TypeScript

JavaScript that scales (http://www.typescriptlang.org)

It seems more like a syntactic sugar to JavaScript & includes all the features specified in EcmaScript (2015). It compiles into plain Javascript complaint with ECMAScript 3, 5 etc as well.

Features

• Scalability & Maintainability

• Dynamically-loadable modules

• Interface / Classes/ Modules

• Static checking

• Symbol-based navigation,

• Statement completion

• Code re-factoring.