/**
 * General utility functions
 */
/**
 * Generate a unique cache key for a cargo
 */
export declare function generateCargoKey(expozr: string, cargo: string, version?: string): string;
/**
 * Normalize URL by ensuring it ends with a slash
 */
export declare function normalizeUrl(url: string): string;
/**
 * Join URL paths properly
 */
export declare function joinUrl(...parts: string[]): string;
/**
 * Deep merge objects
 */
export declare function deepMerge<T extends Record<string, any>>(target: T, ...sources: Partial<T>[]): T;
/**
 * Create a timeout promise
 */
export declare function createTimeout(ms: number): Promise<never>;
/**
 * Retry a function with exponential backoff
 */
export declare function retry<T>(fn: () => Promise<T>, attempts: number, delay: number, backoff?: number): Promise<T>;
/**
 * Check if code is running in browser environment
 */
export declare function isBrowser(): boolean;
/**
 * Check if code is running in Node.js environment
 */
export declare function isNode(): boolean;
/**
 * Get current timestamp
 */
export declare function timestamp(): number;
/**
 * Format bytes to human readable string
 */
export declare function formatBytes(bytes: number, decimals?: number): string;
/**
 * Debounce function calls
 */
export declare function debounce<T extends (...args: any[]) => void>(func: T, delay: number): (...args: Parameters<T>) => void;
/**
 * Throttle function calls
 */
export declare function throttle<T extends (...args: any[]) => void>(func: T, delay: number): (...args: Parameters<T>) => void;
/**
 * Create a promise that resolves after a delay
 */
export declare function sleep(ms: number): Promise<void>;
/**
 * Check if a value is empty (null, undefined, empty string, empty array, empty object)
 */
export declare function isEmpty(value: any): boolean;
/**
 * Generate a random string
 */
export declare function randomString(length?: number): string;
/**
 * Clamp a number between min and max values
 */
export declare function clamp(value: number, min: number, max: number): number;
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