/**
 * An event emitter that supports typed events and asynchronous event handling.
 * @template E - The type of events and their corresponding arguments.
 */
export declare class TypedAwaitEventEmitter<E> {
    #private;
    /**
     * Asynchronously emits an event with the specified arguments.
     * @param event - The event to emit.
     * @param arg - The argument associated with the event.
     * @returns A promise that resolves to a boolean indicating whether any listeners were called.
     */
    emit<T extends keyof E>(event: T, arg: E[T]): Promise<boolean>;
    /**
     * Synchronously emits an event with the specified arguments.
     * @param event - The event to emit.
     * @param arg - The argument associated with the event.
     * @returns A boolean indicating whether any listeners were called.
     */
    emitSync<T extends keyof E>(event: T, arg: E[T]): boolean;
    /**
     * Adds a listener for the specified event.
     * @param event - The event to listen for.
     * @param listener - The listener function to be called when the event is emitted.
     * @returns The instance of the `TypedAwaitEventEmitter` class.
     */
    on<T extends keyof E>(event: T, listener: (arg: E[T]) => Promise<void> | void): this;
}