/**
 * @nexart/ui-renderer - Preview Engine
 * Version: 0.9.0
 *
 * Lightweight, non-authoritative preview executor.
 * Safe, interruptible, and performant.
 *
 * ╔══════════════════════════════════════════════════════════════════════════╗
 * ║  PREVIEW ENGINE — NON-CANONICAL                                          ║
 * ║                                                                          ║
 * ║  This engine is a preview-only runtime.                                  ║
 * ║  It does not guarantee determinism or protocol compliance.               ║
 * ║                                                                          ║
 * ║  v0.9.0 Features:                                                        ║
 * ║  - Budget exceed callbacks + overlay                                     ║
 * ║  - getPreviewStats() for observability                                   ║
 * ║  - toCanonicalRequest() for handoff to @nexart/codemode-sdk              ║
 * ║                                                                          ║
 * ║  Animation runs at native RAF cadence (~60 FPS) per v0.8.8.              ║
 * ║  Budget system uses frame count + time limits (not FPS throttling).      ║
 * ║                                                                          ║
 * ║  For canonical output: use @nexart/codemode-sdk                          ║
 * ╚══════════════════════════════════════════════════════════════════════════╝
 */
import { type PreviewEngineConfig, type PreviewRenderResult, type PreviewRenderer, type CanonicalRequest } from './preview-types';
/**
 * Create a preview renderer for the given configuration.
 *
 * This is the main entry point for preview rendering.
 */
export declare function createPreviewEngine(config: PreviewEngineConfig): PreviewRenderer;
/**
 * Render a static preview (single frame).
 */
export declare function renderStaticPreview(config: PreviewEngineConfig): PreviewRenderResult;
/**
 * Stop any active preview renderer.
 */
export declare function stopActivePreview(): void;
/**
 * Create a canonical request from preview config.
 * For handoff to @nexart/codemode-sdk.
 */
export declare function toCanonicalRequest(config: PreviewEngineConfig): CanonicalRequest;
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