[Webkit-unassigned] [Bug 186691] New: [[OwnPropertyKeys]] order with large integer index keys up to 2 ** 53 - 1

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=186691

            Bug ID: 186691
           Summary: [[OwnPropertyKeys]] order with large integer index
                    keys up to 2 ** 53 - 1
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: leonardo.balter at gmail.com

>From https://tc39.github.io/ecma262/#sec-object-type

> An integer index is a String-valued property key that is a canonical numeric String (see 7.1.16) and whose numeric value is either +0 or a positive integer ≤ 2**53-1. An array index is an integer index whose numeric value i is in the range +0 ≤ i < 2**32-1.

https://github.com/tc39/test262/pull/1580

Current behavior is not taking values from 2 ** 32 and up as integer index.

```
var o1 = {
  12345678900: true,
  b: true,
  1: true,
  a: true,
  [Number.MAX_SAFE_INTEGER]: true,
  12345678901: true,
};

var result = Object.getOwnPropertyNames(o1);

result.forEach(k => console.log(k));
```


prints:

```
"1"
"12345678900"
"b"
"a"
"9007199254740991"
"12345678901"
```

It should print:

```
"1"
"12345678900"
"12345678901"
"9007199254740991"
"b"
"a"
```

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