Node.js Webpack：Bundle.js 未捕获的 ReferenceError：未定义进程

这是我的webpack.config.js美元

"use strict";

module.exports = {
    entry: ['./main.js'],
    output: { path: __dirname, filename: 'bundle.js' },
    module: {
        loaders: [
            {
                test: /.js?$/,
                loader: 'babel-loader',
                exclude: /node_modules/,
                query: {
                    presets: ['es2015', 'react']
                }
            },
            {test: /\.json$/, loader: "json"},
        ]
    },
    externals: {
        React: 'react',
    },
    target: "node",
};

还有Main.js

import React from 'react';
import ReactDOM from 'react-dom';
import {Table, Column, Cell} from 'fixed-data-table';
import Chart from 'chartjs';
import jQuery from 'jquery';
import vis from 'vis';
import babel from 'babel-core';

Bundle.js被插入到我的索引中.html.然后浏览器会给出错误信息:

Uncaught ReferenceError: process is not defined
    at Object.measureMethods (bundle.js:1297)
    at Object.<anonymous> (bundle.js:530)
    at __webpack_require__ (bundle.js:20)
    at Object.<anonymous> (bundle.js:288)
    at __webpack_require__ (bundle.js:20)
    at Object.<anonymous> (bundle.js:158)
    at __webpack_require__ (bundle.js:20)
    at Object.<anonymous> (bundle.js:110)
    at __webpack_require__ (bundle.js:20)
    at Object.<anonymous> (bundle.js:90)

我应该在网页中更改什么.配置.让这个错误消失？