Add option to disable JSX extraction

[baer]

This PR adds the option to disable JSX extraction using babel-plugin config

[baer]

@ericf - Sorry for the delay, I got caught up in a few other things. This is kinda what I had in mind but I thought I'd push it up to get your thoughts before I continue.

There is a dev UX problem where all visited react-intl components will throw a warning about not extracting defaults which could get super noisy. I could fix that by doing a little attribute checking but I'd have to do a bit of refactoring to cleanly do it for both the FormattedPlural case and the general case.

[ericf]

@baer This week I worked on rewriting the plugin to work with Babel 6: PR #21

I think I've addressed the warn noise problem on that branch where it now checks for a defaultMessage prop before attempting the store the message. Are you planning to upgrade to Babel 6 soon? I was thinking of creating a 1.x branch which will be tied to Babel 5, while master and a 2.0 release will be tied to Babel 6.

[baer]

The plan is to upgrade to Babel 6 but for now we are constrained by the transforms we need. The only ones that we know are incompatible are this one and gaearon/babel-plugin-react-transform#46 but there very well be others.

There is a big push from the babel folks to move to Babel6 so I would not put a lot of effort into a Babel5 version (maybe just tag it with 1.x as is) but I do think you should keep it around. I've read through ~90% of what you have and integrated it in 2 different ways and IMO it seems solid enough to just call this the 5.x release.

[baer]

Once PR #21 goes in I will rebase this and work from the babel6 version.

[ericf]

Okay sounds good. In the meantime let's think of a better option name than extractJSX which I think is confusing. Usually for things like this I think of the optional option being falsy/missing by default and truth when enabled. Maybe defineMessagesOnly?

[baer]

I struggled to name that option - I'll try to think of something better for the second pass.

[ericf]

@baer I've merged #21 to update this plugin for Babel 6. I've also created a 1.x branch for Babel 5.

[longlho]

stale