/**
 * Direction values accepted by the `direction` attribute on `<r-link>`.
 * When set, the link triggers back/forward in the named target's history
 * instead of navigating to a route by name.
 */
export type RouteLinkDirection = 'back' | 'forward';
export declare class RouteLink extends HTMLElement {
    static get observedAttributes(): string[];
    constructor();
    private handleClick;
    private handleDirectionClick;
    connectedCallback(): void;
    attributeChangedCallback(name: string): void;
    /**
     * Keeps `aria-disabled` in sync with whether the linked target has
     * history to walk. Lets CSS react via `[aria-disabled="true"]`.
     */
    private updateDirectionState;
    disconnectedCallback(): void;
}