JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://unpkg.com/luri@2.4.11/src/luri.js"></script>

JavaScript

let element = luri.construct([
  "The time is: ",
  fetch("https://worldtimeapi.org/api/timezone/Europe/London")
  .then(response => response.json())
  .then(time => ({
    node: "strong",
    html: time.datetime
  })).catch(() => "Error fetching time")
])

document.body.appendChild(element);