import { ITourDelegate, NoElement, Rect } from '@thisway/base';
import { Readable } from 'svelte/store';
import { IStepOptionsContext } from './context';
import { HighlightRect } from './overlay.utils';
export declare function getHighlightBounding(bounding$: Readable<Rect | NoElement | undefined>, delegate: ITourDelegate, stepOptionsContext: IStepOptionsContext): Readable<HighlightRect>;