1 files changed, 74 insertions, 0 deletions
diff --git a/node_modules/webpack/lib/ResolverFactory.js b/node_modules/webpack/lib/ResolverFactory.js
new file mode 100644
index 0000000..7166257
--- /dev/null
+++ b/node_modules/webpack/lib/ResolverFactory.js
@@ -0,0 +1,74 @@
+/*
+ MIT License http://www.opensource.org/licenses/mit-license.php
+ Author Tobias Koppers @sokra
+ */
+"use strict";
+
+const { Tapable, HookMap, SyncHook, SyncWaterfallHook } = require("tapable");
+const Factory = require("enhanced-resolve").ResolverFactory;
+const { cachedCleverMerge } = require("./util/cleverMerge");
+
+/** @typedef {import("enhanced-resolve").Resolver} Resolver */
+
+const EMTPY_RESOLVE_OPTIONS = {};
+
+module.exports = class ResolverFactory extends Tapable {
+	constructor() {
+		super();
+		this.hooks = {
+			resolveOptions: new HookMap(
+				() => new SyncWaterfallHook(["resolveOptions"])
+			),
+			resolver: new HookMap(() => new SyncHook(["resolver", "resolveOptions"]))
+		};
+		this._pluginCompat.tap("ResolverFactory", options => {
+			let match;
+			match = /^resolve-options (.+)$/.exec(options.name);
+			if (match) {
+				this.hooks.resolveOptions
+					.for(match[1])
+					.tap(options.fn.name || "unnamed compat plugin", options.fn);
+				return true;
+			}
+			match = /^resolver (.+)$/.exec(options.name);
+			if (match) {
+				this.hooks.resolver
+					.for(match[1])
+					.tap(options.fn.name || "unnamed compat plugin", options.fn);
+				return true;
+			}
+		});
+		this.cache2 = new Map();
+	}
+
+	get(type, resolveOptions) {
+		resolveOptions = resolveOptions || EMTPY_RESOLVE_OPTIONS;
+		const ident = `${type}|${JSON.stringify(resolveOptions)}`;
+		const resolver = this.cache2.get(ident);
+		if (resolver) return resolver;
+		const newResolver = this._create(type, resolveOptions);
+		this.cache2.set(ident, newResolver);
+		return newResolver;
+	}
+
+	_create(type, resolveOptions) {
+		const originalResolveOptions = Object.assign({}, resolveOptions);
+		resolveOptions = this.hooks.resolveOptions.for(type).call(resolveOptions);
+		const resolver = Factory.createResolver(resolveOptions);
+		if (!resolver) {
+			throw new Error("No resolver created");
+		}
+		/** @type {Map<Object, Resolver>} */
+		const childCache = new Map();
+		resolver.withOptions = options => {
+			const cacheEntry = childCache.get(options);
+			if (cacheEntry !== undefined) return cacheEntry;
+			const mergedOptions = cachedCleverMerge(originalResolveOptions, options);
+			const resolver = this.get(type, mergedOptions);
+			childCache.set(options, resolver);
+			return resolver;
+		};
+		this.hooks.resolver.for(type).call(resolver, resolveOptions);
+		return resolver;
+	}
+};