2727-is-object-empty.js

/**
 * 2727. Is Object Empty
 * https://leetcode.com/problems/is-object-empty/
 * Difficulty: Easy
 *
 * Given an object or an array, return if it is empty.
 *
 * - An empty object contains no key-value pairs.
 * - An empty array contains no elements.
 *
 * You may assume the object or array is the output of JSON.parse.
 */

/**
 * @param {Object|Array} obj
 * @return {boolean}
 */
var isEmpty = function(obj) {
  return !Object.keys(obj).length;
};