npm and error messages

node_modules/laravel-mix/src/tasks/ConcatenateFilesTask.js

@@ -0,0 +1,29 @@
+let Task = require('./Task');
+let FileCollection = require('../FileCollection');
+
+class ConcatenateFilesTask extends Task {
+    /**
+     * Run the task.
+     */
+    run() {
+        this.files = new FileCollection(this.data.src);
+
+        this.merge();
+    }
+
+    /**
+     * Merge the files into one.
+     */
+    merge() {
+        this.assets.push(this.files.merge(this.data.output, this.data.babel));
+    }
+
+    /**
+     * Handle when a relevant source file is changed.
+     */
+    onChange(updatedFile) {
+        this.merge();
+    }
+}
+
+module.exports = ConcatenateFilesTask;