method toMap

Source

Map toMap() {
  Map m = {"ts": ts, "value": value};
  if (count == 0) {
    m["count"] = 0;
  } else if (count > 1) {
    m["count"] = count;
    if (sum.isFinite) {
      m["sum"] = sum;
    }
    if (max.isFinite) {
      m["max"] = max;
    }
    if (min.isFinite) {
      m["min"] = min;
    }
  }
  return m;
}