npm and error messages

node_modules/adjust-sourcemap-loader/codec/webpack-bootstrap.js

@@ -0,0 +1,21 @@
+'use strict';
+
+/**
+ * Codec for webpack generated bootstrap code.
+ * @type {{name:string, decode:function, abstract:boolean}}
+ */
+module.exports = {
+  name    : 'webpack-bootstrap',
+  decode  : decode,
+  abstract: true
+};
+
+/**
+ * Validate the given uri (abstract).
+ * @this {{options: object}} A loader or compilation
+ * @param {string} uri A source uri to decode
+ * @returns {boolean|string} False where unmatched else True
+ */
+function decode(uri) {
+  return /^webpack\/bootstrap\s+\w{20}$/.test(uri);
+}