add jest

__test__/utils_test.ts

@@ -0,0 +1,6 @@
+import { Utils } from '../src/utils';
+
+test('object assignment', () => {
+  const v = Utils.crc32('/v1/session/init');
+  console.log(v);
+});

jest.config.js

@@ -0,0 +1,7 @@
+module.exports = {
+  transform: {
+    '^.+\\.tsx?$': 'ts-jest',
+  },
+  testRegex: '(/__tests__/.*|(\\.|/)(test|spec))\\.(jsx?|tsx?)$',
+  moduleFileExtensions: ['ts', 'tsx', 'js', 'jsx', 'json', 'node'],
+};

package.json

@@ -4,11 +4,17 @@
   "description": "",
   "main": "index.js",
   "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1"
+    "test": "jest"
   },
   "author": "",
   "license": "ISC",
   "dependencies": {
     "crypto-js": "^3.1.9-1"
+  },
+  "devDependencies": {
+    "@types/jest": "^24.0.11",
+    "jest": "^24.5.0",
+    "ts-jest": "^24.0.0",
+    "typescript": "^3.3.4000"
   }
 }