export declare const externalPageXRouteRef: import("@backstage/frontend-plugin-api").ExternalRouteRef<undefined, false>;
export declare const pageXRouteRef: import("@backstage/frontend-plugin-api").RouteRef<undefined>;
export declare const pagesPlugin: import("@backstage/frontend-plugin-api").BackstagePlugin<{
    page1: import("@backstage/frontend-plugin-api").RouteRef<undefined>;
    pageX: import("@backstage/frontend-plugin-api").RouteRef<undefined>;
}, {
    pageX: import("@backstage/frontend-plugin-api").ExternalRouteRef<undefined, false>;
}>;