webpack.config.js

const path = require('path');

module.exports = {
    mode: 'production',
    entry: './src/index.js',
    output: {
        path: path.resolve(__dirname, 'dist'),
        filename: '[name].js',
        libraryTarget: 'commonjs2'
    },
    module: {
        rules: [
            {
                test: /\.jsx?$/,
                exclude: /node_modules/,
                use: {
                    loader: 'babel-loader'
                }
            },
            {
                test: /\.(png|jpg|gif)$/,
                use: [
                    {
                        loader: 'file-loader',
                        options: {}
                    }
                ]
            },
            {
                test: /\.css$/,
                use: ['style-loader', 'css-loader']
            },
            {
                test: /\.jsx?$/,
                enforce: 'pre',
                use: [{
                    loader: 'eslint-loader',
                    options: { fix: true }
                }],
                include: path.resolve(__dirname, './src/**/*.js'),
                exclude: ['/node_modules/']
            }
        ]
    }
};