Fear, trust and JavaScript: When types and functional programming fail
> in various cases the types are wrong and the compiler doesn’t care<p>It's disturbing how often I encounter this in TypeScript. Or its inverse: the types are correct and the compiler is wrong. Or a third common problem: the types for a library are incorrect. The unsoundness of TypeScript is not merely theoretical. The compiler is frequently just wrong. For that reason, I am mystified by the amount of enthusiasm for TypeScript that I encounter online.