Function groupBy

groupBy<T = unknown, K = unknown>(
    collection: T[],
    keyFunc: Callback<K>,
    hashFunc?: HashFunction,
): Map<K, T[]>
Groups the collection into sets by the returned key
Type Parameters
- T = unknown
- K = unknown
Parameters
- collection: T[]
- keyFunc: Callback<K>
  {Function} to compute the group key of an item in the collection
- hashFunc: HashFunction = DEFAULT_HASH_FUNCTION
Returns Map<K, T[]>
- Defined in src/util/_internal.ts:485