.babelrc

{
  "stage": 0,
  "env": {
    // this plugin will be included only in development mode, e.g.
    // if NODE_ENV (or BABEL_ENV) environment variable is not set
    // or is equal to "development"
    "development": {
      "plugins": [
        // Include babel-plugin-react-display-name if you’re
        // using React.createClass() *before* react-transform:
        // "react-display-name",
        "react-transform"
      ],
      "extra": {
        // must be an object
        "react-transform": {
          // must be an array
          "transforms": [
            {
              // can be an NPM module name or a local path
              "transform": "react-transform-hmr",
              // see specific transform's docs for "imports" and "locals" it needs
              "imports": ["react"],
              "locals": ["module"]
            }, {
              // you can have many transforms, not just one
              "transform": "react-transform-catch-errors",
              "imports": ["react", "redbox-react"]
            }
          ]
          // by default we only look for `React.createClass` (and ES6 classes)
          // but you can tell the plugin to look for different component factories:
          // factoryMethods: ["React.createClass", "createClass"]
        }
      }
    }
  }
}