import { type Tree } from '@nx/devkit';
import { type SupportedRspackMajorVersion } from './versions';
/**
 * Returns the declared @rspack/core major version from the workspace's
 * package.json when it matches a supported major, or `undefined` otherwise
 * (fresh install, dist tag, unknown major). Below-floor enforcement is
 * handled at generator entry points via `assertSupportedRspackVersion`.
 */
export declare function getInstalledRspackMajorVersion(tree: Tree): SupportedRspackMajorVersion | undefined;
/**
 * Returns the installed @rspack/core major version resolved at runtime from
 * node_modules. For use in executors and runtime code where no Tree is
 * available. Returns `null` when @rspack/core can't be resolved or the
 * installed major isn't supported.
 */
export declare function getInstalledRspackVersionRuntime(): SupportedRspackMajorVersion | null;
/**
 * Returns the version-map entry for the installed major, falling back to the
 * latest supported map when no installed version is detected (fresh install)
 * or the detected major is outside the supported window.
 */
export declare function getRspackVersionsForInstalledMajor(tree: Tree): {
    rspackCoreVersion: string;
    rspackDevServerVersion: string;
    rspackPluginReactRefreshVersion: string;
};