/**
 * Debounce function
 */
export declare function debounce<T extends (...args: any[]) => any>(func: T, wait: number): (...args: Parameters<T>) => void;
/**
 * Throttle function
 */
export declare function throttle<T extends (...args: any[]) => any>(func: T, limit: number): (...args: Parameters<T>) => void;
/**
 * Deep merge objects
 */
export declare function deepMerge<T extends Record<string, any>>(target: T, ...sources: Partial<T>[]): T;
/**
 * Check if value is object
 */
export declare function isObject(item: any): item is Record<string, any>;
/**
 * Generate unique ID
 */
export declare function generateId(prefix?: string): string;
/**
 * Format number with commas
 */
export declare function formatNumber(num: number): string;
/**
 * Clamp number between min and max
 */
export declare function clamp(num: number, min: number, max: number): number;
/**
 * Get cookie value
 */
export declare function getCookie(name: string): string | null;
/**
 * Set cookie
 */
export declare function setCookie(name: string, value: string, days?: number): void;
/**
 * Remove cookie
 */
export declare function removeCookie(name: string): void;
/**
 * Copy text to clipboard
 */
export declare function copyToClipboard(text: string): Promise<boolean>;
/**
 * Parse JSON safely
 */
export declare function parseJSON<T = any>(json: string, fallback?: T): T | undefined;
/**
 * Format date
 */
export declare function formatDate(date: Date | string | number, format?: string): string;
/**
 * Get query string parameter
 */
export declare function getQueryParam(name: string): string | null;
/**
 * Set query string parameter
 */
export declare function setQueryParam(name: string, value: string): void;
/**
 * Remove query string parameter
 */
export declare function removeQueryParam(name: string): void;