TypeScript 5.0 has been rebuilt around the use of ECMAScript modules

TypeScript 5.0 has been released, bringing a variety of new features and improvements. Included in the new version is the addition of decorators standard, improved support for ESM projects in Node and bundlers, new ways for library authors to control generic inference, expanded JSDoc functionality, simplified configuration, and more. Additionally, the development team has restructured the entire codebase to use ECMAScript modules, resulting in a smaller, simpler, and faster package size and improved performance.