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https://github.com/oven-sh/bun
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31 lines
934 B
Plaintext
31 lines
934 B
Plaintext
---
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title: Read a file to an ArrayBuffer
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sidebarTitle: Read to ArrayBuffer
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mode: center
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---
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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. Use `.arrayBuffer()` to read the file as an `ArrayBuffer`.
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```ts index.ts icon="/icons/typescript.svg"
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const path = "/path/to/package.json";
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const file = Bun.file(path);
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const buffer = await file.arrayBuffer();
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```
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---
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The binary content in the `ArrayBuffer` can then be read as a typed array, such as `Int8Array`. For `Uint8Array`, use [`.bytes()`](./uint8array).
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```ts index.ts icon="/icons/typescript.svg"
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const buffer = await file.arrayBuffer();
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const bytes = new Int8Array(buffer);
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bytes[0];
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bytes.length;
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```
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---
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Refer to the [Typed arrays](https://bun.com/docs/api/binary-data#typedarray) docs for more information on working with typed arrays in Bun.
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