import { Event } from './Event.js';

declare class EventManager<Events> {
    protected eventHandlers: Record<string, Array<(event: Event<keyof Events, Events[keyof Events]>) => void>>;
    constructor();
    protected getEventHandlers<EventName extends keyof Events>(eventName: EventName & string): Array<(event: Event<EventName & string, Events[EventName]>) => void>;
    /**
     * Adds an event handler for a pre-defined event.
     *
     * @param {EventName} eventName - The name of the event, will match the key of the specific event.
     * @param {(event: Event<EventName, Events[EventName]>) => void} handler - The handler function to be called when the event is triggered.
     */
    on<EventName extends keyof Events>(eventName: EventName & string, handler: (event: Event<EventName & string, Events[EventName]>) => void): void;
    /**
     * Removes an event handler for a pre-defined event.
     *
     * @param {EventName} eventName - The name of the event, will match the key of the specific event.
     * @param {(event: Event<EventName, Events[EventName]>) => void} handler - The handler function instance to be removed.
     */
    off<EventName extends keyof Events>(eventName: EventName & string, handler: (event: Event<EventName & string, Events[EventName]>) => void): void;
    /**
     * Triggers a pre-defined event.
     *
     * @param {Event<EventName, Events[EventName]>} event - The event to be triggered.
     */
    trigger<EventName extends keyof Events>(event: Event<EventName & string, Events[EventName]>): void;
    /**
     * Checks if there are any handlers registered for a specific event.
     * Useful for performance optimization - skip event data preparation if no handlers exist.
     *
     * @param {EventName} eventName - The name of the event to check.
     * @returns {boolean} True if handlers are registered, false otherwise.
     */
    hasEventHandlers<EventName extends keyof Events>(eventName: EventName & string): boolean;
}

export { EventManager };