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@scant/router

Dead simple router.

Install

yarn add @scant/router

Usage

This package is basically a wrapper around simple path matching. It currently uses url-pattern to handle matching. It allows you to define routes as an array of objects, with nesting, naming, and a handler function. You can also optionally attach metadata to the route defintion, which will be available in the route handlers or when finding the matching route for a url.

This package does not watch or modify the page location. It's meant to be used with something that can observe changes to window.history. Consider using with something like @scant/history or history.

Every route must have a path property. Each route can optionally have a name property, which can be used to turn a parameter object into a url. For the path, trailing slashes are not required. See url-pattern to learn how the pattern matching works. Additionally, a route can contain a meta property, as well as an action or a children property.

import createRouter from '@scant/router';
const routes = [
  {
    name: 'home',
    path: '/',
    action: () => document.querySelector('body').textContent = 'Home';
  },
  {
    name: 'welcome',
    path: '/welcome',
    children: [
      {
        name: 'welcome',
        path: '/', // will match /welcome
        action: ({ match }) => {
          document.querySelector('body').textContent = `Welcome ${match.meta.name}`;
        },
        meta: {
          name: 'User'
        },
      },
      {
        name: 'welcomeName',
        path: '/:name', // will match /welcome/:name
        action: ({ param }) => {
          document.querySelector('body').textContent = `Welcome ${params.name}`;
        }
      }
    ]
  },
  {
    name: 'matcher'
    path: '/match/:some/:params',
    meta: {
      anthing: 'goes in this object',
    },
  },
];

const router = createRouter(routes);

Methods

• router.match(url): Given a url, will return the route definition that matches it, or false.
• router.parse(url): Given a url, will return the matching route's payload (see below), or false.
• router.create(name, params): Given a route's name, and any dynamic params, will return the generated url, or false of no matching route name exists. Will throw if you do not provide a params object with all the required route params.

Action

The action is the route handler function, and it receives a payload object consisting of the following:

• url: The url being checked.
• match: The matched route definition object. It will include the name, full path, and any meta data. If the matching route is part of nested children, the path will be the entire constructed path (ex. /welcome/:name in the welcomeName route above).
• params: An object of the parsed params from the route (ex. { name: ... } in the welcomeName route above).
• router: The router instance, useful if you've extended the instance.