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hono/README.md
2021-12-21 08:02:20 +09:00

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# Hono
Hono [炎] - Tiny web framework for Cloudflare Workers and others.
```js
const app = Hono()
app.get('/', () => new Response('Hono!!'))
app.fire()
```
## Feature
- Fast - the router is implemented with Trie-Tree structure.
- Tiny - use only standard API.
- Portable - zero dependencies.
- Optimized for Cloudflare Workers.
## Install
```
$ yarn add hono
```
or
```sh
$ npm install hono
```
## Methods
- app.**HTTP_METHOD**(path, callback)
- app.**all**(path, callback)
- app.**route**(path)
- app.**use**(path, middleware)
## Routing
### Basic
`app.HTTP_METHOD`
```js
// HTTP Methods
app.get('/', () => new Response('GET /'))
app.post('/', () => new Response('POST /'))
// Wildcard
app.get('/wild/*/card', => {
return new Reponse('GET /wild/*/card')
})
```
`app.all`
```js
// Any HTTP methods
app.all('/hello', () => 'ALL Method /hello')
```
### Named Parameter
```js
app.get('/user/:name', (req) => {
const name = req.params('name')
...
})
```
### Regexp
```js
app.get('/post/:date{[0-9]+}/:title{[a-z]+}', (req) => {
const date = req.params('date')
const title = req.params('title')
...
```
### Chained Route
```js
app
.route('/api/book')
.get(() => {...})
.post(() => {...})
.put(() => {...})
```
## Middleware
```js
const logger = (req, res, next) => {
console.log(`[${req.method}] ${req.url}`)
next()
}
const addHeader = (req, res, next) => {
next()
res.headers.add('x-message', 'This is middleware!')
}
app = app.use('*', logger)
app = app.use('/message/*', addHeader)
app.get('/message/hello', () => 'Hello Middleware!')
```
## Request
### query
```js
app.get('/search', (req) => {
const query = req.query('q')
})
```
### params
```js
app.get('/entry/:id', (req) => {
const id = req.params('id')
})
```
## Related projects
- koa <https://github.com/koajs/koa>
- express <https://github.com/expressjs/express>
- itty-router <https://github.com/kwhitley/itty-router>
- Sunder <https://github.com/SunderJS/sunder>
- goblin <https://github.com/bmf-san/goblin>
## Author
Yusuke Wada <https://github.com/yusukebe>
## License
MIT