name: Core

on:
  push:
    branches: [ master ]
    paths: [ 'packages/core/**' ]
  pull_request:
    branches: [ master ]
    paths: [ 'packages/core/**' ]

jobs:
  main:
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v2

      # https://github.com/actions/cache/blob/main/examples.md#node---yarn
      - name: Get yarn cache directory path
        id: yarn-cache-dir-path
        run: echo "::set-output name=dir::$(yarn cache dir)"

      - uses: actions/cache@v2
        id: yarn-cache # use this to check for `cache-hit` (`steps.yarn-cache.outputs.cache-hit != 'true'`)
        with:
          path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
          key: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }}
          restore-keys: |
            ${{ runner.os }}-yarn-

      - name: Install packages
        run: yarn

      - name: Lint
        working-directory: packages/core
        run: yarn lint

      - name: Build
        working-directory: packages/core
        run: yarn build