Function groupBy

Groups an array into key accessible groups of objects

Param: iterable

iterable items to group

Param: keySelector

function to get the group by key

groupBy<T, I = T, K extends string | number = string>(
    iterable: Iterable<T>,
    keySelector: keyof T | ((item: T) => undefined | K),
    itemSelector?: (item: T) => I,
): Record<K, I[]>
Groups an array into key accessible groups of objects
Type Parameters
- T
- I = T
- K extends string | number = string
Parameters
- iterable: Iterable<T>
  iterable items to group
- keySelector: keyof T | ((item: T) => undefined | K)
  function to get the group by key
- OptionalitemSelector: (item: T) => I
Returns Record<K, I[]>
- Defined in packages/util/src/collection.ts:158
groupBy<T, K extends string | number, I = T>(
    iterable: Iterable<T>,
    keySelector: (item: T) => Promise<undefined | K>,
    itemSelector?: (item: T) => I,
): Promise<Record<K, I[]>>
Groups an array into key accessible groups of objects
Type Parameters
- T
- K extends string | number
- I = T
Parameters
- iterable: Iterable<T>
  iterable items to group
- keySelector: (item: T) => Promise<undefined | K>
  function to get the group by key
- OptionalitemSelector: (item: T) => I
Returns Promise<Record<K, I[]>>
- Defined in packages/util/src/collection.ts:168