I’ve literally just put ts-ignore in many many files. The reason was legacy stuff, we had the ts check off (which blocks a merge if it failed), because there were just too many files that would need fixing. We thought about the best way to add the check so that new files have to have proper types, while having an easy way to slowly fix old ones.

We decided to go with ts-ignore for every file and a lint warning for the same line. So you see it in each file if it needs to be fixed, but you’re not going blind for red ts errors everywhere or don’t have the check at all.