CircleCI example workflow

config.yml

# Example of a CircleCI's config file (.circleci/config.yml)
---
version: 2
jobs:
  build:
    docker:
    - image: circleci/node:10
    # choosing a neutral folder (/tmp) as it is commonly accessible by all users in most types of linuxes
    working_directory: /tmp/repo

    steps:
    - checkout
    
    # installs dependencies
    - run: yarn

    # builds distribution to folder build/
    # ensure code is buildable for now
    # TODO: save to cache and use to deployment
    - run: yarn build

    # run lint and tests
    - run: |
        yarn lint
        yarn test