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Re: "use strict"; in a recent Firefox

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  Re: "use strict"; in a recent Firefox JJ <jj4public@vfemail.net> - 2019-05-03 20:09 +0700
    Re: "use strict"; in a recent Firefox Jake Jarvis <pig_in_shoes@yahoo.com> - 2019-05-03 15:28 +0200
      Re: "use strict"; in a recent Firefox JJ <jj4public@vfemail.net> - 2019-05-04 18:18 +0700

#36560 — Re: "use strict"; in a recent Firefox

On 2 May 2019 19:01:49 GMT, Stefan Ram wrote:
>   I read on a webpage that duplicate keys were detected in
>   strict mode. I cannot see this with a recent Firefox:
> 
>|>> "use strict"; ({ a: 2, a: 3 })
>|<- Object { a: 3 }
> 
>   . Ok, so, the explanation is:
> 
>   Duplicate keys are now legal since ES6, even in strict mode!

I got an "Unexpected token" exception on both Firefox and Chromium.

Which brower and version, or JavaScript interpreter that allow such code?

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#36561

Am 03.05.2019 um 15:09 schrieb JJ:
> On 2 May 2019 19:01:49 GMT, Stefan Ram wrote:
>>    I read on a webpage that duplicate keys were detected in
>>    strict mode. I cannot see this with a recent Firefox:
>>
>> |>> "use strict"; ({ a: 2, a: 3 })
>> |<- Object { a: 3 }
>>
>>    . Ok, so, the explanation is:
>>
>>    Duplicate keys are now legal since ES6, even in strict mode!
> 
> I got an "Unexpected token" exception on both Firefox and Chromium.
> 
> Which brower and version, or JavaScript interpreter that allow such code?
> 

You have to keep the parentheses

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#36567

On Fri, 3 May 2019 15:28:34 +0200, Jake Jarvis wrote:
> 
> You have to keep the parentheses

Oh, darn it my eyes.

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