import type { RawSourceMap } from "source-map";
import type { TransformOptions } from "./types.js";
/**
 * Transforms a module and returns the transformed code with source map attached.
 * This is used by the loader to transform modules and attach source maps.
 *
 * @returns The transformed code with source map attached as a URL comment
 */
export type TransformModuleIfNeededFn = (source: string, moduleId: string, options: TransformOptions) => Promise<{
    code: string;
    map: RawSourceMap | null;
}>;
/**
 * Transforms a module using acorn-loose for parsing.
 * @returns Object containing the transformed code and its source map
 */
export declare const transformModuleIfNeeded: TransformModuleIfNeededFn;
//# sourceMappingURL=transformModuleIfNeeded.d.ts.map