export declare function dateToStr(date: Date): string | null;
export declare function strToDate(str: string): Date | null;
export declare function arrayToStr<T>(array: T[]): string;
export declare function strToArray<T>(str: string): T[];
export declare function objectToStr<T>(obj: T): string;
export declare function strToObject<T>(str: string): T;
export declare function strToBoolean(str: string): boolean;
export declare function clone<T>(a: T): T;
export declare function strToStr(str: string): string;
export declare function mapToObject<K, V>(map: Map<K, V>): any;
export declare function objectToMap(object: Object): Map<string, any>;