The rule I tend to follow is "annotate as little as possible". This has worked out great for me so far since TypeScript's inference gets it right 90% of the tim

The rule I tend to follow is "annotate as little as possible". This has worked out great for me so far since TypeScript's inference gets it right 90% of the time and it leads to more maintainable code. Also after coding 5 days a week for a full year with it I really can't relate to the idea that it is somehow unpredictable. I think, like most things, you eventually get a "feel" for it and don't even have to think about it. That's what I love most about it. It feels like it takes up no extra mental real estate for me. It's excellent at never "getting in the way" (when used properly)