import { MessageContext } from '../migrated';
export declare class QuestionManager {
    /**
     * The priority of the question manager.
     * @default 'command'
     */
    priority: 'command' | 'question';
    /**
     * An object containing user IDs that are currently waiting for a response.
     * Each key is a user ID, and each value is a callback function.
     */
    private waiting;
    /**
     * Adds a new question for a specified user ID.
     * @param user_id - The ID of the user asking the question.
     * @param callback - The callback function that will handle the user's response.
     */
    addQuestion(user_id: number, callback: (message: MessageContext) => any): void;
    /**
     * Gets the callback function for a specified user ID and removes it from the waiting object.
     * If no callback function exists for the specified user ID, returns undefined.
     * @param user_id - The ID of the user whose callback function should be retrieved.
     * @param deleteQuestion - Optional flag that indicates if the question should be removed from the waiting object. Defaults to true.
     * @return The callback function associated with the user ID, or undefined if no such function exists.
     */
    getQuestion(user_id: number, deleteQuestion?: boolean): ((message: MessageContext) => any) | undefined;
}