I do not know typescript and I have not found any information anywhere, is such a construction possible?
export enum Something {
'qwe' = 1,
'rty' = 2,
'uio' = 3,
}
1 Answer
If your goal is to have an enum, just drop the quotes.
enum Something {
qwe = 1,
rty = 2,
uio = 3,
}
If you want to use literal strings, you can just declare a type
type Something = 'qwe' | 'rty' | 'uio';
If you want the strings and their associations to integers, you can declare an object and then use keyof.
const Something = {
qwe: 1,
rty: 2,
uio: 3,
}
type Something = keyof typeof Something;
This uses declaration merging, so the two Something names we declare are in distinct namespaces. The type Something is defined in terms of the value Something.
Now Something is a type whose value is any string key in the value Something, and we can write Something[x] to convert a value of that type (again, a string) into the corresponding number.
If you're writing new Typescript code, I recommend just going with the enum and dropping the quotation marks; it's what enum is for. But if you have an existing code base that already does it with strings, then the latter approaches can be useful.
['qwe'] = 1, ['rty'] = 2, ['uio'] = 3,. But this is exactly the same asqwe = 1, rty = 2, uio = 3.