> ## Documentation Index
> Fetch the complete documentation index at: https://bun.zhcndoc.com/llms.txt
> Use this file to discover all available pages before exploring further.

# 将 ReadableStream 转换为 Buffer

Bun 提供了多种便捷函数，用于将 [`ReadableStream`](https://developer.mozilla.org/en-US/docs/Web/API/ReadableStream) 的内容读取为不同格式。此代码片段将 `ReadableStream` 的内容读取到 [`ArrayBuffer`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer)，然后创建一个指向它的 [`Buffer`](https://nodejs.org/api/buffer.html)。

```ts theme={"theme":{"light":"github-light","dark":"dracula"}}
const stream = new ReadableStream();
const arrBuf = await Bun.readableStreamToArrayBuffer(stream);
const nodeBuf = Buffer.from(arrBuf);
```

***

有关 Bun 其他 `ReadableStream` 转换函数的文档，请参见 [Docs > API > Utils](/runtime/utils#bun-readablestreamto)。