happy nums

//Sample code to read in test cases:
var fs  = require("fs");
fs.readFileSync(process.argv[2]).toString().split('\n').forEach(function (line) {
    if (line !== "") {
        //do something here
        //console.log(answer_line);
        var makeArray = function(number) {
          return number
            .toString()
            .split('')
            .map(function(val) {
            return parseInt(val, 10);
          });
        };
        
        var squareDigits = function(array) {
          return array.reduce(function(acc, val) {
            return acc + (val * val);
          }, 0);
        };
        
        var happyNumber = function(number) {
          while (number !== 1) {
              number = squareDigits(makeArray(number));
          }
          return number === 1 ? 1 : 0;
        };
        
        console.log(happyNumber(line));
    }
});