Consider the image below:
- How can I configure Resharper's language level for ECMAScript 6?
In Resharper 2016 this has been renamed to ECMAScript 2015. It's available under
Resharper Options | Code Editing | Javascript | Inspections
ReSharper 9.2 uses ECMAScript version specified in Project Properties | Typescript Build | ECMAScript version. 
来源：https://stackoverflow.com/questions/32995066/how-can-i-configure-resharpers-language-level-for-ecmascript-6