Instead of vDOM, solid.js uses <template> - real DOM elements + cloneNode().

And that's doubtful decision. Each live DOM element is about 100-200 bytes in memory.

While in React (PReact, Mithril) this JSX expression:

   <div>a</div> 

is this:

   ["div",{},["a"]]

5 or so times less.

In other words: needs to be tested on large DOM structures.