/** Tells a run whether the browser already animated its navigation, e.g. a swipe back on a phone. */
export type UATransitions = {
    /**
     * An id for that navigation while its entry is current, else undefined.
     * Each handle cuts once per id. User input clears it, so later runs play.
     */
    current(): number | undefined;
};
export type NavigationLike = EventTarget & {
    currentEntry?: {
        key?: string;
    } | null;
};
export type WindowLike = EventTarget & {
    location: {
        href: string;
    };
};
export declare function createUATransitions(navigation: NavigationLike | undefined, win: WindowLike | undefined): UATransitions;
/** One store per document. It starts listening on first use. */
export declare function sharedUATransitions(): UATransitions;