Array Item Toggle

A helper function to check if an item is:

• in an array -> remove it from the array,
• not in the array -> add it to the array

Usage

import toggle from 'array-item-toggle';

toggle([1, 2, 3], 1)

// returns a new array = [2, 3];

toggle([2, 3], 1)

// returns a new array = [2, 3, 1];