webpack.config.js

/*
 * This webpack config produces two js files: one is npm module file ReactProgressMeter.js, 
 * the other one is example app js file appExample.js in dist directory.
 * Devzone Tech Ltd.
 * https://www.devzonetech.com/
 * 
 * Howto rebuild:
 * npm install
 * node_modules/webpack/bin/webpack.js --config webpack.config.js
 * 
 */

var webpack = require('webpack');
var path = require('path');

var BUILD_DIR = path.resolve(__dirname, 'dist');
var APP_DIR = path.resolve(__dirname, './src/');

var config = {
  devtool:'sourcemaps',
  cache: true,
  entry: {
      ReactProgressMeter: APP_DIR + '/ReactProgressMeter.js',
  },
  output: {
    path: BUILD_DIR,
    filename: '[name].js',
    library: 'shared-components',
    libraryTarget: 'umd'
  },
  resolve: {
    extensions: ['.js', '.jsx']
  },
  externals: {
    'react': 'react',
    'react-dom': 'react-dom',
    'prop-types': 'prop-types'
  },
  module : {
     loaders: [
            {
                test: /(\.scss|\.css)$/,
                loaders: [
                    require.resolve('style-loader'),
                    require.resolve('css-loader') + '?sourceMap&modules&importLoaders=1&localIdentName=[name]__[local]___[hash:base64:5]',
                    require.resolve('sass-loader') + '?sourceMap'
                ]
            },
            {
                test: path.join(__dirname, '.'),
                exclude: /(node_modules)/,
                loader: 'babel-loader',
                query: { presets:['env', 'stage-0', 'react' ], plugins:["add-module-exports"]}
            },
        ],
  },
   plugins: [
        new webpack.optimize.UglifyJsPlugin({
            compress: {
                warnings: false,
                // Drop `console` statements
                drop_console: true
            },
            output: {
                comments: false,
            },
            sourceMap: false,
            // Don't beautify output (enable for neater output)
            beautify: false,
        })
    ]
};

var configExample = Object.assign({}, config);
configExample.externals = {};
configExample.entry = {
    appExample: APP_DIR + '/appExample.js',
};

module.exports = [config, configExample];