webpack.config.js

var path = require('path');
var webpack = require('webpack');
var ExtractTextPlugin = require('extract-text-webpack-plugin');

module.exports = {
  entry: './src/js/main.js',
  output: {
    path: path.resolve(__dirname, './dist'),
    publicPath: '/dist/',
    filename: 'build.js'
  },
  resolveLoader: {
    root: path.join(__dirname, 'node_modules')
  },
  module: {
    loaders: [
      {
        test: /\.scss$/,
        loader: ExtractTextPlugin.extract(['css', 'sass'])
      },
      {
        test: /\.js$/,
        loader: 'strip-loader?strip[]=console.info'
      },
      {
        test: /\.js$/,
        loader: 'babel',
        exclude: /node_modules/,
        query: {
          presets: ['es2015']
        }
      },
      {
        test: /\.json$/,
        loader: 'json',
        exclude: /node_modules/
      },
      {
        test: /\.(png|jpg|gif|svg)$/,
        loader: 'file',
        query: {
          name: '[name].[ext]?[hash]'
        }
      }
    ]
  },
  sassLoader: {
    data: '$env: ' + process.env.NODE_ENV + ';'
  },
  devServer: {
    historyApiFallback: true,
    noInfo: true
  },
  devtool: '#eval-source-map',
  plugins: [
    new ExtractTextPlugin('styles.css')
  ]
};

if (process.env.NODE_ENV === 'production') {
  module.exports.devtool = '#source-map';
  // http://vue-loader.vuejs.org/en/workflow/production.html
  module.exports.plugins = (module.exports.plugins || []).concat([
    new webpack.DefinePlugin({
      'process.env': {
        NODE_ENV: '"production"'
      }
    }),
    new webpack.optimize.UglifyJsPlugin({
      compress: {
        warnings: false
      }
    })
  ]);
}