in src/js/popup/popup.js [1826:1838]
getStorageItem: async (key) => {
const result = await browser.storage.local.get(key);
const item = result[key];
if (
item &&
item.expirationTime &&
item.expirationTime < new Date().getTime()
) {
await browser.storage.local.remove(key);
return undefined;
}
return item?.value;
},