language: node_js
node_js:
  - "8.11.3"
before_script:
  - npm install -g gulp
script: 
  - gulp
  - npm test
after_success: npm run coverage
language: node_js
node_js:
  - "10"
before_script:
  - npm install -g gulp
script: 
  - gulp
  - npm test
after_success: npm run coverage

Update to newer node version
Update to newer node version