typescript enum to string

1enum AnEnum {
2    One = 1,
3    Two = 2
4}
5let stringOne = AnEnum[1]; // "One"
6let stringTwo = AnEnum[AnEnum.Two]; // "Two"

1enum Direction {
2    Up,
3    Down,
4    Left,
5    Right,
6}
7

1enum Response {
2    No = 0,
3    Yes = 1,
4}
5
6function respond(recipient: string, message: Response): void {
7    // ...
8}
9
10respond("Princess Caroline", Response.Yes)
11

1enum Number {
2  One,
3  Two
4}  
5
6const numberOne: Number = "One" as Number;
7const otherNumberOne: Number = Number.One;
8
9const stringOne = Number[Number.One];