name: build
on: pull_request
jobs:
  main:
    runs-on: ubuntu-20.04
    steps:
      - uses: actions/checkout@v2
      - id: yarn_cache
        run: echo "::set-output name=dir::$(yarn cache dir)"
      - uses: actions/cache@v1
        with:
          path: ${{ steps.yarn_cache.outputs.dir }}
          key: yarn-${{ hashFiles('**/yarn.lock') }}
          restore-keys: yarn-
      - run: yarn
      - run: yarn build