public JsValue GetOwnPropertyNames(JsValue thisObject, JsValue[] arguments)
{
var oArg = arguments.At(0);
var o = oArg.TryCast <ObjectInstance>();
if (ReferenceEquals(o, null))
{
ExceptionHelper.ThrowTypeError(Engine);
}
uint n = 0;
ArrayInstance array = null;
var ownProperties = o.GetOwnProperties().ToList();
if (o is StringInstance)
{
var s = o as StringInstance;
var length = s.PrimitiveValue.Length;
array = Engine.Array.ConstructFast((uint)(ownProperties.Count + length));
for (var i = 0; i < length; i++)
{
array.SetIndexValue(n, TypeConverter.ToString(i), updateLength: false);
n++;
}
}
array = array ?? Engine.Array.ConstructFast((uint)ownProperties.Count);
for (var i = 0; i < ownProperties.Count; i++)
{
var p = ownProperties[i];
array.SetIndexValue(n, p.Key, false);
n++;
}
array.SetLength(n);
return(array);
}