How to use the jsts/org/locationtech/jts/io/OL3Parser function in jsts

applyTopologyOperation(features) {
    super.applyTopologyOperation(features);

    if (features.length < 2) {
      return;
    }

    const parser = new OL3Parser();
    parser.inject(
      Point,
      LineString,
      LinearRing,
      Polygon,
      MultiPoint,
      MultiLineString,
      MultiPolygon,
    );

    for (let i = 1; i < features.length; i += 1) {
      const geom = parser.read(features[0].getGeometry());
      const otherGeom = parser.read(features[i].getGeometry());
      const diffGeom = OverlayOp.difference(geom, otherGeom);
      features[0].setGeometry(parser.write(diffGeom));
      features[i].setGeometry(null);

applyTopologyOperation(features) {
    super.applyTopologyOperation(features);
    const parser = new OL3Parser();
    parser.inject(
      Point,
      LineString,
      LinearRing,
      Polygon,
      MultiPoint,
      MultiLineString,
      MultiPolygon,
    );

    for (let i = 1; i < features.length; i += 1) {
      const geom = parser.read(features[0].getGeometry());
      const otherGeom = parser.read(features[i].getGeometry());
      const unionGeom = OverlayOp.union(geom, otherGeom);
      features[0].setGeometry(parser.write(unionGeom));
      features[i].setGeometry(null);

buffer(width) {
    const parser = new OL3Parser();
    parser.inject(
      Point,
      LineString,
      LinearRing,
      Polygon,
      MultiPoint,
      MultiLineString,
      MultiPolygon,
    );

    const features = this.selectInteraction.getFeatures().getArray();
    for (let i = 0; i < features.length; i += 1) {
      const jstsGeom = parser.read(features[i].getGeometry());
      const bo = new BufferOp(jstsGeom);
      const buffered = bo.getResultGeometry(width);
      features[i].setGeometry(parser.write(buffered));

applyTopologyOperation(features) {
    super.applyTopologyOperation(features);

    if (features.length < 2) {
      return;
    }

    const parser = new OL3Parser();
    parser.inject(
      Point,
      LineString,
      LinearRing,
      Polygon,
      MultiPoint,
      MultiLineString,
      MultiPolygon,
    );

    for (let i = 1; i < features.length; i += 1) {
      const geom = parser.read(features[0].getGeometry());
      const otherGeom = parser.read(features[i].getGeometry());
      const intersectGeom = OverlayOp.intersection(geom, otherGeom);
      features[0].setGeometry(parser.write(intersectGeom));
      features[i].setGeometry(null);