From 3e6bac65a9cc13718866d9dda2cf86856cc17a3a Mon Sep 17 00:00:00 2001
From: Zeu Capua <zeucapua@gmail.com>
Date: Wed, 17 Jan 2024 00:38:48 -0800
Subject: [PATCH] try catch error if local storage is undefiend when parsed

---
 src/lib/stores.svelte.ts | 12 +++++++++---
 src/routes/+page.svelte  |  2 +-
 2 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/src/lib/stores.svelte.ts b/src/lib/stores.svelte.ts
index c799954..ef1c4f5 100644
--- a/src/lib/stores.svelte.ts
+++ b/src/lib/stores.svelte.ts
@@ -3,12 +3,18 @@ const browser_exists = (typeof window !== "undefined") && (typeof (document) !==
 const storage = browser_exists ? localStorage : null;
 
 // Generalized Local Storage
-function persisted<T>(key: string, initial_value: T) {
-  let value : T = $state(initial_value);
+function persisted<T>(key: string, default_value: T) {
+  let value : T = $state(default_value);
 
   const initial_local = storage?.getItem(key);
   if (initial_local) {
-    value = JSON.parse(initial_local).value as T;
+    try {
+      value = JSON.parse(initial_local).value as T;
+      if (!value) { update(default_value); }
+    } 
+    catch (e) {
+      update(default_value);
+    }
   }
 
   function update(new_value : T) {
diff --git a/src/routes/+page.svelte b/src/routes/+page.svelte
index b2b72a7..af7c3a1 100644
--- a/src/routes/+page.svelte
+++ b/src/routes/+page.svelte
@@ -4,7 +4,7 @@
   $effect(() => console.log(todo_list));
 
   // TODO: get better ID management
-  let id = 0;
+  let id = $state(0);
   let description = $state("");
 
   function randomizeId() {
-- 
2.51.2