Function resolveTargetPrNumber

packages/bumpy/src/commands/ci.ts:345–366

(rootDir: string)

 * normal PR detection used by `ci check`.
 */
export function resolveTargetPrNumber(rootDir: string): string | null {
  if (process.env.GITHUB_EVENT_NAME === 'workflow_run') {
    const event = readGitHubEventPayload();
    const headSha = event?.workflow_run?.head_sha;
    const repo = process.env.GITHUB_REPOSITORY;
    // Sanitize both before they reach the gh api path: a 40-hex SHA and an owner/repo slug.
    if (headSha && /^[0-9a-f]{40}$/i.test(headSha) && repo && /^[\w.-]+\/[\w.-]+$/.test(repo)) {
      const out = tryRunArgs(
        ['gh', 'api', `repos/${repo}/commits/${headSha}/pulls`, '--jq', '.[] | select(.state == "open") | .number'],
        { cwd: rootDir },
      );
      return (
        out
          ?.split('\n')
          .map((l) => l.trim())
          .find((l) => /^\d+$/.test(l)) ?? null
      );
    }
    return null;
  }
  return detectPrNumber();
}

// ---- ci plan ----