How to use the d3-geo.geoStream function in d3-geo

declare const stream: d3Geo.GeoStream;

stream.point(0, 0);
stream.point(0, 0, 0);
stream.lineStart();
stream.lineEnd();
stream.polygonStart();
stream.polygonEnd();
stream.sphere();

// geoStream(...) ========================================================

d3Geo.geoStream(samplePolygon, stream);
d3Geo.geoStream(sampleSphere, stream);
d3Geo.geoStream(sampleGeometryCollection, stream);
d3Geo.geoStream(sampleExtendedGeometryCollection, stream);
d3Geo.geoStream(sampleFeature, stream);
d3Geo.geoStream(sampleExtendedFeature1, stream);
d3Geo.geoStream(sampleExtendedFeature2, stream);
d3Geo.geoStream(sampleFeatureCollection, stream);
d3Geo.geoStream(sampleExtendedFeatureCollection, stream);

stream.point(0, 0);
stream.point(0, 0, 0);
stream.lineStart();
stream.lineEnd();
stream.polygonStart();
stream.polygonEnd();
stream.sphere();

// geoStream(...) ========================================================

d3Geo.geoStream(samplePolygon, stream);
d3Geo.geoStream(sampleSphere, stream);
d3Geo.geoStream(sampleGeometryCollection, stream);
d3Geo.geoStream(sampleExtendedGeometryCollection, stream);
d3Geo.geoStream(sampleFeature, stream);
d3Geo.geoStream(sampleExtendedFeature1, stream);
d3Geo.geoStream(sampleExtendedFeature2, stream);
d3Geo.geoStream(sampleFeatureCollection, stream);
d3Geo.geoStream(sampleExtendedFeatureCollection, stream);

// ----------------------------------------------------------------------
declare const stream: d3Geo.GeoStream;

stream.point(0, 0);
stream.point(0, 0, 0);
stream.lineStart();
stream.lineEnd();
stream.polygonStart();
stream.polygonEnd();
stream.sphere();

// geoStream(...) ========================================================

d3Geo.geoStream(samplePolygon, stream);
d3Geo.geoStream(sampleSphere, stream);
d3Geo.geoStream(sampleGeometryCollection, stream);
d3Geo.geoStream(sampleExtendedGeometryCollection, stream);
d3Geo.geoStream(sampleFeature, stream);
d3Geo.geoStream(sampleExtendedFeature1, stream);
d3Geo.geoStream(sampleExtendedFeature2, stream);
d3Geo.geoStream(sampleFeatureCollection, stream);
d3Geo.geoStream(sampleExtendedFeatureCollection, stream);

stream.lineStart();
stream.lineEnd();
stream.polygonStart();
stream.polygonEnd();
stream.sphere();

// geoStream(...) ========================================================

d3Geo.geoStream(samplePolygon, stream);
d3Geo.geoStream(sampleSphere, stream);
d3Geo.geoStream(sampleGeometryCollection, stream);
d3Geo.geoStream(sampleExtendedGeometryCollection, stream);
d3Geo.geoStream(sampleFeature, stream);
d3Geo.geoStream(sampleExtendedFeature1, stream);
d3Geo.geoStream(sampleExtendedFeature2, stream);
d3Geo.geoStream(sampleFeatureCollection, stream);
d3Geo.geoStream(sampleExtendedFeatureCollection, stream);

stream.lineStart();
stream.lineEnd();
stream.polygonStart();
stream.polygonEnd();
stream.sphere();

// geoStream(...) ========================================================

d3Geo.geoStream(samplePolygon, stream);
d3Geo.geoStream(sampleSphere, stream);
d3Geo.geoStream(sampleGeometryCollection, stream);
d3Geo.geoStream(sampleExtendedGeometryCollection, stream);
d3Geo.geoStream(sampleFeature, stream);
d3Geo.geoStream(sampleExtendedFeature1, stream);
d3Geo.geoStream(sampleExtendedFeature2, stream);
d3Geo.geoStream(sampleFeatureCollection, stream);
d3Geo.geoStream(sampleExtendedFeatureCollection, stream);

// ----------------------------------------------------------------------
// Stream interface
// ----------------------------------------------------------------------
declare const stream: d3Geo.GeoStream;

stream.point(0, 0);
stream.point(0, 0, 0);
stream.lineStart();
stream.lineEnd();
stream.polygonStart();
stream.polygonEnd();
stream.sphere();

// geoStream(...) ========================================================

d3Geo.geoStream(samplePolygon, stream);
d3Geo.geoStream(sampleSphere, stream);
d3Geo.geoStream(sampleGeometryCollection, stream);
d3Geo.geoStream(sampleExtendedGeometryCollection, stream);
d3Geo.geoStream(sampleFeature, stream);
d3Geo.geoStream(sampleExtendedFeature1, stream);
d3Geo.geoStream(sampleExtendedFeature2, stream);
d3Geo.geoStream(sampleFeatureCollection, stream);
d3Geo.geoStream(sampleExtendedFeatureCollection, stream);

function fitExtent(projection, extent, object) {
    const w = extent[1][0] - extent[0][0];
    const h = extent[1][1] - extent[0][1];
    const clip = projection.clipExtent && projection.clipExtent();

    projection
        .scale(150)
        .translate([0, 0]);

    if (clip != null) projection.clipExtent(null);

    geoStream(object, projection.stream(boundsStream));

    const b = boundsStream.result();
    const k = Math.min(w / (b[1][0] - b[0][0]), h / (b[1][1] - b[0][1]));
    const x = +extent[0][0] + (w - k * (b[1][0] + b[0][0])) / 2;
    const y = +extent[0][1] + (h - k * (b[1][1] + b[0][1])) / 2;

    if (clip != null) projection.clipExtent(clip);

    return projection
        .scale(k * 150)
        .translate([x, y]);
}

function projectGeometry(o, stream) {
  if (!o) return null;
  if (o.type === "GeometryCollection") return projectGeometryCollection(o, stream);
  var sink;
  switch (o.type) {
    case "Point": sink = sinkPoint; break;
    case "MultiPoint": sink = sinkPoint; break;
    case "LineString": sink = sinkLine; break;
    case "MultiLineString": sink = sinkLine; break;
    case "Polygon": sink = sinkPolygon; break;
    case "MultiPolygon": sink = sinkPolygon; break;
    case "Sphere": sink = sinkPolygon; break;
    default: return null;
  }
  geoStream(o, stream(sink));
  return sink.result();
}

    rotateStream.sphere = function() { geoStream(sphere, sphereStream); };
    return rotateStream;