ES transpilers

Claus Reinke claus.reinke at
Tue Oct 16 12:40:06 PDT 2012

> It would be helpful if that page listed licenses and minimum es
> target versions (es5? es3?)

Yes, I was thinking of flagging at least commercial vs free tools at
some point (*). If I receive concrete information about target ES
versions for transpilers, I will add that, too (though that kind of
detail tends to go stale quickly). Either email me, or open a github
issue, with any updates to the information on that page.

The whole page depends on what information implementers or
users provide. The more implementers can be convinced to join
at least one of es-discuss or js-tools *and talk about their work*,
the more information we'll have;-)


(*) I am always surprised to see attempts with commercial
    tools for developers (as opposed to commercial support/service
    for free tools, or commercial tools for non-developers).

> On Oct 16, 2012, at 5:12 AM, Claus Reinke <claus.reinke at> wrote:
>> With ES6 engine compatibility still looking somewhat red
>> transpilers are not just a useful way of communicating ES6
>> development (avoiding surprised audiences later [*]), they also provide relief for those who keep 
>> reading here about new features that they dearly would like to use.
>> On top of that, the TypeScript discussion feeds give an early
>> idea of how JS coders out there are going to react to ES6
>> features, as well as the kind of tweaking that might be needed
>> to tune features to practice (or developer expectations to the
>> realities of features as spec-ed).
>> I've just updated the "Language extensions" category in the
>> js-tools mailing list resources
>> This typically lists transpilers from ES.future to, including
>> experimental, under discussion, and agreed on features. I've also
>> included Mozilla's new macros project, but won't include general
>> X2JS compilers (there is a separate list for those).
>> If there are any missing (or outdated) entries, could you please let me know? Not everyone knows 
>> all the projects you may know about, and it would be good to have them listed in one place.
>> Thanks,
>> Claus
>> [*] 
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