Ask HN: Vanilla JavaScript Code Organization Projects Recommendation?

Hello!

In 2011 I've used to write JavaScript on a single file. Then I stopped using JavaScript (I happen to like it). but my career has been mostly with Java.

Fast Forward 2023. Do you fellows have some projects that are good examples of how code is organized for JavaScript applications (Client Side) without using any Framework? I am aware of the new additions JavaScript has added in the last years, my question is more related to good examples of Software Engineering using Vanilla JavaScript.

Thanks!