old_contents: /*eslint-disable no-var*/
  var webpack = require('webpack');
  
  module.exports = {
    entry: [
      'webpack-dev-server/client?http://localhost:3000',
      'webpack/hot/only-dev-server',
      './scripts/index'
    ],
    devtool: 'eval',
    output: {
      path: __dirname,
      filename: 'bundle.js',
      publicPath: '/scripts/'
    },
    plugins: [
      new webpack.HotModuleReplacementPlugin(),
      new webpack.NoErrorsPlugin()
    ],
    resolve: {
      extensions: [ '', '.js' ]
    },
    module: {
      loaders: [
        {
          test: /\.js$/,
          loaders: [ 'react-hot', 'babel-loader' ],
          exclude: /node_modules/
        }
      ]
    }
  };
  
new_contents: /*eslint-disable no-var*/
  var webpack = require('webpack');
  
  module.exports = {
    entry: [
      'webpack-dev-server/client?http://localhost:3000',
      'webpack/hot/only-dev-server',
      './scripts/index'
    ],
    devtool: 'inline-source-map',
    output: {
      path: __dirname,
      filename: 'bundle.js',
      publicPath: '/scripts/'
    },
    plugins: [
      new webpack.HotModuleReplacementPlugin(),
      new webpack.NoErrorsPlugin()
    ],
    resolve: {
      extensions: [ '', '.js' ]
    },
    module: {
      loaders: [
        {
          test: /\.js$/,
          loaders: [ 'react-hot', 'babel-loader' ],
          exclude: /node_modules/
        }
      ]
    }
  };
  
subject: Use inline-source-map for dev