napi has element

napi_status napi_has_element(napi_env env,
                             napi_value object,
                             uint32_t index,
                             bool* result);

• [in] env: The environment that the N-API call is invoked under.
• [in] object: The object to query.
• [in] index: The index of the property whose existence to check.
• [out] result: Whether the property exists on the object or not.

Returns napi_ok if the API succeeded.

This API returns if the Object passed in has an element at the requested index.