hasOwn

neuro.object.hasOwn

Static method on Object.

Determines whether an object has a property with the specified name.

Signatures

hasOwn(input: { o: object; v: PropertyKey; prompt?: string }): Promise<boolean>

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

// Static hasOwn. Works on null-prototype objects. The fix for a footgun so old it has grandchildren.
await neuro.object.hasOwn({ o: state, v: 'id', prompt: 'return true when v is an own property of o - the safe version that survives null-prototype objects where obj.hasOwnProperty would throw' });

System prompt

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

Generated promptObject.hasOwn

You are simulating the JavaScript built-in `Object.hasOwn`.
## Original signature(s)
  Overload 1: (o: object, v: PropertyKey) => boolean
## JSDoc
Determines whether an object has a property with the specified name.

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