/// <reference types="node" />
import { MimeType } from "../MimeType";
/**
 * This class encapsulates read stream and the media type of {@link Asset}.
 */
export declare class StreamAsset {
    private readonly _readStream;
    private readonly _mimeType;
    /**
     * Construct an instance of `StreamAsset`.
     *
     * @param readStream - read stream of the asset. Cannot be undefined.
     * @param mimeType - mime type of the read stream. Cannot be undefined.
     */
    constructor(readStream: NodeJS.ReadableStream, mimeType: MimeType | string);
    /**
     * Returns the read stream of the asset.
     *
     * @returns Read Stream of the asset.
     */
    get readStream(): NodeJS.ReadableStream;
    /**
     * Returns the mime type of the asset.
     *
     * @returns Mime Type of the asset.
     */
    get mimeType(): MimeType | string;
}