(function(){
    "use strict";

    window._stateSet = function () {
        window._stateSet = function() {
            console.log("Call _stateSet only once");
        };
        let appState = window._appState;

        let btn = document.getElementById('token');
        btn.addEventListener('click', function() {
            appState.onTokenReceived('token123');
        })
        
    }
}());