JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://api-maps.yandex.ru/2.0-stable/?load=package.full&lang=ru-RU&onload=mapsloadtrigger" type="text/javascript"></script>

JavaScript

navigator.geolocation.getCurrentPosition(function(geopos) {
            ymaps.geocode([geopos.coords.latitude,geopos.coords.longitude]).then(function(res){
              var result = res.geoObjects.get(0);

        if(result) {
            alert(result.properties.get('name'));
        }
	})
});