I see a lot of handwaving on the side of "just" (fun activity: search for the word "just" on this page) using vanilla JavaScript. Can anyone point to a sane method of putting together a real-world large(ish) JavaScript application without using (or essentially rewriting) any of the established frameworks? I am talking about a single page app with multiple sections, each with multiple pages using nested reusable components. Bonus points for solutions for performance, server-side rendering, nested routing, state management, data flow.