/**
 * @fileoverview Dark Mode Manager - Handles dark mode preference and application
 *
 * Manages dark mode state, persistence, and DOM manipulation for the vowel client.
 *
 * @module @vowel.to/client/utils
 * @author vowel.to
 * @license Proprietary
 */
/**
 * Dark mode manager class
 */
export declare class DarkModeManager {
    private isDark;
    private storageKey;
    constructor(storageKeyPrefix?: string);
    /**
     * Initialize dark mode from localStorage or system preference
     */
    private initialize;
    /**
     * Apply dark mode to the document
     */
    private apply;
    /**
     * Get current dark mode state
     */
    getIsDark(): boolean;
    /**
     * Set dark mode state
     */
    setIsDark(isDark: boolean): void;
    /**
     * Toggle dark mode
     */
    toggle(): void;
    /**
     * Listen to system preference changes
     */
    watchSystemPreference(callback?: (isDark: boolean) => void): () => void;
}
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