npm and error messages

node_modules/laravel-mix/src/components/Extract.js

@@ -0,0 +1,56 @@
+let webpack = require('webpack');
+
+class Extract {
+    /**
+     * Create a new component instance.
+     */
+    constructor() {
+        this.extractions = [];
+    }
+
+    /**
+     * Register the component.
+     *
+     * @param {*} libs
+     * @param {string} output
+     */
+    register(libs, output) {
+        this.extractions.push({ libs, output });
+    }
+
+    /**
+     * Assets to append to the webpack entry.
+     *
+     * @param {Entry} entry
+     */
+    webpackEntry(entry) {
+        this.extractions = this.extractions.map(
+            entry.addExtraction.bind(entry)
+        );
+
+        // If we are extracting vendor libraries, then we also need
+        // to extract Webpack's manifest file to assist with caching.
+        if (this.extractions.length) {
+            this.extractions.push(
+                path.join(entry.base, 'manifest').replace(/\\/g, '/')
+            );
+        }
+    }
+
+    /**
+     * webpack plugins to be appended to the master config.
+     */
+    webpackPlugins() {
+        // If we're extracting any vendor libraries, then we
+        // need to add the CommonChunksPlugin to strip out
+        // all relevant code into its own file.
+        if (this.extractions.length) {
+            return new webpack.optimize.CommonsChunkPlugin({
+                names: this.extractions,
+                minChunks: Infinity
+            });
+        }
+    }
+}
+
+module.exports = Extract;