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1 files changed, 57 insertions, 0 deletions

diff --git a/node_modules/webpack/lib/NamedModulesPlugin.js b/node_modules/webpack/lib/NamedModulesPlugin.js
new file mode 100644
index 00000000..a3857ac8
--- /dev/null
+++ b/node_modules/webpack/lib/NamedModulesPlugin.js
@@ -0,0 +1,57 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+"use strict";
+
+const createHash = require("./util/createHash");
+const RequestShortener = require("./RequestShortener");
+
+const getHash = str => {
+	const hash = createHash("md4");
+	hash.update(str);
+	return hash.digest("hex").substr(0, 4);
+};
+
+class NamedModulesPlugin {
+	constructor(options) {
+		this.options = options || {};
+	}
+
+	apply(compiler) {
+		compiler.hooks.compilation.tap("NamedModulesPlugin", compilation => {
+			compilation.hooks.beforeModuleIds.tap("NamedModulesPlugin", modules => {
+				const namedModules = new Map();
+				const context = this.options.context || compiler.options.context;
+
+				for (const module of modules) {
+					if (module.id === null && module.libIdent) {
+						module.id = module.libIdent({ context });
+					}
+
+					if (module.id !== null) {
+						const namedModule = namedModules.get(module.id);
+						if (namedModule !== undefined) {
+							namedModule.push(module);
+						} else {
+							namedModules.set(module.id, [module]);
+						}
+					}
+				}
+
+				for (const namedModule of namedModules.values()) {
+					if (namedModule.length > 1) {
+						for (const module of namedModule) {
+							const requestShortener = new RequestShortener(context);
+							module.id = `${module.id}?${getHash(
+								requestShortener.shorten(module.identifier())
+							)}`;
+						}
+					}
+				}
+			});
+		});
+	}
+}
+
+module.exports = NamedModulesPlugin;