break string into two segments if found in dictionary

gistfile1.txt

function breakWord(stringToBreak, dictionary) {
  for (var i = 1; i <= stringToBreak.length; i++) {
     var prefix = stringToBreak.substring(0, i);
    


      if(dictionary.has(prefix)) {
        var suffix = stringToBreak.substring(i, stringToBreak.length);
 
       
        if(dictionary.has(suffix)) {
          return prefix + ' ' + suffix;
        }
      }
  }
  return null;
}





var mySet = new Set();


mySet.add("huge");
mySet.add("breakthrough");

var inputString = "hugebreakthrough";

var result = breakWord(inputString, mySet);

console.log(result);