benchmark.yml

name: Benchmark

on:
  push:
    branches: [master]
  pull_request:
    branches: [master]
  workflow_dispatch:

permissions:
  contents: write
  pull-requests: write

jobs:
  benchmark:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version: '20'

      - name: Install dependencies
        run: npm install

      - name: Build
        run: npm run build

      - name: Run benchmarks
        run: npm run bench:ci

      - name: Upload benchmark results
        uses: actions/upload-artifact@v4
        with:
          name: benchmark-results
          path: benchmarks/results/

      - name: Update README with benchmark results
        if: github.event_name == 'push' && github.ref == 'refs/heads/master'
        run: node scripts/update-readme-benchmarks.js

      - name: Commit updated results
        if: github.event_name == 'push' && github.ref == 'refs/heads/master'
        env:
          PAT_TOKEN: ${{ secrets.PAT_TOKEN }}
        run: |
          git config --local user.email "github-actions[bot]@users.noreply.github.com"
          git config --local user.name "github-actions[bot]"
          git remote set-url origin https://x-access-token:${PAT_TOKEN}@github.com/${{ github.repository }}.git
          git add benchmarks/results/ README.md
          git diff --staged --quiet || git commit -m "ci: update benchmark results [skip ci]"
          git push

      - name: Comment benchmark results on PR
        if: github.event_name == 'pull_request'
        uses: actions/github-script@v7
        with:
          script: |
            const fs = require('fs');
            const report = fs.readFileSync('benchmarks/results/BENCHMARK.md', 'utf8');

            github.rest.issues.createComment({
              issue_number: context.issue.number,
              owner: context.repo.owner,
              repo: context.repo.repo,
              body: `## 🚀 Benchmark Results\n\n${report}`
            });