selectionChanged

chart.addEventListener('selectionChanged', event => {
  console.log(event.detail); // SankeySelectionChangeEventDetail | ChordSelectionChangeEventDetail | NetworkGraphSelectionChangeEventDetail | TreemapSelectionChangeEventDetail | SunburstSelectionChangeEventDetail | IcicleSelectionChangeEventDetail | GanttSelectionChangeEventDetail | ParallelCoordinatesSelectionChangeEventDetail | DendrogramSelectionChangeEventDetail | GeoMapSelectionChangeEventDetail | Surface3DSelectionChangeEventDetail | Scatter3DSelectionChangeEventDetail | FlowLinesSelectionChangeEventDetail | ThemeRiverSelectionChangeEventDetail | Bar3DSelectionChangeEventDetail
});