calculateDistanceBetweenCoordinates.js

calculateDistanceBetweenCoordinates = (firstCoordinate, secondCoordinate) => {
  const PI = 0.017453292519943295;
  
  var haversine = 0.5 - Math.cos((secondCoordinate.latitude - firstCoordinate.latitude) * PI) / 2 + 
  Math.cos(firstCoordinate.latitude * PI) * Math.cos(secondCoordinate.latitude * PI) * 
          (1 - Math.cos((secondCoordinate.longitude - firstCoordinate.longitude) * PI)) / 2;

  return 12742 * Math.asin(Math.sqrt(haversine)); // 2 * EARTH_RADIUS (6371);
}

console.log(calculateDistanceBetweenCoordinates(first, second) * 1000);