/** * Return a shallow copy of an array with two items swapped. * * @param {Array} array - The source array * @param {Number} leftIndex - Index of the first item * @param {Number} rightIndex - Index of the second item * @returns {Array} new array with the left and right items swapped */ export const swapArrayItems = (array, leftIndex = 0, rightIndex = 0) => { const copy = array.slice(); if (leftIndex >= array.length || leftIndex < 0 || rightIndex >= array.length || rightIndex < 0) { return copy; } const temp = copy[leftIndex]; copy[leftIndex] = copy[rightIndex]; copy[rightIndex] = temp; return copy; };