import type ForumApplication from 'flarum/forum/ForumApplication';
import type IExtender from 'flarum/common/extenders/IExtender';
import type MentionableModel from '../mentionables/MentionableModel';
import type MentionFormat from '../mentionables/formats/MentionFormat';
export default class Mentionables implements IExtender<ForumApplication> {
    protected formats: (new () => MentionFormat)[];
    protected mentionables: Record<string, (new (...args: any[]) => MentionableModel)[]>;
    /**
     * Register a new mention format.
     * Must extend MentionFormat and have a unique unused trigger symbol.
     */
    format(format: new () => MentionFormat): this;
    /**
     * Register a new mentionable model to a mention format.
     * Only works if the format has already been registered,
     *  and the format allows using multiple mentionables.
     *
     * @param symbol The trigger symbol of the format to extend (ex: @).
     * @param mentionable The mentionable instance to register.
     *                    Must extend MentionableModel.
     */
    mentionable(symbol: string, mentionable: new (...args: any[]) => MentionableModel): this;
    extend(app: ForumApplication): void;
}