How to "unwrap" each element in a readonly tuple? #29070

type ExtractType<T extends StoreApi<any>> = T extends StoreApi<infer U>
  ? U
  : never;

type UnwrapStoreApi<T extends StoreApi<any>[]> = T extends [
  infer Head,
  ...infer Tail
]
  ? readonly [ExtractType<Head>, ...UnwrapStoreApi<Tail>]
  : readonly [];