message: Add CI check for yarn lockfile diff
diff: @@ -30,7 +30,11 @@ jobs:
  uses: actions/setup-node@v1
  with:
  node-version: ${{ matrix.node }}
  - - run: yarn install
  + - name: Install dependencies and verify lockfile
  + # yarn install will update the yarn.lock file when it doesn't match the package.json.
  + # This can happen when the lockfile has been updated but the package.json file was not.
  + # The '--frozen-lockfile' flag ensures that the yarn.lock file remains the same after yarn install.
  + run: yarn install --frozen-lockfile
  - run: yarn pretty-quick --check --verbose --branch origin/master
  - run: yarn build:dev
  - run: yarn test
  