Turn integer into string without toString()

function makeToString(integer) {
	let string = "";
	let numbers = {
    0: "0",
  	1: "1",
    2: "2",
  	3: "3",
    4: "4",
    5: "5",
    6: "6",
    7: "7",
    8: "8",
    9: "9",
  }
  
  let neg = "";
  
  if (integer < 0) {
  	neg = "-";
    integer = integer * -1;
  }

  let theInteger = integer;
  
  while (theInteger > 0) {
  	let inputNumber = theInteger % 10;
  	string = numbers[inputNumber] + string;
    theInteger = Math.floor(theInteger / 10);
  }


	return neg + string;
}