Check prettier on CI

.github/workflows/lint.yml

@@ -0,0 +1,37 @@
+name: Lint
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+jobs:
+  test:
+    timeout-minutes: 10
+
+    strategy:
+      matrix:
+        os: [ubuntu-latest]
+        node-version: [18]
+
+    runs-on: ${{ matrix.os }}
+
+    steps:
+    - uses: actions/checkout@v2
+      with:
+        ref: ${{ github.head_ref }}
+        # This is important to fetch the changes to the previous commit
+        fetch-depth: 0
+
+    - uses: actions/setup-node@v2
+      with:
+        node-version: ${{ matrix.node-version }}
+        cache: 'yarn'
+
+    - name: Install dependencies
+      run: yarn install
+
+    - name: Prettify code
+      uses: creyD/[email protected]
+      with:
+        prettier_options: --dry --check
+        only_changed: True