/**
 * Unified persistence module for i18n locale management
 * Handles both client-side (localStorage) and universal (cookie + localStorage) persistence
 */
interface PersistenceConfig {
    cookieName?: string;
    storageKey?: string;
    enableBrowserDetection?: boolean;
}
/**
 * Get locale from cookies (works on both server and client)
 */
export declare function getLocaleFromCookie(cookieString: string, cookieName?: string): string | null;
/**
 * Set locale in cookie (client-side only)
 */
export declare function setLocaleCookie(locale: string, cookieName?: string): void;
/**
 * Get locale from localStorage (client-side only)
 */
export declare function getLocaleFromStorage(storageKey?: string): string | null;
/**
 * Set locale in localStorage (client-side only)
 */
export declare function setLocaleStorage(locale: string, storageKey?: string): void;
/**
 * Save locale to both cookie and localStorage
 */
export declare function saveLocaleUniversal(locale: string, config?: PersistenceConfig): void;
/**
 * Get initial locale from cookie or localStorage
 * Priority: cookie > localStorage > browser > default
 */
export declare function getInitialLocaleUniversal(defaultLocale: string, cookieString?: string, config?: PersistenceConfig): string;
/**
 * Save the selected locale to localStorage and cookie
 */
export declare function saveLocale(locale: string): void;
/**
 * Load the saved locale from localStorage
 */
export declare function loadSavedLocale(): string | null;
/**
 * Clear the saved locale from both localStorage and cookie
 */
export declare function clearSavedLocale(): void;
/**
 * Get initial locale based on priority:
 * 1. Saved locale from localStorage
 * 2. Browser language
 * 3. Default locale
 */
export declare function getInitialLocale(defaultLocale: string, availableLocales?: string[]): string;
export {};