/**
 * Preview Renderer for Momentum CMS
 *
 * Generates a styled HTML page from document data and collection config.
 * Used by the built-in preview endpoint to render live previews in the admin iframe.
 */
import type { CollectionConfig, Field } from '@momentumcms/core';
/** Custom field renderer: receives the field value and returns an HTML string to embed. */
export type CustomFieldRenderer = (value: unknown, field: Field) => string;
/** Options for rendering a preview HTML page. */
export interface PreviewRenderOptions {
    /** Document data to render */
    doc: Record<string, unknown>;
    /** Collection configuration */
    collection: CollectionConfig;
    /**
     * Optional custom field renderers keyed by `admin.editor` value.
     * When a field's `admin.editor` matches a key, the custom renderer is used
     * instead of the default switch-case logic.
     */
    customFieldRenderers?: Record<string, CustomFieldRenderer>;
}
/**
 * Render a styled HTML preview page from document data.
 *
 * The page includes:
 * - Styled rendering of each visible field
 * - Inline CSS for responsive layout
 * - postMessage listener for live updates from the admin form
 *
 * Security: All field values (including rich text) are HTML-escaped in both
 * the initial server render and the client-side postMessage handler.
 */
export declare function renderPreviewHTML(options: PreviewRenderOptions): string;