/**
 * Deep clones a JSON object.
 * @param obj - The JSON object to clone.
 * @returns A deep clone of the JSON object.
 */
export declare function deepClone<T>(obj: T): T;
/**
 * Converts a JSON object to a query string.
 * @param obj - The JSON object to convert.
 * @returns A query string representation of the JSON object.
 */
export declare function jsonToQueryString(obj: Record<string, any>): string;
/**
 * Converts a query string to a JSON object.
 * @param queryString - The query string to convert.
 * @returns A JSON object representation of the query string.
 */
export declare function queryStringToJson(queryString: string): Record<string, any>;
/**
 * Checks if a JSON object is empty (has no keys).
 * @param obj - The JSON object to check.
 * @returns True if the JSON object is empty, false otherwise.
 */
export declare function isEmpty(obj: Record<string, any>): boolean;
/**
 * Flattens a nested JSON object.
 * @param obj - The JSON object to flatten.
 * @param prefix - The prefix for nested keys.
 * @returns A flattened JSON object.
 */
export declare function flattenJson<T>(obj: T, prefix?: string): Record<string, any>;
/**
 * Un-flattens a JSON object.
 * @param obj - The flattened JSON object to un-flatten.
 * @returns A nested JSON object.
 */
export declare function unFlattenJson<T>(obj: Record<string, any>): T;
/**
* Merges two JSON objects deeply.
* @param obj1 - The first JSON object.
* @param obj2 - The second JSON object.
* @returns A new JSON object with merged properties.
*/
export declare function deepMergeJson<T>(obj1: T, obj2: T): T;
/**
 * Converts a JSON object to a formatted string.
 * @param obj - The JSON object to format.
 * @param indent - The number of spaces to use for indentation (default is 2).
 * @returns A formatted JSON string.
 */
export declare function prettyPrintJson(obj: Record<string, any>, indent?: number): string;
/**
 * Parses a JSON string safely, with error handling.
 * @param jsonString - The JSON string to parse.
 * @returns The parsed JSON object or null if parsing fails.
 */
export declare function safeParseJson<T>(jsonString: string): T | null;
/**
 * Gets the difference between two JSON objects.
 * @param obj1 - The first JSON object.
 * @param obj2 - The second JSON object.
 * @returns An object representing the difference between the two objects.
 */
export declare function getJsonDifference(obj1: Record<string, any>, obj2: Record<string, any>): Record<string, any>;
/**
 * Gets the common keys between two JSON objects.
 * @param obj1 - The first JSON object.
 * @param obj2 - The second JSON object.
 * @returns An array of keys that are present in both objects.
 */
export declare function getCommonKeys(obj1: Record<string, any>, obj2: Record<string, any>): string[];
/**
 * Converts a JSON array to a CSV string.
 * @param obj - The JSON array to convert.
 * @returns A CSV string representation of the JSON array.
 */
export declare function jsonToCsv(obj: Record<string, any>[]): string;