elasticsearch api in angular 2 application

I am not sure , how to use elasticsearch API avaialble in below link in angular application.

 

https://www.elastic.co/guide/en/elasticsearch/reference/current/search.html

 

I have gone through the below sit for using elasticsearch services.But for other functionality like multi field search, conditional search, pagination with first and last pages, i didnt get any idea how to proceed.

 

http://javasampleapproach.com/frontend/angular/angular-4-elasticsearch-example-quick-start-how-to-add-elasticsearch-js#comment-3537

 

Please kindly share any links or guide me using elastic search in angular cli (angular 2) application.