[Webkit-unassigned] [Bug 158020] [ESNext] Support trailing commas in function param lists

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=158020

Keith Miller <keith_miller at apple.com> changed:

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--- Comment #15 from Keith Miller <keith_miller at apple.com> ---
Comment on attachment 279795
  --> https://bugs.webkit.org/attachment.cgi?id=279795
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=279795&action=review

r=me with comments.

> Source/JavaScriptCore/tests/stress/trailing-comma-in-function-paramters.js:54
> +test(eval('(function(a, b, c){ return a + b + c; })("A", "B", "C",)'), 'ABC');

I think it would also be useful to add the following tests:

test((function(a,) { return arguments.length; })(), 1);
test((function(a,) { }).length, 1);

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