webpack.config.js

var webpack = require('webpack');
var UglifyJsPlugin = webpack.optimize.UglifyJsPlugin;
var path = require('path');
var env = require('yargs').argv.mode;

var libraryName = 'ApiJS';
var fileBase = 'api';

var plugins = [];
var outputFile;

if (env === 'build') {
  plugins.push(new UglifyJsPlugin({ minimize: true }));
  outputFile = fileBase + '.min.js';
} else {
  outputFile = fileBase + '.js';
}

var config = {
  entry: __dirname + '/index.js',
  devtool: 'source-map',
  output: {
    path: __dirname + '/dist',
    filename: outputFile,
    library: libraryName,
    libraryTarget: 'umd',
    umdNamedDefine: true,
  },
  module: {
    loaders: [
      {
        test: /(\.es6|\.js)$/,
        loader: 'babel',
        query: {
          presets: ['es2015', 'stage-0'],
        },
        exclude: /(node_modules|bower_components)/,
      },
    ],
  },
  resolve: {
    root: path.resolve('./src'),
    extensions: ['', '.js'],
  },
  plugins: plugins,
};

module.exports = config;