ci.yml

name: CI
on:
  - push
jobs:
  ci:
    name: Lint and build
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
        with:
          # `PrairieLearn` is a submodule
          submodules: true

      # Yarn cache
      - name: Get yarn cache directory path
        id: yarn-cache-dir-path
        run: echo "::set-output name=dir::$(yarn cache dir)"

      - uses: actions/cache@v2
        with:
          path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
          key: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }}
          restore-keys: |
            ${{ runner.os }}-yarn-

      # Next.js build cache
      - uses: actions/cache@v2
        with:
          path: ${{ github.workspace }}/.next/cache
          key: ${{ runner.os }}-nextjs-${{ hashFiles('**/yarn.lock') }}

      - name: Install
        run: yarn install --frozen-lockfile

      - name: Lint
        run: yarn lint

      - name: Build
        run: yarn build