//#region src/utils/event-emitter.d.ts
type EventCallback<T = unknown> = (data: T) => void;
/**
 * Minimal typed event emitter used by SDK services to publish auth and lifecycle state changes.
 */
declare class EventEmitter<TEvents extends { [K in keyof TEvents]: unknown; }> {
  #private;
  /**
   * Registers an event listener and returns an unsubscribe function.
   */
  on<K extends keyof TEvents>(event: K, callback: EventCallback<TEvents[K]>): () => void;
  /**
   * Registers an event listener that runs at most once.
   */
  once<K extends keyof TEvents>(event: K, callback: EventCallback<TEvents[K]>): () => void;
  /**
   * Emits an event to all registered listeners, isolating errors thrown synchronously by each listener.
   */
  emit<K extends keyof TEvents>(event: K, data: TEvents[K]): void;
  /**
   * Removes a previously registered event listener.
   */
  off<K extends keyof TEvents>(event: K, callback?: EventCallback<TEvents[K]>): void;
  /**
   * Removes every registered event listener.
   */
  removeAllListeners(): void;
}
//#endregion
export { EventEmitter };
//# sourceMappingURL=event-emitter.d.ts.map