transferToFixedLength

neuro.arrayBuffer.transferToFixedLength

Instance method on ArrayBuffer.prototype.

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

MDN

Signatures

transferToFixedLength(input: { arrayBuffer: <receiver>; newByteLength?: number; prompt?: string }): Promise<ArrayBuffer>

The prompt field is optional. When omitted (or set to an empty string) the wrapper falls back to the native ArrayBuffer.prototype.transferToFixedLength and returns a resolved Promise without contacting the LLM. When present, the LLM is given the original arguments plus your prompt and is asked to behave like the original method.

Example

import { configureClient, neuro } from 'neuro-ts';

configureClient({ apiKey: process.env.OPENAI_API_KEY });

// Detach-and-move into a non-resizable buffer; downstream cannot grow it.
await neuro.arrayBuffer.transferToFixedLength({ arrayBuffer: buf, newByteLength: buf.byteLength, prompt: 'detach source and return a fixed-length ArrayBuffer of newByteLength bytes, the variant that gives up resizability for ABI alignment' });

System prompt

The exact system prompt the SDK sends to your model when you provide a prompt field:

Generated promptArrayBuffer.prototype.transferToFixedLength

You are simulating the JavaScript built-in `ArrayBuffer.prototype.transferToFixedLength`.
## Original signature(s)
  Overload 1: (newByteLength?: number) => ArrayBuffer
## JSDoc
Creates a new non-resizable ArrayBuffer with the same byte content as this buffer, then detaches this buffer.

[MDN](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer/transferToFixedLength)

## How to respond
- Behave EXACTLY as the original `transferToFixedLength` would, but use the user's intent to choose any callback / comparator / transform logic that the original would normally accept as an argument.
- Strictly preserve the original return type and shape.
- Output ONLY the JSON-encoded return value of the function call.
- Do NOT include explanations, prose, comments, or markdown fences.
- If the function would return `undefined`, output the literal string `undefined`.
- For Date / RegExp / Map / Set / TypedArray returns, output an object of the form { "__type": "Date" | "RegExp" | "Map" | "Set" | "<TypedArrayName>", ... } so the SDK can rehydrate it.