1~
2Eveken at egy JavaScript web framework valasztasa kompromisszumot jelentett: az Express univerzalis volt, de lassu es Node-hoz kotott, a Fastify gyors, de csak Node, a Next.js teljes erteku, de nehez. Amikor megerkeztek az edge runtime-ok — Cloudflare Workers, Deno Deploy, Bun, Vercel Edge — ezek a frameworkok megmutattak a hatarukat.
3~
4A [Hono](https://hono.dev) (japanul "lang" 🔥) a modern valasz. Egy 14KB alatti framework, teljes mertekben Web Standardson (`Request`, `Response`, `fetch`) epul, es minden olyan helyen fut, ahol JavaScript runtime van. Ugyanaz a kod deployolhato Cloudflare Workersre, Bunra, Denora, Node.js-re, Vercelra, Netlifyra es AWS Lambdara — valtoztatas nelkul.
5~
6## Miert Hono
7~
81. **Teljesitmeny.** A `RegExpRouter` minden route mintat egyetlen regexbe forditja. A benchmarkok meghaladjak a 400 000 ops/s-ot.
92. **Hordozhatosag.** A Web Standards nulla Node fuggoseget jelent.
103. **TypeScript-first DX.** Path parametereket literal tipuskent kovetkezteti ki, end-to-end type-safe RPC kliens.
11~
12```mermaid
13graph LR
14    Client[Client] -->|Request| App[app.fetch]
15    App --> MW1[Middleware 1]
16    MW1 --> MW2[Middleware 2]
17    MW2 --> Router[RegExpRouter]
18    Router --> Handler[Route Handler]
19    Handler --> Context[c.json / c.text]
20    Context -->|Response| Client
21    App -.->|deploy| CF[Cloudflare Workers]
22    App -.->|deploy| Bun[Bun]
23    App -.->|deploy| Deno[Deno]
24    App -.->|deploy| Node[Node.js]
25    App -.->|deploy| Vercel[Vercel]
26```
27~
28## Kezdes
29~
30```bash
31npm create hono@latest my-api
32cd my-api
33npm install
34npm run dev
35```
36~
37```typescript
38// src/index.ts
39import { Hono } from 'hono'
40~
41const app = new Hono()
42~
43app.get('/', (c) => c.text('Hello Hono!'))
44~
45export default app
46```
47~
48Cloudflare Workersen ennyi eleg. Bunon: `Bun.serve({ fetch: app.fetch, port: 3000 })`. Node-on: `serve({ fetch: app.fetch })` a `@hono/node-server`-bol.
49~
50## Routing
51~
52```typescript
53import { Hono } from 'hono'
54~
55const app = new Hono()
56~
57app.get('/', (c) => c.text('Home'))
58app.get('/posts/:id', (c) => {
59  const id = c.req.param('id')
60  return c.json({ id })
61})
62app.get('/posts/:id/comments/:commentId', (c) => {
63  const { id, commentId } = c.req.param()
64  return c.json({ id, commentId })
65})
66app.get('/files/*', (c) => c.text('Wildcard'))
67app.post('/posts', async (c) => {
68  const body = await c.req.json()
69  return c.json({ created: body }, 201)
70})
71```
72~
73### Routok csoportositasa
74~
75```typescript
76// routes/posts.ts
77import { Hono } from 'hono'
78~
79const posts = new Hono()
80posts.get('/', (c) => c.json({ posts: [] }))
81posts.get('/:id', (c) => c.json({ id: c.req.param('id') }))
82export default posts
83~
84// src/index.ts
85import { Hono } from 'hono'
86import posts from './routes/posts'
87~
88const app = new Hono()
89app.route('/posts', posts)
90```
91~
92## A Context objektum
93~
94```typescript
95app.post('/echo', async (c) => {
96  const userAgent = c.req.header('User-Agent')
97  const page = c.req.query('page')
98  const body = await c.req.json()
99  const env = c.env
100~
101  c.set('requestId', crypto.randomUUID())
102  const id = c.get('requestId')
103~
104  c.header('X-Request-Id', id)
105  c.status(200)
106  return c.json({ userAgent, page, body, id })
107})
108```
109~
110## Middleware: hagyma modell
111~
112```typescript
113import { Hono } from 'hono'
114import { logger } from 'hono/logger'
115import { cors } from 'hono/cors'
116import { secureHeaders } from 'hono/secure-headers'
117~
118const app = new Hono()
119~
120app.use('*', logger())
121app.use('*', secureHeaders())
122app.use('/api/*', cors({ origin: 'https://spinny.dev' }))
123~
124app.use('*', async (c, next) => {
125  const start = performance.now()
126  await next()
127  c.header('X-Response-Time', `${performance.now() - start}ms`)
128})
129```
130~
131### Beepitett middleware-ek
132~
133| Middleware | Cel |
134|-----------|---------|
135| `logger` | Strukturalt logok metodusrol, utvonalrol, statuszrol, idotartamrol |
136| `cors` | Origin, metodusok, headerek szerint konfiguralhato CORS |
137| `csrf` | Origin alapu CSRF vedelem |
138| `secureHeaders` | Beallitja CSP, HSTS, X-Frame-Options |
139| `bearerAuth` / `basicAuth` | Keszen hasznalhato Bearer/Basic auth |
140| `jwt` | JWT verify/sign `jose`-val |
141| `etag` | ETag generalas es 304 kezeles |
142| `cache` | Cache a Web Cache API-n keresztul |
143| `compress` | gzip/deflate a valaszon |
144| `bodyLimit` | Visszautasitja a kuszob feletti body-kat |
145| `timing` | Server-Timing header profilingehoz |
146~
147### Type-safe egyedi middleware
148~
149```typescript
150import { createMiddleware } from 'hono/factory'
151~
152type AuthVars = { userId: string; role: 'user' | 'admin' }
153~
154export const requireAuth = createMiddleware<{ Variables: AuthVars }>(
155  async (c, next) => {
156    const token = c.req.header('Authorization')?.replace('Bearer ', '')
157    if (!token) return c.json({ error: 'Unauthorized' }, 401)
158~
159    const payload = await verifyJwt(token)
160    c.set('userId', payload.sub)
161    c.set('role', payload.role)
162    await next()
163  }
164)
165~
166app.get('/me', requireAuth, (c) => {
167  const userId = c.var.userId
168  return c.json({ userId })
169})
170```
171~
172## Validacio Zoddal
173~
174```typescript
175import { Hono } from 'hono'
176import { zValidator } from '@hono/zod-validator'
177import { z } from 'zod'
178~
179const createPost = z.object({
180  title: z.string().min(1).max(200),
181  body: z.string().min(1),
182  tags: z.array(z.string()).default([]),
183})
184~
185app.post(
186  '/posts',
187  zValidator('json', createPost),
188  (c) => {
189    const data = c.req.valid('json')
190    return c.json({ ok: true, post: data }, 201)
191  }
192)
193```
194~
195## RPC: end-to-end type-safe kliens
196~
197```typescript
198// server.ts
199import { Hono } from 'hono'
200import { zValidator } from '@hono/zod-validator'
201import { z } from 'zod'
202~
203const app = new Hono()
204  .get('/posts/:id', (c) =>
205    c.json({ id: c.req.param('id'), title: 'Hello' })
206  )
207  .post(
208    '/posts',
209    zValidator('json', z.object({ title: z.string(), body: z.string() })),
210    (c) => c.json({ ok: true }, 201)
211  )
212~
213export type AppType = typeof app
214export default app
215```
216~
217```typescript
218// client.ts
219import { hc } from 'hono/client'
220import type { AppType } from './server'
221~
222const client = hc<AppType>('https://api.spinny.dev')
223~
224const res = await client.posts[':id'].$get({ param: { id: '42' } })
225if (res.ok) {
226  const data = await res.json()
227  console.log(data.title)
228}
229~
230const created = await client.posts.$post({
231  json: { title: 'Szia', body: 'A Hono egy lang' },
232})
233```
234~
235### Status kod megkulonboztetes
236~
237```typescript
238.get('/posts/:id', (c) => {
239  const post = findPost(c.req.param('id'))
240  if (!post) return c.json({ error: 'not found' }, 404)
241  return c.json({ post }, 200)
242})
243```
244~
245```typescript
246const res = await client.posts[':id'].$get({ param: { id } })
247if (res.status === 404) {
248  const { error } = await res.json()
249}
250if (res.status === 200) {
251  const { post } = await res.json()
252}
253```
254~
255## Routerek es teljesitmeny
256~
257| Router | Erossegek | Mikor hasznalja |
258|--------|-----------|-------------|
259| `RegExpRouter` | Maximalis sebesseg, fordított regex | Default a legtobb API-hoz |
260| `TrieRouter` | Minden mintat tamogat | Komplex mintak, amiket a RegExp nem kezel |
261| `SmartRouter` | Automatikusan a legjobbat valasztja | Ajanlott default |
262| `LinearRouter` | Ultragyors regisztracio | One-shot workerek, kritikus cold start |
263| `PatternRouter` | Minimalis bundle (<15KB) | Extrem meretkorlatozasok |
264~
265```typescript
266import { Hono } from 'hono'
267import { LinearRouter } from 'hono/router/linear-router'
268~
269const app = new Hono({ router: new LinearRouter() })
270```
271~
272## Multi-runtime deploy
273~
274### Cloudflare Workers
275~
276```typescript
277import { Hono } from 'hono'
278~
279type Bindings = { MY_KV: KVNamespace; DB: D1Database }
280const app = new Hono<{ Bindings: Bindings }>()
281~
282app.get('/cache/:key', async (c) => {
283  const value = await c.env.MY_KV.get(c.req.param('key'))
284  return c.json({ value })
285})
286~
287export default app
288```
289~
290Deploy: `npx wrangler deploy`.
291~
292### Bun
293~
294```typescript
295import { Hono } from 'hono'
296const app = new Hono()
297app.get('/', (c) => c.text('Bun + Hono'))
298~
299Bun.serve({ fetch: app.fetch, port: 3000 })
300```
301~
302### Node.js
303~
304```typescript
305import { serve } from '@hono/node-server'
306import { Hono } from 'hono'
307~
308const app = new Hono()
309app.get('/', (c) => c.text('Node + Hono'))
310~
311serve({ fetch: app.fetch, port: 3000 })
312```
313~
314### Deno
315~
316```typescript
317import { Hono } from 'jsr:@hono/hono'
318const app = new Hono()
319app.get('/', (c) => c.text('Deno + Hono'))
320Deno.serve(app.fetch)
321```
322~
323### Vercel
324~
325```typescript
326// api/[[...route]].ts
327import { Hono } from 'hono'
328import { handle } from 'hono/vercel'
329~
330const app = new Hono().basePath('/api')
331app.get('/hello', (c) => c.json({ msg: 'Hello from Vercel' }))
332~
333export const GET = handle(app)
334export const POST = handle(app)
335```
336~
337## Gyakorlati pelda: REST API auth-tel es DB-vel
338~
339```typescript
340import { Hono } from 'hono'
341import { jwt } from 'hono/jwt'
342import { logger } from 'hono/logger'
343import { cors } from 'hono/cors'
344import { zValidator } from '@hono/zod-validator'
345import { z } from 'zod'
346~
347type Bindings = { DB: D1Database; JWT_SECRET: string }
348type Variables = { jwtPayload: { sub: string } }
349~
350const app = new Hono<{ Bindings: Bindings; Variables: Variables }>()
351~
352app.use('*', logger())
353app.use('/api/*', cors({ origin: 'https://spinny.dev', credentials: true }))
354~
355const auth = (c: any, next: any) =>
356  jwt({ secret: c.env.JWT_SECRET })(c, next)
357~
358const api = app.basePath('/api')
359~
360api.get('/posts', async (c) => {
361  const { results } = await c.env.DB
362    .prepare('SELECT id, title, created_at FROM posts ORDER BY created_at DESC LIMIT 50')
363    .all()
364  return c.json({ posts: results })
365})
366~
367api.post(
368  '/posts',
369  auth,
370  zValidator('json', z.object({
371    title: z.string().min(1).max(200),
372    body: z.string().min(1),
373  })),
374  async (c) => {
375    const { title, body } = c.req.valid('json')
376    const userId = c.var.jwtPayload.sub
377    const result = await c.env.DB
378      .prepare('INSERT INTO posts (title, body, author_id) VALUES (?, ?, ?) RETURNING id')
379      .bind(title, body, userId)
380      .first<{ id: number }>()
381    return c.json({ id: result?.id }, 201)
382  }
383)
384~
385api.onError((err, c) => {
386  console.error(err)
387  return c.json({ error: 'Internal error' }, 500)
388})
389~
390export type AppType = typeof api
391export default app
392```
393~
394## Tesztelés
395~
396```typescript
397import { describe, it, expect } from 'vitest'
398import app from '../src/index'
399~
400describe('GET /api/posts', () => {
401  it('visszaadja a posztok listajat', async () => {
402    const res = await app.request('/api/posts')
403    expect(res.status).toBe(200)
404    const body = await res.json()
405    expect(body.posts).toBeInstanceOf(Array)
406  })
407})
408```
409~
410## Legjobb gyakorlatok
411~
412### 1. Lancold a route definiciokat
413~
414```typescript
415const app = new Hono()
416  .get('/posts', handler1)
417  .post('/posts', handler2)
418  .get('/posts/:id', handler3)
419```
420~
421### 2. Exportald a tipust, ne az implementaciot
422~
423A kliensnek `AppType`-ot kell importalnia.
424~
425### 3. Egy router domain-enkent
426~
427Sub-app `posts`, `users`, `webhooks` szamara.
428~
429### 4. Validacio a hataron, mindig
430~
431Minden kulso bemenetnek at kell mennie a `zValidator`-on.
432~
433### 5. Tamaszkodj a bindingsre, ne a globalis kliensekre
434~
435Cloudflare-en ferj hozza KV/D1/R2-hoz `c.env`-en keresztul.
436~
437### 6. Mérj, mielott optimalizalod a routert
438~
439A default `SmartRouter` az esetek 95%-ban megfelel.
440~
441## Konkluzio
442~
443A Hono 2026-ban de facto standardda valt edge-ready API-k epitesehez TypeScriptben.
444~
445> **Indulasi checklist:**
446>
447> - [x] `npm create hono@latest` es valaszd a runtime sablont
448> - [x] Definialj routokat lancolassal (`.get(...).post(...)`)
449> - [x] Add hozza `logger`, `cors`, `secureHeaders`-t globalis middleware-kent
450> - [x] Validalj minden bemenetet a `@hono/zod-validator`-ral
451> - [x] Exportald `AppType`-ot es hasznald az API-t a type-safe `hc` klienssel
452> - [x] Irj teszteket `app.request()`-tel — HTTP szerver nelkul
453> - [x] Deployolj `wrangler deploy`-jal (CF), `vercel deploy`-jal vagy a runtime bundlerével
454~