language: node_js
node_js:
- 6
- node
cache:
  directories:
  - node_modules
jobs:
  include:
    - stage: npm release
      if: branch IN (env(RELEASE_BRANCHES))
      node_js: 6
      script: npm run build
      before_deploy:
      - npm --no-git-tag-version version $($(npm bin)/json -f package.json version)-prerelease.$(date +%s)
      - git config --global user.email $(git log --pretty=format:"%ae" -n1)
      - git config --global user.name $(git log --pretty=format:"%an" -n1)
      deploy:
        provider: npm
        skip_cleanup: true
        email: $NPM_EMAIL
        api_key: $NPM_TOKEN