From 63fa11c44eee0fafbd47acdf0ecdb310fa9c7641 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E4=BE=9D=E7=91=AA=E8=B2=93?= <imacat@mail.imacat.idv.tw>
Date: Mon, 9 Mar 2026 14:10:17 +0800
Subject: [PATCH] Wrap localStorage JSON.parse in try-catch in cytoscapeMap

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
---
 src/module/cytoscapeMap.js | 38 +++++++++++++++++++-------------------
 1 file changed, 19 insertions(+), 19 deletions(-)

diff --git a/src/module/cytoscapeMap.js b/src/module/cytoscapeMap.js
index e50d535..85f501d 100644
--- a/src/module/cytoscapeMap.js
+++ b/src/module/cytoscapeMap.js
@@ -328,26 +328,26 @@ export default function cytoscapeMap(
     cytoscapeStore.loadPositionsFromStorage(rank);
     // Check if localStorage has previously saved visit data.
     // If saved node positions exist, restore them for rendering.
-    if (
-      localStorage.getItem(SAVE_KEY_NAME) &&
-      JSON.parse(localStorage.getItem(SAVE_KEY_NAME))
-    ) {
-      const allGraphsRemembered = JSON.parse(
-        localStorage.getItem(SAVE_KEY_NAME),
-      );
-      const currentGraphNodesRemembered = allGraphsRemembered[
-        cytoscapeStore.currentGraphId
-      ]
-        ? allGraphsRemembered[cytoscapeStore.currentGraphId][rank]
-        : null; // May be undefined
-      if (currentGraphNodesRemembered) {
-        currentGraphNodesRemembered.forEach((nodeRemembered) => {
-          const nodeToDecide = cy.getElementById(nodeRemembered.id);
-          if (nodeToDecide) {
-            nodeToDecide.position(nodeRemembered.position);
-          }
-        });
+    try {
+      const raw = localStorage.getItem(SAVE_KEY_NAME);
+      if (raw) {
+        const allGraphsRemembered = JSON.parse(raw);
+        const currentGraphNodesRemembered = allGraphsRemembered[
+          cytoscapeStore.currentGraphId
+        ]
+          ? allGraphsRemembered[cytoscapeStore.currentGraphId][rank]
+          : null; // May be undefined
+        if (currentGraphNodesRemembered) {
+          currentGraphNodesRemembered.forEach((nodeRemembered) => {
+            const nodeToDecide = cy.getElementById(nodeRemembered.id);
+            if (nodeToDecide) {
+              nodeToDecide.position(nodeRemembered.position);
+            }
+          });
+        }
       }
+    } catch {
+      // Corrupted localStorage data; ignore and use defaults
     }
     // Save the current positions of all nodes when the view is first entered
     const allNodes = cy.nodes();