Today we’re excited to announce the release of TypeScript 5.4! If you’re not familiar with TypeScript, it’s a language that builds on top of JavaScript by making it possible to declare and describe types. Writing types in our code allows us to explain intent and have other tools check our code to catch mistakes like typos, issues with null and undefined, and more. Types also power TypeScript’s editor tooling like the auto-completion, code navigation, and refactorings that you might see in Visual Studio and VS Code. In fact, if you’ve been writing JavaScript in either of those editors, you’ve b ..read more

Today we’re excited to announce our Release Candidate of TypeScript 5.4! Between now and the stable release of TypeScript 5.4, we expect no further changes apart from critical bug fixes. To get started using the RC, you can get it through NuGet, or through npm with the following command: npm install -D typescript@rc Here’s a quick list of what’s new in TypeScript 5.4! Preserved Narrowing in Closures Following Last Assignments The NoInfer Utility Type Object.groupBy and Map.groupBy Support for require() calls in --moduleResolution bundler and --module preserve Checked Import Attributes and A ..read more

Today we are excited to announce the availability of TypeScript 5.4 Beta. To get started using the beta, you can get it through NuGet, or through npm with the following command: npm install -D typescript@beta Here’s a quick list of what’s new in TypeScript 5.4! Preserved Narrowing in Closures Following Last Assignments The NoInfer Utility Type Object.groupBy and Map.groupBy Support for require() calls in --moduleResolution bundler and --module preserve Checked Import Attributes and Assertions Quick Fix for Adding Missing Parameters Upcoming 5.5 Deprecations Breaking Changes Preserved Narro ..read more

Today we’re excited to announce the release of TypeScript 5.3! If you’re not familiar with TypeScript, it’s a language that adds type syntax to JavaScript to bring type-checking. Type-checking can catch all sorts of issues like typos and forgetting to check for null and undefined. But types go beyond type-checking – the same analyses of TypeScript’s type-checker are used for rich editor tooling like auto-completion, code navigation, and refactorings. In fact, if you’ve been writing JavaScript in editors like Visual Studio or VS Code, that experience is powered by TypeScript! To get started usi ..read more

Today we’re excited to announce our Release Candidate of TypeScript 5.3! Between now and the stable release of TypeScript 5.3, we expect no further changes apart from critical bug fixes. To get started using the RC, you can get it through NuGet, or through npm with the following command: npm install -D typescript@rc Here’s a quick list of what’s new in TypeScript 5.3! Import Attributes Stable Support resolution-mode in Import Types resolution-mode Supported in All Module Modes switch (true) Narrowing Narrowing On Comparisons to Booleans instanceof Narrowing Through Symbol.hasInstance Checks ..read more

Today we are excited to announce the availability of TypeScript 5.3 Beta. To get started using the beta, you can get it through NuGet, or through npm with the following command: npm install -D typescript@beta Here’s a quick list of what’s new in TypeScript 5.3! Import Attributes Stable Support resolution-mode in Import Types switch (true) Narrowing Narrowing On Comparisons to Booleans instanceof Narrowing Through Symbol.hasInstance Checks for super Property Accesses on Instance Fields Interactive Inlay Hints for Types Optimizations by Skipping JSDoc Parsing Optimizations by Comparing Non-No ..read more

Today we’re excited to announce the release of TypeScript 5.2! If you’re not familiar with TypeScript, it’s a language that builds on top of JavaScript by making it possible to declare and describe types. Writing types in our code allows us to explain intent and have other tools check our code to catch mistakes like typos, issues with null and undefined, and more. Types also power TypeScript’s editor tooling like the auto-completion, code navigation, and refactorings that you might see in Visual Studio and VS Code. In fact, if you’ve been writing JavaScript in either of those editors, you’ve b ..read more

Today we’re excited to announce our Release Candidate of TypeScript 5.2! Between now and the stable release of TypeScript 5.2, we expect no further changes apart from critical bug fixes. To get started using the RC, you can get it through NuGet, or through npm with the following command: npm install -D typescript@rc Here’s a quick list of what’s new in TypeScript 5.2! using Declarations and Explicit Resource Management Decorator Metadata Named and Anonymous Tuple Elements Easier Method Usage for Unions of Arrays Type-Only Import Paths with TypeScript Implementation File Extensions Comma Com ..read more

Today we are excited to announce the availability of TypeScript 5.2 Beta. To get started using the beta, you can get it through NuGet, or through npm with the following command: npm install -D typescript@beta Here’s a quick list of what’s new in TypeScript 5.2! using Declarations and Explicit Resource Management Decorator Metadata Named and Anonymous Tuple Elements Easier Method Usage for Unions of Arrays Comma Completions for Object Members Inline Variable Refactoring Breaking Changes and Correctness Fixes using Declarations and Explicit Resource Management TypeScript 5.2 adds support for ..read more

Today we’re excited to announce our Release Candidate of TypeScript 5.1! Between now and the stable release of TypeScript 5.1, we expect no further changes apart from critical bug fixes. To get started using the RC, you can get it through NuGet, or through npm with the following command: npm install -D typescript@rc Here’s a quick list of what’s new in TypeScript 5.1! Easier Implicit Returns for undefined-Returning Functions Unrelated Types for Getters and Setters Decoupled Type-Checking Between JSX Elements and JSX Tag Types Namespaced JSX Attributes typeRoots Are Consulted In Module Resol ..read more