What's new in TypeScript 4.2

What's new in TypeScript 4.2

What's new in TypeScript 4.2? Version 4.2 of TypeScript was released in February 2021, with new features, bug fixes, and performance improvements. Find out more here.

Version 4.2 of TypeScript was released on 23 February, 2021, and with it a number of nice features, bug fixes, and performance improvements. Here are the most important ones you should be aware of.

  • TypeScript 4.2’s top enhancements
    • More flexible rest elements in tuple types
    • Increased visibility into which files are included in your compiled program
    • Better support for unused destructured variables
    • Smarter type system and performance improvements

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