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

Hi,

The documentation says

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

Better to disallow NaN and Infinity in enum member value

undefined shouldn't be permitted in it as well.

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