import var firebaseui = require（'firebaseui'）;错误窗口未定义
在我的项目中导入firebaseui时未定义错误窗口
var firebaseui = require（'firebaseui'）;
\ node_modules \ firebaseui \ dist \ npm.js：30componentHandler [“ register”] = componentHandler.register; componentHandler [“ downgradeElements”] = componentHandler.downgradeElements; windowponentHandler = componentHandler; window [“ componentHandler”] = componentHandler;
回答如下：firebaseui为在浏览器中运行的Web应用程序提供UI组件。它不支持node.js。