Circle CI config for React App

config.yml

version: 2
jobs:
  build:
    docker:
      - image: circleci/node:9.11.1

    working_directory: ~/app

    branches:
        only:
          - master

    steps:
      - checkout
            
      # Download and cache dependencies
      - restore_cache:
          keys:
          - v1-dependencies-{{ checksum "package.json" }}
          # fallback to using the latest cache if no exact match is found
          - v1-dependencies-

      - run: 
          name: "Yarn Install"
          command: yarn install


      - save_cache:
          paths:
            - node_modules
          key: v1-dependencies-{{ checksum "package.json" }}
      - run:
          name: "JavaScript Linter"
          command: yarn lint --format junit -o reports/junit/js-lint-results.xml  
      - run:
          name: "JavaScript Test Suite"
          environment:
            JEST_JUNIT_OUTPUT: reports/junit/js-test-results.xml
            CI: true
          command: yarn test --testResultsProcessor="jest-junit"
      - store_test_results:
          path: reports/junit
      - store_artifacts:
          path: reports/junit
      - run: 
          name: "Yarn Build"
          command: yarn build
          no_output_timeout: 3600
  
      - deploy:
          name: "Deploy to Firebase"
          command: |
            if [ "${CIRCLE_BRANCH}" == "master" ]; then
              ./node_modules/.bin/firebase use --token $FIREBASE_DEPLOY_TOKEN $FIREBASE_PROJECT_ID
              ./node_modules/.bin/firebase deploy --non-interactive --token "$FIREBASE_DEPLOY_TOKEN"
            fi