From 8592039b563fea1e9f01d52c19bbf04723a55c04 Mon Sep 17 00:00:00 2001
From: Jan Prochazka <jan.prochazka@gmail.com>
Date: Mon, 7 Feb 2022 21:15:11 +0100
Subject: [PATCH] fixed crash when there is invalid JSON in local storage

---
 packages/web/src/stores.ts | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/packages/web/src/stores.ts b/packages/web/src/stores.ts
index 8bc5649fe..7f6885ad7 100644
--- a/packages/web/src/stores.ts
+++ b/packages/web/src/stores.ts
@@ -18,9 +18,18 @@ export interface TabDefinition {
   tabOrder?: number;
 }
 
+function safeJsonParse(json, defaultValue) {
+  try {
+    return JSON.parse(json);
+  } catch (err) {
+    console.error(`Error parsing JSON value "${json}"`, err);
+    return defaultValue;
+  }
+}
+
 export function writableWithStorage<T>(defaultValue: T, storageName) {
   const init = localStorage.getItem(storageName);
-  const res = writable<T>(init ? JSON.parse(init) : defaultValue);
+  const res = writable<T>(init ? safeJsonParse(init, defaultValue) : defaultValue);
   res.subscribe(value => {
     localStorage.setItem(storageName, JSON.stringify(value));
   });