router5 is extensible with the use of plugins. Plugins can decorate a route instance and do things on specific router and transition events.

Plugin requirements

A plugin is a function taking a router instance and returning an object with a name and at least one of the following methods:

  • onStart(): invoked when router.start() is called

  • onStop(): invoked when router.stop() is called

  • onTransitionStart(toState, fromState)

  • onTransitionCancel(toState, fromState)

  • onTransitionError(toState, fromState, err)

  • onTransitionSuccess(toState, fromState, opts) (options contains replace and reload boolean flags)

Registering a plugin

function myPlugin(router, dependencies) {
return {
onTransitionSuccess: (toState, fromState) => {
console.log('Yippee, navigation to ' + + ' was successful!');
myPlugin.pluginName = 'MY_PLUGIN';
const router = createRouter()
router.hasPlugin('MY_PLUGIN'); // => true

Plugin examples

Router5 includes a logging plugin that you can use to help development

import createRouter, { loggerPlugin } from 'router5';
const router = createRouter()