[dimgl]

I agree that just JavaScript is okay for simple applications. In fact I didn't use TypeScript for a really long time because getting the tooling going can be cumbersome at first.

TypeScript shines with complex webapps. Having the typing prevents a whole class of issues and helps with refactoring quite a bit.

[jacquesm]

Yes, agreed. And small projects tend to grow to much larger projects over time so it may well make sense to choose Typescript even if your project is still small.