1 files changed, 4 insertions, 4 deletions
diff --git a/src/bg/deferWebTraffic.js b/src/bg/deferWebTraffic.js
index 6efef97..fced870 100644
--- a/src/bg/deferWebTraffic.js
+++ b/src/bg/deferWebTraffic.js
@@ -2,7 +2,7 @@ function deferWebTraffic(promiseToWaitFor, next) {
   debug("deferWebTraffic on %o", promiseToWaitFor);
   let seenTabs = new Set();
   function checkNavigation(nav) {
-    if (nav.url.startsWith("http")) {
+    if (nav.tabId !== browser.tabs.TAB_ID_NONE && nav.url.startsWith("http")) {
       let seen = seenTabs.has(nav.tabId);
       debug(`%s navigation %o`, seen ? "seen" : "unseen", nav);
       if (!seen) {
@@ -14,7 +14,6 @@ function deferWebTraffic(promiseToWaitFor, next) {
   function reloadTab(tabId) {
     seenTabs.add(tabId);
     try {
-      // browser.tabs.update(tabId, {url: documentUrl});
       browser.tabs.executeScript(tabId, {
         runAt: "document_start",
         code: "window.location.reload(false)"
@@ -27,6 +26,7 @@ function deferWebTraffic(promiseToWaitFor, next) {
   
    async function waitFor(request) {
     let {type, documentUrl, url, tabId, frameId} = request;
+    if (tabId === browser.tabs.TAB_ID_NONE) return;
     if (!seenTabs.has(tabId)) {
       if (type === "main_frame") {
         seenTabs.add(tabId);
@@ -47,9 +47,9 @@ function deferWebTraffic(promiseToWaitFor, next) {
   }
   
   function spyTabs(request) {
-    debug("Spying request %o", request);
-    
+    debug("Spying request %o", request);  
   }
+
   browser.webRequest.onHeadersReceived.addListener(spyTabs, {
     urls: ["<all_urls>"],
     types: ["main_frame"],