Simple Router For Standalone LWC Single Page Application that works with communities, standalone lightning/aura applications.

Maps a URL to lightning component that essentially represents a page/module in SPA.

For this specifically, salesforce does not provide any routing even for LWC in lightning experience (similar to navigate to component for aura components) let alone in a standalone application.

Keeping this in mind, here's lwc-router, which registers your components as URL accessible components and even works when you bookmark them!!

Get all the LWC and apex classes deployed in your org and you're all set!

Alternatively, copy all contents under force-app/main/default/ to try the provided example.

At the core of lwc-router is routerModule, here's all the exports that might help you with implementation.

routeMeTo (function)               - updates app URL and updates UI
getURLParams (function)            - returns map of all current page params 
fetchCurrentPageState (function)   - returns current page state
getPageName (function)             - returns current page

c-router-module has two duties, as a root it behaves as container for all your page level components and as a registrar it can register them as a page,

root requires no attributes registrar component - will require "register-page" attribute which represent a pagename and maps passed component with that pagename in url. -set "is-default" attribute as true on registrar when registering home component

 <c-router-module>           <!--root c-router-module component , should be created only once-->
        <!--
            registrar c-router-module components
            should register all pages at once
        -->
        <c-router-module register-page="home" is-default="true">
            <c-router-test-home></c-router-test-home>                  <!-- component that represents a page 
            "register-page" - is the page name that will be registered for this component and will be present in URL as queryparam "page=home"
            -->
        </c-router-module>
        <c-router-module register-page="contacts">
            <c-router-test-contacts></c-router-test-contacts>           <!-- component that represents a page -->
        </c-router-module>
    </c-router-module>

arg0: pageName (String) - is mandatory and should be a registered pagename arg1: state (Object) - to set a state to new page arg2: params (Object) - to add additional params

routeMeTo('contacts', {}, { listview : 1 });
        //resultant url: "/SimpleRouterApp.app?page=contacts&listview=1"