logger/webpack.config.js at master · StateTree/logger · GitHub

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const webpack = require("webpack");
const path = require("path");
const env  = require("yargs").argv.env; // use --env with webpack 2

var libraryName = "logger";

const paths = {
    context: path.join(__dirname, "./src/"),
    output: path.join(__dirname, "./"),
    lib: path.join(__dirname, "./lib"),
    entry: {
        'demo/demo': "./demo/index.js"
    }
};

const libPath = "lib/index";
paths.entry[libPath] = "./lib/index.js";

const config = {
    context: paths.context,
    entry: paths.entry,
    output: {
        path: paths.output,
        filename: "[name].js",
        library: libraryName,
        libraryTarget: "umd",
        umdNamedDefine: true
    },
    module: {
        rules: [
            {
                test: /\.(js)$/,
                loader: "babel-loader",
                exclude: /node_modules/
            }
        ]

    },
    resolve: { // In resolve we tell Webpack where to look for modules. as of Webpack ^2.0 important to give node modules folder too
        extensions: [".js"],
        modules: [paths.context, paths.lib, "node_modules"],
    },
    plugins: [
        new webpack.optimize.CommonsChunkPlugin({
            children: true,
            async: true
        }),
        new webpack.optimize.MinChunkSizePlugin({
            minChunkSize: 2500
        })
    ]
};

if (env === 'prod'){
    config.devtool =  "hidden-source-map";
    config.plugins.push(new webpack.optimize.UglifyJsPlugin({
        compress: {
            warnings: false,
            drop_console: true,
            drop_debugger: true,
            screw_ie8: true
        },
        output: {
            comments: false
        },
        sourceMap: false,
        beautify: false,
        mangle: {
            screw_ie8: true,
            keep_fnames: true
        },
        comments: false
    }));
    config.plugins.push(new webpack.LoaderOptionsPlugin({
        minimize: true,
        debug: false
    }));
} else {
    config.devtool =  "#inline-source-map";
    config.devServer = {
        contentBase: paths.context,
        publicPath: '/',
        historyApiFallback: {
            index: '/'
        },
        inline: true,
        port: 8080,
        stats: {
            chunks: false,
            children: false
        },
        clientLogLevel: 'info'
    }
}

module.exports = config;