/**
 * buildThumbnailOverride
 *
 * Builds a Puck `componentItem` override that shows a schematic SVG thumbnail
 * alongside the component name and a drag-handle affordance.
 *
 * The caller provides a `thumbnailMap` — a plain record from component name to
 * a zero-argument React function component that renders the SVG wireframe.
 * Unknown names fall back to a generic line-stub placeholder so the drawer
 * always looks consistent even if a thumbnail hasn't been designed yet.
 *
 * Layout: [thumbnail 48×32] [name — flex 1] [grip dots]
 */
import React from 'react';
import type { PuckOverrides } from '../plugin/index.js';
/** A zero-argument React component that renders a thumbnail SVG. */
export type ThumbnailFC = React.FC;
/** Map from Puck component name to its thumbnail component. */
export type ThumbnailMap = Record<string, ThumbnailFC>;
/**
 * Returns a partial `PuckOverrides` object containing a `componentItem` override
 * that renders a thumbnail, the component name, and a drag-handle affordance.
 *
 * Pass the result to `useP1Editor`'s `additionalOverrides` or merge it with
 * your existing overrides.
 */
export declare function buildThumbnailOverride(thumbnailMap: ThumbnailMap): Partial<PuckOverrides>;