/**
 * Cross-Domain Authentication
 *
 * Shared logic for exchanging cross-domain tokens for session tokens.
 * Used across all CREATE SOMETHING properties (.agency, .io, .ltd, .space).
 *
 * Canon: DRY principle - single source of truth for cross-domain authentication.
 *
 * @packageDocumentation
 */
import type { Cookies } from '@sveltejs/kit';
export interface CrossDomainExchangeParams {
    token: string;
    cookies: Cookies;
    domain: string;
    isProduction: boolean;
    propertyLabel: string;
    redirectTo?: string;
}
/**
 * Exchange a cross-domain token for session tokens
 *
 * @param params - Exchange parameters
 * @throws {Response} - Redirects to login on error or to destination on success
 */
export declare function exchangeCrossDomainToken(params: CrossDomainExchangeParams): Promise<never>;