import type { InstallerOptions } from '../../utils/types.js';
export declare function getNextJsVersionBucket(version: string | undefined): string;
export declare enum NextJsRouter {
    APP_ROUTER = "app-router",
    PAGES_ROUTER = "pages-router"
}
export declare function getNextJsRouter({ installDir }: Pick<InstallerOptions, 'installDir'>): Promise<NextJsRouter>;
export declare const getNextJsRouterName: (router: NextJsRouter) => "app router" | "pages router";