/**
 * @nexart/ui-renderer - Preview Runtime
 *
 * Simplified p5-like runtime for preview rendering.
 * Same API surface as Code Mode, but optimized for performance.
 *
 * ╔══════════════════════════════════════════════════════════════════════════╗
 * ║  PREVIEW RUNTIME — SAME API, SIMPLIFIED INTERNALS                        ║
 * ║                                                                          ║
 * ║  This runtime:                                                           ║
 * ║  - Uses same function names as Code Mode                                 ║
 * ║  - Is NOT deterministic (performance > fidelity)                         ║
 * ║  - May have simplified implementations                                   ║
 * ║  - Pixel operations may be capped                                        ║
 * ║                                                                          ║
 * ║  For canonical output: use @nexart/codemode-sdk                          ║
 * ╚══════════════════════════════════════════════════════════════════════════╝
 */
export interface PreviewP5Runtime {
    [key: string]: any;
    mode: 'preview';
    width: number;
    height: number;
    frameCount: number;
    VAR: readonly number[];
}
export declare function createPreviewRuntime(canvas: HTMLCanvasElement, width: number, height: number, seed?: number, vars?: number[]): PreviewP5Runtime;
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