Yeah. That's one thing I love about Flow/TypeScript as opposed to "real" compiled languages: you can actually leave type errors present if you don't know how to

Yeah. That's one thing I love about Flow/TypeScript as opposed to "real" compiled languages: you can actually leave type errors present if you don't know how to take care of them at the moment, and do a successful build. Or, if you know you're doing something safe and the analyzer just can't understand that, you can literally comment-out the error. And of course, Rust has "unsafe" mode. In my experience it's important to have tiered strictness; start out with the highest constraints, but provide mechanisms for stepping that down in special cases where you really have to, without giving up safety completely if possible.