d at domenic.me (2015-02-21T00:52:34.566Z)
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.
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/dd8515ce/attachment.html>