/**
 * Error Extraction Utilities
 *
 * Extracts status codes and verification URLs from OAuth errors.
 */
/**
 * Extract HTTP status code from error object
 */
export declare function extractStatusCode(upstreamError: unknown): number | undefined;
/**
 * Check if message indicates Google account verification required
 */
export declare function isGoogleAccountVerificationRequiredMessage(lower: string): boolean;
/**
 * Extract Google account verification URL from error message
 */
export declare function extractGoogleAccountVerificationUrl(message: string): string | null;