@aplus-frontend/utils/es/event/index.js

Utils for Aplus frontend team.

import ResizeObserver from "resize-observer-polyfill";
const isServer = typeof window === "undefined";
function resizeHandler(entries) {
  for (const entry of entries) {
    const listeners = entry.target.__resizeListeners__ || [];
    if (listeners.length) {
      listeners.forEach((fn) => {
        fn();
      });
    }
  }
}
function addResizeListener(element, fn) {
  if (isServer) return;
  if (!element.__resizeListeners__) {
    element.__resizeListeners__ = [];
    element.__ro__ = new ResizeObserver(resizeHandler);
    element.__ro__.observe(element);
  }
  element.__resizeListeners__.push(fn);
}
function removeResizeListener(element, fn) {
  if (!element || !element.__resizeListeners__) return;
  element.__resizeListeners__.splice(
    element.__resizeListeners__.indexOf(fn),
    1
  );
  if (!element.__resizeListeners__.length) {
    element.__ro__.disconnect();
  }
}
function triggerWindowResize() {
  const event = document.createEvent("HTMLEvents");
  event.initEvent("resize", true, true);
  event.eventType = "message";
  window.dispatchEvent(event);
}
export {
  addResizeListener,
  removeResizeListener,
  triggerWindowResize
};