isEmpty

isEmpty.js

/** Determines if passed value is empty or not.
 *  Works on multiple data types.
**/
const isEmpty = data => {
  let count = 0;
  if (typeof (data) === 'number' || typeof (data) === 'boolean') { return false; }
  if (typeof (data) === 'undefined' || data === null) { return true; }
  if (typeof (data.length) !== 'undefined') { return data.length === 0; }
  Object.keys(data).forEach(() => { count += 1; });
  return count === 0;
};