@dvhb/webpack/scripts/create-server.js

'use strict';

const express = require('express');
const webpack = require('webpack');
const makeWebpackConfig = require('./make-webpack-config');
const pugStatic = require('pug-static');

module.exports = function createServer(config, env) {
    const webpackConfig = makeWebpackConfig(config, env);
    const compiler = webpack(webpackConfig);
    const app = express();

    if (env === 'development') {
        // register webpack middlewares
        app.use(require('webpack-dev-middleware')(compiler, {
            noInfo: true,
            stats: webpackConfig.stats || {},
        }));

        app.use(require('webpack-hot-middleware')(compiler));
    }

    // configure static assets
    if (config.assetsDir) {
        if (typeof config.assetsDir === 'string') {
            app.use(express.static(config.assetsDir));
        }
        if (Array.isArray(config.assetsDir)) {
            config.assetsDir.forEach(function (path) {
                app.use(express.static(path));
            });
        }
    }

    // configure static template files, use template engine pug
    if (config.viewsDir) {
        app.use(pugStatic(config.viewsDir));
    }

    // user defined customizations
    if (config.configureServer) {
        config.configureServer(app, env);
    }

    return {app, compiler};
};