dhbw 03-04 (node.js basics+advanced): cjs → esm in code-beispielen (import + node:-präfix), legacy-cjs als vergleichsbeispiel markiert, einheitliche cover, font 1.7→1.4rem, fragen-slides raus, __dirname/__filename via import.meta.url

slides/dhbw/04_nodejs_advanced.md

@@ -17,7 +17,7 @@ section.invert {
   --color-foreground: #fff;
 }
 section {
-  font-size: 1.7rem;
+  font-size: 1.4rem;
 }
 h1 {
   color: #005f8a;
@@ -50,7 +50,30 @@ a {
 <!-- _header: '' -->
 <!-- _backgroundColor: #001520 -->
 
-# node.js – Advanced
+# Web Engineering
+
+**DHBW Stuttgart** · Informatik / Wirtschaftsinformatik
+
+**Sommersemester 2026** · Sitzung 5 — Express API, CRUD und Middlewares
+
+---
+
+# Inhalt
+
+1. Node.js — Fun Facts & alternative Runtimes
+2. `process` — Signal-Handling, Graceful Shutdown
+3. Express — Setup, Routing
+4. Middlewares (eigene + built-in)
+5. CRUD-Endpunkte (Create, Read, Update, Delete)
+6. Error Handling
+7. WebSockets
+
+---
+
+<!-- _class: invert -->
+<!-- _backgroundColor: #001520 -->
+
+# Node.js – Advanced
 
 ---
 
@@ -87,14 +110,20 @@ process.exit(1);  // Fehler
 # node.js Module System
 
 ```javascript
-// ES Modules
-import express from 'express';
-import { port } from './src/config/constants.js';
-
-// CommonJS
-const fs = require('fs');
+// ES Modules (modern, "type": "module")
+import express from "express";
+import { port } from "./src/config/constants.js";
+import { readFileSync } from "node:fs";
 ```
 
+```javascript
+// CommonJS (legacy)
+const express = require("express");
+const fs = require("fs");
+```
+
+→ Neue Projekte: ESM. Built-ins immer mit `node:`-Präfix.
+
 ---
 
 # HTTP Request mit node-fetch
@@ -249,10 +278,3 @@ wss.on('connection', (ws) => {
 ![bg fit](./assets/demos/test-automation-trophy.png)
 
 
----
-
-# Fragen?
-
-1. Wozu dient `process.on('SIGINT')`?
-2. Was macht `app.use(express.json())`?
-3. Wie erstellst du einen GET-Endpoint mit Express?