[SalesForce] migration Aura to Lightning Web Components Open Source

You'll have better success on github I believe. Perhaps there aren't a bunch of projects actively looking for developers, but there's nothing to stop you from working on some solutions that are out there. If anything, fork something and get creative.

Visualstrap

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This question has been posted multiple times in the pilot group. The short answer is there is no equivalent for the $A.createComponent() API currently in the LWC .

Currently, the team recommends the below options

1. Create if branches on the template only load them when a certain condition is meet (yes this is no ideal and not what you are looking for).

2. You can have multiple html templates in your component. You can have a render() method that can switch which template to use based on some conditions.

Looks like option 2 seems a more viable approach.

Below is the example is shown for this use case

import { LightningElement } from "lwc";

import loadingTemplate from "./loading.html";
import finalTemplate from "./fancyTemplate.html";

export default class HelloWorld extends LightningElement {
@track isLoading = false;

  render() {
     return this.isLoading ? loadingTemplate : finalTemplate;
   }
}

Providing true dynamic creation seems to be technically challenging as per the conversation in the pilot chatter group.

Update

Although there is nothing like this on the salesforce platform today, if you are using lwc-oss on say platform like Heroku or on your website, you can achieve the dynamic component insertion.

Please check an example of the usage here.