That is what on my ideal world ChromeOS should have been, but with Dart instead, unfortunately the ChromeOS team had other plans in mind and made it into a Chrome juggler OS.
I was using Smalltalk on some university projects, before Sun decided to rename Oak and announce Java to the world.
The development experience was quite good.
Similarly with Native Oberon, which captured many of the Mesa/Cedar workflows.
> That is what on my ideal world ChromeOS should have been, but with Dart instead,
That would have been very interesting. I liked Dart from the brief time I looked at it. The web still feels like a somewhat crippled platform to develop for.