/**
 * Preview Server — Manages the Vite-based HTML preview environment
 * that renders all generated components, pages, and dataviz.
 */
import type { Registry } from "../engine/registry.js";
export declare class PreviewServer {
    private process;
    private projectRoot;
    private port;
    constructor(projectRoot: string, port?: number);
    /**
     * Generate the preview gallery index that auto-imports all generated components.
     */
    buildGallery(registry: Registry): Promise<void>;
    start(): void;
    stop(): void;
    get url(): string;
}