@drieam/common/es/utils/dom/index.js

Default Drieam api wrapper

import { broadcastMessage, postLtiFrameResize } from "./broadcaster";
import { render, getAttributes } from "./render";
import { iframeResizeObserver, observeIframeResize } from "./resizeObserver";

if (Element.prototype.getAttributeNames === undefined) {
  Element.prototype.getAttributeNames = function getAttributeNames() {
    var attributes = this.attributes;
    var length = attributes.length; // tslint:disable-next-line

    var result = new Array(length);

    for (var i = 0; i < length; i += 1) {
      result[i] = attributes[i].name;
    }

    return result;
  };
}

function getCSRFToken() {
  var meta = document.head.querySelector("meta[name=csrf-token]");
  return meta ? meta.getAttribute("content") : "";
}

function getLocale() {
  return document.documentElement.getAttribute("lang") || "en";
}

function getTimeZone() {
  return document.body.dataset.timeZone || "Europe/Amsterdam";
}

var dom = {
  iframeResizeObserver: iframeResizeObserver,
  observeIframeResize: observeIframeResize,
  broadcastMessage: broadcastMessage,
  postLtiFrameResize: postLtiFrameResize,
  render: render,
  getAttributes: getAttributes,
  getCSRFToken: getCSRFToken,
  getLocale: getLocale,
  getTimeZone: getTimeZone
};
export { dom };