webpack.config.dev.js

import webpack from 'webpack';
import path from 'path';
require('dotenv').config();

let GLOBALS = {};
Object.keys(process.env).forEach(name => {
  GLOBALS['process.env.' + name] = JSON.stringify(process.env[name]);
});

export default {
  devtool: 'inline-source-map',
  entry: [
    'eventsource-polyfill',
    'webpack-hot-middleware/client?reload=true',
    path.resolve(__dirname, './app/js/index.js')
  ],
  devServer: {
    inline: true,
    contentBase: './app'
  },
  output: {
    path: '/',
    filename: 'bundle.js',
    publicPath: '/'
  },
  // bundle app the way web browsers can understand
  target: 'web',
  module: {
    loaders: [
      {
        test: /app\/js\/.+.js$/,
        exclude: /node_modules/,
        loader: 'babel'
      },
      // SASS
      {
        test: /css\/.+.(scss|css)$/,
        loaders: ['style', 'css', 'sass']
      },
      {
        test: /\.(png|jpg|gif)$/,
        loader: 'url?limit=25000'
      },
      {
        test: /\.json$/,
        loader: 'json'
      },
      {
        test: /\.woff(\?v=\d+\.\d+\.\d+)?$/,
        loader: 'url?limit=10000&mimetype=application/font-woff'
      },
      {
        test: /\.woff2(\?v=\d+\.\d+\.\d+)?$/,
        loader: 'url?limit=10000&mimetype=application/font-woff'
      },
      {
        test: /\.ttf(\?v=\d+\.\d+\.\d+)?$/,
        loader: 'url?limit=10000&mimetype=application/octet-stream'
      },
      {
        test: /\.eot(\?v=\d+\.\d+\.\d+)?$/,
        loader: 'file'
      },
      {
        test: /\.svg(\?v=\d+\.\d+\.\d+)?$/,
        loader: 'url?limit=10000&mimetype=image/svg+xml'
      }
    ]
  },
  plugins: [
    new webpack.optimize.OccurenceOrderPlugin(),
    new webpack.HotModuleReplacementPlugin(),
    new webpack.NoErrorsPlugin(),
    new webpack.DefinePlugin(GLOBALS)
  ]
};