Dan:
There is huge benefit and it is one of the big selling points of Dart. You write in a familiar OOP language with great toolset and out comes working javascript. I don't know javascript - I've started to learn a few times but was repelled by it. But most traditional OO programmers can grok Dart in a few days, plus it has great tools. If D could do the same it would be great.
I prefer TypeScript. It doesn't require a new JavaScript VM, and it looks designed very well. I am waiting for a TypeScript=>asm.js compiler :-)
Bye, bearophile
