Firstly: they could just start using TypeScript if they really care that much about type erros, since TS is a superset of JavaScript they can start using it wit

Firstly: they could just start using TypeScript if they really care that much about type erros, since TS is a superset of JavaScript they can start using it with their existing code, so there is no excuse not to use it. Secondly: it's ridiculous that their way of handling type errors is by just silently hiding them. They could be making a lot of errors that will become really hard to find this way. Thirdly: performing type checking on runtime in JavaScript is just stupid, things like this could be performed at "compile time" with TypeScript or the Google Closure Compiler.