Router

HTTP router for Node.js.

Status

Under development, not ready for prime-time just yet.

Installation

$ npm install @ramverk/router

Usage

Basic usage

const http = require('http')
const { Router } = require('@ramverk/router')

const router = new Router({}, (router) => {
  router.get('/', (req, res, err) => {
    res.end('Hello World')
  })

  router.get('/books/:id', (req, res, err) => {
    const notFound = new Error(`These aren't the droids you're looking for.`)
    notFound.status = 404

    return err(notFound)
  })
})

const handler = router.createHandler()

http.createServer(handler)
    .listen(3000)

Array describing routes

const { Router } = require('@ramverk/router')

const routes = [
  { method: 'GET', path: '/books', endpoint: 'books.index', as: 'books' },
  { method: 'GET', path: '/books/:id', endpoint: 'books.show', as: 'book' },
  { method: 'POST', path: '/books', endpoint: 'books.create' }
]

const router = new Router({ routes })

HTTP verbs

The router supports most of the verbs available.

const { Router } = require('@ramverk/router')

const router = new Router({}, (router) => {
  router.get('/', (req, res, err) => {})
  router.post('/', (req, res, err) => {})
  router.put('/', (req, res, err) => {})
  router.patch('/', (req, res, err) => {})
  router.delete('/', (req, res, err) => {})
  router.options('/', (req, res, err) => {})
  router.head('/', (req, res, err) => {})
  router.trace('/', (req, res, err) => {})
})

Named parameters

In the example :title is a named parameter. The values are accessible via req, res, err.request.params and it contains a Object<String, String>.

const { Router } = require('@ramverk/router')

const router = new Router({}, (router) => {
  router.get('/books/:title', (req, res, err) => {})
})

Named parameters only match a single path segment:

/books/eloquent-javascript          match
/books/confident-javascript         match
/books/confident-javascript.js      no match
/books/eloquent-javascript/reviews  no match
/books                              no match

Catch-All parameters

catch-all parameters have the form *title. Like the name suggests, they match everything, event new / segments. Therefore they must always be at the end of the pattern.

const { Router } = require('@ramverk/router')

const router = new Router({}, (router) => {
  router.get('/books/*title', (req, res, err) => {})
})

/books/eloquent-javascript          match
/books/confident-javascript         match
/books/confident-javascript.js      match
/books/eloquent-javascript/reviews  match
/books                              no match

Optional segments

Support for optional segments have the form (i-am-optional).

const { Router } = require('@ramverk/router')

const router = new Router({}, (router) => {
  router.get('/books(/:title)', (req, res, err) => {})
})

/books/eloquent-javascript          match
/books/confident-javascript         match
/books/confident-javascript.js      no match
/books/eloquent-javascript/reviews  no match
/books                              match

Redirects

Make legacy paths point to a new destination.

const { Router } = require('@ramverk/router')

const router = new Router({}, (router) => {
  router.redirect('/legacy-path', '/new-path')
})

Named routes

const { Router } = require('@ramverk/router')

const router = new Router({ scheme: 'https', host: 'ramverk.org' }, (router) => {
  router.get('/books/:id', (req, res, err) => {}, { as: 'book' })
})

router.path('book', { id: 5 }) // => '/books/5'
router.url('book', { id: 5 })  // => 'https://ramverk.org/books/5'

Scoped routes

const { Router } = require('@ramverk/router')

const router = new Router({}, (router) => {
  router.scope({ path: 'animals', as: 'animals' }, (router) => {
    router.scope({ path: 'mammals', as: 'mammals' }, (router) => {
      router.get('/cats', () => {}, { as: 'cats' })
    })
  })
})

router.path('animals-mammals-cats') // => '/animals/mammals/cats'

Endpoints

The resolver supports multiple types of endpoints.

1. The closure

router.get('/books', (req, res, error) => {
  // ...
})

2. The Controller.action

// books.js
class Books {
  index (req, res, error) {
    // ...
  }
}

router.get('/books', 'books.index')

3. The Action

// books/index.js
class Index {
  action (req, res, error) {
    // ...
  }
}

router.get('/books', 'books/index')

String endpoints uses a root path to locate files. By default it's set to process.cwd() but can be changed using the root: key in constructor options.

Release

$ git tag X.X.X
$ npm run release

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/ramverk/router. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.