feat: ESLint

Author: technote-space

.github/workflows/ci.yml

@@ -9,6 +9,25 @@ on:
 name: Build
 
 jobs:
+  eslint:
+    name: ESLint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v1
+        with:
+          fetch-depth: 1
+      - name: Install Package dependencies
+        run: yarn install
+      - name: Check code style
+        run: yarn lint
+      - uses: 8398a7/action-slack@v1
+        with:
+          type: failure
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}
+        if: failure()
+
   jest:
     name: Jest
     runs-on: ubuntu-latest