export declare class AlternativeStorage implements Storage {
    private storageMap;
    get length(): number;
    clear(): void;
    getItem(key: string): string | null;
    key(index: number): string | null;
    removeItem(key: string): void;
    setItem(key: string, value: string): void;
    [key: string]: any;
    [index: number]: string;
}
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