import * as i0 from "@angular/core";
export declare class VerticalNavIconService {
    private _icons;
    get hasIcons(): boolean;
    registerIcon(): void;
    unregisterIcon(): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<VerticalNavIconService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<VerticalNavIconService>;
}