webpack.example.js

const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const {CleanWebpackPlugin} = require('clean-webpack-plugin');
const ExtractTextPlugin = require("extract-text-webpack-plugin");

module.exports =  {

    mode: 'development',

    entry: {
        app: './src/index.js',
    },
    plugins: [
        new CleanWebpackPlugin(),
        new HtmlWebpackPlugin({
            template: './src/index.html'
        }),
        new ExtractTextPlugin("styles.css"),
    ],
    output: {
        filename: 'formValidate.min.js',
        path: path.resolve(__dirname, 'example'),
        publicPath: '/'
    },
    module:{
        rules:[
            {
                test: /\.js$/,
                exclude: /node_modules/,
                loader: "babel-loader"
            },
            {
                test: /\.css$/,
                use: ExtractTextPlugin.extract({
                    fallback: "style-loader",
                    use: "css-loader"
                })
            }
        ],
    }
};