config.yml

version: 2.1

jobs:
  build_dependencies:
    docker:
      - image: circleci/node:latest
    working_directory: ~/repo
    steps:
      - checkout
      - attach_workspace:
          at: ~/repo
      - restore_cache:
          keys:
            - dependencies-{{ checksum "package.json" }}
            - dependencies-
      - run:
          name: Install
          command: yarn install
      - save_cache:
          paths:
            - ~/repo/node_modules
          key: dependencies-{{ checksum "package.json" }}
      - persist_to_workspace:
          root: .
          paths:
            - node_modules

  test_app:
    docker:
      - image: circleci/node:latest
    working_directory: ~/repo
    steps:
      - checkout
      - attach_workspace:
          at: ~/repo
      - run:
          name: Lint
          command: yarn lint
      - run:
          name: Format
          command: yarn format:check
      - run:
          name: Test
          command: yarn test

workflows:
  version: 2
  build_app:
    jobs:
      - build_dependencies
      - test_app:
          requires:
            - build_dependencies