Only lint once in CI (#5128)

.github/workflows/build.yml

@@ -41,3 +41,19 @@ jobs:
 
       env:
         CI: true
+
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Use Node.js 16.x
+      uses: actions/setup-node@v1
+      with:
+        node-version: 16.x
+
+    - name: Npm Install
+      run: npm install
+
+    - name: Lint
+      run: npm run lint

tests/run_all_tests.sh

@@ -49,7 +49,10 @@ run_test_command () {
 }
 
 # Lint the codebase.
-run_test_command "eslint" "eslint ."
+# Skip for CI environments, because linting is run separately.
+if [ -z $CI ]; then
+  run_test_command "eslint" "eslint ."
+fi
 
 # Run the full usual build process.
 run_test_command "build" "npm run build"