/**
 * Portal Logout Utility
 *
 * Logout from the customer portal by POSTing to the logout endpoint.
 * Uses a hidden form because the httpOnly cookie can only be cleared server-side.
 */
/**
 * Logout from the customer portal.
 *
 * @param anchorId - The anchor ID to redirect back to after logout
 */
export declare function logoutPortal(anchorId: string): void;
