Add CI

.github/workflows/ci.yaml

@@ -0,0 +1,21 @@
+# https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-nodejs
+name: CI
+
+on:
+  push:
+    branches: ['main']
+  pull_request:
+    branches: ['main']
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Install Node.js
+        uses: actions/setup-node@v4
+      - name: Install Dependencies
+        run: npm ci --no-fund
+      - name: Test Format
+        run: npm run test:format

package.json

@@ -50,7 +50,7 @@
     "build": "tsc --build && make --directory=tools --no-print-directory build",
     "clean": "rm -rf dist",
     "format": "npm run formatter -- --write",
-    "formatter": "prettier --cache --log-level warn './**/*.{css,html,json,md,ts}'",
+    "formatter": "prettier --cache --log-level warn './**/*.{css,html,json,md,ts,yaml}'",
     "preversion": "[ -z \"$(git status -z)\" ]",
     "prepublishOnly": "! git symbolic-ref --quiet HEAD || git push --follow-tags origin \"$(git branch --show-current)\"",
     "start": "make --directory=tools --no-print-directory watch",