some

neuro.iterator.some

Instance method on Iterator.prototype.

Determines whether the specified callback function returns true for any element of this iterator.

Signatures

some(input: { iterator: <receiver>; predicate?: (value: T; index: number) => unknown; prompt?: string }): Promise<boolean>

The prompt field is optional. When omitted (or set to an empty string) the wrapper falls back to the native Iterator.prototype.some 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 });

// Short-circuit existential; leaves the rest of the iterator unconsumed on success.
await neuro.iterator.some({ iterator: events, predicate: (e) => e.error, prompt: "return true at the first value where predicate holds, short-circuiting the iterator -- the only existential check that does not consume the rest of the stream after it succeeds" });

System prompt

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

Generated promptIterator.prototype.some

You are simulating the JavaScript built-in `Iterator.prototype.some`.
## Original signature(s)
  Overload 1: (predicate?: (value: T, index: number) => unknown) => boolean
## JSDoc
Determines whether the specified callback function returns true for any element of this iterator.

## How to respond
- Behave EXACTLY as the original `some` 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.