housekeeping: use bundlesize (#4701)

* housekeeping: use bundlesize

* evaluate bundle size after success

Author: shockey

.travis.yml

@@ -15,6 +15,8 @@ before_deploy:
   - npm run build
 env:
   - DOCKER_IMAGE_NAME=swaggerapi/swagger-ui
+script:
+  - npm test
 deploy:
   - provider: npm
     email: [email protected]
@@ -52,3 +54,5 @@ after_success:
         docker push $DOCKER_IMAGE_NAME:$DOCKER_IMAGE_TAG;
       fi;
     fi;
+  - npm run build-bundle
+  - bundlesize