version: 2
jobs:
  build:
    working_directory: ~/app
    docker:
      - image: circleci/node:8.10.0
    steps:
      - checkout
      - restore_cache:
          keys:
            # Find a cache corresponding to this specific package.json checksum
            # when this file is changed, this key will fail
            - v1-npm-deps-{{ arch }}-{{ checksum "yarn.lock" }}
            # Find the most recent cache used from any branch
            - v1-npm-deps-{{ arch }} # used if above checksum fails
      - run: yarn
      - save_cache:
          key: v1-npm-deps-{{ arch }}-{{ checksum "yarn.lock" }}
          paths:
            - node_modules
      - run: yarn run check