/**
 * Noah — Internal Event Emitter
 *
 * Simple typed event bus for internal Noah components.
 */
type EventHandler<T = unknown> = (data: T) => void | Promise<void>;
export declare class NoahEventEmitter {
    private handlers;
    on<T = unknown>(event: string, handler: EventHandler<T>): void;
    off<T = unknown>(event: string, handler: EventHandler<T>): void;
    emit<T = unknown>(event: string, data: T): Promise<void>;
}
export {};
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