Rotate point around another point

function rotatePoint(point, pivot, angle) {
  let dx = point.x - pivot.x;
  let dy = point.y - pivot.y;
  let radians = angle * DEG2RAD;
  let sin = Math.sin(radians);
  let cos = Math.cos(radians);
  let x = Math.round(pivot.x + cos * dx - sin * dy);
  let y = Math.round(pivot.y + sin * dx + cos * dy);
  return new Point(x, y);
}