/**
 * Input validation utilities for visual-explainer
 */
import type { Aesthetic, GenerateVisualParams, Theme, VisualType } from "../types.js";
export declare function validateVisualType(type: unknown): VisualType;
export declare function validateAesthetic(aesthetic: unknown): Aesthetic;
export declare function validateTheme(theme: unknown): Theme;
export declare function validateParams(params: unknown): GenerateVisualParams;
export declare function sanitizeFilename(filename: string): string;
export declare function generateDefaultFilename(title: string): string;
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