version: 2
jobs:
  build:
    docker:
      - image: circleci/node:12.14.1
    steps:
      - checkout
      - restore_cache:
          keys:
            - v1-dependencies-{{ checksum "package.json" }}
            - v1-dependencies-
      - run:
          name: Install dependencies
          command: npm install
      - save_cache:
          paths:
            - node_modules
          key: v1-dependencies-{{ checksum "package.json" }}
      - run:
          name: Build project
          command: npm run build
      - persist_to_workspace:
          root: /home/circleci/project
          paths:
            - node_modules/*
            - dist/*
  lint:
    docker:
      - image: circleci/node:12.14.1
    steps:
      - checkout
      - attach_workspace:
          at: /home/circleci/project
      - run:
          name: Code linting
          command: npm run lint
  test:
    docker:
      - image: circleci/node:12.14.1
    steps:
      - checkout
      - attach_workspace:
          at: /home/circleci/project
      - run:
          name: Automated tests
          command: npm run test
workflows:
  version: 2
  app:
    jobs:
      - build
      - lint:
          requires:
            - build
      - test:
          requires:
            - build