Function group

group<TObject, TKeys>(iterable, ...keys): NestedInternMap<TObject, TObject[], TKeys>
Groups the specified iterable of values into an InternMap from key to array of value.
Type Parameters
- TObject
- TKeys extends unknown[]
Parameters
- iterable: Iterable<TObject>
  The iterable to group.
- Rest ...keys: {
  [Index in string | number | symbol]: ((value, index, values) => TKeys[Index])
  }
  The key functions.
Returns NestedInternMap<TObject, TObject[], TKeys>