Linked by Thom Holwerda on Mon 1st Oct 2012 22:55 UTC
General Development "Everyone seems to have a replacement for JavaScript - Google even has two. Now Microsoft has revealed that Anders Hejlsberg has been working on a replacement and it has released a preview of TypeScript. TypeScript is open source - Apache 2.0 license - and a superset of JavaScript. As you would expect from a Hejlsberg language it incorporates type checking, interfaces and lots of syntactic sugar."
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CoffeeScript is syntactic sugar for JavaScript. TypeScript is optional static type checking for JavaScript. Dart is optional static type checking plus various incompatible semantic cleanups and a standard module system for JavaScript.

TypeScript is definitely closer to Dart than CoffeeScript, but it doesn't go so far as to break JavaScript compatibility like Dart does. CoffeeScript-like syntactic sugar could be implemented as a pre-compiler for either language. LawnDart, if you will.

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