chore: add CI

.github/workflows/test.yml

@@ -0,0 +1,21 @@
+name: CI Test
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+jobs:
+  test:
+    name: Node.js ${{ matrix.node-version }}
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        node-version: [18, 20, 21]
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: ${{ matrix.node-version }}
+      - run: npm install
+      - run: npm test

dprint.json

@@ -3,6 +3,7 @@
 		"index.json",
 		"dprint.json",
 		"package.json",
+		".github/workflows/*.yml",
 		"test/test.js"
 	],
 	"extends": ["./index.json"],