typesafe-storage/src/utils/isStorageAvailable.ts

Typesafe Web Storage API wrapper to support objects and arrays

// https://developer.mozilla.org/ja/docs/Web/API/Web_Storage_API/Using_the_Web_Storage_API
const isStorageAvailable = (storage: Storage): boolean => {
  try {
    const key = '__typesafe-storage_test__';
    storage.setItem(key, key);
    storage.removeItem(key);
    return true;
  } catch (e) {
    return (
      e instanceof DOMException &&
      // everything except Firefox
      (e.code === 22 ||
        // Firefox
        e.code === 1014 ||
        // test name field too, because code might not be present
        // everything except Firefox
        e.name === 'QuotaExceededError' ||
        // Firefox
        e.name === 'NS_ERROR_DOM_QUOTA_REACHED') &&
      // acknowledge QuotaExceededError only if there's something already stored
      storage &&
      storage.length !== 0
    );
  }
};

export default isStorageAvailable;