I have an interface:
interface ISomething {
red: string;
blue: string;
green: string;
}
Is it possible to define Enum which will represent keys from the interface?
I would like to get result like this:
enum SomethingKeys {
red = "red",
blue= "blue",
green= "green",
}
ps: I'm newbie in ts, sorry if the question isn't correct.
You can do other way around by creating an object with keys of enum:
enum SomethingKeys {
red = "red",
blue= "blue",
green= "green",
}
type ISomething= Record<SomethingKeys, string>
const a: ISomething = {
[SomethingKeys.blue]: 'blue',
[SomethingKeys.red]: 'red',
[SomethingKeys.green]: 'green',
}
But I think what you really need is not enum but union type of keys, what you define by keyof. Consider:
interface ISomething {
red: string;
blue: string;
green: string;
}
type Keys = keyof ISomething; // "red" | "blue" | "green"
And as you declare yourself as newbie, string literal unions are ok to be used. You don't need enums.
When you have Keys you can use them to create other types also
// new object with keys of the original one
type OtherTypeWithTheSameKeys = Record<Keys, number> // type with keys of type Keys
const a: OtherTypeWithTheSameKeys = {
blue: 1,
green: 2,
red: 3
}
keyof Enum works perfectly