(disclaimer: I work on the Flutter team) Yes, strong mode is something the Flutter team uses to help check their code. Dart is pretty cool this way: you can s

(disclaimer: I work on the Flutter team) Yes, strong mode is something the Flutter team uses to help check their code. Dart is pretty cool this way: you can scale up or down how much "typiness" you want. As your program matures, you can dial up the static type checking. Hence: strong mode.