version: 2
 jobs:
   build:
     docker:
       - image: circleci/node:12.3.1
     working_directory: ~/repo
     steps:
       - checkout
       - restore_cache:
           keys:

             - v1-dependencies-{{ checksum "package.json" }}-{{ checksum "package-lock.json" }}

             - v1-dependencies-
 
       - run: npm ci
 
       - save_cache:
           paths:
             - node_modules

           key: v1-dependencies-{{ checksum "package.json" }}-{{ checksum "package-lock.json" }}

 
       # run tests!

       - run: npx eslint

       - run: npm test

       - run: npm run babel