add types for routerAjaxStart

Author: nolimits4web

src/core/modules/router/router-class.js

@@ -539,13 +539,14 @@ class Router extends Framework7Class {
         }
       }
       router.xhrAbortController = new AbortController();
-      const options = {
+      const fetchOptions = {
         method: 'GET',
         signal: router.xhrAbortController.signal,
       };
-      router.emit('routerAjaxStart', options);
+      router.emit('routerAjaxStart', options, fetchOptions);
       let fetchRes;
-      fetch(url, options).then(res => {
+      fetch(url, fetchOptions)
+        .then((res) => {
           fetchRes = res;
           return res.text();
         })

src/core/modules/router/router.d.ts

@@ -247,6 +247,8 @@ export namespace Router {
     /** Event will be fired when router.updateCurrentUrl method called */
     routeUrlUpdate(newRoute: Route, router: Router): void;
 
+    /** Event will be fired when the request starts. As an arguments receives navigating options object and request init object */
+    routerAjaxStart(options: RouteOptions, requestInit: RequestInit): void;
     /** Event will be fired when the request succeeds. As an arguments receives XHR object and navigating options object */
     routerAjaxSuccess(response: Response, options: RouteOptions): void;
     /** Event will be fired if the request fails. As an arguments receives XHR object and navigating options object */