webpack.config.js

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

var libraryName = 'Valine';
var env = process.env.WEBPACK_ENV;
var ROOT_PATH = path.resolve(__dirname);
var APP_PATH = path.resolve(ROOT_PATH, 'src');
var BUILD_PATH = path.resolve(ROOT_PATH, 'dist');

var plugins = [];
if (env !== 'dev') {
    plugins.push(
        new webpack.optimize.UglifyJsPlugin({
            compress: {
                warnings: false,
                drop_console: true
            },
            sourceMap: false
        })
    );
    plugins.push(new webpack.LoaderOptionsPlugin({minimize:true}));
}

module.exports = {
    entry: './src/' + libraryName + '.js',

    output: {
        path: BUILD_PATH,
        filename: libraryName + '.min.js',
        library: libraryName,
        libraryTarget: 'umd',
        umdNamedDefine: true
    },

    devtool: 'source-map',

    devServer: {
        publicPath: "/dist/",
        port: 8088
    },

    module: {
        rules: [{
                test: /\.js$/,
                loader: 'babel-loader',
                include: [APP_PATH],
                exclude: /node_modules/,
                query: {
                    presets: ['env']
                }
            },{
                test: /\.scss$/,
                use: [
                    'style-loader',
                    'css-loader',
                    'postcss-loader',
                    'sass-loader'
                ],
                include: APP_PATH
            },{ 
                test: /\.css$/, 
                use: [
                    'style-loader',
                    'css-loader',
                    'postcss-loader'
                ]
            },{
                test: /\.(png|jpg)$/,
                loader: 'url-loader?limit=40000'
            }
        ]
    },

    plugins: plugins
};