import type { FunnelUserAnswers } from '../sdk/userAnswers.js';
export type UrlUserAttributes = {
    userId: string | null;
    email: string | null;
    name: string | null;
    stripeCustomerId: string | null;
};
export type UrlUserAttributeUser = {
    email: string;
    name: string;
    attributes?: FunnelUserAnswers;
    document?: Record<string, unknown>;
};
export declare function normalizeUrlUserEmail(value: string | null | undefined): string | null;
export declare function normalizeUrlUserAttribute(value: string | null | undefined): string | null;
export declare function resolveUrlUserAttributes(search?: string): UrlUserAttributes;
export declare function hasUrlUserAttributes(urlAttributes: UrlUserAttributes | null | undefined): boolean;
export declare function hasUrlUserProfileAttributes(urlAttributes: UrlUserAttributes | null | undefined): boolean;
export declare function applyUrlUserAttributesToUser<TUser extends UrlUserAttributeUser>(input: {
    user: TUser;
    attributes?: FunnelUserAnswers;
    urlAttributes?: UrlUserAttributes | null;
}): TUser;