[jorisd]

I think this is one of the main reasons why TypeScript got so popular, the other reason being the excellent support for it in Visual Studio Code. Before adopting TypeScript, I'd have to read documentation in a wide variety of documentation styles and standards, and then manually ensure that I was calling the right functions with the right arguments (or - alternatively, if I was lazy - I'd just write some shim code and attach a debugger to figure out the call signatures of callback functions). With TypeScript and type hints installed for the libraries I'm using, instead I just let my editor hand out typing information and autocomplete hits, and let the typescript compiler do type checking.

If anything, TypeScript sometimes feels like a nice middle-ground between C# and JavaScript (and Java?), and though it's not perfect, I do feel that it's pleasurable once you get the hang of it and the quirks of the ecosystem.