feat(auth): implement user authentication system

backend/node_modules/@jest/expect-utils/build/index.js

@@ -0,0 +1,34 @@
+'use strict';
+
+Object.defineProperty(exports, '__esModule', {
+  value: true
+});
+var _exportNames = {
+  equals: true,
+  isA: true
+};
+Object.defineProperty(exports, 'equals', {
+  enumerable: true,
+  get: function () {
+    return _jasmineUtils.equals;
+  }
+});
+Object.defineProperty(exports, 'isA', {
+  enumerable: true,
+  get: function () {
+    return _jasmineUtils.isA;
+  }
+});
+var _jasmineUtils = require('./jasmineUtils');
+var _utils = require('./utils');
+Object.keys(_utils).forEach(function (key) {
+  if (key === 'default' || key === '__esModule') return;
+  if (Object.prototype.hasOwnProperty.call(_exportNames, key)) return;
+  if (key in exports && exports[key] === _utils[key]) return;
+  Object.defineProperty(exports, key, {
+    enumerable: true,
+    get: function () {
+      return _utils[key];
+    }
+  });
+});