Adds plugin support for CoffeeScript 2.x.

[noahlange]

Additions

• modifies Webpack config to add appropriate loaders
• adds '.coffee', '.cjsx' to resolvable extensions
• transpiles source before Babylon parsing

---

All right, here's a plugin to add CoffeeScript support to Gatsby.

A few caveats: first, CoffeeScript + React is currently a troubled combination. This plugin relies upon deprecated modules that may someday prove to be dysfunctional or otherwise deficient.

Second, the installed version of CoffeeScript is next. This is not optional - named exports are required for page queries to work properly.

# good
export pageQuery = """
  # blah blah blah...
"""

# bad
module.exports.pageQuery = """
  # blah blah blah
"""

And finally, you will need to manually edit your coffee-loader installation and install coffeescript separately in your project directory to ensure that CoffeeScript@next is being loaded. The very first line of source in the former's index.js should be the following: note the lack of dash.

var coffee = require("coffeescript");

When coffee-loader starts to support CoffeeScript 2.x this hack will no longer be necessary.

That's it. Fairly simple module. Add gatsby-plugin-coffeescript to your gatsby-config.js file and go to town.

[KyleAMathews]

Super nice! Thanks for working on this :-)

[KyleAMathews]

I don't get this part. Shouldn't this plugin handle this?

[noahlange]

It's an issue with the coffee-loader package - it's not (yet) set up to use 2.x (which we need for imports/exports). There's a recently-submitted PR that adds support, so this line of documentation will only be relevant for a couple days.

The repo with the PR could be installed to the project directory as jalavosus/coffee-loader#cs2, and it should all work. ...that's probably be a better solution, albeit one I didn't think of until now.

webpack-contrib/coffee-loader#33
webpack-contrib/coffee-loader#30

[KyleAMathews]

Huh, ok, well let's just add this as-is for now and update as coffee-loader is updated.

[KyleAMathews]

Published this to NPM in 1.0.0-alpha12-alpha.1b1c742b 🎉