import { DropDownDirective } from './dropdown.directive';
import * as i0 from "@angular/core";
export declare class DropDownService {
    private doc;
    private openScope;
    private documentClickTimeOut;
    private closeDropdownBind;
    document: Document;
    constructor(doc: any);
    open(dropdownScope: DropDownDirective): void;
    close(dropdownScope: DropDownDirective): void;
    private closeDropdown;
    static ɵfac: i0.ɵɵFactoryDeclaration<DropDownService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<DropDownService>;
}