#pragma once

#include <chrono>

using TimePoint = std::chrono::time_point<std::chrono::system_clock, std::chrono::nanoseconds>;
using TimeMs = long;

inline TimeMs timeDeltaMs(const TimePoint& point) {
  const auto now = std::chrono::system_clock::now();
  return std::chrono::duration_cast<std::chrono::milliseconds>(now - point).count();
}