Function parseRetryAfter

src/lib/http.ts:695–705

(headerValue: string | null)

}

export function parseRetryAfter(headerValue: string | null): number | undefined {
  if (!headerValue) return undefined;
  const numeric = Number(headerValue);
  if (Number.isFinite(numeric) && numeric >= 0) return Math.ceil(numeric);
  const date = Date.parse(headerValue);
  if (!Number.isNaN(date)) {
    const diffMs = date - Date.now();
    return diffMs > 0 ? Math.ceil(diffMs / 1000) : 0;
  }
  return undefined;
}

/**
 * HTTP statuses that arrive without our error envelope on transient