今天就加入我们的社区和给我们的GitHub repository发送Pull
Request来帮助塑造TypeScript的未来！
始于JavaScript，归于JavaScript
TypeScript从今天数以百万计的JavaScript开发者所熟悉的语法和语义开始。使用现有的JavaScript代码，包括流行的JavaScript库，并从JavaScript代码中调用TypeScript代码。
TypeScript可以编译出纯净、 简洁的JavaScript代码，并且可以运行在任何浏览器上、Node.js环境中和任何支持ECMAScript 3（或更高版本）的JavaScript引擎中。
强大的工具构建 大型应用程序
类型允许JavaScript开发者在开发JavaScript应用程序时使用高效的开发工具和常用操作比如静态检查和代码重构。
类型是可选的，类型推断让一些类型的注释使你的代码的静态验证有很大的不同。类型让你定义软件组件之间的接口和洞察现有JavaScript库的行为。
先进的 JavaScript
TypeScript提供最新的和不断发展的JavaScript特性，包括那些来自2015年的ECMAScript和未来的提案中的特性，比如异步功能和Decorators，以帮助建立健壮的组件。
这些特性为高可信应用程序开发时是可用的，但是会被编译成简洁的ECMAScript3（或更新版本）的JavaScript。
获取TypeScript
Node.js
命令行的TypeScript编译器可以使用Node.js包来安装。
- 安装
- npm install -g typescript
- 编译
- tsc helloworld.ts
Visual Studio
观看TypeScript实战
开源
TypeScript已经构建在GitHub上了。TypeScript编译器已经在TypeScript中实现，并且可以运行在任何JavaScript计算机中。
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阅读GitHub上的语言规范或者下载 docx或pdf格式。
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玩转TypeScript和提出bugs。
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加入Twitter#typescript话题讨论和 关注GitHub上的项目。
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加入微博#typescript#话题讨论。
为什么选择使用TypeScript?
We love TypeScript for many things… With TypeScript, several of our team members have said things like 'I now actually understand most of our own code!' because they can easily traverse it and understand relationships much better. And we’ve found several bugs via TypeScript’s checks.”
“One of Ionic's main goals is to make app development as quick and easy as possible, and the tooling support TypeScript gives us with autocompletion, type checking and source documentation really aligns with that.”
“TypeScript helped us to reuse the team’s knowledge and to keep the same team velocity by providing the same excellent developer experience as C# ... A huge improvement over plain JavaScript.”
“By combining Aurelia with TypeScript for modern web, mobile and desktop development, we've seen what is perhaps the most beautiful and elegant app development workflow to date.”
TypeScript has helped ensure that Dojo 2 will be built on rock solid foundations, which will make enterprise development better. TypeScript gives us all the benefits of ES6, plus more productivity, … and responsive support from the TypeScript team.”
“TypeScript is a smart choice when writing a modern web- or JavaScript-based application. TypeScript’s carefully considered language features and functionality, and its consistently improving tools, result in a terrifically productive development experience.”
TypeScript的伙伴们