Decorators vs. Legacy Decorators

TypeScript has had experimental support for the stage 2 Decorators proposal of ECMAScript for a while. And some tools like Angular have been relying on on this experimental implementation for years. In 2022, the Decorators proposal advanced to stage 3. There are some notable differences between the legacy (stage 2) and the current (stage 3) Decorators proposals.

• https://github.com/tc39/proposal-decorators#how-does-this-proposal-compare-to-other-versions-of-decorators
• https://devblogs.microsoft.com/typescript/announcing-typescript-5-0-beta/#differences-with-experimental-legacy-decorators