version: 2.1
jobs:
  deploy:
    docker:
      - image: node:latest
    steps: # a collection of executable commands
      - checkout # special step to check out source code to working directory
      - run:
          name: install deps
          command: 'yarn'
      - run:
          name: set up npm
          command: echo "//registry.npmjs.org/:_authToken=${NPM_AUTH_TOKEN}" > ~/.npmrc
      - run:
          name: publish
          command: ./node_modules/.bin/publish
      - store_artifacts:
          path: ~/.npmrc
          destination: artifact-file
workflows:
  deploy:
    jobs:
      - deploy:
          filters:
            branches:
              only: master