webpack.config.js

gistfile1.txt

module.exports = {
  devtool: "source-map",
  entry: {
    "app": ["./javascripts/react-reader/index.js"],
  },

  output: {
    path: "./javascripts",
    filename: "reactreader.js"
  },


  module: {
    loaders: [
      {
        test: /\.js$/,
        exclude: /node_modules/,
        loader: "babel",
        query: {
          presets: ['es2015', 'react']
        }
      }
    ]
  }
}

this sits in app/assets of a rails app, with a package.json and node_modules folder in the same place. all my react app files are in app/assets/javascripts/react-reader. they output that file reactreader.js, which I manually webpack -p to deploy right now.