Separate test and lint steps

.github/workflows/checks.yml

@@ -24,6 +24,8 @@ jobs:
         run: flake8 .
       - name: Check imports alphabetized
         run: isort --check-only ./app ./tests
+      - name: Run js lint
+        run: npm run lint
       - name: Run js tests
         run: npm test
       - name: Run py tests