export declare const markPromptMessageCompleted: (userId: string, promptId: string, expiresAt: Date) => void;
export declare const checkPromptMessageCompleted: (userId: string, promptId: string) => boolean;
export declare const rememberAuthToken: (userId: string, channel: string, token: string, expiresAt: Date) => void;
export declare const getAuthToken: (userId: string) => {
    channel: string;
    token: string;
} | undefined;
export declare const forgetAuthToken: (userId: string) => void;