Reverse-Mapping for String Enums

Question

I wanted to use string enums in typescript but I can\'t see a support for reversed mapping in it. I have an enum like this:

enum Mode {
    Silent = \"Silent         


        

Answer 1

The cleanest way I found so far is to make a secondary map:

let reverseMode = new Map();
Object.keys(Mode).forEach((mode: Mode) => {
    const modeValue: string = Mode[mode];
    reverseMode.set(modeValue, mode);
});

Thus you can do let mode: Mode = reverseMode.get('Silent');

Advantages: no need to repeat the values, provides a way to enumerate the enum, keeps TSLint happy...

Edit: I originally write Mode[mode] but then TS might throw the error TS7015 on this line, so I added the cast.