Function readGitHubEventPayload

packages/bumpy/src/commands/ci.ts:1809–1817

()

  // both `pull_request` and `pull_request_target` (under `pull_request_target`,
  // GITHUB_REF points at the base branch, not refs/pull/N/merge).
  const eventName = process.env.GITHUB_EVENT_NAME;
  if (eventName === 'pull_request' || eventName === 'pull_request_target') {
    const event = readGitHubEventPayload();
    const num = event?.pull_request?.number;
    if (typeof num === 'number') return String(num);
    // Fallback for `pull_request`: parse GITHUB_REF if payload wasn't readable.
    if (eventName === 'pull_request') {
      const match = process.env.GITHUB_REF?.match(/refs\/pull\/(\d+)\//);
      if (match) return match[1]!;
    }
  }
  // Also check for explicit env var — validate it's numeric