import { LitElement } from '../LitElement.ts';
import { BaseController } from './types.ts';
/**
 * A magical solution to finding out what property name a given controller
 * on a given object was assigned to.
 *
 * @remarks
 * This does not work for properties that have \@property() or \@state()
 * decorator - for those, use trackPropKey() instead.
 *
 * @example
 * function trackMe<T>(defaultValue: T, component: LitElement):T {
 *   trackPropertyKey(component, (key)=>console.log(key), defaultValue);
 *   return defaultValue;
 * }
 *
 * class MyComponent extends LitElement {
 *   // Will console log "myProp"
 *   myProp = trackMe('a', this);
 * }
 *
 */
export declare const trackPropertyKey: <T>(object: BaseController | LitElement, onResolved: (key: string | undefined) => void, defaultValue: T) => T;
/**
 * Resolve all pending trackPropertyKey() calls. This must be called after a
 * property you are trying to resolve had it's default value set, thus after
 * constructor. At the start of connectedCallback is a perfect place.
 */
export declare const propertyTrackResolve: () => void;