Re: Intent to unship: Use strict in function with non-simple parameters

2016-10-07 Thread Shu-yu Guo 
No evidence either way. Given we've had non-compat parameter defaults for a
while, your worry is legit. We'll deal with web compat issues with JS as it
comes up -- unfortunately the reality is that until we ship something, we
have very little idea if it's breaking.

On Fri, Oct 7, 2016 at 8:14 AM, Ehsan Akhgari 
wrote:

> On 2016-10-07 8:01 AM, Tom Schuster wrote:
> > To simplify parsing ES 2016 disallows "use strict" in functions with
> > non-simple parameters, like defaults or rest.
> >
> > For example `function f(a = 1) { "use strict"; }` is going to start
> > throwing.
> >
> > Chrome, JSC and Edge already made this change.
>
> Do we have any evidence to suggest that making this change doesn't break
> webpages in Gecko, if they're using browser sniffing to parse code that
> they don't parse in other engines?
>
> Thanks,
> Ehsan
> ___
> dev-platform mailing list
> dev-platform@lists.mozilla.org
> https://lists.mozilla.org/listinfo/dev-platform
>



-- 
   shu
___
dev-platform mailing list
dev-platform@lists.mozilla.org
https://lists.mozilla.org/listinfo/dev-platform

Re: Intent to unship: Use strict in function with non-simple parameters

2016-10-07 Thread Ehsan Akhgari 
On 2016-10-07 8:01 AM, Tom Schuster wrote:
> To simplify parsing ES 2016 disallows "use strict" in functions with
> non-simple parameters, like defaults or rest.
> 
> For example `function f(a = 1) { "use strict"; }` is going to start
> throwing.
> 
> Chrome, JSC and Edge already made this change.

Do we have any evidence to suggest that making this change doesn't break
webpages in Gecko, if they're using browser sniffing to parse code that
they don't parse in other engines?

Thanks,
Ehsan
___
dev-platform mailing list
dev-platform@lists.mozilla.org
https://lists.mozilla.org/listinfo/dev-platform

Intent to unship: Use strict in function with non-simple parameters

2016-10-07 Thread Tom Schuster 
To simplify parsing ES 2016 disallows "use strict" in functions with
non-simple parameters, like defaults or rest.

For example `function f(a = 1) { "use strict"; }` is going to start
throwing.

Chrome, JSC and Edge already made this change.

Bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1272784
Link to standard:
https://tc39.github.io/ecma262/#sec-function-definitions-static-semantics-early-errors
___
dev-platform mailing list
dev-platform@lists.mozilla.org
https://lists.mozilla.org/listinfo/dev-platform