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TypeScript

TypeScript. Allan da Costa Pinto Technical Evangelist Microsoft. Have you seen…. JavaScript 101. http://learn.jquery.com/javascript-101/. Yahoo JavaScript. Hours of Fun Application scale JavaScript development is hard. Introducing TypeScript.

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TypeScript

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  1. TypeScript Allan da Costa Pinto Technical Evangelist Microsoft

  2. Have you seen…

  3. JavaScript 101 http://learn.jquery.com/javascript-101/

  4. Yahoo JavaScript

  5. Hours of FunApplication scale JavaScript development is hard

  6. Introducing TypeScript • is a language for application scale JavaScript development. • is a typed superset of JavaScript that compiles to plain JavaScript. • Any browser. Any host. Any OS. Open Source. • http://typescriptlang.org

  7. Why TypeScript • Starts with JavaScript • All JavaScript code is TypeScript code, simply copy and paste • All JavaScript libraries work with TypeScript • Optional static types, classes, modules • Enable scalable application development and excellent tooling • Zero cost: Static types completely disappear at run-time • Ends with JavaScript • Compiles to idiomatic JavaScript • Runs in any browser or host, on any OS

  8. TypeScript Type System • Formalization of JavaScript’s types • Static representation of JavaScript’s dynamic type system • Type inference and structural typing • In practice very few type annotations are necessary • Works with existing JavaScript libraries • Declaration files can be written and maintained separately

  9. TypeScript Classes and Modules • Scalable application structuring • Classes, Modules, and Interfaces enable clear contracts between components • Aligned with emerging standards • Class, Module, and Arrow Function syntax aligns with ECMAScript 6 proposals • Supports popular module systems • CommonJS and AMD modules in any ECMAScript 3 compatible environment

  10. TypeScript Today • Compiler • Open Source, written in TypeScript • Tooling • Visual Studio language service, browser hosted playground • Libraries • Static typing of DOM, jQuery, node.js, WinRT, WinJS, … • And More • Lots of samples and formal Language Specification

  11. Get Started Today! • http://www.typescriptlang.org/ • http://dev.windows.com • Allandcp AT Microsoft.com

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