Using TypeScript Using TypeScript ℹ️ This section has been moved to Using TypeScript Chapter .

TypeScript 2.3 ES5/ES3 的生成器和迭代支持 迭代器 生成器 新的--downlevelIteration 编译选项 异步迭代 异步迭代器 异步生成器 for-await-of 语句 注意事项 泛型参数默认类型 示例 新的--strict 主要编译选项 改进的--init 输出 --checkJS 选项下 .js...

TypeScript 3.5 改进速度 类型检查速度提升 改进 --incremental Omit 辅助类型 改进了联合类型中多余属性的检查 --allowUmdGlobalAccess 标志 更智能的联合类型检查 泛型构造函数的高阶类型推断 参考 TypeScript 3.5 改进速度 TypeScript 3.5 为...

模版字面量类型 在映射类型中更改映射的键 递归的有条件类型 索引访问类型检查（--noUncheckedIndexedAccess ） 不带 baseUrl 的 paths checkJs 默认启用 allowJs React 17 JSX 工厂 在编辑器中支持 JSDoc @see 标签 破坏性改动 lib.d.ts 更新 a...

The TypeScript Handbook About this Handbook How is this Handbook Structured Non-Goals Get Started The TypeScript Handbook About this Handbook Over 20 years after its intr...

TypeScript 1.6 JSX support New .tsx file extension and as operator Using React Using other JSX framworks Output generation Intersection types Example Local type declarati...

TypeScript 1.8 Type parameters as constraints Example Control flow analysis errors Unreachable code Example Unused labels Example Implicit returns Example Case clause fal...

TypeScript 2.2 Support for Mix-in classes First some terminology Putting all of the above rules together in an example object type Support for new.target Example Better ch...

TypeScript 2.6 Strict function types Example Note Cache tagged template objects in modules Example Localized diagnostics on the command line Example Suppress errors in .ts ...

TypeScript 2.9 Support number and symbol named properties with keyof and mapped types Example Example Recommendations Generic type arguments in JSX elements Example Gener...