import { HighlightOptionsWithDefaultValues, ComputedPlacement, IForeignViewContext, ITourDelegate, NoElement, PopoverOptionsWithDefaultValues, Rect, Step, ThemeOptions, TourOptions } from '@thisway/base';
import { Size } from '@thisway/utils';
import { Readable, Writable } from 'svelte/store';
import { HighlightRect } from './overlay.utils';
import { Tour } from './tour';
export type ContextType<T> = symbol & {
    readonly phantomData: T;
};
export declare function defineContext<T>(name: string): ContextType<T>;
export declare function getContext<T>(context: ContextType<T>): T;
export declare function setContext<T>(context: ContextType<T>, value: T): void;
export interface ITourContexts extends Map<unknown, unknown> {
    readonly contextsBrand: unique symbol;
    get<T>(context: ContextType<T>): T | undefined;
    set<T>(context: ContextType<T>, value: T): this;
}
export declare const createContexts: (parentContext?: ITourContexts) => ITourContexts;
export declare const TourContext: ContextType<Tour<any>>;
export declare const OptionsContext: ContextType<Readable<TourOptions>>;
export declare const ElementBoundingContext: ContextType<Readable<NoElement | Rect | undefined>>;
export declare const PopoverContainerContext: ContextType<Writable<HTMLElement | undefined>>;
export declare const PopoverSizeContext: ContextType<Readable<Size>>;
export declare const TotalStepCountContext: ContextType<Readable<number>>;
export declare const PlacementContext: ContextType<Readable<ComputedPlacement | undefined>>;
export declare const DelegateContext: ContextType<ITourDelegate<any, any>>;
export declare const ForeignViewContext: ContextType<IForeignViewContext>;
export declare const HighlightBoundingContext: ContextType<Readable<HighlightRect>>;
export interface RenderState {
    element: Element | NoElement | undefined;
    step: Step | undefined;
}
export declare const RenderStateContext: ContextType<Readable<RenderState>>;
export interface IStepOptionsContext {
    popover: Readable<PopoverOptionsWithDefaultValues>;
    highlight: Readable<HighlightOptionsWithDefaultValues>;
    theme: Readable<Required<ThemeOptions>>;
}
export declare const StepOptionsContext: ContextType<IStepOptionsContext>;