export interface Storage {
    get(key: string): string | null;
    set(key: string, value: string): void;
    remove(key: string): void;
    clear(): void;
}
export declare class StorageService implements Storage {
    private static instance;
    private readonly prefix;
    private constructor();
    static get Instance(): StorageService;
    private getKey;
    get(key: string): string | null;
    set(key: string, value: string): void;
    remove(key: string): void;
    clear(): void;
}
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