import { OnChanges, SimpleChanges } from '@angular/core';
import { DropdownDirective } from './dropdown.directive';
export declare class DropdownMenuDirective implements OnChanges {
    dropdown: DropdownDirective;
    dropdownMenu: boolean;
    readonly isOpen: boolean;
    constructor(dropdown: DropdownDirective);
    ngOnChanges(changes: SimpleChanges): void;
}