Question: ExclusiveArray

[chris-schra]

Dear All,

I'm not even sure if it is possible, but a lot of times we convert Props to Array. Use case: imagine a "Cached Model":

export class CachedModel {
  id: CacheIdentifier<number>;
  locale: CacheIdentifier<string>;
  noIdentifier: string;
}

I can already extract the keys:
type ExtractCacheIdentifierKeys<Model extends CachedModel> = ConditionalKeys<Model, CacheIdentifier<string | number>>;

But what if I need to construct an array of all the keys? Like

const cacheIdentifiersToUse:Array<ExtractCacheIdentifierKeys<CachedModel>> = ["id","id"]

How would it be possible to make sure that each key of ExtractedKeys does only exist once in the array?

[sindresorhus]

How would it be possible to make sure that each key of ExtractedKeys does only exist once in the array?

Sounds like you should be using a Set.

[chris-schra]

Oh what a shame… absolutely correct… I‘ll better leave now 😂