/**
 * A plugin for the esbuild
 * convert code to es5 use @swc/core
 */
import { Plugin } from 'esbuild';
import { Options as SWCOptions } from '@swc/core';
export declare function transformFile(file: string, options?: SWCOptions): Promise<import("@swc/core").Output>;
export declare function es5Plugin(options?: {
    filter?: RegExp;
    swc?: SWCOptions;
}): Plugin;