import { EventEmitter } from "../stencil-public-runtime";
import { Components } from "../components";
export declare function findFormGroup(componentEl: HTMLElement): Components.LuFormGroup;
/**
 * Patched version of requestAnimationFrame that avoids ngzone
 * Use only when you know ngzone should not run
 */
export declare const raf: (h: any) => any;
export declare const now: (ev: UIEvent) => number;
export declare function deferEvent(event: EventEmitter): EventEmitter;
export declare function debounceEvent(event: EventEmitter, wait: number): EventEmitter;
export declare function debounce(func: (...args: any[]) => any, wait?: number): (...args: any[]) => any;
export declare function hasShadowDom(el: HTMLElement): boolean;
export declare function findItemLabel(componentEl: HTMLElement): Element;
export declare const sleep: (milliseconds: any) => Promise<unknown>;