zeu.dev
Superpowered to do lists. No signup required.
try catch error if local storage is undefiend when parsed
+9
-3
src/lib/stores.svelte.ts
+9
-3
src/lib/stores.svelte.ts
···
3
const storage = browser_exists ? localStorage : null;
4
5
// Generalized Local Storage
6
-
function persisted<T>(key: string, initial_value: T) {
7
-
let value : T = $state(initial_value);
8
9
const initial_local = storage?.getItem(key);
10
if (initial_local) {
11
-
value = JSON.parse(initial_local).value as T;
12
}
13
14
function update(new_value : T) {
···
3
const storage = browser_exists ? localStorage : null;
4
5
// Generalized Local Storage
6
+
function persisted<T>(key: string, default_value: T) {
7
+
let value : T = $state(default_value);
8
9
const initial_local = storage?.getItem(key);
10
if (initial_local) {
11
+
try {
12
+
value = JSON.parse(initial_local).value as T;
13
+
if (!value) { update(default_value); }
14
+
}
15
+
catch (e) {
16
+
update(default_value);
17
+
}
18
}
19
20
function update(new_value : T) {
+1
-1
src/routes/+page.svelte
+1
-1
src/routes/+page.svelte