It is a compile time error for constant enum expressions to be evaluated to NaN or Infinity.

[kannanwisen]

Hi,

The documentation says

It is a compile time error for constant enum expressions to be evaluated to NaN or Infinity.

But the below code does not throw any compile time error

enum FMixed {
    Data1 = 10 + 0.0 / 0.0,
    Data2 = 0 / 0,
    Data3 = 10 / 0.0
}

console.log("FMixed.Data1 is "+FMixed.Data1);

TypeScript Version is 2.7.1

[kannanwisen]

Better to disallow NaN and Infinity in enum member value

[orzFly]

undefined shouldn't be permitted in it as well.