add timeout for messaging

src/background/messaging.ts

@@ -21,12 +21,14 @@ export type ResponseChecker<T> = ResponseCheckerSync<T> | ResponseCheckerAsync<T
  */
 export function sendMessage<T>(
     tab: chrome.tabs.Tab,
-    req,
+    req: Request,
     log?: string,
     dataChecker?: ResponseChecker<T>,
+    timeout?: number,
     interval?: number,
     limit?: number
 ) {
+    timeout = timeout || 10;
     interval = interval || 500;
     limit = isNaN(limit) ? 0 : limit;
     let count = 0;
@@ -47,7 +49,9 @@ export function sendMessage<T>(
                 return;
             }
             count++;
+            let timeout = setTimeout(() => { reject(`${Actions[req.action]} requset timeout after ${timeout}s`) }, 10000);
             chrome.tabs.sendMessage(tab.id, req, async (r: Response<T>) => {
+                clearTimeout(timeout);
                 // check error but do nothing until dataChecker.
                 let err = chrome.runtime.lastError;
                 let [result, error] = await checkResponse(dataChecker, r, err, count);