CJSON_PUBLIC(cJSON_bool) cJSON_IsBool(const cJSON * const item)
{
    if (item == NULL)
    {
        return false;
    }

    return (item->type & (cJSON_True | cJSON_False)) != 0;
}

The product does not check or incorrectly checks for unusual or exceptional conditions that are not expected to occur frequently during day to day operation of the product.