Get the most used word

let words = "aaa ggg aaa ggg aaa ffff aaa ggg aaa ggg aaa fff rrrr aaa";
let y = _.compose(
          _.get('word'),
          _.head,
          _.orderBy('count', 'desc'),
          _.map(p=>({word:p[0], count:p[1]})),
          _.toPairs,
          _.reduce((acc, next) => {
                     acc[next] = (acc[next] && acc[next]+1) || 1; 
                     return acc;
                   }, {}), 
          _.split(' ')
         )(words);

console.log(y);