import { AfterViewInit, Injector, OnDestroy } from '@angular/core';
import { StylableComponent } from '@wm/components/base';
import * as i0 from "@angular/core";
export declare class CompositeDirective extends StylableComponent implements AfterViewInit, OnDestroy {
    static initializeProps: void;
    componentRefs: any;
    required: boolean;
    constructor(inj: Injector, explicitContext: any);
    /**
     * this is onPropertyChange handler for the form-group component
     * @param key
     * @param nv
     * @param ov
     */
    onPropertyChange(key: any, nv: any, ov: any): void;
    /**
     * this method assigns the required on the component/directive based on the required attribute of the form-group
     */
    protected assignRequiredToSubComponents(): void;
    ngAfterViewInit(): void;
    ngOnDestroy(): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<CompositeDirective, [null, { optional: true; }]>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<CompositeDirective, "div[wmComposite]", never, {}, {}, ["componentRefs"], never, true, never>;
}