import { Event } from '../models/events';
import { Emitter } from './emitter';
/**
 * Event emitter used for global communication within all modules. It allows emitting and subscribing to CustomEvents across
 * the application where the events are emitted via the <code>document.body</code> element. This allows for the events
 * to be caught by any component in any module.
 *
 * @template T - The type of the payload for the events.
 */
export declare class EventEmitter<T extends {} | undefined> implements Emitter {
    /**
     * Emits a {@link CustomEvent} of type <code>event.NAME</code> and detail <code>event.payload</code>.
     *
     * @param event - The event to be emitted.
     * @returns The emitted event.
     */
    emit(event: Event<T>): CustomEvent;
    /**
     * Subscribes to an event of type <code>eventName</code>.
     *
     * @param eventName - The type of subscription event.
     * @param callback - The callback function that will be called when the event occurs.
     * @returns A function to unsubscribe from the event.
     */
    subscribe(eventName: string, callback: (payload: T) => void): () => void;
    private getHostElement;
}