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fixed crash when there is invalid JSON in local storage

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This commit is contained in:
Jan Prochazka
2022-02-07 21:15:11 +01:00
parent e14e55fd94
commit 8592039b56
1 changed files with 10 additions and 1 deletions
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11
packages/web/src/stores.ts
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@@ -18,9 +18,18 @@ export interface TabDefinition {
tabOrder?: number; 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) { export function writableWithStorage<T>(defaultValue: T, storageName) {
const init = localStorage.getItem(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 => { res.subscribe(value => {
localStorage.setItem(storageName, JSON.stringify(value)); localStorage.setItem(storageName, JSON.stringify(value));
}); });