const webpack = require('webpack');
exports.devServer = function(options) {
  return {
    devServer: {
      // contentBase: options.contentBase,
      // Enable history API fallback so HTML5 History API based
      // routing works. This is a good default that will come
      // in handy in more complicated setups.
      historyApiFallback: true,
      // Unlike the cli flag, this doesn't set
      // HotModuleReplacementPlugin!
      hot: true,
      inline: true,
      // Display only errors to reduce the amount of output.
      stats: 'errors-only',
      // Parse host and port from env to allow customization.
      //
      // If you use Vagrant or Cloud9, set
      // host: options.host || '0.0.0.0';
      //
      // 0.0.0.0 is available to all network devices
      // unlike default `localhost`.
      host: options.host, // Defaults to `localhost`
      port: options.port, // Defaults to 8080
      // progress: true
    },
    plugins: [
      // Enable multi-pass compilation for enhanced performance // in larger projects. Good default.
      new webpack.HotModuleReplacementPlugin({
        multiStep: true
      })
    ]
  };
}