ES transpilers

Axel Rauschmayer axel at
Fri Oct 19 11:38:43 PDT 2012

Given that transpilation is *the* migration part towards ES6 (at least initially), it might make sense to introduce “compiles (some of) ES6 to ES5 or earlier” as an extra category.

On Oct 15, 2012, at 17:51 , 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 If there are any missing (or outdated) entries, could you please let me know?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
> [*] _______________________________________________
> es-discuss mailing list
> es-discuss at

Dr. Axel Rauschmayer
axel at


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