while runnin: window is not defined

after installing the package and requiring it. while running this error is coming: ReferenceError: window is not defined at F:\E-Commerce\shopping-cart\node_modules\firebaseui\dist\npm.js:30:129 at Object.<anonymous> (F:\E-Commerce\shopping-cart\node_modules\firebaseui\dist\npm.js:357:338) at Module._compile (module.js:635:30) at Object.Module._extensions…js (module.js:646:10) at Module.load (module.js:554:32) at tryModuleLoad (module.js:497:12) at Function.Module._load (module.js:489:3) at Module.require (module.js:579:17) at require (internal/module.js:11:18) at Object.<anonymous> (F:\E-Commerce\shopping-cart\app.js:10:18) npm ERR! code ELIFECYCLE npm ERR! errno 1 npm ERR! shopping-cart@0.0.0 start: node ./bin/www npm ERR! Exit status 1 npm ERR! npm ERR! Failed at the shopping-cart@0.0.0 start script. npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in: npm ERR! C:\Users\ACER\AppData\Roaming\npm-cache_logs\2018-06-09T11_33_15_788Z-debug.log

[nicolasgarnier]

SSR in environments such as react or nextjs (and such) is not supported by firebaseUI which relies on using the DOM.

Try to avoid loading and runing FirebaseUI on the server. For instance by loading it in componentDidMount() in React.

[Engineersticity]

How can this be solved?