Tests: Run linting and unit tests in separate stages

Author: youknowriad

.travis.yml

@@ -62,6 +62,11 @@ jobs:
       php: 5.6
       script: composer install && ./vendor/bin/phpcs
 
+    - stage: lint
+      script:
+        - npm install || exit 1
+        - npm run lint || exit 1
+
     - stage: unit
       script:
         - npm install || exit 1

package.json

@@ -126,7 +126,7 @@
     "lint": "eslint .",
     "dev": "cross-env BABEL_ENV=default webpack --watch",
     "test": "npm run lint && npm run test-unit",
-    "ci": "concurrently \"npm run lint && npm run build\" \"npm run test-unit:coverage-ci\"",
+    "ci": "concurrently \"npm run build\" \"npm run test-unit:coverage-ci\"",
     "fixtures:clean": "rimraf \"blocks/test/fixtures/*.+(json|serialized.html)\"",
     "fixtures:server-attributes": "./bin/get-server-block-attributes.php > blocks/test/server-attributes.json",
     "fixtures:generate": "npm run fixtures:server-attributes && cross-env GENERATE_MISSING_FIXTURES=y npm run test-unit",