How to use the idb-keyval.del function in idb-keyval

export async function clear(name?: string) {
  const keys = await IDBKeyVal.keys();
  for (const key of keys) {
    if (!name || key === name) {
      console.log(`Deleting ${key}`);
      await IDBKeyVal.del(key);
    }
  }
}

PersistentCache.prototype.delete = function (key) {
        var _this = this;
        assert_1.assert(isAllowedAsKey(key), 'PersistentCache -> The given type of key is not allowed');
        idb_keyval_1.del(key, this.store).catch(function (err) {
            console.warn("PersistentCache -> Delete: { key: " + key + " } has failed with error: " + err);
            _this.memoryCache.delete(key);
        });
    };
    /**

private deleteManifestFile() {
    localStorage.removeItem(this.localStorageKey);
    del(this.idbKey);
  }

async remove(key) {
        if (TdLibController.localStorage) {
            localStorage.removeItem(key);
        } else {
            await del(key);
        }
    }

ks.forEach((key) => {
          del(key, localStorage);
        });

private deleteManifestFile() {
    localStorage.removeItem(this.localStorageKey);
    del(this.idbKey);
  }

public async removeItem(key: string): Promise {
        try {
            await del(key, this.store);
            return true;
        } catch (error) {
            return false;
        }
    }

keys.map((key) => {
        return idbKeyval.del(key);
      })
    ).then(() => {