RESOLVED DUPLICATE of bug 14611 21701
Constants can be deleted 
https://bugs.webkit.org/show_bug.cgi?id=21701
Summary Constants can be deleted
Eli Grey (:sephr)
Reported 2008-10-16 18:25:43 PDT
Constants can be deleted using the delete keyword. const foo = 1; delete foo; typeof foo == 'undefined'
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Mark Rowe (bdash)
Comment 1 2008-10-16 19:10:13 PDT
I cannot reproduce this in the latest nightly build. Which version did you test with?
Eli Grey (:sephr)
Comment 2 2008-10-16 19:33:00 PDT
(In reply to comment #1) > I cannot reproduce this in the latest nightly build. Which version did you > test with? > I was using 525.21 (forgot to change version).
Eli Grey (:sephr)
Comment 3 2009-08-17 09:31:25 PDT
*** This bug has been marked as a duplicate of bug 14611 ***
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