After updating TypeScript to version 1.7 (the latest version at the moment), I see Resharper errors, for example, when using namespace , const and let , although they must be supported by this version of TypeScript.
For example:
TypeScript 1.x. Current language - 1.4

and
Lexical declarations (let and const) require the assignment of an ECMAScript 6 compiler. The current goal is ECMAScript 5.

Nicholas
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