circle.yml

machine:
  environment:
    YARN_VERSION: 0.18.1
    PATH: "${PATH}:${HOME}/.yarn/bin:${HOME}/${CIRCLE_PROJECT_REPONAME}/node_modules/.bin"
  node:
    version: 6.1.0

dependencies:
  pre:
    - |
      if [[ ! -e ~/.yarn/bin/yarn || $(yarn --version) != "${YARN_VERSION}" ]]; then
        echo "Download and install Yarn."
        curl -o- -L https://yarnpkg.com/install.sh | bash -s -- --version $YARN_VERSION
      else
        echo "The correct version of Yarn is already installed."
      fi
  override:
    - yarn install
  cache_directories:
    - ~/.yarn
    - ~/.cache/yarn

deployment:
  npmjs:
    branch: master
    commands:
      - echo -e "$NPM_USER\n$NPM_PASS\n$NPM_EMAIL" | npm login
      - npm publish