/**
 * Browser detection utilities
 * Centralizes all browser language detection logic
 */
/**
 * Detect the browser's preferred language
 * @returns The detected language code or null if not available
 */
export declare function detectBrowserLanguage(): string | null;
/**
 * Get the browser's preferred language, matching against available locales
 * @param availableLocales - List of supported locales
 * @returns The matched locale or null if no match found
 */
export declare function getBrowserLocale(availableLocales?: string[]): string | null;
/**
 * Check if we're in a browser environment
 */
export declare function isBrowser(): boolean;