Well, this is not terribly surprising, considering TypeScript's origins in Microsoft. Not adding full IDE support for their core languages (.NET) to VS Code is

Well, this is not terribly surprising, considering TypeScript's origins in Microsoft. Not adding full IDE support for their core languages (.NET) to VS Code is understandable as well, though - the company does not want to jeopardize sales of Visual Studio, their commercial true IDE. In any case, you could argue that VC Code has IDE-level functionality for TypeScript, but I still stand by my general argument.