Run the eslint check in CI

.github/workflows/lint.yml

@@ -0,0 +1,29 @@
+name: Lint
+
+on: [push, pull_request]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v1
+    - name: Use Node.js 10.x
+      uses: actions/setup-node@v1
+      with:
+        node-version: 10.x
+    - name: Get yarn cache
+      id: yarn-cache
+      run: echo "::set-output name=dir::$(yarn cache dir)"
+    - uses: actions/cache@v1
+      with:
+        path: ${{ steps.yarn-cache.outputs.dir }}
+        key: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }}
+        restore-keys: |
+          ${{ runner.os }}-yarn-
+    - name: yarn install, build, integrity, test
+      run: |
+        yarn install --frozen-lockfile
+        yarn run build
+        yarn run integrity
+        yarn run eslint:check

.github/workflows/testjs.yml

@@ -26,10 +26,9 @@ jobs:
           ${{ runner.os }}-yarn-
     - name: yarn install, build, integrity, test
       run: |
-        yarn install
+        yarn install --frozen-lockfile
         yarn run build
-        yarn run integrity
-        
+
         pushd packages/base
         yarn run test:unit:firefox:headless
         popd