version: 2
jobs:
  build:
    docker:
      - image: circleci/node:10
    environment:
      LANG: en_US.UTF-8
    steps:
      - checkout
      - run:
          name: Update NPM version
          command: sudo npm install -g npm@latest
      - restore-cache:
          name: Restore NPM Package Cache
          keys:
            - npm-packages-{{ checksum "package-lock.json" }}
            - npm-packages-
      - run:
          name: Install Dependencies
          command: npm install
      - save-cache:
          name: Save NPM Package Cache
          key: npm-packages-{{ checksum "package-lock.json" }}
          paths:
            - ./node_modules
      - run:
          name: Run Linter
          command: npm run lint
      - run:
          name: Run Tests
          command: npm run test:ci
      - store_artifacts:
          path: ./coverage/lcov-report
      - run:
          name: Upload Coverage
          when: on_success
          command: bash <(curl -s https://codecov.io/bash) -Z -C $CIRCLE_SHA1