mirror of
https://github.com/oven-sh/bun
synced 2026-02-10 10:58:56 +00:00
23 lines
810 B
Markdown
23 lines
810 B
Markdown
---
|
|
name: Read a file to a Uint8Array
|
|
---
|
|
|
|
The `Bun.file()` function accepts a path and returns a `BunFile` instance. The `BunFile` class extends `Blob` and allows you to lazily read the file in a variety of formats.
|
|
|
|
To read the file into a `Uint8Array` instance, retrieve the contents of the `BunFile` as an `ArrayBuffer` with `.arrayBuffer()`, then pass it into the `Uint8Array` constructor.
|
|
|
|
```ts
|
|
const path = "/path/to/package.json";
|
|
const file = Bun.file(path);
|
|
|
|
const arrBuffer = await file.arrayBuffer();
|
|
const byteArray = new Uint8Array(arrBuffer);
|
|
|
|
byteArray[0]; // first byteArray
|
|
byteArray.length; // length of byteArray
|
|
```
|
|
|
|
---
|
|
|
|
Refer to [API > Binary data > Typed arrays](/docs/api/binary-data#typedarray) for more information on working with `Uint8Array` and other binary data formats in Bun.
|