vue项目打包后怎样优雅的解决跨域

proxyTable: {
   '/api': {
    target: 'http://113.113.113.113:5000', //假的接口地址哈
    changeOrigin: true,
    pathRewrite: {
     '^/api': ''
    }
   },

server {
    listen    8082;
    server_name 127.0.0.1; //咱自己nginx服务器地址

    #charset koi8-r;

    #aess_log logs/host.aess.log main;

    location / {
      root  html;
      index index.html index.htm;
    }
  location /app-api {
      rewrite ^.+app-api/?(.)$ /$1 break;
      include uwsgi_params;
      proxy_pass  http://113.113.113.113:5001/; //后端接口地址
      //关键部分start
      add_header Aess-Control-Allow-Origin ;
      add_header Aess-Control-Allow-Methods 'GET, POST, OPTIONS';
      add_header Aess-Control-Allow-Headers 'DNT,X-Mx-ReqToken,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Authorization,token';
      //关键部分end
      //以下配置参见nginx配置文档哈
      #Proxy Settings
      proxy_redirect   off;
      proxy_set_header  Host       $host;
      proxy_set_header  X-Real-IP    $remote_addr;
      proxy_set_header  X-Forwarded-For $proxy_add_x_forwarded_for;
      proxy_set_header  Connection    close;
      proxy_next_upstream error timeout invalid_header http_500 http_502 http_503 http_504;
      proxy_max_temp_file_size 0;
      proxy_connect_timeout   90;
      proxy_send_timeout     90;
      proxy_read_timeout     90;
      proxy_buffer_size     4k;
      proxy_buffers       4 32k;
      proxy_busy_buffers_size  64k;
      proxy_temp_file_write_size 64k;
    }
}

var BASE_URL = '/api';
var isPro = process.env.NODE_ENV === 'production'
if(isPro){
 BASE_URL= 'http://113.113.113.113:5000', //线上或者测试地址
 //BASE_URL= 'http://127.0.0.1:8020', //nginx代理地址
 //当我们需要打包后依然能正常调接口的时候用这个  
}
const UrlConfig = {
 getToken:BASE_URL + "某接口"
}
export default {
 UrlConfig
};