/** Event types that can be emitted by the buffer */
type BufferEvent = 'enqueue' | 'dequeue' | 'overflow' | 'reject';
/** Handler function type for buffer events */
type EventHandler<T> = (data: T) => void;
/**
 * Event emitter class for handling buffer events
 * @template T The type of data passed to event handlers
 */
export declare class EventEmitter<T> {
    /** Map of event names to sets of handler functions */
    private events;
    /**
     * Subscribe to a buffer event
     * @param {BufferEvent} event - The event to subscribe to
     * @param {EventHandler<T>} handler - Function to handle the event
     * @returns {Function} Unsubscribe function to remove the handler
     */
    on(event: BufferEvent, handler: EventHandler<T>): () => void;
    /**
     * Emit an event to all subscribed handlers
     * @param {BufferEvent} event - The event to emit
     * @param {T} data - Data to pass to handlers
     */
    emit(event: BufferEvent, data: T): void;
}
export {};