refactor(internals): make prop optional

2022-05-26 20:57:12 +02:00
parent ee7084b5dc
commit 2ed3ffe818
8 changed files with 30 additions and 14 deletions
@@ -18,8 +18,8 @@ function groupEdgesByZLevel(edges: Edge[], nodeInternals: NodeInternals, elevate
      z = hasZIndex
        ? edge.zIndex!
        : Math.max(
-            nodeInternals.get(edge.source)?.[internalsSymbol].z || 0,
-            nodeInternals.get(edge.target)?.[internalsSymbol].z || 0
+            nodeInternals.get(edge.source)?.[internalsSymbol]?.z || 0,
+            nodeInternals.get(edge.target)?.[internalsSymbol]?.z || 0
          );
    }