declare namespace StorageUtil { function setItem(name: string, data: T, opts?: { type?: "session" | "local"; itemName?: string; }): void; function getItem(name: string, opts?: { type?: "session" | "local"; itemName?: string; }): T; function removeItem(name: string, opts?: { type?: "session" | "local"; itemName?: string; }): void; function clear(opts?: { type?: "session" | "local"; }): void; } export default StorageUtil;