Get Enum Name as String in TypeScript

Question

I'm trying to find a way to convert the name of an enum to a string. If I have the Response enum below, how can I convert or extract 'Response' to a string? One of my functions takes any enum as input and I need the name, not the type of enum to execute other code.

enum Response 
{
    No = 0,
    Yes = 1 
}

Answer 1

No, you can't convert an enum name to a string as type information is stored only during compilation. You have to pass additional parameters, specifying what enum are you using.

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But you can use square brackets to convert enum value to a string and back:

Fiddle

enum YesNo {
    No = 0,
    Yes = 1, 
}

console.log(YesNo[YesNo.Yes]);
console.log(YesNo[YesNo.No]);
console.log(YesNo["Yes"]);
console.log(YesNo["No"]);
console.log(YesNo[1]);
console.log(YesNo[0]);

This code compiles into:

var YesNo;
(function (YesNo) {
YesNo[YesNo["No"] = 0] = "No";
YesNo[YesNo["Yes"] = 1] = "Yes";
})(YesNo || (YesNo = {}));
console.log(YesNo[YesNo.Yes]);
console.log(YesNo[YesNo.No]);
console.log(YesNo["Yes"]);
console.log(YesNo["No"]);
console.log(YesNo[1]);
console.log(YesNo[0]);