export interface LocalStorageOptions {
    prefix?: string;
    useJSON?: boolean;
    fallback?: Map<string, string>;
}
export declare class LocalStorageManager {
    private static instance;
    static getInstance(): LocalStorageManager;
    setValue(key: string, value: unknown): void;
    getValue<_T>(key: string): string | null;
    removeValue(key: string): void;
    clearStorage(): void;
}
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