.gh/wf/ci.yml: adds steps to run scripts typecheck, compile and test.

Author: ufukty

.github/workflows/ci.yml

@@ -20,4 +20,7 @@ jobs:
       - uses: actions/setup-node@v6
         with: { node-version: 18, cache: npm }
       - run: npm ci
+      - run: npm run typecheck
       - run: npm run lint
+      - run: npm run compile
+      - run: npm run test # requries `compile`