如何做到在webpack打包vue项目后，在外部动态修改配置文件

npm install generate-asset-webpack-plugin --save-dev

const GenerateAssetPlugin = require(‘generate-asset-webpack-plugin‘);
const config = require(‘../config/app-config‘);

function createServerConfig(compilation){
    return JSON.stringify(
        Object.assign({
            _hash: compilation.hash
        },config)
    )
}

module.exports = () =>{
    return new GenerateAssetPlugin({
        filename: ‘config/app-config.json‘,
        fn: (compilation, cb) => {
            cb(null, createServerConfig(compilation));
        }
    })
}

module.exports={
    env:"dev",
    baseUrl:"http://www.baidu.com"
}

let webpackConfig = {
  context: path.resolve(__dirname, ‘../‘),
  entry: {
    app: ‘./src/main.js‘
  },
    plugins:[
        generateAssetAppConfig(packageConfig)
    ],
  output: {
    path: config.build.assetsRoot,
    filename: ‘[name].js‘,
    publicPath: process.env.NODE_ENV === ‘production‘
      ? config.build.assetsPublicPath
      : config.dev.assetsPublicPath
  },
  resolve: {
    extensions: [‘.js‘, ‘.vue‘, ‘.json‘],
    alias: {
      ‘vue$‘: ‘vue/dist/vue.esm.js‘,
      ‘@‘: resolve(‘src‘),
    }
  },

let get= function(url){
    return new Promise((resolve,reject)=>{
        let xhr= new XMLHttpRequest();
        xhr.open(‘get‘,url,true);
        xhr.onload=function(){
            if(xhr.status==200){
                resolve(JSON.parse(xhr.responseText));
            }else{
                reject(null);
            }
        }
        xhr.onerror = function(){
            reject(null);
        }
        xhr.send(null);
    });
}

export default{
    getConfig(){
        return get(‘/config/app-config.json‘);
    }
}

outConfig.getConfig()
    .then(res=>{
    Object.assign(config,res)
}).catch(err=>{})