version: 2.1
workflows:
  workflow1:
    jobs:
      - hello1
      - yarn1
      - lint1:
          requires: 
            - yarn1
      - test1:
          requires:
            - yarn1
jobs: 
  hello1: 
    docker: 
      - 
        image: "circleci/node:12"
    steps: 
      - checkout
      - 
        run: 
          command: "echo ok"
          name: "Hello World"

  yarn1:
    docker: 
      - 
        image: "circleci/node:12"
    steps: 
      - checkout
      - restore_cache:
          key: yarn-v1-packages-{{ checksum "yarn.lock" }}
      - run: yarn global add node-gyp && yarn install
      - save_cache:
          key: yarn-v1-packages-{{ checksum "yarn.lock" }}      
          paths:
            - ./node_modules

  lint1:
    docker: 
      - 
        image: "circleci/node:12"
    steps: 
      - checkout
      - restore_cache:
          key: yarn-v1-packages-{{ checksum "yarn.lock" }}
      - run: yarn lint && yarn format:check

  test1:
    docker: 
      - 
        image: "circleci/node:12"
    steps: 
      - checkout
      - restore_cache:
          key: yarn-v1-packages-{{ checksum "yarn.lock" }}
      - run: yarn test:ci