Module src/arrays/groupBy

Const groupBy

• groupBy<T>(array: Array<T>, getGroupKey: string | ((o: object) => string)): Record<string, T[]>

• groupBy - Creates an object composed of keys generated from the results of running each element of array thru getKey

  example

  groupBy(['one', 'two', 'three'], 'length'); // return { '3': ['one', 'two'], '5': ['three'] }

  Type parameters

  • T

  Parameters

  • array: Array<T>

  • getGroupKey: string | ((o: object) => string)

  Returns Record<string, T[]>