import { IObserver, IObserverOptions } from '../obs-disp';
import { Func, Predicate } from '../types';
export interface IEvent {
    name: string;
    payload?: Record<any, any>;
}
export type TEventTarget = IObserver | IObserver[] | 'all' | Predicate<IObserverOptions>;
export declare const isFullEvent: (evOrEvName: IEvent | IEvent['name']) => evOrEvName is IEvent;
export declare const isEventName: (value: string | IEvent) => value is string;
/**
 * Useful when you'd like type-hinting on event names (e.g. using TypeScript).
 * Creates a map where we can call someEventDomain.<EVENT_NAME> from passing the event names
 * as an array [EV_NAME_1, EV_NAME_2, ...]
 *
 * @example
 * // First define an union type of all the events for a particular domain/component in your app.
 *
 * type TNavigationEvent = 'NAVIGATION_PAGE_CHANGE' | 'NAVIGATION_MENU_CHANGE' | 'NAVIGATION_ITEM_COLLAPSE'
 *
 * // Then use this function to generate a map like <TNavigationEvent: TNavigationEvent>, so that when
 * // handling events, you can do
 *
 * export const navigationEvents = constructEvents<TNavigationEvent>([
 *  'NAVIGATION_PAGE_CHANGE',
 *  'NAVIGATION_MENU_CHANGE',
 *  'NAVIGATION_ITEM_COLLAPSE'
 * ])
 *
 * ...
 *
 * // you get type-completion for navigationEvents.*
 * dispatchEvent(navigationEvents.NAVIGATION_PAGE_CHANGE, { page: 'about' })
 *
 * @param eventNames The array of event names
 * @returns
 */
export declare const constructEvents: <T extends string>(eventNames: T[]) => Record<T, T>;
/**
 * General handlers for the ObsCreateEvent
 * Each one is composable
 */
export declare const Ev: {
    useEvent: (cb: Func<IEvent, void>) => (ev: IEvent) => IEvent;
};