export interface IStorageWrapper {
    set(value: string | null | undefined): boolean;
    get(): string | null | undefined;
    delete(): boolean;
}
export declare class LocalStorageWrapper implements IStorageWrapper {
    #private;
    value: string | null | undefined;
    constructor(key: string);
    set(value: string | null | undefined): boolean;
    get(): string | null | undefined;
    delete(): boolean;
}