Turbolinks 5 - tearing down 3rd party widget (async) - google-tag-manager

Question

I am using FreshChat widget and I'm losing it when performing cached visit. The thing is that the destroy() function of the widget is async, so while I execute it on any event such as 'click' or 'before-visit', the widget is still persisted when the caching operation executes. So what I get is a cached page with an initialised widget, this breaks the widget and I can't re-initiate it.
If I manually destroy it in console(before every visit), then everything is fine.
The question is - how can I make sure that once I make a visit, the widget is destroyed BEFORE the current page is cached?
Notes:
The widget is executed from google tag manager, using dataLayer custom event
'before-cache' event would not help since again, it's an async operation.

Answer 1

I checked if the widget is still initialized, then I would destroy it using the below flush_freshchat method and reload the script to initialize window.fcWidget again
function initFreshChat() {
window.fcWidget.init({
token: "<%= Settings::FRESHCHAT_TOKEN %>",
host: "<%= Settings::FRESHCHAT_HOST %>"
});
function flush_freshchat(){
delete window.fcWidget;
delete window.history.pushState_fc_observer;
delete window.history.replaceState_fc_observer;
delete window.history.pushState;
delete window.history.replaceState;
}
(function(d, id) {
var fcJS;
freshchat_sdk = d.getElementById(id);
if (freshchat_sdk) {
freshchat_sdk.remove();
if(window.fcWidget.isInitialized()){
flush_freshchat();
}
}
fcJS = d.createElement('script');
fcJS.id = id;
fcJS.async = true;
fcJS.src = 'https://wchat.freshchat.com/js/widget.js';
fcJS.onload = initFreshChat;
d.head.appendChild(fcJS);
}(document, 'freshchat-js-sdk'));

Answer 2

Found a solution!
function beforeVisit( event ) {
if (!window.turbolinksVisitFlag) {
event.preventDefault();
if (window.fcWidget ) {
window.fcWidget.destroy();
}
window.turbolinksVisitFlag = true;
setTimeout(function(){Turbolinks.visit(event.data.url);}, 500);
}
So now I intercept every visit, do my stuff, and manually initiate next visit with a timeout.