The new TypeScript version reduces the tsconfig.json files to the essentials and supports deferring module evaluation and fold-out hover info.

Microsoft has released TypeScript 5.9, featuring 'import defer' for better performance, an improved developer experience, and a roadmap toward a native Go compiler.

TypeScript will enforce this in JavaScript files, but not in TypeScript files. The reason for this is that it provides an easier migration path between original “experimental” decorators and ...

It aligns with Node.js's experimental support for running TypeScript files directly, making it easier to transition from TypeScript to JavaScript execution. Performance Improvements: TypeScript 5.8 ...