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0.7.0 • Public • Published


Minimal, yet awesome, batteries included universal router.

Space router packs all the features you need to always keep your app in sync with the url. It's different from most other routers in that there is only a single callback. Use this callback to rerender your app or update your store on each url change.

Space router:

  • listens to url changes via popstate and/or hashchange
  • handles all link clicks in your app
  • extracts url parameters and parses query strings
  • supports nested routes
  • should fit a wide range of application architectures and frameworks
  • has no dependencies and weights 2kb


npm i space-router


Example demonstrating most of the API.

const Preact = require('preact')
const createRouter = require('space-router')
const App = ({ router, children }) =>
  <div className='App'>
    <div className='Nav'>
      <a href='/'>Home</a>
      <a href='/channels'>Channels</a>
      <a href='/channels/5'>Channel 5</a>
    <div className='Content'>
      body, html { padding: 20px; font-family: sans-serif; }
      a { padding: 10px; }
      .Nav { padding: 10px 0; border-bottom: 1px solid #eee; }
      .Content { padding: 20px 10px; }
const Home = (props) => <div>Home</div>
const Channels = (props) => <div>Channels</div>
const Channel = (props) => <div>Channel {}</div>
const NotFound = (props) => <div>404</div>
const router = createRouter([
  ['', App, [
    ['/', Home],
    ['/channels', Channels],
    ['/channels/:id', Channel],
    ['*', NotFound]
function render (route, components) {
  let app = components.reduceRight((children, Component) =>
    <Component params={route.params}>{children}</Component>
  , null)
  Preact.render(app, document.body, document.body.lastElementChild)

And here's more of the router API:

// navigate to the urls
router.push('/video/5', { query: { t: '30s' } })

// replace instead of pushing
router.push('/channels/6', { replace: true })

// update parts of the url
router.set({ params: { id: 1 } })
router.set({ params: { id: 1 }, replace: true })
router.set({ query: null })

// get data (components, objects, etc.) associated with a route patterm'/channels/:id')

// generate links
router.href('/video/5', { query: { t: '25s' } })
router.href('/video/:id', { params: { id: 5 }, query: { t: '25s' }, hash: '#foo' })

// match a url and retrieve details and data { route, data }, useful for SSR

There are many other ways you could go about it depending on your application's architecture. E.g. one nice strategy is to update your central store via the onTransition callback and then use the helper to get the relevant components in your main render function.

You can use jetpack to try these examples out. Clone the repo and run jetpack space-router/examples/preact.


createRouter(routes, options)

  • routes an array of arrays of route definitions, e.g. e.g. ['/:pattern', Component, [...children]]
  • options object of shape { mode, interceptLinks, qs }
    • mode - one of history, hash, memory, default is history
    • interceptLinks - whether to handle <a> clicks, default is true
    • qs - a custom query string parser, object of shape { parse, stringify }


Start the routing, will immediately call onTransition based on the current URL.

  • onTransition is called with (route, data)
    • route is an object of shape { pattern, href, pathname, params, query, hash }
    • data is an array of datas associated with this route


Stop the routing, remove DOM click and popstate/hashchange listeners.

push(url, options)

Navigate to a url. Updates browser URL and calls onTransition.

  • url a relative url string or a route pattern
  • options an object of shape { replace, params, query, hash }

replace(url, options)

Navigate to a url. Replaces the current browser URL without adding a new history entry and calls onTransition.

  • url a relative url string or a route pattern
  • options an object of shape { params, query, hash }


Update any part of the URL without losing existing parameters. Replaces the current browser and calls onTransition.

  • options an object of shape { replace, pattern, params, query, hash }


Match the url against the routes and return { route, data }. Useful in SSR.

href(url, options)

Generate a url. Useful if you want to append query string or if you're using mixed history/hash mode and you don't know which one is in play. Href will prepend urls with '#' when in hash mode.

  • url - can be a full url or a pattern
  • options object of shape { params, query, hash }


Exchange a route pattern to the array of data associated with this route. Useful when implementing a stateless pattern, where current route state is stored in a central store, and rendering logic needs to look up the component(s) associated with the given route.


npm i space-router

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