[SalesForce] Send message to aura components from lwc

With Summer 19 release, now its possible to use LWC in visualforce as lightning out.

https://www.paul-force.com/2019/04/24/use-lightning-web-components-in-visualforce-pages/ https://releasenotes.docs.salesforce.com/en-us/summer19/release-notes/rn_lwc_vf.htm

URL addressable tabs are currently not supported for LWC components as documented in Unsupported Experiences and Tools

Also from Documentation:

To make an addressable Lightning web component, embed it in an Aura component that implements the lightning:isUrlAddressable interface.

So embed LWC component in Aura component and have navigation to that component - using isUrlAddressable interface.

Also, pls note that the URL parameters are accessable in LWC component directly. You need not pass them from Aura component.

import { LightningElement, track, wire } from 'lwc';
import { CurrentPageReference, NavigationMixin } from 'lightning/navigation';

export default class Poc extends NavigationMixin(LightningElement) {
    @wire(CurrentPageReference)
    setCurrentPageReference(currentPageReference) {
        this.currentPageReference = currentPageReference;
    }
    connectedCallback(){
        console.log("URL Parameters => ", this.currentPageReference.state);
    }
}

As shown above, use wire service to get the URL parameters (as state) in LWC component