import { Plugin } from '../plugin';
import { ThumbnailLayerBuilder } from './thumbnail-layer-builder';
export declare class ThumbnailPlugin extends Plugin {
    protected layerBuilders: (typeof ThumbnailLayerBuilder)[];
    private thumbnailSidebarItem;
    get sidebarManager(): import('../sidebar').SidebarManager | undefined;
    protected onLoad(): void;
    protected destroy(): void;
}
