Chore/add tests

.github/workflows/ci.yaml

@@ -0,0 +1,21 @@
+name: Run tests
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-node@v3
+        with:
+          node-version: 18
+      - run: npm i -g npm
+      - run: npm ci
+      - run: npm run test