ts_temp/array/last.js

/**
 * Returns the last element of the given array.
 *
 * @param {Array} arr
 * @return {*}
 * @example
 *
 *      last(['fi', 'fo', 'fum']); //=> 'fum'
 *      last([]); //=> undefined
 */
export default ((arr) => arr && arr[arr.length - 1]);