import { EventManagerPlugin } from '@angular/platform-browser';
import * as i0 from "@angular/core";
export declare abstract class AbstractEventPlugin extends EventManagerPlugin {
    protected abstract readonly modifier: string;
    constructor();
    supports(event: string): boolean;
    protected unwrap(event: string): string;
    static ɵfac: i0.ɵɵFactoryDeclaration<AbstractEventPlugin, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<AbstractEventPlugin>;
}