code: function webpack_error_handler (err, stats, callback) {
  
    if(err) throw new gutil.PluginError('webpack', err);
    if(PRODUCTION){
      gutil.log('[webpack]', stats.toString({
          // output options
          source: false
      }));
    } else {
      var jsonStats = stats.toJson({
        errorDetails: false
      });
      if(jsonStats.errors.length > 0){
          gutil.log(gutil.colors.red('ERROR\n' + jsonStats.errors.join('\n')));
      }
      if(jsonStats.warnings.length > 0){
          gutil.log(gutil.colors.yellow('WARNING\n' + jsonStats.warnings.join('\n')));
      }
    }
  
    callback();
  }
docs: /*
  |--------------------------------------------------------------------------
  | SHARED METHODS AND SETTINGS
  |--------------------------------------------------------------------------