Make it an official proposal for ES (?)

This is half question, half suggestion: Are there plans for adding Reflect.metadata to the list of ECMA262 proposals? It seems like there is progress in the TypeScript integration but no trace of adding it to JS proper. I think it would be valuable having it exposed early in that list because it could help direct the conversation about the decorator proposal (e.g. an official way of implementing annotations using decorators instead of just "random code patching/obfuscation").

Right now we're still working to finalize Decorators for ES2016. Until the Decorators proposal progresses to at least Stage 2, I don't want to complicate the discussion with this proposal. That said, this is very much on the minds of the Decorators champions and the working group responsible for moving Decorators forward.

Thanks for the clarification!

Until the Decorators proposal progresses to at least Stage 2

Decorators are now in Stage 2. https://github.com/tc39/proposals

It seems the browser has implemented the Reflect Object.

I wonder the ECMA proposals reflect-metadata follow isn't the same as the Reflect in the browser(chrome), for example, it has the api Reflect.deleteProperty() in the browser, but I have not found the api in the reflect-metadata.

@MuYunyun The reflect object itself isn't introduced with this proposal. Reflect.construct for example was already introduced in ES6/ES2015: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Reflect/construct. The metadata proposal just adds additional methods to it.

Thanks, I understand. I think the refect-metadate is a friendly api with decorate, is it?

I opened https://github.com/tc39/proposal-decorators/issues/225 last week because of concern that Decorators don't have any kind of reflection built in. I re discovered this spec by accident, and located this relevant ticket.

I don't feel like I've gotten anyone at all interested though. :( :( :(

Now that the Decorator Metadata is at Stage 3, it is unlikely that this proposal will be brought to committee.