version: 2.0

references:

  workspace_root: &workspace_root
    ./

  node_container: &node_container
    docker:
      - image: circleci/node:8

  attach_workspace: &attach_workspace
    attach_workspace:
      at: *workspace_root

  run_on_master: &run_on_master
    filters:
      branches:
        only: master

jobs:
  dependencies:
    <<: *node_container
    steps:
      - checkout
      - run: npm install
      - persist_to_workspace:
          root: *workspace_root
          paths:
            - node_modules
  test:
    <<: *node_container
    steps:
      - checkout
      - *attach_workspace
      - run: npm run test
  publish:
    <<: *node_container
    steps:
      - checkout
      - *attach_workspace
      - run: sudo npm install -g publish
      - run: publish

workflows:
  version: 2
  default:
    jobs:
      - dependencies
      - test:
          requires: [ 'dependencies' ]
      - publish:
          context: ci-publish
          requires: [ 'dependencies', 'test' ]
          <<: *run_on_master