Javascript CASH MACHINE

cash-machine.js

//*** CASH MACHINE ***//

//THE PROBLEM
//Develop a solution that simulate the delivery of notes when a client does a withdraw in a cash machine.

//THE BASIC REQUIREMENTS ARE THE FOLLOW:
// Always deliver the lowest number of possible notes;
// It's possible to get the amount requested with available notes;
// The client balance is infinite;
// Amount of notes is infinite;
// Available notes R$ 100,00; R$ 50,00; R$ 20,00 e R$ 10,00

(function(){
  'use strict';

  function iWantToGet(ammountRequired){
    var availableNotes = [100, 50, 20, 10],
        result = [];

    if(ammountRequired && ammountRequired > 0) {
      while(ammountRequired > 0) {
        for (var i = 0; i < availableNotes.length; i++) {
          var note = availableNotes[i];
          if(ammountRequired - note >= 0) {
            ammountRequired -= note;
            result.push(note);
            break;
          } else if(i === availableNotes.length - 1 && ammountRequired > 0) {
              throw 'NoteUnavailableException';
          }
        }
      }
    } else if(ammountRequired <= 0) {
      throw 'InvalidArgumentException';
    }

    return result;
  }

  console.log(iWantToGet(160));

})();