I'm trying to playing around with React.
I followed the "Getting Started" tutorial of NextJs ([link](https://nextjs.org/learn/basics/getting-started)) and I have successfully created the new project.

As soon as I try to import third-party plugins like [current-devices](https://www.npmjs.com/package/current-device) or [smooth-scrollbar](https://www.npmjs.com/package/smooth-scrollbar) I get the following error:

```
ReferenceError: window is not defined
(anonymous function)
/c/xampp/htdocs/nextjs/node_modules/smooth-scrollbar/dist/smooth-scrollbar.js:1:262
Module._compile
module.js:652:30
Module._extensions..js
module.js:663:10
Module.load
module.js:565:32
tryModuleLoad
module.js:505:12
Function.Module._load
module.js:497:3
Module.require
module.js:596:17
require
internal/module.js:11:18
smooth-scrollbar
webpack:/external "smooth-scrollbar":1
> 1 | module.exports = require("smooth-scrollbar");
View compiled
__webpack_require__
./webpack/bootstrap:21
  18 | // Execute the module function
  19 | var threw = true;
  20 | try {
> 21 |  modules[moduleId].call(module.exports, module, module.exports, __webpack_require__);
     | ^  22 |  threw = false;
  23 | } finally {
  24 |  if(threw) delete installedModules[moduleId];
View compiled
Module../pages/index.js
/_next/development/server/static/development/pages/index.js:221:74
__webpack_require__
./webpack/bootstrap:21
  18 | // Execute the module function
  19 | var threw = true;
  20 | try {
> 21 |  modules[moduleId].call(module.exports, module, module.exports, __webpack_require__);
     | ^  22 |  threw = false;
  23 | } finally {
  24 |  if(threw) delete installedModules[moduleId];
View compiled
3
/_next/development/server/static/development/pages/index.js:383:18
__webpack_require__
./webpack/bootstrap:21
  18 | // Execute the module function
  19 | var threw = true;
  20 | try {
> 21 |  modules[moduleId].call(module.exports, module, module.exports, __webpack_require__);
     | ^  22 |  threw = false;
  23 | } finally {
  24 |  if(threw) delete installedModules[moduleId];
View compiled
▶ 2 stack frames were collapsed.

```

The import I made in the file C:\xampp\htdocs\nextjs\pages\index.js

is just:

```
import Scrollbar from 'smooth-scrollbar';
import device from 'current-device'

```

Thanks a lot for the help!