...or just use typescript and get red squiggles in your IDE (...or when compiling if not using and IDE) and you don't have to go manually check your UI or write

...or just use typescript and get red squiggles in your IDE (...or when compiling if not using and IDE) and you don't have to go manually check your UI or write a unit test to make sure you provided the right type. Your approach sounds totally unscalable beyond a small project to me - you can't go manually eye ball your entire UI on every change. Just let the computer handle this trivia and concentrate your efforts on adding value I say. Sure it takes an hour or two to set up the tooling, but once you are up and running there is no overhead (unless you consider defining types an overhead). Compiles take a fraction of a second and the browser has usually already reloaded itself before you've even physically moved your eyes over to the other monitor