Cannot import js package installed with importmap in symfony 6

i've installed swiper js with importmap:require swiper in symfony. it download a umd version of the package in the vendor/

Note: i use it in a stimulus controller

We cannot import Swiper from "swiper" because importmap install the umd version.

I've tried using it with const Swiper = window.Swiper; but it is undefined

import { Controller } from "@hotwired/stimulus";
import "swiper";

export default class extends Controller {
    connect() {
        const Swiper = window.Swiper;
        this.swiper = new Swiper('.swiper', {
            pagination: {
                el: '.swiper-pagination',
            },
            navigation: {
                nextEl: '.swiper-button-next',
                prevEl: '.swiper-button-prev',
            }
        });
    }
}