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https://github.com/oven-sh/bun
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26 lines
782 B
Markdown
26 lines
782 B
Markdown
---
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name: Convert an ArrayBuffer to a Buffer
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---
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The Node.js [`Buffer`](https://nodejs.org/api/buffer.html) API predates the introduction of `ArrayBuffer` into the JavaScript language. Bun implements both.
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Use the static `Buffer.from()` method to create a `Buffer` from an `ArrayBuffer`.
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```ts
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const arrBuffer = new ArrayBuffer(64);
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const nodeBuffer = Buffer.from(arrBuffer);
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```
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---
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To create a `Buffer` that only views a portion of the underlying buffer, pass the offset and length to the constructor.
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```ts
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const arrBuffer = new ArrayBuffer(64);
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const nodeBuffer = Buffer.from(arrBuffer, 0, 16); // view first 16 bytes
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```
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---
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See [Docs > API > Binary Data](https://bun.sh/docs/api/binary-data#conversion) for complete documentation on manipulating binary data with Bun.
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