add jest

Author: omermecitoglu

.github/workflows/npm-publish.yml

@@ -12,7 +12,7 @@ jobs:
           node-version: '20.x'
           registry-url: 'https://registry.npmjs.org'
       - run: npm ci
-      # - run: npm test
+      - run: npm test
       - run: npm run build
       - run: npm publish
         env:

jest.config.js

@@ -0,0 +1,4 @@
+module.exports = {
+  preset: "ts-jest",
+  testEnvironment: "node",
+};