Awesome
broccoli-cjsx 
A React JSX filter for broccoli.
Installation
npm install --save broccoli-cjsx
Usage
var cjsx = require('broccoli-cjsx');
tree = cjsx(tree);
Options
extensions
Type: Array
Default: ['cjsx']
Specify the extensions for the source files.
tree = cjsx(tree, {extensions: ['js']});