What’s New in TypeScript 5.0? 50+ Features Boost Speed and Simplicity

Read: TypeScript 5.0 officially released.

TypeScript 5.0, featuring over 50 new features and performance enhancements, includes decorators, improved support for ESM projects in Node and bundlers, and expanded JSDoc capabilities.

Microsoft said in the release announcement:

“Today we are excited to announce the release of TypeScript 5.0! This version brings many new features and aims to make TypeScript smaller, simpler, and faster.”

ESM projects receive better support through Node and bundlers in this version, allowing library authors to control generic inference in new ways.

TypeScript 5.0 also adds many enhancements, such as expanded JSDoc features and simplified configuration, along with optimizations for memory usage, performance, and bundle size.

Despite some breaking changes and deprecations, most developers should encounter no issues upgrading to TypeScript 5.0.

The new version is available via NuGet or NPM, and Visual Studio Code users can follow guidance on using the newer TypeScript.

Various code structures, data structures, and algorithm implementations have been refactored in TypeScript 5.0.

Microsoft added that these changes should make the overall experience faster, and noted that work on TypeScript 5.1 is already underway, with developers able to access it conveniently on GitHub.