message: fix(edges): draw connection line when there are no edges closes
diff: @@ -5,6 +5,8 @@ import { isEdgeVisible } from '../container/EdgeRenderer/utils';
  import { ReactFlowState, NodeInternals, Edge } from '../types';
  import { isNumeric } from '../utils';
  +const defaultEdgeTree = [{ level: 0, isMaxLevel: true, edges: [] }];
  +
  function groupEdgesByZLevel(edges: Edge[], nodeInternals: NodeInternals) {
  let maxLevel = -1;
  @@ -23,7 +25,7 @@ function groupEdgesByZLevel(edges: Edge[], nodeInternals: NodeInternals) {
  return tree;
  }, {});
  - return Object.entries(levelLookup).map(([key, edges]) => {
  + const edgeTree = Object.entries(levelLookup).map(([key, edges]) => {
  const level = +key;
  return {
  @@ -32,6 +34,12 @@ function groupEdgesByZLevel(edges: Edge[], nodeInternals: NodeInternals) {
  isMaxLevel: level === maxLevel,
  };
  });
  +
  + if (edgeTree.length === 0) {
  + return defaultEdgeTree;
  + }
  +
  + return edgeTree;
  }
  function useVisibleEdges(onlyRenderVisible: boolean, nodeInternals: NodeInternals) {
  