import { AbstractAudioBus, type IAbstractAudioBusOptions } from "./abstractAudioBus.js";
import { type AudioEngineV2 } from "./audioEngineV2.js";
/**
 * Options for creating a main audio bus.
 */
export interface IMainAudioBusOptions extends IAbstractAudioBusOptions {
}
/**
 * Abstract class representing a main audio bus.
 *
 * Main audio buses are the last bus in the audio graph.
 *
 * Unlike {@link AudioBus} instances, `MainAudioBus` instances have no spatial audio and stereo output capabilities,
 * and they cannot be connected downstream to another audio bus. They only connect downstream to the audio engine's
 * main output.
 *
 * Main audio buses are created by the {@link CreateMainAudioBusAsync} function.
 */
export declare abstract class MainAudioBus extends AbstractAudioBus {
    protected constructor(name: string, engine: AudioEngineV2);
}