test: 📦 Add missing dependency and a CI check, to prevent oversights ;p

.github/workflows/test.yml

@@ -0,0 +1,19 @@
+name: Test
+
+on: [push, pull_request]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node-version: [14, 16, 17]
+
+    steps:
+    - uses: actions/checkout@v2
+    - uses: actions/setup-node@v3
+      with:
+        node-version: ${{ matrix.node-version }}
+        cache: 'npm'
+    - run: npm install
+    - run: npm test