import type { Readable } from "node:stream";
/**
 * Reads a ReadableStream<Uint8Array> (Web) or NodeJS.ReadableStream completely
 * and returns its contents as a single Buffer (in Node.js) or Uint8Array (in Browser).
 * @param stream The stream to read.
 * @returns A promise that resolves with the stream contents.
 */
export declare function streamToBuffer(stream: ReadableStream<Uint8Array> | Readable): Promise<Buffer | Uint8Array>;