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178 lines
2.7 KiB
Markdown
178 lines
2.7 KiB
Markdown
# Hono
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Hono [炎] - Tiny web framework for Cloudflare Workers and others.
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```js
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const { Hono } = require('hono')
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const app = new Hono()
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app.get('/', () => new Response('Hono!!'))
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app.fire()
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```
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## Feature
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- Fast - the router is implemented with Trie-Tree structure.
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- Tiny - use only standard API.
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- Portable - zero dependencies.
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- Flexible - you can make your own middlewares.
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- Optimized - for Cloudflare Workers and Fastly Compute@Edge.
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## Benchmark
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```
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hono x 813,001 ops/sec ±2.96% (75 runs sampled)
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itty-router x 160,415 ops/sec ±3.31% (85 runs sampled)
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sunder x 307,438 ops/sec ±4.77% (73 runs sampled)
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Fastest is hono
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✨ Done in 37.03s.
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```
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## Install
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```
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$ yarn add hono
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```
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or
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```sh
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$ npm install hono
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```
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## Methods
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- app.**HTTP_METHOD**(path, callback)
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- app.**all**(path, callback)
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- app.**route**(path)
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- app.**use**(path, middleware)
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## Routing
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### Basic
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`app.HTTP_METHOD`
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```js
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// HTTP Methods
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app.get('/', () => new Response('GET /'))
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app.post('/', () => new Response('POST /'))
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// Wildcard
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app.get('/wild/*/card', () => {
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return new Response('GET /wild/*/card')
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})
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```
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`app.all`
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```js
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// Any HTTP methods
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app.all('/hello', () => new Response('ALL Method /hello'))
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```
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### Named Parameter
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```js
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app.get('/user/:name', (c) => {
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const name = c.req.params('name')
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...
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})
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```
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### Regexp
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```js
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app.get('/post/:date{[0-9]+}/:title{[a-z]+}', (c) => {
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const date = c.req.params('date')
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const title = c.req.params('title')
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...
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```
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### Chained Route
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```js
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app
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.route('/api/book')
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.get(() => {...})
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.post(() => {...})
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.put(() => {...})
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```
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## Middleware
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```js
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const logger = (c, next) => {
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console.log(`[${c.req.method}] ${c.req.url}`)
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next()
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}
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const addHeader = (c, next) => {
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next()
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c.res.headers.add('x-message', 'This is middleware!')
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}
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app = app.use('*', logger)
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app = app.use('/message/*', addHeader)
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app.get('/message/hello', () => 'Hello Middleware!')
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```
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## Context
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### req
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```js
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app.get('/hello', (c) => {
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const userAgent = c.req.headers('User-Agent')
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...
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})
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```
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### res
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```js
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app.use('/', (c, next) => {
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next()
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c.res.headers.append('X-Debug', 'Debug message')
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})
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```
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## Request
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### query
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```js
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app.get('/search', (c) => {
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const query = c.req.query('q')
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...
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})
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```
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### params
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```js
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app.get('/entry/:id', (c) => {
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const id = c.req.params('id')
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...
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})
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```
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## Related projects
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- koa <https://github.com/koajs/koa>
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- express <https://github.com/expressjs/express>
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- oak <https://github.com/oakserver/oak>
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- itty-router <https://github.com/kwhitley/itty-router>
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- Sunder <https://github.com/SunderJS/sunder>
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- goblin <https://github.com/bmf-san/goblin>
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## Author
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Yusuke Wada <https://github.com/yusukebe>
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## License
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MIT
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