Why isn't script preprocessing enabled by default in TypeScript template?

[gyzerok]

Is there something inherently bad about it? What should I consider before enabling it? Unfortunately the docs do not answer this.

[brunnerh]

Svelte 5 has basic TypeScript support built-in without the need for a pre-processor.
You only need it for features that need more that type erasure (e.g. its enum keyword).

So the main questions are whether you need those features and whether the loss in performance due to additional processing is acceptable.

[gyzerok]

I see, thank you!