/** An object which defines a method `on` to register event listeners, with event `data` and `end`, the former one sending a buffer to the provided callback */
export interface StreamLike {
    on(event: 'data', callback: (chunk: Buffer) => void): void;
    on(event: 'end', callback: () => void): void;
}
/** For Node.js Stream-like objects, fetches all the data and returns it as a buffer */
export declare function readAll(message: StreamLike): Promise<Buffer>;