🧩 Creates an array of elements split into two groups: those that pass the predicate and those that don't.
Syntax
TypeScript
import { partition } from '@opentf/std'; partition<T>(arr: T[] = [], predicate: (val: T, index: number, arr: T[]) => boolean): [T[], T[]]
Parameters
arr: The source array.predicate: The function invoked per element. Receives(value, index, array).
Returns
A tuple of [passing, failing] arrays.
Examples
TypeScript
partition([1, 2, 3, 4, 5], (n) => n % 2 === 0) //=> [[2, 4], [1, 3, 5]] partition([0, 1, false, 2, '', 3], Boolean) //=> [[1, 2, 3], [0, false, '']] partition([1, 2, 3], () => true) //=> [[1, 2, 3], []] partition([1, 2, 3], () => false) //=> [[], [1, 2, 3]]