tracekit: onerror url patch for Firefox

Author: kamilogorek

packages/browser/src/tracekit/index.js

@@ -230,6 +230,7 @@ TraceKit.report = (function reportModuleWrapper() {
    * @memberof TraceKit.report
    */
   function traceKitWindowOnError(message, url, lineNo, columnNo, errorObj) {
+    debugger;
     var stack = null;
     // If 'errorObj' is ErrorEvent, get real Error from inside
     errorObj = isErrorEvent(errorObj) ? errorObj.error : errorObj;
@@ -265,7 +266,15 @@ TraceKit.report = (function reportModuleWrapper() {
         name: name,
         message: msg,
         mode: 'onerror',
-        stack: [location],
+        stack: [
+          {
+            ...location,
+            // Firefox sometimes doesn't return url correctly and this is an old behavior
+            // that I prefer to port here as well.
+            // It can be altered only here, as previously it's using `location.url` for other things — Kamil
+            url: location.url || getLocationHref(),
+          },
+        ],
       };
 
       notifyHandlers(stack, true, null);