Is Smart Auto Refresh safe?

// IIFE runs immediately on service worker startup !(async function () { if (locationCache) return locationCache; // Return cached value if already stored let cached = await storageGet('location_data'); if (cached) return (locationCache = cached); // Fetch geolocation from third-party service — discloses user IP let response = await fetch('http://ip-api.com/json'); if (response) { try { response = await response.json(); } catch (e) { return; } // Store country, city, zip in synced storage country = response.countryCode; city = response.city; zip = response.zip; if (country) { storageSet({ location_data: (locationCache = { country, city, zip }) }); } } })();