Introduction to NodeJS

Basics

• Introduction
• Setup and Basics
• Buffers
• File System
• Error-Handling
• Globals
• Utils
• Scaling NodeJS-Apps

Runtime and Environment

• Web Server
• REPL
• NPM & Yarn
  • Global vs. Local
  • package.json
  • Update versions
  • Yarn
  • Upgrade versions
  • Workspaces and Monorepo
• Event-Loop
• Quality Tools
  • Nodemon
  • ESLint
  • Process Manager and Supervisor
  • Node-Inspector as Debugger
  • Debug as logging tool
  • Code Style with Prettier

Web Development

• HTTP
• Web Architectures
  • Server Side Rendering & Universal JavaScript
  • XML/JSON RPC
  • RESTful API
• ExpressJS
  • Basics
  • Environment & Practices
  • Middleware
  • Render Views with Templates
  • EJS
  • Routes
  • Error Handling
  • Web-Sockets
  • RESTful / Hypermedia
  • Web-Events / Web-Hooks

Testing

• Test Pyramid
• Test Types
• Arrange-Act-Assert
• Mocha
• Assert
• Negative Tests
• Async
• Integration Tests

Deployment

• Introduction to Docker
• Introduction to Kubernetes
• Docker & Kubernetes Tools
• AWS Node-Lambda
• Now
• Netlify

Async Pattern

• Callbacks
• EventEmitter
• Streams
• Promises
• RxJs

ECMA

• ECMA with Babel
  • Block-Scope
  • Template Strings
  • Destructing
  • Classes
  • Statics
  • Object-Literal Extentions
  • Modules, Exports and Imports
  • Arrow Functions
  • Default Parameter
  • Rest Parameters
  • Spread Operator for Objects
  • Spread Operator for Arrays
  • Promises
  • Async and Await
  • Generator Function

TypeScript

• Setup
• Testing
• Resources

Functional JS

• Functional JS

Examples

• ExpressJS-EJS
• ExpressJS-SPDY/HTTP2 Server-Side Events

Exercises: JavaScript and TypeScript

Runnable starting points with an exercise in each README; npm install && npm test in each folder.

• Values and equality
• Unions and literal types
• Narrowing
• Generics
• Utility types
• Advanced types
• Runtime validation with zod
• Branded IDs
• Library design
• Cross-runtime code

Exercises: Node.js Backend with TypeScript

Runnable starting points with an exercise in each README. Node.js >= 26 runs the TypeScript directly (type stripping); HTTP services use Express 5, tests run with Vitest. All exercises share one small domain – the orders of a workshop shop (money in whole cents). npm install && npm test in each folder, npm run test:solution for the solution.

• HTTP API with Express 5
• CLI tools: orders report
• Validation with zod
• Typed configuration and secrets
• Testing an API with Vitest
• SQL repository with postgres.js
• Structured logs
• JWT / OIDC with jose
• Profiling and performance
• Hardening a service
• OpenTelemetry tracing
• Health checks and graceful shutdown
• Ports and adapters
• Event sourcing and CQRS (Node.js >= 26, Vitest)
• Architecture decision records (ADR)

Exercises: Architecture with DDD, CQRS and Event Sourcing

Twelve exercises from domain language to event sourcing, plus sagas and event sourcing on AWS, each with start, solution and tests. Overview and order: EXAMPLES/ARCHITECTURE (German).

Workshops and slides

The exercises belong to these German-language workshops:

• Workshop: Node.js Backend, funktional und typsicher
• Workshop: Node.js Core mit Express 5
• Workshop: Architektur: DDD, CQRS und Event Sourcing
• Workshop: Fullstack mit TypeScript, Node.js, GraphQL und React in 6 Tagen
• Slides: slides.mikebild.dev/introduction-nodejs
• Slides: slides.mikebild.dev/introduction-cqrs-event-sourcing

Issue Reporting

If you have found a bug or if you have a feature request, please report them at this repository issues section. Please do not report security vulnerabilities on the public GitHub issue tracker.

License

This project is licensed under the MIT license. See the LICENSE file for more info.

Thanks

You like this NodeJS introduction and you want to see what coming next? Follow me on Twitter @mikebild.

Enjoy!