JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://cdn.jsdelivr.net/npm/vue"></script>
<script src="https://cdn.jsdelivr.net/npm/sweetalert2"></script>
<button id="click">
Show
</button>

JavaScript

Vue.component('my-component', {
	template: '<div>A custom component!</div>'
})

var vue;

var showModal = function () {
  swal({
    html: "<my-component></my-component>"
  })
  
  vue = new Vue({
		el: swal.getContent()
	})  
}

document.getElementById("click").addEventListener("click", showModal);