[thrashh]

Not OP but a well-typed codebase means you have to remember less, your broken code gets caught before you even run/compile it, and you can just lean on the type system to write the code for you.

And TypeScript has a much more expressive type system compared to Go, Java, and frankly most languages. Java in particular still has pretty bad type reification (where ArrayList<Integer> and ArrayList<Float> are essentially the same and cannot be used to overload methods, for example).

I use a lot of the utility TypeScript functions (i.e. Partial<>, Record<>) and it catches all sorts of mistakes that might be made by myself in the future or someone not familiar with the codebase. For example, if there has to be a A->B mapping somewhere, I would type B so it would raise a type error if something was added in A but not B. Most type systems are not flexible enough to do anything remotely like that and instead you have to write a bunch of tests where you end up 20 lines of very basic test code for 1 actual line of code.