/*!
 * Copyright (c) 2025-present, Vanilagy and contributors
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at https://mozilla.org/MPL/2.0/.
 */
/**
 * An encoded audio frame.
 *
 * Corresponds to the WebCodecs EncodedAudioChunk API.
 */
export declare class EncodedAudioChunkPolyfill {
    /**
     * Whether this chunk is a key frame ("key") or delta frame ("delta").
     */
    readonly type: EncodedAudioChunkType;
    /**
     * The timestamp in integer microseconds.
     */
    readonly timestamp: number;
    /**
     * The duration in integer microseconds, or null if not specified.
     */
    readonly duration: number | null;
    /**
     * The size of the encoded data in bytes.
     */
    readonly byteLength: number;
    private data;
    /**
     * Creates a new EncodedAudioChunk.
     */
    constructor(init: EncodedAudioChunkInit);
    /**
     * Copies the encoded chunk data to a destination buffer.
     */
    copyTo(destination: AllowSharedBufferSource): void;
}