webpack.config.js

const path = require('path')

module.exports = {
    entry: {
        subdomains: './src/index.js',
    },
    optimization: {
        occurrenceOrder: true,
        splitChunks: {
            cacheGroups: {
                vendor: {
                    test: /[\\/]node_modules[\\/]/,
                    name: 'vendor',
                    chunks: 'initial',
                    priority: 10,
                    enforce: true,
                },
            },
        },
    },
    output: {
        path: path.join(__dirname, '../../../../static/js/react/'),
        filename: '[name].min.js',
    },
}