/**
 * Represents the payload for a navigation start event.
 */
export interface NavigationStartPayload {
    /**
     * The URL from which the navigation originated.
     *
     * @type {string | undefined}
     */
    oldUrl: string | undefined;
    /**
     * The URL to which the navigation ended.
     *
     * @type {string | undefined}
     */
    newUrl: string | undefined;
    /**
     * Cancels the ongoing navigation.
     *
     * @param cancellationPayload - The payload required to cancel the navigation.
     * This depends on the navigation implementation. For example, in Angular it can be a native or custom event,
     * while in single-spa it can be boolean or a Promise whose result determines whether the navigation is canceled.
     */
    cancelNavigation: (cancellationPayload: unknown) => void;
}