import type { LoaderContext, SwcLoaderParserConfig, experiments } from '@rspack/core';
type Swc = (typeof experiments)['swc'];
type Logger = ReturnType<LoaderContext['getLogger']>;
export declare function isTypeScriptSource(fileName: string): boolean;
export declare function isTSXSource(fileName: string): boolean;
export declare function getProjectBabelConfig(filename: string, projectRoot?: string): import("@babel/core").BabelProjectConfig;
export declare function getExtraBabelPlugins(filename: string): (string | [string, Record<string, any>])[];
export declare function getSwcParserConfig(filename: string): SwcLoaderParserConfig;
export declare function checkParallelModeAvailable(loaderContext: LoaderContext, logger: Logger): void;
export declare function getProjectRootPath(loaderContext: LoaderContext): string | undefined;
export declare const lazyGetSwc: (loaderContext: LoaderContext) => Promise<Swc | null>;
export {};