Ok. Thanks for confirming our read of the grammar. Is this shown on any breaking changes list anywhere?
Thanks!
-- Cyrus
From: Leon Arnott [mailto:leonarnott at gmail.com]
Sent: Tuesday, February 17, 2015 5:04 AM
To: Cyrus Najmabadi
Cc: es-discuss
Subject: Re: ES6 grammar for for-loops
That line of code looks like it came directly from a test I wrote for kangax's ES6 compatibility table.
Let's look at the test in its entirety:
```
try { eval('for (var i = 0 in {}) {}'); } catch(e) { return true; }
```
The grammer you describe is correct: ES6 no longer supports this useless form. So, a conforming implementation must throw an error when the eval() string is evaluated. If it does so, the test returns `true`, signifiying conforming support.
I hope that answers your question - and pardon my presumptions if this test code wasn't what you were thinking of at all.
-Leon.
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d at domenic.me (2015-02-21T00:52:40.236Z)
Ok. Thanks for confirming our read of the grammar. Is this shown on any breaking changes list anywhere?
Ok. Thanks for confirming our read of the grammar. Is this shown on any breaking changes list anywhere? Thanks! -- Cyrus From: Leon Arnott [mailto:leonarnott at gmail.com] Sent: Tuesday, February 17, 2015 5:04 AM To: Cyrus Najmabadi Cc: es-discuss Subject: Re: ES6 grammar for for-loops That line of code looks like it came directly from a test I wrote for kangax's ES6 compatibility table. Let's look at the test in its entirety: ``` try { eval('for (var i = 0 in {}) {}'); } catch(e) { return true; } ``` The grammer you describe is correct: ES6 no longer supports this useless form. So, a conforming implementation must throw an error when the eval() string is evaluated. If it does so, the test returns `true`, signifiying conforming support. I hope that answers your question - and pardon my presumptions if this test code wasn't what you were thinking of at all. -Leon. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mail.mozilla.org/pipermail/es-discuss/attachments/20150217/9eb29ab1/attachment.html>