Tutorial

Eleven short chapters. Each isolates one feature, simplest first. Code in every chapter mirrors a working example in examples/ — clone the repo or open the chapter live in StackBlitz.

#	Chapter	Feature
01	Data list	data: T[] → free CRUD
02	Data files	dataFile + file<T> + hot-reload
03	Cross-endpoint	ctx.endpoint(url) joins
04	Handlers + zod	handler({ body, query, params, fn })
05	Middleware	logger / delay / auth + custom post
06	Scenarios	named server states
07	Multi-method	methods: { GET, POST, ... }
08	Proxy	passthrough to upstream
09	ctx.forward()	forward + mutate
10	Everything	composed showcase
11	WebSocket	ws({...}) + WsHandle.broadcast

Setup once

npm install @yoyo-org/mockr zod

Add "type": "module" to package.json. Run any chapter's server with:

npx tsx server.ts

For dev work use tsx watch — saves to the server file or imported mock groups respawn the process.

Read the chapters in order

Each chapter is self-contained but builds on vocabulary from the prior one. Skim 01–03 to absorb the data model; jump to whichever later chapter matches the feature you need.