Variable group`Const`

group: <T, TKey extends string | number | symbol>(
keySelector: (entry: T) => TKey,
) => CollectorFunction<T, Record<TKey, T[]>> = groupByRecord

Type declaration

- <T, TKey extends string | number | symbol>(
  keySelector: (entry: T) => TKey,
  ): CollectorFunction<T, Record<TKey, T[]>>
- Groups the source by a key selector.
  Type Parameters
  - T
    Type of items in the source.
  - TKey extends string | number | symbol
    Type of the key.
  Parameters
  - keySelector: (entry: T) => TKey
    Key selector function.
  Returns CollectorFunction<T, Record<TKey, T[]>>
  Collector that groups the source by a key selector.
  Example
```
const result = groupByRecord<number, string>((x) => x % 2 === 0 ? "even" : "odd")([1, 2, 3, 4]);
console.log(result);
// {
//   'odd': [1, 3],
//   'even': [2, 4],
// }
```