add formatting/linting to ci

Author: aedwardg

.github/workflows/format-and-lint.yml

@@ -0,0 +1,27 @@
+name: Format and Lint
+on:
+  push:
+  pull_request:
+    branches: [ main ]
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node-version: [18]
+    steps:
+    - name: Check out branch (pull request)
+      uses: actions/checkout@v3
+    - name: Use Node.js ${{ matrix.node-version }}
+      uses: actions/setup-node@v3
+      with:
+        node-version: ${{ matrix.node-version }}
+    - name: Install packages
+      run: npm ci
+    - name: Check Formatting with Prettier
+      run: npx prettier --check .
+    - name: Lint with ESLint
+      run: npx eslint .