adding a github action to allow npm tests to run on PR

.github/workflows/test-on-pr.yml

@@ -0,0 +1,32 @@
+name: Run Tests on PR
+
+on:
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  test:
+    if: ${{ !github.event.pull_request.draft }}
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version:
+          - 18.x
+          - 20.x
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v4
+        with:
+          node-version: ${{ matrix.node-version }}
+          cache: 'npm'
+
+      - name: Install dependencies
+        run: npm install
+
+      - name: Run tests
+        run: npx vitest run --coverage