import type { ThemeBuilder } from './engine/builder';
import type { BaseTheme } from './types';
/**
 * Check if a theme with the specified name is registered.
 *
 * @param {string} themeName The theme name.
 * @returns {boolean}
 */
export declare function hasTheme(themeName: string): boolean;
/**
 * Get a registered theme by name.
 *
 * @param {string} themeName The theme name.
 * @returns {object|undefined} The theme or undefined if not found.
 */
export declare function getTheme(themeName: string): ThemeBuilder | undefined;
/**
 * Get all registered theme names.
 *
 * @returns {string[]}
 */
export declare function getThemeNames(): string[];
/**
 * Get all registered themes.
 *
 * @returns {object[]}
 */
export declare function getThemes(): ThemeBuilder[];
/**
 * Register a theme.
 *
 * @param {string|object} themeNameOrConfig Theme name for specific theme or object representing theme config.
 * @param {object} [themeConfig] The theme config object (optional if first parameter has already theme config).
 * @returns {object} The registered theme (ThemeBuilder instance).
 */
export declare function registerTheme(themeNameOrConfig: string | BaseTheme, themeConfig?: BaseTheme): ThemeBuilder;
/**
 * Reinitialize an existing theme with a new configuration.
 *
 * @param {string|object} themeNameOrConfig Theme name for specific theme or object representing theme config.
 * @param {object} [themeConfig] The theme config object to reinitialize (optional if first parameter has already theme config).
 * @returns {object|undefined} The reinitialized theme (ThemeBuilder instance) or undefined if theme not found.
 */
export declare function reinitTheme(themeNameOrConfig: string | BaseTheme, themeConfig?: BaseTheme): ThemeBuilder | undefined;