a.mts(6,12): error TS7060: This syntax is reserved in files with the .mts or .cts extension. Add a trailing comma or explicit constraint.


==== a.mts (1 errors) ====
    // @see https://github.com/microsoft/TypeScript/issues/44442
    const a = <T,>(arg: T): T => {
      return arg;
    };
    
    const b = <T>(arg: T): T => {
               ~
!!! error TS7060: This syntax is reserved in files with the .mts or .cts extension. Add a trailing comma or explicit constraint.
      return arg;
    };
    