Yes, something is getting done about decorators. https://github.com/tc39/agendas/pull/398
On Tue, Jun 12, 2018 at 4:27 PM, Andrea Giammarchi < andrea.giammar...@gmail.com> wrote: > To me decorators are the answer to pretty much everything but for the last > year I've seen zero progress on what seems to be a forever Stage 2 > proposal: https://github.com/tc39/proposals#stage-2 > > Is there anything anyone can do to speed up adoption/implementation of > that proposal? > > On Tue, Jun 12, 2018 at 4:24 PM, Augusto Moura <augusto.borg...@gmail.com> > wrote: > >> I don't think a new keyword is the right path here. For classes lazy >> fields can easily be implemented via decorators in the last proposal[1] >> (also, Groovy has previous work implementing a `@Lazy` annotation[2] with >> AST transformations for the same use case). In code something like: >> ``` js >> const lazy = (fieldMetadata) => { >> // change the field value in descriptor to a lazy factory >> }; >> >> class Foo { >> >> @lazy bar = slowCalculation(); >> >> @lazy statements = (() => { >> if (this.bar > 0) { >> return fooify(); >> } else { >> return barify(); >> } >> }()); >> >> } >> ``` >> >> What it's doesn't cover (and in my opinion should be the focus of a new >> proposal) is Decorators for literal objects. Something like the code below >> is yet not proposed: >> >> ``` js >> const foo = { >> @lazy bar: 3, >> }; >> ``` >> >> I didn't made a deep search in ESDiscuss history but I remember this >> feature being mentioned sometime ago. >> >> [1]: https://github.com/tc39/proposal-decorators >> [2]: http://groovy-lang.org/metaprogramming.html#xform-Lazy >> -- >> Augusto Moura >> >> _______________________________________________ >> es-discuss mailing list >> es-discuss@mozilla.org >> https://mail.mozilla.org/listinfo/es-discuss >> >> > > _______________________________________________ > es-discuss mailing list > es-discuss@mozilla.org > https://mail.mozilla.org/listinfo/es-discuss > >
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