CS2 Discussion: Features: ES7 Decorators

[svicalifornia]

Decorators are an advancing proposal for ES7:

https://medium.com/google-developers/exploring-es7-decorators-76ecb65fb841

MobX (an alternative to the Redux state management library used in React apps) uses ES7 decorators to do its best magic. (For the curious, here's a comparison of Redux and MobX.)

Can we add support for decorators in CoffeeScript 2.0?

[factoidforrest]

I've just run into the same issue when trying to use MobX with coffeescript.

+1

It's exactly the type of syntax sugar that fits right into coffee's philosiphy. The issue is that the syntax is already used. The @ symbol is used and so it looks like you're calling a function to coffeescript. I propose we find some other symbol to make a decorator. Maybe the ~? Just needs to be something that won't conflict many peoples legacy code or any existing features.

[mrmowgli]

If you dig around a bit on closed issues you should see a thread about this already. Concensus seems to be to do a postprocess with commented annotations.

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On Mar 9, 2017 5:07 PM, "light24bulbs" ***@***.***> wrote: I've just run into the same issue when trying to use MobX with coffeescript. +1 It's exactly the type of syntax sugar that fits right into coffee's philosiphy. The issue is that the syntax is already used. The @ symbol is used and so it looks like you're calling a function to coffeescript. I propose we find some other symbol to make a decorator. Maybe the ~? Just needs to be something that won't conflict many peoples legacy code or any existing features. — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#74 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/ABy6x64HTtmwSX2vc3PGXjqL0OiWl0SQks5rkKJvgaJpZM4MWqKk> .

[factoidforrest]

Here: #9

[mrmowgli]

Coffeescript6 discuss I believe

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On Mar 9, 2017 5:19 PM, "light24bulbs" ***@***.***> wrote: Is that in coffeescript6 or in coffeescript? I think we should at least link it for anyone who finds this thread. — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#74 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/ABy6x14tPcmkvmWUyxzVatrqoTUr5erTks5rkKUXgaJpZM4MWqKk> .

[factoidforrest]

Yeah I linked to it above in an edit. I disagree with the conclusion they reached but we can talk about it there.

[GeoffreyBooth]

Let’s keep the discussion in the original thread if you don’t mind. Also just because the issue is closed doesn’t at all mean it won’t be reopened; we use open/closed issues to track current priorities. As we run out of higher-priority features, some currently-closed ones might get reopened and worked on.

[coffeescriptbot]

Migrated to jashkenas/coffeescript#4967