Znajdź Max z Countby
var array = [3, 'a', 'a', 'a', 2, 3, 'a', 3, 'a', 2, 4, 9, 3];
var result = _.head(_(array)
.countBy()
.entries()
.maxBy(_.last));
console.log(result);
Relieved Rattlesnake