Firebase, CircleCi - lint, test, build, deploy; triggers on dev/master branches with develop/production contexts, respectively

firebase-circleci.yml

version: 2.1
jobs:
  build-deploy: &build-deploy
    docker:
      - image: circleci/node:10.15.1-browsers

    working_directory: ~/repo

    steps:
      - checkout

      - restore_cache:
          keys:
            - v-{{ .Branch }}-{{ .Environment.CACHE_VERSION }}-dependencies-{{ checksum "yarn.lock" }}

      # 'If you need reproducible dependencies, which is usually the case with the continuous integration systems,
      # you should pass --frozen-lockfile flag': https://yarnpkg.com/lang/en/docs/cli/install/
      - run:
          name: 'install dependencies'
          command: yarn install --frozen-lockfile --ignore-optional --non-interactive

      - run:
          name: 'lint'
          command: yarn lint

      - run:
          name: 'test'
          command: yarn test:unit:ci --runInBand --reporters=default --reporters=jest-junit && yarn test:e2e:ci
          environment:
            JEST_JUNIT_OUTPUT: tests/unit/reports/unit-test-results.xml

      - store_test_results:
          path: tests/unit/reports

      - store_test_results:
          path: tests/e2e/reports

      - store_artifacts:
          path: tests/e2e/screenshots
          destination: e2e-test-screenshots

      - run:
          name: 'build'
          command: yarn build

      - save_cache:
          paths:
            - node_modules
          key: v-{{ .Branch }}-{{ .Environment.CACHE_VERSION }}-dependencies-{{ checksum "yarn.lock" }}

      - run:
          name: 'Firebase deploy'
          command: |
            if [ "${SKIP_DEPLOY}" != "true" ]; then
              ./node_modules/.bin/firebase deploy --project $FIREBASE_PROJECT --token=$FIREBASE_TOKEN
            else
              echo "*** skipping deploy ***"
            fi

  build-deploy-dev:
    <<: *build-deploy
  build-deploy-prod:
    <<: *build-deploy

workflows:
  build-deploy:
    jobs:
      - build-deploy-dev:
          filters:
            branches:
              only: dev
          context: develop
      - build-deploy-prod:
          filters:
            branches:
              only: master
          context: production