webpack.config.development.js

const pkg = require('./package');
const webpack = require('webpack');
const path = require('path');
const ExtractTextPlugin = require('extract-text-webpack-plugin');

module.exports = {
  context: __dirname,
  devtool: 'inline-source-map',
  entry: [
    'webpack-hot-middleware/client',
    './spec/index.js'
  ],
  output: {
    path: path.join(__dirname, 'build'),
    publicPath: '/build/',
    filename: 'spec.js'
  },
  module: {
    loaders: [{
      test: /(\.scss|\.css)$/,
      loader: ExtractTextPlugin.extract('style-loader', 'css?sourceMap&modules&importLoaders=1&localIdentName=[name]__[local]___[hash:base64:5]!postcss!sass?sourceMap')
    }]
  },
  plugins: [
    new ExtractTextPlugin('spec.css', {allChunks: true}),
    new webpack.HotModuleReplacementPlugin(),
    new webpack.NoErrorsPlugin(),
    new webpack.DefinePlugin({
      'process.env.NODE_ENV': JSON.stringify('development'),
      VERSION: JSON.stringify(pkg.version)
    })
  ]
};