feat(auth): implement user authentication system

backend/node_modules/istanbul-reports/index.js

@@ -0,0 +1,24 @@
+'use strict';
+/*
+ Copyright 2012-2015, Yahoo Inc.
+ Copyrights licensed under the New BSD License. See the accompanying LICENSE file for terms.
+ */
+const path = require('path');
+
+module.exports = {
+    create(name, cfg) {
+        cfg = cfg || {};
+        let Cons;
+        try {
+            Cons = require(path.join(__dirname, 'lib', name));
+        } catch (e) {
+            if (e.code !== 'MODULE_NOT_FOUND') {
+                throw e;
+            }
+
+            Cons = require(name);
+        }
+
+        return new Cons(cfg);
+    }
+};