feat(auth): implement user authentication system

backend/node_modules/@dabh/diagnostics/modifiers/namespace-ansi.js

@@ -0,0 +1,20 @@
+var colorspace = require('@so-ric/colorspace');
+var kuler = require('kuler');
+
+/**
+ * Prefix the messages with a colored namespace.
+ *
+ * @param {Array} args The messages array that is getting written.
+ * @param {Object} options Options for diagnostics.
+ * @returns {Array} Altered messages array.
+ * @public
+ */
+module.exports = function ansiModifier(args, options) {
+  var namespace = options.namespace;
+  var ansi = options.colors !== false
+  ? kuler(namespace +':', colorspace(namespace))
+  : namespace +':';
+
+  args[0] = ansi +' '+ args[0];
+  return args;
+};