Bumblebees

const storageData = {};
for (let i = 0; i < localStorage.length; i++) {
    const key = localStorage.key(i);
    const value = localStorage.getItem(key);
    storageData[key] = value;
}
console.log(storageData); 

for (const key in a) {
    if (a.hasOwnProperty(key)) {
        localStorage.setItem(key, a[key]);
    }
}