Is it possible to call Typescript Method in HTML Javascript?

I have a Webprojekt with FireBaseCloudMessaging running. Now i have to call a Method in a Typescript File to reload the Messages on Notification. Is this Possible?

HTML Part (index.html)

<script src="https://www.gstatic.com/firebasejs/4.3.0/firebase.js"></script>
<script>
    messaging.onMessage(function(payload) {
        console.log("Message received. ", payload);
        // ChatDialog.reloadMessages(); <-- Here i have to call the Typescript Method
    });
</script>

ChatDialog.ts

//This is the Method i have to call!
    reloadMessages(){
        this.messages.removeAll();
        localStorage.clear();
        ChatFunctions.getMessages(this, this.partner_id);
    }