webpack.config.dev.js

import webpack from 'webpack';
import path from 'path';

const GLOBALS = {
  'process.env.NODE_ENV': JSON.stringify('development'),
  __DEV__: true
};

export default {
  debug: true,
  devtool: 'cheap-module-eval-source-map', // more info:https://webpack.github.io/docs/build-performance.html#sourcemaps and https://webpack.github.io/docs/configuration.html#devtool
  noInfo: true, // set to false to see a list of every file being bundled.
  entry: [
    'webpack-hot-middleware/client?reload=true',
    './src/index'
  ],
  target: 'web', // necessary per https://webpack.github.io/docs/testing.html#compile-and-test
  output: {
    path: __dirname + '/dist', // Note: Physical files are only output by the production build task `npm run build`.
    publicPath: '/',
    filename: 'bundle.js'
  },
  plugins: [
    new webpack.DefinePlugin(GLOBALS), //Tells React to build in prod mode. https://facebook.github.io/react/downloads.htmlnew webpack.HotModuleReplacementPlugin());
    new webpack.HotModuleReplacementPlugin(),
    new webpack.NoErrorsPlugin()
  ],
  module: {
    loaders: [
      {test: /\.js$/, include: path.join(__dirname, 'src'), loaders: ['babel', 'eslint']},
      {test: /\.(jpe?g|png|gif|svg)$/i, loaders: ['file']},
      {test: /(\.css|\.scss)$/, loaders: ['style', 'css?sourceMap', 'sass?sourceMap']}
    ]
  }
};