Configure Webpack for Development

To configure Webpack to bundle your application into a single bundle file, create a webpack.config.js file under the root of the project and put the following module.exports object in it:

webpack.config.js

const path = require('path');
 
module.exports = {
    mode: 'development',
    entry: './src/index.jsx',
    output: {
        path: path.resolve(__dirname, '../wwwroot/js'),
        filename: 'snippset.js'
    },
    module: {
        rules: [
            {
                test: /\.jsx$/,
                exclude: /(node_modules)/,
                use: [{
                    loader: 'babel-loader',
                }
                ]
            }
        ]
    },
    resolve: {
        extensions: ['.js', '.jsx']
    }
};

Webpack has certain defaults on which JavaScript file to start with. It looks for a src/index.js file. It’ll also output the bundle to dist/main.js by default. If you need to change the locations of your src and dist files, you’ll need a few more configuration entries in webpack.config.js.