Write a JavaScript function called isEmpty that takes a single argument and checks if it represents an empty object, collection, map, or set. The function should return true if the input is empty and false otherwise.
Example:
isEmpty({}); // true isEmpty([]); // true isEmpty(new Map()); // true isEmpty(new Set()); // true isEmpty({name: 'John'}); // false isEmpty([1, 2, 3]); // false isEmpty(new Map([['a', 1], ['b', 2]])); // false isEmpty(new Set([1, 2, 3])); // false