npm and error messages

node_modules/webpack/lib/PrefetchPlugin.js

@@ -0,0 +1,31 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+"use strict";
+const PrefetchDependency = require("./dependencies/PrefetchDependency");
+
+class PrefetchPlugin {
+
+	constructor(context, request) {
+		if(!request) {
+			this.request = context;
+		} else {
+			this.context = context;
+			this.request = request;
+		}
+	}
+
+	apply(compiler) {
+		compiler.plugin("compilation", (compilation, params) => {
+			const normalModuleFactory = params.normalModuleFactory;
+
+			compilation.dependencyFactories.set(PrefetchDependency, normalModuleFactory);
+		});
+		compiler.plugin("make", (compilation, callback) => {
+			compilation.prefetch(this.context || compiler.context, new PrefetchDependency(this.request), callback);
+		});
+	}
+
+}
+module.exports = PrefetchPlugin;