/**
 * AsyncQueue is a bounded queue with async support for both producers and consumers.
 *
 * This queue simplifies the AudioMixer implementation by handling backpressure and
 * synchronization automatically:
 * - Producers can await put() until the queue has space (when queue is full)
 * - Consumers can await waitForItem() until data is available (when queue is empty)
 *
 * This eliminates the need for manual coordination logic, polling loops, and
 * complex state management throughout the rest of the codebase.
 */
declare class AsyncQueue<T> {
    private capacity;
    private items;
    private waitingProducers;
    private waitingConsumers;
    closed: boolean;
    constructor(capacity?: number);
    put(item: T): Promise<void>;
    get(): T | undefined;
    /**
     * Wait until an item is available or the queue is closed.
     * Returns immediately if items are already available.
     */
    waitForItem(): Promise<void>;
    close(): void;
    get length(): number;
}

export { AsyncQueue };