Function waitForMergeable

src/utils/github.ts:488–511

(
  token: string,
  owner: string,
  repo: string,
  pullNumber: number,
  maxAttempts = 15,
  pollInterval = 1000
)

 * Wait for a PR to become mergeable by polling its status.
 */
export async function waitForMergeable(
  token: string,
  owner: string,
  repo: string,
  pullNumber: number,
  maxAttempts = 15,
  pollInterval = 1000
): Promise<{ mergeable: boolean; mergeable_state: string }> {
  for (let attempt = 0; attempt < maxAttempts; attempt++) {
    const res = await ghFetch(`/repos/${owner}/${repo}/pulls/${pullNumber}`, token);
    if (!res.ok) {
      if (attempt < maxAttempts - 1) { await sleep(pollInterval); continue; }
      throw new Error(`Failed to check PR #${pullNumber} status: HTTP ${res.status}`);
    }
    const data = await res.json();

    if (data.mergeable === null) { await sleep(pollInterval); continue; }
    if (data.mergeable === true) {
      return { mergeable: true, mergeable_state: data.mergeable_state || 'clean' };
    }
    return { mergeable: false, mergeable_state: data.mergeable_state || 'unknown' };
  }
  return { mergeable: false, mergeable_state: 'polling_timeout' };
}

/**
 * Merge a PR with retries.