Add Prettier to CI

.github/workflows/tests.yml

@@ -69,22 +69,29 @@ jobs:
   formatter:
     runs-on: ubuntu-18.04
 
-    container:
-      image: python:3.7
-
     name: Formatting
 
     steps:
       - name: Check out repository code
         uses: actions/checkout@v2
-      - name: Install dependencies
+      - uses: actions/setup-python@v2
+        with:
+          python-version: 3.7
+      - name: Install Python dependencies
         run: pip install -r requirements-dev.txt
+      - name: Setup Node
+        uses: actions/setup-node@v2
+      - name: Install Node dependencies
+        run: npm ci
       - name: Add localsettings
         run: cp evap/settings_test.py evap/localsettings.py
       - name: Check code formatting
         run: black --check evap
       - name: Check imports formatting
         run: isort . --check --diff
+      - run: ls -laR evap/static/ts
+      - name: Check TypeScript formatting
+        run: npx prettier --list-different --loglevel debug --config evap/static/ts/.prettierrc.json evap/static/ts/src
 
 
   backup-process: