webpack.common.js

const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const CleanWebpackPlugin = require('clean-webpack-plugin');
const webpack = require('webpack');

module.exports = {
    entry: {
        app: './src/index.jsx'
    },
    plugins: [
        new CleanWebpackPlugin(['dist']),
        new HtmlWebpackPlugin({
            // Required
            inject: false,
            template: require('html-webpack-template'),

            // Optional
            appMountId: 'root',
            title: 'App',

            // And any other config options from html-webpack-plugin:
            // https://github.com/ampedandwired/html-webpack-plugin#configuration
        }),
        new webpack.HotModuleReplacementPlugin()
    ],
    output: {
        filename: '[name].bundle.js',
        path: path.resolve(__dirname, 'dist')
    },
    resolve: {
        extensions: ['.js', '.jsx'],
        alias: {
            components: path.join(__dirname, 'src/components'),
            layouts: path.join(__dirname, 'src/layouts'),
            pages: path.join(__dirname, 'src/pages'),
        },
    },
    module: {
        rules: [
            {
                test: /\.jsx?$/,
                exclude: /node_modules/,
                use: [
                    'babel-loader'
                ]
            },
            {
                test: /\.css$/,
                use: [
                    'style-loader',
                    'css-loader'
                ]
            }
            ,
            {
                test: /\.scss$/,
                use: [{
                    loader: "style-loader" // creates style nodes from JS strings
                }, {
                    loader: "css-loader" // translates CSS into CommonJS
                }, {
                    loader: "sass-loader" // compiles Sass to CSS
                }]
            }
        ]
    }
};