/**
* @function isUndefined
* @parent Lang
* @description Checks to see if the provided item is undefined or not
*
* @param thing {Array|String|Object} item to be tested for its existence
* @return {Boolean} will return true if thing is null, undefined, NaN. Otherwise it will return null.
*/
export default function isUndefined(thing) {
return typeof thing === 'undefined';
}