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sly-svelte-location-router

v2.2.4

Published

A simple svelte router based on location API

Downloads

100

Readme

sly-svelte-location-router

A lightweight and flexible router for Svelte applications, leveraging the power of the Location API and path-to-regexp for advanced routing capabilities.

Features

  • Simple and intuitive API
  • TypeScript support for enhanced developer experience
  • Lazy-loading of route components for optimized performance
  • Custom loading component support
  • Fallback route handling for 404 pages
  • Robust path matching using path-to-regexp
  • Support for path parameters and query parameters
  • Programmatic navigation
  • Automatic route sorting for optimal matching

Installation

pnpm install sly-svelte-router

Usage

<script lang="ts">
  import { Router } from 'sly-svelte-router';
  import type { Routes } from 'sly-svelte-router';

  const routes: Routes = {
    '/': () => import('./routes/Home.svelte'),
    '/about': () => import('./routes/About.svelte'),
    '/user/:id': () => import('./routes/User.svelte'),
    '/posts/:category/:postId': {
      name: "posts",
      component: () => import('./routes/Post.svelte')
    },
    '/redirect': '/about',
    '*': () => import('./routes/404.svelte'),
  };

  const fallback = () => import('./routes/404.svelte');
</script>

<Router {routes} {fallback}>
  <div>Loading...</div>
</Router>

Route Definitions

sly-svelte-router supports three types of route definitions:

  1. RouteComponent: A function returning a Promise that resolves to a component. Example: () => import('./routes/Home.svelte')

  2. RouteData: An object with 'name' and 'component' properties. Example: { name: "posts", component: () => import('./routes/Post.svelte') }

  3. string: A pathname string for redirection. Example: '/about'

Routes are automatically sorted for optimal matching based on specificity and complexity.

Path Matching

sly-svelte-router uses path-to-regexp for powerful and flexible route matching. This allows for:

  • Named Parameters: /user/:id matches /user/123 and passes {id: '123'} as a parameter.
  • Optional Parameters: /post/:id? matches both /post/123 and /post.
  • Zero or more: /files/* matches any number of segments after /files/.
  • One or more: /files/:path+ requires at least one segment after /files/.
  • Custom matching: Use regular expressions for fine-grained control.

Examples:

  • /user/:id matches /user/123
  • /post/:category/:title? matches /post/tech and /post/tech/new-article
  • /files/:path* matches /files, /files/document.pdf, /files/images/photo.jpg

Route Redirection

You can easily set up route redirections by specifying the target path as a string:

const routes: Routes = {
  '/old-path': '/new-path',
  '/legacy-user/:id': '/user/:id',  // Redirects with parameters
  '/outdated': '/about',
};

API

Router Component

The main component for setting up routing.

Props:

  • routes: An object mapping route paths to component imports or route definitions
  • fallback: A function returning a Promise that imports the fallback component

Navigation

Use the navigate function for programmatic navigation:

import { navigate } from 'sly-svelte-router';

navigate('/user/123', { someState: 'value' });

Stores

Access route information reactively:

import { currentRoute, queryParams, routeState, routeHash, routeParams } from 'sly-svelte-router';

$: console.log($currentRoute); // Current route path
$: console.log($queryParams); // Map of query parameters
$: console.log($routeState); // Current route state
$: console.log($routeHash); // Current route hash
$: console.log($routeParams); // Object containing route parameters

TypeScript Support

sly-svelte-router is written in TypeScript and provides type definitions out of the box for an enhanced development experience.

Performance

Route components are lazy-loaded by default, ensuring that only the necessary code is loaded for each route, optimizing your application's performance.

License

MIT

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.