What most JS frameworks like React and Vue got and get wrong is their runtimes, meaning that a good designer/developer experience scales with the amount of code

What most JS frameworks like React and Vue got and get wrong is their runtimes, meaning that a good designer/developer experience scales with the amount of code that is shipped, an anti pattern because that it can be done better as demonstrated by Svelte, which by being a "web compiler" basically decouples the DX and production code. It's the real deal for webdev, going back to React or Vue feels awkward after using Svelte.