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

TypeScript 3.3 改进调用联合类型时的行为 警告 在合复合工程中增量地检测文件的变化 --build --watch TypeScript 3.3 改进调用联合类型时的行为 在 TypeScript 之前的版本中，将可调用类型联合后仅在它们具有相同的参数列表时才能被调用。 type Fruit = "apple" ...

可变参元组类型 标签元组元素 从构造函数中推断类属性 断路赋值运算符 catch 语句中的unknown 类型 自定义JSX工厂 对启用了--noEmitOnError 的`build模式进行速度优化 --incremental 和--noEmit 编辑器改进 转换为可选链 /** @deprecated */ 支持 启动时的局部语义模...

TypeScript 1.3 Protected Tuple types TypeScript 1.3 Protected The new protected modifier in classes works like it does in familiar languages like C++, C#, and Java. A prot...

TypeScript 1.5 ES6 Modules Export Declarations Re-exporting Default Export Bare Import Destructuring in declarations and assignments Declarations Assignments namespace ke...

TypeScript 1.7 async /await support in ES6 targets (Node v4+) Example Support for --target ES6 with --module Example this -typing ES7 exponentiation operator Example Imp...

TypeScript 2.4 Dynamic Import Expressions String Enums Improved inference for generics Return types as inference targets Type parameter inference from contextual types Stricte...

TypeScript 2.7 Constant-named properties Example Example unique symbol Example Example Strict Class Initialization Definite Assignment Assertions Example Fixed Length Tu...

TypeScript 2.8 Conditional Types Example Distributive conditional types Example Example Example Type inference in conditional types Predefined conditional types Example I...

TypeScript 3.4 Faster subsequent builds with the --incremental flag Composite projects outFile Higher order type inference from generic functions Improvements for ReadonlyAr...