/**
 * Utility functions
 */
import type { Duration, SystemInfo } from '../types/index.js';
/**
 * Get the default models directory
 */
export declare function getDefaultModelsPath(): string;
/**
 * Get the default host
 */
export declare function getDefaultHost(): string;
/**
 * Parse duration string or number to milliseconds
 */
export declare function parseDuration(duration: Duration | undefined): number;
/**
 * Format duration in milliseconds to human readable string
 */
export declare function formatDuration(ms: number): string;
/**
 * Format bytes to human readable string
 */
export declare function formatBytes(bytes: number): string;
/**
 * Get system information
 */
export declare function getSystemInfo(): SystemInfo;
/**
 * Sleep for a given number of milliseconds
 */
export declare function sleep(ms: number): Promise<void>;
/**
 * Generate a random port number
 */
export declare function getRandomPort(): number;
/**
 * Compute SHA256 hash of a buffer
 */
export declare function sha256(data: Buffer): Promise<string>;
/**
 * Check if a file exists
 */
export declare function fileExists(path: string): Promise<boolean>;
/**
 * Create directory if it doesn't exist
 */
export declare function ensureDir(path: string): Promise<void>;
/**
 * Deep merge objects
 */
export declare function deepMerge<T extends Record<string, unknown>>(target: T, source: Partial<T>): T;
/**
 * Convert snake_case to camelCase
 */
export declare function snakeToCamel(str: string): string;
/**
 * Convert camelCase to snake_case
 */
export declare function camelToSnake(str: string): string;
/**
 * Convert object keys from snake_case to camelCase
 */
export declare function keysToCamel<T>(obj: unknown): T;
/**
 * Convert object keys from camelCase to snake_case
 */
export declare function keysToSnake<T>(obj: unknown): T;
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