Identifique la realizacion de un modo alternado de los procesos ("PROC1" , "PROC1"y "PROC2" de forma indefinida.

Script
function processes(arr) {
  var obj = {};
  var p1_count = 0;
  var p2_count = 0;
  var a = 0;
  var b = 0;
  for (var i = 0; i < arr.length; i++) {
    if (arr[i] === "PROC1") {
      p1_count += 1;
      a = p1_count;
    } else {
      p2_count += 1;
      b = p2_count;
    }
    if (a === b) {
      obj[arr[i]] = b;
      a = 0;
      b = 0;
    }
  }
  return obj;
}

processes(["PROC1", "PROC1", "PROC1", "PROC2", "PROC2", "PROC2"]);