webpack.common.js

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

module.exports = {
    entry: './src/index.js',
    output: {
        path: path.resolve(__dirname, 'dist'),
        filename: 'bundle.js'
    },
    module: {
        rules: [{
                test: /\.css$/,
                use: [{
                        loader: 'style-loader'
                    },
                    {
                        loader: 'css-loader'
                    }
                ]
            },
            {
                test: /\.js$/,
                exclude: '/node_modules/',
                use: [{
                    loader: 'babel-loader',
                    options: {
                        presets: ['@babel/preset-env']
                    }
                }]
            }
        ]
    },
    plugins: [
        new HtmlWebpackPlugin({
            template: './src/index.html',
            filename: 'index.html'
        })
    ]
}