unique

Removes duplicate values from an array. null and undefined are treated as empty arrays and return [].

Available since v1.9.0

Import

import { unique } from '@helpers4/array';
// or, from the all-in-one package (same code, one install):
import { unique } from 'helpers4/array';

unique<T>(array: readonly T[] | null | undefined): T[]

Parameter	Type	Description
`array`	`readonly T[] \| null \| undefined`	The array to remove duplicates from

T[] — New array with unique values only

Returns a new array with duplicate values removed.

unique([1, 2, 2, 3, 3, 3])
// => [1, 2, 3]