TypeScript & JavaScript

http://www.typescriptlang.org/docs/tutorial.html

handbook: 

• Basic Types
• Variable Declarations
• Interfaces
• Classes
• Functions
• Generics
• Enums
• Type Inference
• Type Compatibility
• Advanced Types
• Symbols
• Iterators and Generators
• Modules
• Namespaces
• Namespaces and Modules
• Module Resolution
• Declaration Merging
• JSX
• Decorators
• Mixins
• Triple-Slash Directives

 

npm install –g typescript

tsc file1.ts

 

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/void