export function getNByNGraph(
{ points, startProp = 'from', destProp = 'to', distProp = 'weight' } :
{ points: IdPt[]; startProp?: string; destProp?: string; distProp?: string }
): IdPt[] {
export function getNByNGraph(
{ points, startProp, destProp, distProp }:
{ points: IdPt[]; startProp: string; destProp: string; distProp: string } =
{ points: [], startProp: 'from', destProp: 'to', distProp: 'weight' }
): IdPt[] {