build workflow (cdk8s-team/cdk8s)

# ~~ Generated by projen. To modify, edit .projenrc.ts and run "npx projen".
 
name: build
on:
  pull_request: {}
  workflow_dispatch: {}
  merge_group: {}
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  build:
    timeout-minutes: 30
    runs-on: latchkey-small
    permissions:
      contents: write
    outputs:
      self_mutation_happened: ${{ steps.self_mutation.outputs.self_mutation_happened }}
    env:
      CI: "true"
    steps:
      - name: Checkout
        uses: actions/checkout@v6
        with:
          ref: ${{ github.event.pull_request.head.ref }}
          repository: ${{ github.event.pull_request.head.repo.full_name }}
      - name: Setup Node.js
        uses: actions/setup-node@v6
        with:
          cache: 'npm'
          node-version: lts/*
          package-manager-cache: false
      - name: Install dependencies
        run: yarn install --check-files
      - name: build
        run: npx projen build
      - name: Find mutations
        id: self_mutation
        run: |-
          git add .
          git diff --staged --patch --exit-code > repo.patch || echo "self_mutation_happened=true" >> $GITHUB_OUTPUT
        shell: bash
        working-directory: ./
      - name: Upload patch
        if: steps.self_mutation.outputs.self_mutation_happened
        uses: actions/upload-artifact@v7
        with:
          name: repo.patch
          path: repo.patch
          overwrite: true
      - name: Fail build on mutation
        if: steps.self_mutation.outputs.self_mutation_happened
        run: |-
          echo "::error::Files were changed during build (see build log). If this was triggered from a fork, you will need to update your branch."
          cat repo.patch
          exit 1
  self-mutation:
    timeout-minutes: 30
    needs: build
    runs-on: latchkey-small
    permissions:
      contents: write
    if: always() && needs.build.outputs.self_mutation_happened && !(github.event.pull_request.head.repo.full_name != github.repository)
    steps:
      - name: Checkout
        uses: actions/checkout@v6
        with:
          token: ${{ secrets.PROJEN_GITHUB_TOKEN }}
          ref: ${{ github.event.pull_request.head.ref }}
          repository: ${{ github.event.pull_request.head.repo.full_name }}
      - name: Download patch
        uses: actions/download-artifact@v8
        with:
          name: repo.patch
          path: ${{ runner.temp }}
      - name: Apply patch
        run: '[ -s ${{ runner.temp }}/repo.patch ] && git apply ${{ runner.temp }}/repo.patch || echo "Empty patch. Skipping."'
      - name: Set git identity
        run: |-
          git config user.name "github-actions[bot]"
          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
      - name: Push changes
        env:
          PULL_REQUEST_REF: ${{ github.event.pull_request.head.ref }}
        run: |-
          git add .
          git commit -s -m "chore: self mutation"
          git push origin "HEAD:$PULL_REQUEST_REF"