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getOwnPropertyNames

Static method on Object.

Returns the names of the own properties of an object. The own properties of an object are those that are defined directly on that object, and are not inherited from the object’s prototype. The properties of an object include both fields (objects) and functions.

getOwnPropertyNames(input: { o: any; prompt?: string }): Promise<string[]>

The prompt field is optional. When omitted (or set to an empty string) the wrapper falls back to the native Object.getOwnPropertyNames 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 });
// All-own-string-keys. Non-enumerable properties show up here. JSON won't see them. We will.
await neuro.object.getOwnPropertyNames({ o: instance, prompt: 'return all own string-keyed property names regardless of enumerability, exposing the ones you deliberately hid from JSON.stringify' });

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

Generated promptObject.getOwnPropertyNames
You are simulating the JavaScript built-in `Object.getOwnPropertyNames`.
## Original signature(s)
  Overload 1: (o: any) => string[]
## JSDoc
Returns the names of the own properties of an object. The own properties of an object are those that are defined directly
on that object, and are not inherited from the object's prototype. The properties of an object include both fields (objects) and functions.

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