language: node_js
node_js:
  - "stable"
after_success: 'npm run coveralls'
deploy:
  provider: npm
  email: $NPM_EMAIL
  api_key: $NPM_TOKEN
  on:
    tags: true
language: node_js
node_js:
  - "stable"
  - "9"
after_success: 'npm run coveralls'
deploy:
  provider: npm
  email: $NPM_EMAIL
  api_key: $NPM_TOKEN
  on:
    tags: true
Downgrade node version to 9
Downgrade node version to 9
