How to use @turf/transform-scale - 3 common examples

switch (getType(obstacles)) {
    case 'FeatureCollection':
        if (obstacles.features.length === 0) return lineString([startCoord, endCoord]);
        break;
    case 'Polygon':
        obstacles = featureCollection([feature(getGeom(obstacles))]);
        break;
    default:
        throw new Error('invalid obstacles');
    }

    // define path grid area
    var collection = obstacles;
    collection.features.push(start);
    collection.features.push(end);
    var box = bbox(scale(bboxPolygon(bbox(collection)), 1.15)); // extend 15%
    if (!resolution) {
        var width = distance([box[0], box[1]], [box[2], box[1]], options);
        resolution = width / 100;
    }
    collection.features.pop();
    collection.features.pop();

    var west = box[0];
    var south = box[1];
    var east = box[2];
    var north = box[3];

    var xFraction = resolution / (distance([west, south], [east, south], options));
    var cellWidth = xFraction * (east - west);
    var yFraction = resolution / (distance([west, south], [west, north], options));
    var cellHeight = yFraction * (north - south);

getScaleAction(startDragPoint: Position, currentPoint: Position, editType: string): EditAction {
    const startPosition = startDragPoint;
    const centroid = turfCentroid(this._geometryBeingScaled);
    const factor = getScaleFactor(centroid, startPosition, currentPoint);
    const scaledFeatures = turfTransformScale(this._geometryBeingScaled, factor, {
      origin: centroid
    });

    let updatedData = this.getImmutableFeatureCollection();

    const selectedIndexes = this.getSelectedFeatureIndexes();
    for (let i = 0; i < selectedIndexes.length; i++) {
      const selectedIndex = selectedIndexes[i];
      const movedFeature = scaledFeatures.features[i];
      updatedData = updatedData.replaceGeometry(selectedIndex, movedFeature.geometry);
    }

    return {
      updatedData: updatedData.getObject(),
      editType,
      featureIndexes: selectedIndexes,

export function scaleBbox(bbox: BBox, scale: number) {
  return turfbbox(transformScale(bboxPolygon(bbox), scale));
}