feat(auth): implement user authentication system

backend/node_modules/logform/dist/ms.js

@@ -0,0 +1,18 @@
+'use strict';
+
+var _this = void 0;
+var format = require('./format');
+var ms = require('ms');
+
+/*
+ * function ms (info)
+ * Returns an `info` with a `ms` property. The `ms` property holds the Value
+ * of the time difference between two calls in milliseconds.
+ */
+module.exports = format(function (info) {
+  var curr = +new Date();
+  _this.diff = curr - (_this.prevTime || curr);
+  _this.prevTime = curr;
+  info.ms = "+".concat(ms(_this.diff));
+  return info;
+});