Как найти длину самого короткого слова в строке?

var s = "bitcoin take over the world maybe who knows perhaps" 
var a = s.split(/\W+/) 
var l = a.map(e => e.length) 
var r = Math.min(...l) 
 
console.log(r)

function findShort(s){ 
 return s.split(" ").sort(function(a,b){ 
   return a.length - b.length; 
 }).shift() 
} 
console.log(findShort("bitcoin take over the world maybe who knows perhaps").length)