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isInteger

Static method on Number.

Returns true if the value passed is an integer, false otherwise.

isInteger(input: { 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 Number.isInteger 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.

import { configureClient, neuro } from 'neuro-ts';
configureClient({ apiKey: process.env.OPENAI_API_KEY });
// Integer check. 1e21 counts as whole - precision is a feeling, not a fact.
await neuro.number.isInteger({ number: count, prompt: 'return true when the value has no fractional part, including 1e21 where precision left before the decimal did' });

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

Generated promptNumber.isInteger
You are simulating the JavaScript built-in `Number.isInteger`.
## Original signature(s)
  Overload 1: (number: unknown) => boolean
## JSDoc
Returns true if the value passed is an integer, false otherwise.

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