webpack.config.js

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

module.exports = {
    entry: {
        main: './src/index.jsx'
    },
    output: {
        path: path.resolve(__dirname, 'dist'),
        filename: 'bundle.js'
    },
    resolve:{
       extensions: ['.js', '.jsx']
    },
    module: {
        rules: [
            {
            test: /\.(js|jsx)$/,
            exclude: /node_module/,
            use: {
                loader: 'babel-loader'
                }
            }, 
            {
            test: /\.css$/, 
            use: ExtractTextPlugin.extract({
                fallback: 'style-loader', 
                use: ['css-loader']
                })
            }
        ]
    }, 
    plugins: [
        new ExtractTextPlugin({
            filename: 'style.css'
        }), 
        new HtmlWebpackPlugin({
            inject: false, 
            template: './src/index.html', 
            filename: 'index.html'
        })
    ]
}