# https://circleci.com/docs/install-and-use-yarn/

machine:
  node:
    version: 6.10.0
  environment:
    YARN_VERSION: 0.21.3
    PATH: "${PATH}:${HOME}/.yarn/bin:${HOME}/${CIRCLE_PROJECT_REPONAME}/node_modules/.bin"

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

test:
  pre:
    - yarn run build
  override:
    - yarn run test-ci