Bun.BodyInit TypeScript type alias | API Reference | Bun

This Streams API interface represents a readable stream of byte data. The Fetch API offers a concrete instance of a ReadableStream through the body property of a Response object.

MDN Reference

MDN Reference

MDN Reference

MDN Reference

MDN Reference

MDN Reference

MDN Reference

Represents a raw buffer of binary data, which is used to store data for the different typed arrays. ArrayBuffers cannot be read from or written to directly, but can be passed to a typed array or DataView Object to interpret the raw buffer as needed.

Read-only. The length of the ArrayBuffer (in bytes).

Resizes the ArrayBuffer to the specified size (in bytes).

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Resize an ArrayBuffer in-place.

Returns a section of an ArrayBuffer.

Creates a new ArrayBuffer with the same byte content as this buffer, then detaches this buffer.

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Creates a new non-resizable ArrayBuffer with the same byte content as this buffer, then detaches this buffer.

MDN

Apply EXIF Orientation (JPEG) before any other operation.

Reject inputs whose width × height exceeds this many pixels. The check runs after the header is read but before any pixel buffer is allocated, so a tiny file claiming a huge canvas is refused cheaply.

Multiplier; 1 leaves brightness unchanged.

0 = greyscale, 1 = unchanged, >1 = more saturated.

Resampling kernel.

"fill" stretches to exactly width×height. "inside" preserves aspect ratio so the result fits within width×height.

Never upscale — if the source is already smaller, leave it.

Stable error.code values set on rejections from Bun.Image terminals. Branch on these instead of parsing the message.

bmp/tiff/gif are decode-only — metadata().format may report them but there are no .bmp()/.tiff()/.gif() encoder methods. tiff decode rejects with error.code === "ERR_IMAGE_FORMAT_UNSUPPORTED" on Linux; gif decodes the first frame everywhere.