let config = {
        src: "src/index.js",
        jquery: "https://cdn.bootcss.com/jquery/2.0.0/jquery.js",
        vue: "https://cdn.bootcss.com/vue/2.6.10/vue.common.dev.js",
        react: "https://cdn.bootcss.com/react/16.9.0/cjs/react.development.js",
        bootstrap:
          "https://cdn.bootcss.com/twitter-bootstrap/4.3.1/js/bootstrap.js",
      };