webpack-bootstrap-ui-kit/src/js/main/loading-spinner.js

// browser tab visibility state detection

import Events from "../_events";

const NAME = "_main.loading-spinner";
const D = document;
const BODY = D.body;
const SPINNER = D.getElementById("PageLoading");

class SpinnerUI {
  static show() {
    console.log(`${NAME}: show`);
    SPINNER.classList.remove("d-none");
  }
  static hide() {
    console.log(`${NAME}: hide`);
    SPINNER.classList.add("d-none");
  }
}

export default SpinnerUI;