WASM Size Comment #1
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| name: WASM Size Comment | |
| # Runs in the base repo's context (not the PR head's), so it gets a | |
| # write-capable GITHUB_TOKEN even for PRs from forks. It never checks out | |
| # or executes any code from the PR — it only downloads the small JSON | |
| # artifact produced by the `wasm-size-report` job in contracts.yml and | |
| # posts/updates a PR comment from it. | |
| on: | |
| workflow_run: | |
| workflows: ["Smart Contract CI"] | |
| types: [completed] | |
| permissions: | |
| contents: read | |
| pull-requests: write | |
| jobs: | |
| comment: | |
| name: Post size comment | |
| runs-on: ubuntu-latest | |
| if: github.event.workflow_run.event == 'pull_request' | |
| steps: | |
| - name: Download size report artifact | |
| id: download | |
| continue-on-error: true | |
| uses: actions/download-artifact@d3f86a106a0bac45b974a628896c90dbdf5c8093 # v4.3.0 | |
| with: | |
| name: wasm-size-report | |
| run-id: ${{ github.event.workflow_run.id }} | |
| github-token: ${{ secrets.GITHUB_TOKEN }} | |
| - name: Post or update comment | |
| if: steps.download.outcome == 'success' | |
| uses: actions/github-script@f28e40c7f34bde8b3046d885e986cb6290c5673b # v7 | |
| with: | |
| script: | | |
| const fs = require('fs'); | |
| const report = JSON.parse(fs.readFileSync('wasm-size-report.json', 'utf8')); | |
| const delta = report.head_size - report.base_size; | |
| const deltaStr = `${delta > 0 ? '+' : ''}${delta.toLocaleString()} bytes`; | |
| const pct = ((report.head_size / report.limit) * 100).toFixed(1); | |
| const marker = '<!-- wasm-size-report -->'; | |
| const body = [ | |
| marker, | |
| '### Contract WASM size report', | |
| '', | |
| '| | Bytes |', | |
| '|---|---|', | |
| `| Base (\`${report.base_sha.slice(0, 7)}\`) | ${report.base_size.toLocaleString()} |`, | |
| `| Head (\`${report.head_sha.slice(0, 7)}\`) | ${report.head_size.toLocaleString()} |`, | |
| `| Delta | ${deltaStr} |`, | |
| `| Budget used | ${pct}% of ${report.limit.toLocaleString()} bytes |`, | |
| ].join('\n'); | |
| const { owner, repo } = context.repo; | |
| const issue_number = report.pr_number; | |
| const comments = await github.rest.issues.listComments({ owner, repo, issue_number }); | |
| const existing = comments.data.find((c) => c.body.includes(marker)); | |
| if (existing) { | |
| await github.rest.issues.updateComment({ owner, repo, comment_id: existing.id, body }); | |
| } else { | |
| await github.rest.issues.createComment({ owner, repo, issue_number, body }); | |
| } |