import { BehaviorSubject, Observable } from 'rxjs';
import { PlacementParsed } from './placement';
import { ReadonlyStore } from './store';
import { Tour } from './tour';
import { Transform } from './transform';
import { ITourDelegate, Maybe, NoElement, Step, StepPosition, StepSide } from './types';
export interface RenderState<Extension> {
    element: Maybe<Element> | NoElement;
    step: Step<Extension> | StepSide<Extension> | undefined;
}
export interface AnchorState<Extension> {
    rect: DOMRectReadOnly;
    placement: PlacementParsed;
    offset: number;
    element: Element;
    step: Step<Extension> | StepSide<Extension>;
}
export declare function emptyRenderState<Extension>(): RenderState<Extension>;
export declare function setupRenderState<Extension>(delegate: ITourDelegate<Extension>, step$: Observable<Step<Extension> | StepSide<Extension> | undefined>): ReadonlyStore<RenderState<Extension>>;
export declare function setupAnchor<StepExtension, OptionsExtension>(tour: Tour<StepExtension, OptionsExtension>, rendering$: ReadonlyStore<RenderState<StepExtension>>, floating$: BehaviorSubject<Maybe<HTMLElement>>, transform$: BehaviorSubject<Readonly<Transform>>): Observable<AnchorState<StepExtension>>;
export declare function setupFloating(): {
    floating$: BehaviorSubject<Maybe<HTMLElement>>;
    setFloatingElement: (value: Maybe<HTMLElement>) => void;
};
export declare function setupPosition<StepExtension>(rendering$: ReadonlyStore<RenderState<StepExtension>>, anchor$: Observable<AnchorState<StepExtension>>, floating$: BehaviorSubject<Maybe<HTMLElement>>, container$: BehaviorSubject<HTMLElement | undefined>): Observable<StepPosition>;
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