in src/components/graph-view.js [1740:1752]
syncRenderEdge(edge: IEdge | any, nodeMoving: boolean = false) {
if (edge.source == null) {
return;
}
// We have to use the 'custom' id when we're drawing a new node
const idVar =
edge.target != null ? `${edge.source}-${edge.target}` : 'custom';
const id = `edge-${idVar}`;
const element = this.getEdgeComponent(edge);
this.renderEdge(id, element, edge, nodeMoving);
}