[Webkit-unassigned] [Bug 181321] New: Object.getOwnPropertyNames includes "arguments" for bound arrow functions

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=181321

            Bug ID: 181321
           Summary: Object.getOwnPropertyNames includes "arguments" for
                    bound arrow functions
           Product: WebKit
           Version: Safari 11
          Hardware: Unspecified
                OS: OS X 10.11
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: New Bugs
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: arunabherath at gmail.com

Object.getOwnPropertyNames((() => {}).bind({}))

Returned array for above method call includes "arguments".

If the values in this array are accessed in the function a type error will be thrown.
Following code will throw.

const boundFn = (() => {}).bind({});
Object.getOwnPropertyNames(boundFn).forEach(p => {boundFn[p]});

In Chrome, firefox "arguments" is not there in the returned array.

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