Since upgrading to 10.0.1, I've started getting what I believe are invalid error messages from the Resharper TypeScript tools:
"Lexical declarations (let and const) require ECMAScript 6 compiler target. Current target is ECMAScript 5."
And Resharper has underlined every "let" and "const" in my TS code.
It's simply not true that these TS values require ES6 - they compile perfectly fine down to ES5 code, and have been since they were introduced into the language. This error didn't show up with 10.0.0, or with 9.x.