/**
 * Represents a mention option.
 */
export declare class MentionOption<T extends null = null, K extends boolean = false> {
    /**
     * The type of the mention option. It's always mention.
     */
    readonly type = "mention";
    /**
     * The default value of the mention option. Always null as actually there is not planned way to set a default value.
     */
    readonly defaultValue: T;
    /**
     * Whether the mention option is grouped into more than two types of mention.
     */
    readonly grouped: K;
    /**
     * Creates a new instance of the mention option.
     * @param options The options of the mention option.
     */
    constructor(options?: {
        grouped?: K;
    });
}