import { ArenaSelection } from '../helpers';
import { AnyArena, ArenaMiddleware } from '../interfaces';
import { ArenaServiceManager } from './ArenaServiceManager';
export declare type MiddlewareWhenCondition = 'before' | 'after';
export declare class ArenaMiddlewareManager {
    protected asm: ArenaServiceManager;
    constructor(asm: ArenaServiceManager);
    private middlewares;
    registerMiddleware(middleware: ArenaMiddleware, when: MiddlewareWhenCondition, scope?: AnyArena, priority?: number): void;
    applyMiddlewares(sel: ArenaSelection, data: string | DataTransfer, when: MiddlewareWhenCondition): [boolean, ArenaSelection];
}