import { type TransformOptions } from '@babel/core';
import { type BuiltinBabelOptions } from '../types/types-loader-options.js';
import { type ModularImportOption } from '../types/types-modular-import.js';
export declare const mergeBabelOption: (serveMode: boolean, modularImports?: ModularImportOption[], options?: BuiltinBabelOptions, projectCwd?: string) => TransformOptions;