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TypeScript 5.0 has been released with new features aimed at making the language smaller, simpler, and faster. Some of the new features include support for the new decorators standard, better support for ESM projects in Node and bundlers, expanded JSDoc functionality, simplified configuration, and improvements in speed, memory, and package size optimization.
The release also includes breaking changes and deprecations. Decorators, an upcoming ECMAScript feature, allow developers to customize classes and their members in a reusable way.
Decorators can be used on more than just methods and can be used on properties/fields, getters, setters, and auto-accessors. The release also notes differences with experimental legacy decorators and provides guidance for writing well-typed decorators.
The release is not disruptive and aims to provide an upgrade experience similar to previous releases.
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