D to ASM.js vs D to Dart (VM)

[via Digitalmars-d]

On Friday, 16 May 2014 at 15:54:44 UTC, Wyatt wrote:
> As I understand it, you take a substantial performance hit for 
> doing so.

I haven't noticed this much. It is a bit more annoying to debug 
on IE. I doubt you get much more than a 40% penalty, but you also 
get working closures, this-pointer etc.

> Belay that, if I wanted a compiler centipede, I'd be more 
> interested in targeting Haxe: community-driven and it lets me

I like the concept, but it takes a lot of resources to cover 
browser bugs. Dart targets current browsers and are tested 
against them. It provides polyfills where the browser is lacking 
and gives you booleans to test for features. You have to count in 
the libraries, IDE, debugger etc.