สำหรับโค้ดในฝั่ง Stimulus ก็จะประมาณนี้

import { Controller } from "stimulus"
export default class extends Controller {  
  static targets = ["nextPageLink"]
  connect() {    
    if (this.hasNextPageLinkTarget) {      
      this.observeNextPageLink() 
    }  
  }
  
  observeNextPageLink() {    
    let options = {      
      root: null,      
      rootMargin: "300px 0px 0px 0px",      
      threshold: 0,    
    }
    
    let observer = new IntersectionObserver(([ entry ], observer) => {      
      if (entry.isIntersecting) {
         this.nextPageLinkTarget.click()      
         observer.disconnect()     
      }      
    }, options)
    observer.observe(this.nextPageLinkTarget)
  }
}