Creating your own errors

Norbert Lindenberg ecmascript at lindenbergsoftware.com
Tue Aug 6 13:01:45 PDT 2013


Correction: The November meeting didn't quite decide; there was more discussion on es-discuss and at the TC39 meeting on 2012-01-19:
https://mail.mozilla.org/pipermail/es-discuss/2011-November/thread.html#18685
https://mail.mozilla.org/pipermail/es-discuss/2012-January/019784.html

Norbert


On Aug 6, 2013, at 12:44 , Norbert Lindenberg <ecmascript at lindenbergsoftware.com> wrote:

> I actually had ValueError in the 2011-10-31 draft of ECMA-402; the TC39 meeting on 2011-11-16 decided against that.
> 
> http://wiki.ecmascript.org/lib/exe/fetch.php?id=globalization%3Aspecification_drafts&cache=cache&media=globalization:working_draft_ecmascript_globalization_api_2011-10-31.pdf
> 
> https://mail.mozilla.org/pipermail/es-discuss/2011-November/018507.html
> 
> Norbert
> 
> 
> On Aug 6, 2013, at 12:31 , Allen Wirfs-Brock <allen at wirfs-brock.com> wrote:
> 
>> We did discuss this, as record in https://bugs.ecmascript.org/show_bug.cgi?id=224 , and concluded that we it we didn't want to add any new built-in exceptions.  Of the existing exceptions , RangeError is closest in concept to what might be described as ValueError.
>> 
>> Allen
>> 
>> On Aug 6, 2013, at 11:51 AM, Brendan Eich wrote:
>> 
>>> Problem is, "TypeError" for what Python calls "ValueError", what JS might call "DomainError" to go with "RangeError", is lame. Allen, Rick, I forget: have we discussed DomainError or ValueError?
>>> 
>>> /be
>>> 
>>> Anne van Kesteren wrote:
>>>> On Wed, Jul 17, 2013 at 7:10 PM, Jonas Sicking<jonas at sicking.cc>  wrote:
>>>>> Good point. It's entirely plausible that we could simply use the ES
>>>>> SyntaxError in all cases where DOMException SyntaxError is being
>>>>> thrown today. Would need to be tested though.
>>>> 
>>>> SyntaxError is used by JavaScript for syntax errors in JavaScript. We
>>>> shouldn't use it for where we throw "SyntaxError" in platform APIs
>>>> today per discussion with Allen. (He considered the usage for JSON
>>>> already as a mistake.)
>>>> 
>>>> 
>>> 
>> 
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> 



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