[detst]

> so I also wonder when it will be "stable"

It should be out of technology preview later this year.

> JavaScript sucks if you don't know how it works

It's possible to understand JS and want better. I think the people behind V8 and Dart know how JS works.

> what's the point of writting this when Dart itself compiles to JavaScript

What's the point of writing anything in any language? The Dart VM will be included with Chrome and other browsers are free to include one, too; Dart->JS is for browsers that don't and the goal is that it'll perform similar to hand-written JS.

> who the fuck uses Dartium as their primary browser

Nobody. It's for development until the Dart VM is included with Chrome.

[cnp]

Exactly -- that's why this is exciting, particularly the Flash / interactive part. The authors have done a very good job with what they have to work with, with the assumption that they're only working with a preview and that the primary medium will be a VM with a JS fallback. The performance, all said, is very, very good.