function() { return []; };
-webpackEmptyAsyncContext.resolve = webpackEmptyAsyncContext;
-module.exports = webpackEmptyAsyncContext;
-webpackEmptyAsyncContext.id = ${JSON.stringify(id)};`;
-	}
-
-	getSourceString(asyncMode, outputOptions, requestShortener) {
-		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, outputOptions, requestShortener);
-			}
-			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, outputOptions, requestShortener) {
-		return this.getSource(
-			this.getSourceString(this.async, outputOptions, requestShortener)
-		);
-	}
-
-	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);
-	}
-}
-
-module.exports = ContextModule;
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+"use strict";
+const util = require("util");
+const { OriginalSource, RawSource } = require("webpack-sources");
+const Module = require("./Module");
+const AsyncDependenciesBlock = require("./AsyncDependenciesBlock");
+const Template = require("./Template");
+const contextify = require("./util/identifier").contextify;
+
+/** @typedef {"sync" | "eager" | "weak" | "async-weak" | "lazy" | "lazy-once"} ContextMode Context mode */
+/** @typedef {import("./dependencies/ContextElementDependency")} ContextElementDependency */
+
+/**
+ * @callback ResolveDependenciesCallback
+ * @param {Error=} err
+ * @param {ContextElementDependency[]} dependencies
+ */
+
+/**
+ * @callback ResolveDependencies
+ * @param {TODO} fs
+ * @param {TODO} options
+ * @param {ResolveDependenciesCallback} callback
+ */
+
+class ContextModule extends Module {
+	// type ContextMode = "sync" | "eager" | "weak" | "async-weak" | "lazy" | "lazy-once"
+	// type ContextOptions = { resource: string, recursive: boolean, regExp: RegExp, addon?: string, mode?: ContextMode, chunkName?: string, include?: RegExp, exclude?: RegExp, groupOptions?: Object }
+	// resolveDependencies: (fs: FS, options: ContextOptions, (err: Error?, dependencies: Dependency[]) => void) => void
+	// options: ContextOptions
+	/**
+	 * @param {ResolveDependencies} resolveDependencies function to get dependencies in this context
+	 * @param {TODO} options options object
+	 */
+	constructor(resolveDependencies, options) {
+		let resource;
+		let resourceQuery;
+		const queryIdx = options.resource.indexOf("?");
+		if (queryIdx >= 0) {
+			resource = options.resource.substr(0, queryIdx);
+			resourceQuery = options.resource.substr(queryIdx);
+		} else {
+			resource = options.resource;
+			resourceQuery = "";
+		}
+
+		super("javascript/dynamic", resource);
+
+		// Info from Factory
+		this.resolveDependencies = resolveDependencies;
+		this.options = Object.assign({}, options, {
+			resource: resource,
+			resourceQuery: resourceQuery
+		});
+		if (options.resolveOptions !== undefined) {
+			this.resolveOptions = options.resolveOptions;
+		}
+
+		// Info from Build
+		this._contextDependencies = new Set([this.context]);
+
+		if (typeof options.mode !== "string") {
+			throw new Error("options.mode is a required option");
+		}
+
+		this._identifier = this._createIdentifier();
+	}
+
+	updateCacheModule(module) {
+		this.resolveDependencies = module.resolveDependencies;
+		this.options = module.options;
+		this.resolveOptions = module.resolveOptions;
+	}
+
+	prettyRegExp(regexString) {
+		// remove the "/" at the front and the beginning
+		// "/foo/" -> "foo"
+		return regexString.substring(1, regexString.length - 1);
+	}
+
+	_createIdentifier() {
+		let identifier = this.context;
+		if (this.options.resourceQuery) {
+			identifier += ` ${this.options.resourceQuery}`;
+		}
+		if (this.options.mode) {
+			identifier += ` ${this.options.mode}`;
+		}
+		if (!this.options.recursive) {
+			identifier += " nonrecursive";
+		}
+		if (this.options.addon) {
+			identifier += ` ${this.options.addon}`;
+		}
+		if (this.options.regExp) {
+			identifier += ` ${this.options.regExp}`;
+		}
+		if (this.options.include) {
+			identifier += ` include: ${this.options.include}`;
+		}
+		if (this.options.exclude) {
+			identifier += ` exclude: ${this.options.exclude}`;
+		}
+		if (this.options.groupOptions) {
+			identifier += ` groupOptions: ${JSON.stringify(
+				this.options.groupOptions
+			)}`;
+		}
+		if (this.options.namespaceObject === "strict") {
+			identifier += " strict namespace object";
+		} else if (this.options.namespaceObject) {
+			identifier += " namespace object";
+		}
+
+		return identifier;
+	}
+
+	identifier() {
+		return this._identifier;
+	}
+
+	readableIdentifier(requestShortener) {
+		let identifier = requestShortener.shorten(this.context);
+		if (this.options.resourceQuery) {
+			identifier += ` ${this.options.resourceQuery}`;
+		}
+		if (this.options.mode) {
+			identifier += ` ${this.options.mode}`;
+		}
+		if (!this.options.recursive) {
+			identifier += " nonrecursive";
+		}
+		if (this.options.addon) {
+			identifier += ` ${requestShortener.shorten(this.options.addon)}`;
+		}
+		if (this.options.regExp) {
+			identifier += ` ${this.prettyRegExp(this.options.regExp + "")}`;
+		}
+		if (this.options.include) {
+			identifier += ` include: ${this.prettyRegExp(this.options.include + "")}`;
+		}
+		if (this.options.exclude) {
+			identifier += ` exclude: ${this.prettyRegExp(this.options.exclude + "")}`;
+		}
+		if (this.options.groupOptions) {
+			const groupOptions = this.options.groupOptions;
+			for (const key of Object.keys(groupOptions)) {
+				identifier += ` ${key}: ${groupOptions[key]}`;
+			}
+		}
+		if (this.options.namespaceObject === "strict") {
+			identifier += " strict namespace object";
+		} else if (this.options.namespaceObject) {
+			identifier += " namespace object";
+		}
+
+		return identifier;
+	}
+
+	libIdent(options) {
+		let identifier = contextify(options.context, this.context);
+		if (this.options.mode) {
+			identifier += ` ${this.options.mode}`;
+		}
+		if (this.options.recursive) {
+			identifier += " recursive";
+		}
+		if (this.options.addon) {
+			identifier += ` ${contextify(options.context, this.options.addon)}`;
+		}
+		if (this.options.regExp) {
+			identifier += ` ${this.prettyRegExp(this.options.regExp + "")}`;
+		}
+		if (this.options.include) {
+			identifier += ` include: ${this.prettyRegExp(this.options.include + "")}`;
+		}
+		if (this.options.exclude) {
+			identifier += ` exclude: ${this.prettyRegExp(this.options.exclude + "")}`;
+		}
+
+		return identifier;
+	}
+
+	needRebuild(fileTimestamps, contextTimestamps) {
+		const ts = contextTimestamps.get(this.context);
+		if (!ts) {
+			return true;
+		}
+
+		return ts >= this.buildInfo.builtTime;
+	}
+
+	build(options, compilation, resolver, fs, callback) {
+		this.built = true;
+		this.buildMeta = {};
+		this.buildInfo = {
+			builtTime: Date.now(),
+			contextDependencies: this._contextDependencies
+		};
+		this.resolveDependencies(fs, this.options, (err, dependencies) => {
+			if (err) return callback(err);
+
+			// abort if something failed
+			// this will create an empty context
+			if (!dependencies) {
+				callback();
+				return;
+			}
+
+			// enhance dependencies with meta info
+			for (const dep of dependencies) {
+				dep.loc = {
+					name: dep.userRequest
+				};
+				dep.request = this.options.addon + dep.request;
+			}
+
+			if (this.options.mode === "sync" || this.options.mode === "eager") {
+				// if we have an sync or eager context
+				// just add all dependencies and continue
+				this.dependencies = dependencies;
+			} else if (this.options.mode === "lazy-once") {
+				// for the lazy-once mode create a new async dependency block
+				// and add that block to this context
+				if (dependencies.length > 0) {
+					const block = new AsyncDependenciesBlock(
+						Object.assign({}, this.options.groupOptions, {
+							name: this.options.chunkName
+						}),
+						this
+					);
+					for (const dep of dependencies) {
+						block.addDependency(dep);
+					}
+					this.addBlock(block);
+				}
+			} else if (
+				this.options.mode === "weak" ||
+				this.options.mode === "async-weak"
+			) {
+				// we mark all dependencies as weak
+				for (const dep of dependencies) {
+					dep.weak = true;
+				}
+				this.dependencies = dependencies;
+			} else if (this.options.mode === "lazy") {
+				// if we are lazy create a new async dependency block per dependency
+				// and add all blocks to this context
+				let index = 0;
+				for (const dep of dependencies) {
+					let chunkName = this.options.chunkName;
+					if (chunkName) {
+						if (!/\[(index|request)\]/.test(chunkName)) {
+							chunkName += "[index]";
+						}
+						chunkName = chunkName.replace(/\[index\]/g, index++);
+						chunkName = chunkName.replace(
+							/\[request\]/g,
+							Template.toPath(dep.userRequest)
+						);
+					}
+					const block = new AsyncDependenciesBlock(
+						Object.assign({}, this.options.groupOptions, {
+							name: chunkName
+						}),
+						dep.module,
+						dep.loc,
+						dep.userRequest
+					);
+					block.addDependency(dep);
+					this.addBlock(block);
+				}
+			} else {
+				callback(
+					new Error(`Unsupported mode "${this.options.mode}" in context`)
+				);
+				return;
+			}
+			callback();
+		});
+	}
+
+	getUserRequestMap(dependencies) {
+		// if we filter first we get a new array
+		// therefor we dont need to create a clone of dependencies explicitly
+		// therefore the order of this is !important!
+		return dependencies
+			.filter(dependency => dependency.module)
+			.sort((a, b) => {
+				if (a.userRequest === b.userRequest) {
+					return 0;
+				}
+				return a.userRequest < b.userRequest ? -1 : 1;
+			})
+			.reduce((map, dep) => {
+				map[dep.userRequest] = dep.module.id;
+				return map;
+			}, Object.create(null));
+	}
+
+	getFakeMap(dependencies) {
+		if (!this.options.namespaceObject) {
+			return 9;
+		}
+		// if we filter first we get a new array
+		// therefor we dont need to create a clone of dependencies explicitly
+		// therefore the order of this is !important!
+		let hasNonHarmony = false;
+		let hasNamespace = false;
+		let hasNamed = false;
+		const fakeMap = dependencies
+			.filter(dependency => dependency.module)
+			.sort((a, b) => {
+				return b.module.id - a.module.id;
+			})
+			.reduce((map, dep) => {
+				const exportsType =
+					dep.module.buildMeta && dep.module.buildMeta.exportsType;
+				const id = dep.module.id;
+				if (!exportsType) {
+					map[id] = this.options.namespaceObject === "strict" ? 1 : 7;
+					hasNonHarmony = true;
+				} else if (exportsType === "namespace") {
+					map[id] = 9;
+					hasNamespace = true;
+				} else if (exportsType === "named") {
+					map[id] = 3;
+					hasNamed = true;
+				}
+				return map;
+			}, Object.create(null));
+		if (!hasNamespace && hasNonHarmony && !hasNamed) {
+			return this.options.namespaceObject === "strict" ? 1 : 7;
+		}
+		if (hasNamespace && !hasNonHarmony && !hasNamed) {
+			return 9;
+		}
+		if (!hasNamespace && !hasNonHarmony && hasNamed) {
+			return 3;
+		}
+		if (!hasNamespace && !hasNonHarmony && !hasNamed) {
+			return 9;
+		}
+		return fakeMap;
+	}
+
+	getFakeMapInitStatement(fakeMap) {
+		return typeof fakeMap === "object"
+			? `var fakeMap = ${JSON.stringify(fakeMap, null, "\t")};`
+			: "";
+	}
+
+	getReturn(type) {
+		if (type === 9) {
+			return "__webpack_require__(id)";
+		}
+		return `__webpack_require__.t(id, ${type})`;
+	}
+
+	getReturnModuleObjectSource(fakeMap, fakeMapDataExpression = "fakeMap[id]") {
+		if (typeof fakeMap === "number") {
+			return `return ${this.getReturn(fakeMap)};`;
+		}
+		return `return __webpack_require__.t(id, ${fakeMapDataExpression})`;
+	}
+
+	getSyncSource(dependencies, id) {
+		const map = this.getUserRequestMap(dependencies);
+		const fakeMap = this.getFakeMap(dependencies);
+		const returnModuleObject = this.getReturnModuleObjectSource(fakeMap);
+
+		return `var map = ${JSON.stringify(map, null, "\t")};
+${this.getFakeMapInitStatement(fakeMap)}
+
+function webpackContext(req) {
+	var id = webpackContextResolve(req);
+	${returnModuleObject}
+}
+function webpackContextResolve(req) {
+	var id = map[req];
+	if(!(id + 1)) { // check for number or string
+		var e = new Error("Cannot find module '" + req + "'");
+		e.code = 'MODULE_NOT_FOUND';
+		throw e;
+	}
+	return id;
+}
+webpackContext.keys = function webpackContextKeys() {
+	return Object.keys(map);
+};
+webpackContext.resolve = webpackContextResolve;
+module.exports = webpackContext;
+webpackContext.id = ${JSON.stringify(id)};`;
+	}
+
+	getWeakSyncSource(dependencies, id) {
+		const map = this.getUserRequestMap(dependencies);
+		const fakeMap = this.getFakeMap(dependencies);
+		const returnModuleObject = this.getReturnModuleObjectSource(fakeMap);
+
+		return `var map = ${JSON.stringify(map, null, "\t")};
+${this.getFakeMapInitStatement(fakeMap)}
+
+function webpackContext(req) {
+	var id = webpackContextResolve(req);
+	if(!__webpack_require__.m[id]) {
+		var e = new Error("Module '" + req + "' ('" + id + "') is not available (weak dependency)");
+		e.code = 'MODULE_NOT_FOUND';
+		throw e;
+	}
+	${returnModuleObject}
+}
+function webpackContextResolve(req) {
+	var id = map[req];
+	if(!(id + 1)) { // check for number or string
+		var e = new Error("Cannot find module '" + req + "'");
+		e.code = 'MODULE_NOT_FOUND';
+		throw e;
+	}
+	return id;
+}
+webpackContext.keys = function webpackContextKeys() {
+	return Object.keys(map);
+};
+webpackContext.resolve = webpackContextResolve;
+webpackContext.id = ${JSON.stringify(id)};
+module.exports = webpackContext;`;
+	}
+
+	getAsyncWeakSource(dependencies, id) {
+		const map = this.getUserRequestMap(dependencies);
+		const fakeMap = this.getFakeMap(dependencies);
+		const returnModuleObject = this.getReturnModuleObjectSource(fakeMap);
+
+		return `var map = ${JSON.stringify(map, null, "\t")};
+${this.getFakeMapInitStatement(fakeMap)}
+
+function webpackAsyncContext(req) {
+	return webpackAsyncContextResolve(req).then(function(id) {
+		if(!__webpack_require__.m[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(function() {
+		var id = map[req];
+		if(!(id + 1)) { // check for number or string
+			var e = new Error("Cannot find module '" + req + "'");
+			e.code = 'MODULE_NOT_FOUND';
+			throw e;
+		}
+		return id;
+	});
+}
+webpackAsyncContext.keys = function webpackAsyncContextKeys() {
+	return Object.keys(map);
+};
+webpackAsyncContext.resolve = webpackAsyncContextResolve;
+webpackAsyncContext.id = ${JSON.stringify(id)};
+module.exports = webpackAsyncContext;`;
+	}
+
+	getEagerSource(dependencies, id) {
+		const map = this.getUserRequestMap(dependencies);
+		const fakeMap = this.getFakeMap(dependencies);
+		const thenFunction =
+			fakeMap !== 9
+				? `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(function() {
+		var id = map[req];
+		if(!(id + 1)) { // check for number or string
+			var e = new Error("Cannot find module '" + req + "'");
+			e.code = 'MODULE_NOT_FOUND';
+			throw e;
+		}
+		return id;
+	});
+}
+webpackAsyncContext.keys = function webpackAsyncContextKeys() {
+	return Object.keys(map);
+};
+webpackAsyncContext.resolve = webpackAsyncContextResolve;
+webpackAsyncContext.id = ${JSON.stringify(id)};
+module.exports = webpackAsyncContext;`;
+	}
+
+	getLazyOnceSource(block, dependencies, id, runtimeTemplate) {
+		const promise = runtimeTemplate.blockPromise({
+			block,
+			message: "lazy-once context"
+		});
+		const map = this.getUserRequestMap(dependencies);
+		const fakeMap = this.getFakeMap(dependencies);
+		const thenFunction =
+			fakeMap !== 9
+				? `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(function() {
+		var id = map[req];
+		if(!(id + 1)) { // check for number or string
+			var e = new Error("Cannot find module '" + req + "'");
+			e.code = 'MODULE_NOT_FOUND';
+			throw e;
+		}
+		return id;
+	});
+}
+webpackAsyncContext.keys = function webpackAsyncContextKeys() {
+	return Object.keys(map);
+};
+webpackAsyncContext.resolve = webpackAsyncContextResolve;
+webpackAsyncContext.id = ${JSON.stringify(id)};
+module.exports = webpackAsyncContext;`;
+	}
+
+	getLazySource(blocks, id) {
+		let hasMultipleOrNoChunks = false;
+		const fakeMap = this.getFakeMap(blocks.map(b => b.dependencies[0]));
+		const map = blocks
+			.filter(block => block.dependencies[0].module)
+			.map(block => ({
+				dependency: block.dependencies[0],
+				block: block,
+				userRequest: block.dependencies[0].userRequest
+			}))
+			.sort((a, b) => {
+				if (a.userRequest === b.userRequest) return 0;
+				return a.userRequest < b.userRequest ? -1 : 1;
+			})
+			.reduce((map, item) => {
+				const chunks =
+					(item.block.chunkGroup && item.block.chunkGroup.chunks) || [];
+				if (chunks.length !== 1) {
+					hasMultipleOrNoChunks = true;
+				}
+				const arrayStart = [item.dependency.module.id];
+				if (typeof fakeMap === "object") {
+					arrayStart.push(fakeMap[item.dependency.module.id]);
+				}
+				map[item.userRequest] = arrayStart.concat(
+					chunks.map(chunk => chunk.id)
+				);
+
+				return map;
+			}, Object.create(null));
+
+		const chunksStartPosition = typeof fakeMap === "object" ? 2 : 1;
+		const requestPrefix = hasMultipleOrNoChunks
+			? `Promise.all(ids.slice(${chunksStartPosition}).map(__webpack_require__.e))`
+			: `__webpack_require__.e(ids[${chunksStartPosition}])`;
+		const returnModuleObject = this.getReturnModuleObjectSource(
+			fakeMap,
+			"ids[1]"
+		);
+
+		return `var map = ${JSON.stringify(map, null, "\t")};
+function webpackAsyncContext(req) {
+	var ids = map[req];
+	if(!ids) {
+		return Promise.resolve().then(function() {
+			var e = new Error("Cannot find module '" + req + "'");
+			e.code = 'MODULE_NOT_FOUND';
+			throw e;
+		});
+	}
+	return ${requestPrefix}.then(function() {
+		var id = 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
+	// uncaught 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) => {
+			const element = /** @type {ContextElementDependency} */ (dependency);
+			return size + 5 + element.userRequest.length;
+		}, initialSize);
+	}
+}
+
+// TODO remove in webpack 5
+Object.defineProperty(ContextModule.prototype, "recursive", {
+	configurable: false,
+	get: util.deprecate(
+		/**
+		 * @deprecated
+		 * @this {ContextModule}
+		 * @returns {boolean} is recursive
+		 */
+		function() {
+			return this.options.recursive;
+		},
+		"ContextModule.recursive has been moved to ContextModule.options.recursive"
+	),
+	set: util.deprecate(
+		/**
+		 * @deprecated
+		 * @this {ContextModule}
+		 * @param {boolean} value is recursive
+		 * @returns {void}
+		 */
+		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(
+		/**
+		 * @deprecated
+		 * @this {ContextModule}
+		 * @returns {RegExp} regular expression
+		 */
+		function() {
+			return this.options.regExp;
+		},
+		"ContextModule.regExp has been moved to ContextModule.options.regExp"
+	),
+	set: util.deprecate(
+		/**
+		 * @deprecated
+		 * @this {ContextModule}
+		 * @param {RegExp} value Regular expression
+		 * @returns {void}
+		 */
+		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(
+		/**
+		 * @deprecated
+		 * @this {ContextModule}
+		 * @returns {string} addon
+		 */
+		function() {
+			return this.options.addon;
+		},
+		"ContextModule.addon has been moved to ContextModule.options.addon"
+	),
+	set: util.deprecate(
+		/**
+		 * @deprecated
+		 * @this {ContextModule}
+		 * @param {string} value addon
+		 * @returns {void}
+		 */
+		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(
+		/**
+		 * @deprecated
+		 * @this {ContextModule}
+		 * @returns {boolean} is async
+		 */
+		function() {
+			return this.options.mode;
+		},
+		"ContextModule.async has been moved to ContextModule.options.mode"
+	),
+	set: util.deprecate(
+		/**
+		 * @deprecated
+		 * @this {ContextModule}
+		 * @param {ContextMode} value Context mode
+		 * @returns {void}
+		 */
+		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(
+		/**
+		 * @deprecated
+		 * @this {ContextModule}
+		 * @returns {string} chunk name
+		 */
+		function() {
+			return this.options.chunkName;
+		},
+		"ContextModule.chunkName has been moved to ContextModule.options.chunkName"
+	),
+	set: util.deprecate(
+		/**
+		 * @deprecated
+		 * @this {ContextModule}
+		 * @param {string} value chunk name
+		 * @returns {void}
+		 */
+		function(value) {
+			this.options.chunkName = value;
+		},
+		"ContextModule.chunkName has been moved to ContextModule.options.chunkName"
+	)
+});
+
+module.exports = ContextModule;
-- 
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