Add: github action for linting

.github/workflows/lint.yml

@@ -7,7 +7,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v1
-      - uses: stefanoeb/eslint-action@1.0.2
-        with:
-          entryPoint: ./js
-          files: js/packages
+      - name: Install modules
+        run: yarn
+        working-directory: ./js
+      - name: Run ESLint
+        run: yarn lint:eslint
+        working-directory: ./js
+

js/package.json

@@ -14,7 +14,8 @@
     "bootstrap": "lerna link && lerna bootstrap",
     "build": "lerna run build",
     "start": "cross-env CI=true lerna run start --scope @oyster/common --stream --parallel --scope web",
-    "lint": "eslint 'packages/*/{src,test}/**/*.ts' && prettier -c 'packages/*/{src,test}/**/*.ts'",
+    "lint": "npm run lint:eslint && prettier -c 'packages/*/{src,test}/**/*.ts'",
+    "lint:eslint": "eslint 'packages/*/{src,test}/**/*.ts'",
     "lint:fix": "eslint --fix 'packages/*/{src,test}/**/*.ts' && prettier --write 'packages/*/{src,test}/**/*.{ts,tsx}'",
     "format:fix": "lerna run format:fix",
     "deploy": "run-s deploy:docs build deploy:apps && gh-pages -d docs",