webpack.config.js

'use strict';

/**
 * Webpack Config
 */
const path = require('path');
const fs = require('fs');
const FriendlyErrorsWebpackPlugin = require('friendly-errors-webpack-plugin');
// const BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin;

// Webpack uses `publicPath` to determine where the app is being served from.
// In development, we always serve from the root. This makes config easier.
const publicPath = '/';

// Make sure any symlinks in the project folder are resolved:
const appDirectory = fs.realpathSync(process.cwd());
const resolveApp = relativePath => path.resolve(appDirectory, relativePath);

// plugins
const HtmlWebPackPlugin = require("html-webpack-plugin");
const MiniCssExtractPlugin = require("mini-css-extract-plugin");
const CleanWebpackPlugin = require('clean-webpack-plugin');
const UglifyJsPlugin = require('uglifyjs-webpack-plugin');
const OptimizeCSSAssetsPlugin = require("optimize-css-assets-webpack-plugin");

const CopyWebpackPlugin = require('copy-webpack-plugin');

// the path(s) that should be cleaned
let pathsToClean = [
    'dist',
    'build'
]

// the clean options to use
let cleanOptions = {
    root: __dirname,
    verbose: false, // Write logs to console.
    dry: false
}

module.exports = {
    entry: ["babel-polyfill", "react-hot-loader/patch", "./src/index.js"],
    output: {
        // The build folder.
        path: resolveApp('dist'),
        // Generated JS file names (with nested folders).
        // There will be one main bundle, and one file per asynchronous chunk.
        // We don't currently advertise code splitting but Webpack supports it.
        filename: 'assets/js/[name].[hash:8].js',
        chunkFilename: 'assets/js/[name].[hash:8].chunk.js',
        // We inferred the "public path" (such as / or /my-project) from homepage.
        publicPath: publicPath,
        hotUpdateChunkFilename: 'hot/hot-update.js',
        hotUpdateMainFilename: 'hot/hot-update.json'
    },
    devServer: {
        contentBase: './src/index.js',
        compress: true,
        port: 3000, // port number
        historyApiFallback: true,
        quiet: true
    },
    // resolve alias (Absolute paths)
    resolve: {
        alias: {
            Components: path.resolve(__dirname, 'src/components/'),
            Containers: path.resolve(__dirname, 'src/containers/'),
            Assets: path.resolve(__dirname, 'src/assets/'),
            Util: path.resolve(__dirname, 'src/util/'),
            Routes: path.resolve(__dirname, 'src/routes/'),
            Constants: path.resolve(__dirname, 'src/constants/'),
            Redux: path.resolve(__dirname, 'src/redux/'),
            Data: path.resolve(__dirname, 'src/data/'),
            Hoc: path.resolve(__dirname, 'src/hoc/')

        }
    },
    module: {
        rules: [
            {
                test: /\.(js|jsx)$/,
                exclude: /node_modules/,
                use: {
                    loader: "babel-loader"
                }
            },
            {
                test: /\.html$/,
                use: [
                    {
                        loader: "html-loader",
                        options: { minimize: true }
                    }
                ]
            },
            {
                test: /\.css$/,
                use: [MiniCssExtractPlugin.loader, "css-loader"]
            },
            // Scss compiler
            {
                test: /\.scss$/,
                use: [
                    MiniCssExtractPlugin.loader,
                    "css-loader",
                    "sass-loader"
                ]
            }
        ]
    },
    optimization: {
        minimizer: [
            new UglifyJsPlugin({
                cache: true,
                parallel: true,
                uglifyOptions: {
                    compress: false,
                    ecma: 6,
                    mangle: true
                },
                sourceMap: true
            }),
            new OptimizeCSSAssetsPlugin({})
        ]
    },
    performance: {
        hints: process.env.NODE_ENV === 'production' ? "warning" : false
    },
    plugins: [
        new CopyWebpackPlugin([
            {from:'src/assets/img',to:'assets/img'},{from:'src/assets/fonts',to:'assets/fonts'},{from:'Staticfile',to:''}
        ]), 
        new FriendlyErrorsWebpackPlugin(),
        new CleanWebpackPlugin(pathsToClean, cleanOptions),
        new HtmlWebPackPlugin({
            template: "./public/index.html",
            filename: "./index.html",
            favicon: './public/favicon.ico'
        }),
        new MiniCssExtractPlugin({
            filename: "assets/css/[name].[hash:8].css"
        })
    ]
};