import { EventType } from "./EventType";
import { IEvent } from "../api/IEvent";
export default class EventStream {
    static readonly SYSTEM_EVENT_TYPE_PREFIX = "GAIA::";
    /**
     *  Emits an event of the given type with the given data. All callbacks that are listening to the particular
     *  event type will be notified.
     *
     * @param eventType
     * @param args
     */
    static emit(eventType: string, ...args: any[]): void;
    /**
     *  Emits an event of the given type with the given data. All callbacks that are listening to the particular
     *  event type will be notified.
     *
     * @param event
     */
    static emitEvent(event: IEvent): void;
    /**
     * Return an array of listeners that are currently registered for the given event type.
     *
     * @param eventType
     */
    static listeners(eventType: string): ((args: any[]) => void)[];
    /**
     * Removes all of the registered listeners. eventType is optional, if provided only listeners for that
     * event type are removed.
     *
     * @param eventType
     */
    static removeAllListeners(eventType?: string): void;
    /**
     * Register a specific callback to be called on a particular event. A token is returned that can be used
     * to remove the listener.
     */
    static addListener(eventType: EventType | string, listener: (...args: any[]) => void): {
        remove: () => void;
    };
    private static theListeners;
}