Microsoft has released a beta version of TypeScript 5.4. TypeScript is a programming language that was developed by Microsoft. It is comparable to JavaScript in that it incorporates static typing and type annotations as optional features.

TypeScript 5.4 Beta

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:

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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

Announcing TypeScript 5.4 Beta - TypeScript