I used to think this way too, but working over the years with TypeScript has gotten me so accustomed to it that it’s now the other way around. I feel much more

I used to think this way too, but working over the years with TypeScript has gotten me so accustomed to it that it’s now the other way around. I feel much more productive in TS in general. With TS its like you’re writing the unit test and your code at the same time, and if your types are expressed well enough you can also skip the compile+run+verify step. I’ve had cases where I would spend days just writing code, refactoring and iterating, without building the project once, compile it at the end, and have a complex feature work correctly on first try, passing all the functional tests. It’s like I have a pair working with me constantly compiling my code and pointing out syntax and interface errors while I concentrate on the business logic and big picture stuff. When I go back to JS it’s as if I now have to do all that manual labour too, as well as constantly write and run unit tests myself to make sure what I write actually works. Though it definitely took some time to get this comfortable with the TS type system.