Get a random item and remove it from an array

JavaScript

const randomItem = (arr) => arr.splice((Math.random() * arr.length) | 0, 1)

TypeScript

const randomItem = <T,>(arr: T[]): T => arr.splice((Math.random() * arr.length) | 0, 1) as unknown as T

Examples

const arr = [1, 3, 5, 7, 9]
randomItem(arr) // 7
// arr = [1, 3, 5, 9]