AFAIK TypeScript is a language which is a super-set of Javascript so in a sense it contains the flaws of it. Dart is a more ambitious project as it contains a c

AFAIK TypeScript is a language which is a super-set of Javascript so in a sense it contains the flaws of it. Dart is a more ambitious project as it contains a completely new language, a VM, a development browser called Dartium including the VM for fast development cycle and debugging, a modularity system (pub), a quite large client and server side library, a stand alone editor and a javascript trnaslator (dart2js). It also works in server side.