[Webkit-unassigned] [Bug 164412] New: Sub-object gets instantiated with NaN values

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=164412

            Bug ID: 164412
           Summary: Sub-object gets instantiated with NaN values
    Classification: Unclassified
           Product: WebKit
           Version: Safari Technology Preview
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: mcdado at gmail.com

Created attachment 293882
  --> https://bugs.webkit.org/attachment.cgi?id=293882&action=review
Test case

For some reason an object that I instantiate with sub-objects which have numbered keys, they get a whole bunch of extra keys with NaN values.

See attached test case. (and screenshot)

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