DatePicker for Laravel 5.8

I am looking for a recommendation on your datepicker for Laravel 5.8. Currently I am using a pure css datepicker which is ugly. I am having a hard time integrating datepickers for my project because it always indicate

datepicker is not defined

I tried installing this via NPM

https://www.npmjs.com/package/js-datepicker

and implemented this in my js file but I still get the undefined error:

    datepicker(document.querySelector('#date_search'));

via Chebli Mohamed