Non so perche', devo mandarlo dalla webapp

webapp/public/js/authentication/Secured.js

 'use strict';
 
-// import Keycloak from 'keycloak-js';
-const Keycloak = require('keycloak-js');
+// import Keycloak from './keycloak-js';
 
 
 class Secured {
     constructor() {
         this.keycloak = null;
         this.authenticated = false;
-        this.initKeycloak();
-    }
-
-    initKeycloak() {
-        const keycloak = new Keycloak('./keycloak.json');
-        keycloak.init({
-            onLoad: 'login-required'  // login-required will authenticate the client if the user is logged-in to Keycloak or display the login page if not.
-        }).then(authenticated => {
-            this.keycloak = keycloak;
-            this.authenticated = authenticated;
-        });
+        const body = document.getElementById('body-id');
+        body.onload = function() {
+            const keycloak = new Keycloak('http://localhost:3000/keycloak.json');
+            keycloak.init({
+                onLoad: 'login-required'  // login-required will authenticate the client if the user is logged-in to Keycloak or display the login page if not.
+            }).then(function(authenticated) {
+                this.keycloak = keycloak;
+                this.authenticated = authenticated;
+            });
+        }
     }
 
     async getUserInfo() {
@@ -35,4 +33,4 @@ class Secured {
     }
 }
 
-export default Secured;
\ No newline at end of file
+export default Secured;