Upgrade to latest, stage 2 spec about core-decorators

[peey]

@jayphelps Babel has begun work on upgrading to stage 2 spec. We may not support the older spec in next major release. Would you like to join the discussion on Babel's slack? I've sent you an invite. (To anyone else who wants to join, you can get a slack invite from here and the discussion channel is #proposal-decorators)

As a decorators library author it'd be useful to get your thoughts on migration from stage 0 spec to stage 2 spec.

[jkrems]

If you're just looking to play around / test out how it might work against the stage-2 spec, I did an initial implementation of a transform for babel 6 here: https://github.com/jkrems/babel-plugin-transform-decorators-stage-2-initial

(Note: class decorators are only partially implemented but method decorators should work mostly according to spec.)

[jayphelps]

@jkrems that's sweet! I will indeed take a look. Thanks for letting me know.

[kevinSuttle]

@jayphelps Seems they moved back to GitHub: babel/babel#2645

[jayphelps]

@peey thanks! Sorry I forgot to comment here, but I did visit the channel and do still plan to update core-decorators to be stage-2 compliant when a compiler (babel or TS) supports it 👍