import { ThemeFlavor } from './theme-mapper.js';
/**
 * Gets all themes mapped to UI format.
 * Results are cached for performance.
 */
export declare function getThemes(): ThemeFlavor[];
/**
 * Gets a Set of all valid theme IDs.
 * Results are cached for performance.
 */
export declare function getValidThemeIds(): Set<string>;
/**
 * Resolves a theme by ID, falling back to default if not found.
 *
 * @param themeId - The theme ID to resolve
 * @returns The matching theme, default theme, or first available theme
 */
export declare function resolveTheme(themeId: string): ThemeFlavor | undefined;
/**
 * Validates a theme ID for safety and format correctness.
 *
 * Accepts only alphanumeric characters, hyphens, and underscores.
 * Rejects special characters, unicode, and excessively long IDs.
 *
 * @param id - The value to validate as a theme ID
 * @returns True if the ID is valid, false otherwise
 */
export declare function isValidThemeId(id: unknown): boolean;
/**
 * Sanitizes a theme ID by removing unsafe characters.
 *
 * Removes any characters that could cause DOM/CSS/XSS issues.
 * Used as a fallback when displaying potentially untrusted input.
 *
 * @param id - The theme ID to sanitize
 * @returns The sanitized ID containing only safe characters
 */
export declare function sanitizeThemeId(id: string): string;
/**
 * Resets the cached themes. Used for testing.
 * @internal
 */
export declare function _resetThemeCache(): void;
//# sourceMappingURL=theme-resolver.d.ts.map