CollectionBase

type CollectionBase<TKey, TOutput> = Pick<SortedMap<TKey, TOutput>, 
  | "size"
  | "get"
  | "has"
  | "keys"
  | "values"
  | "entries"
| typeof Symbol.iterator>;

type CollectionBase<TKey, TOutput> = Pick<SortedMap<TKey, TOutput>, 
  | "size"
  | "get"
  | "has"
  | "keys"
  | "values"
  | "entries"
| typeof Symbol.iterator>;