interface InternalStorage {
    set(key: string, value: any): void;
    getString(key: string): string | undefined;
    contains(key: string): boolean;
    clearAll(): void;
    getAllKeys(): string[];
    delete(key: string): void;
}
export declare class Storage {
    private storage;
    constructor(storage: InternalStorage);
    contains(key: string): boolean;
    setItem(key: string, value: any): void;
    getItem(key: string): any;
    getAllKeys(): string[];
    clearAll(): void;
    deleteItem(key: string): void;
}
export declare const storage: Storage;
export declare function useStorage(): Storage;
export {};