How to use the geolib.getBounds function in geolib

// Use median to filter out extreme positions to compute more appropriate region
    const lowMiddle = Math.floor((distances.length - 1) / 2);
    const highMiddle = Math.ceil((distances.length - 1) / 2);
    const median = (distances[lowMiddle].distance + distances[highMiddle].distance) / 2;
    const validDistances =
      distances.length > 2
        ? distances
            .filter(({ distance }) => median * 1.5 > distance)
            .slice(0, NO_OF_MARKERS_IN_REGION)
        : distances;

    const coordsByDistance = validDistances
      .map(({ key }) => coordinates[parseInt(key, 10)])
      .filter(Boolean);
    const boundaries = getBounds(coordsByDistance);
    const latitudeDelta = boundaries.maxLat - boundaries.minLat;
    const longitudeDelta = boundaries.maxLng - boundaries.minLng;

    return { longitudeDelta, latitudeDelta };
  };