code cosmetics: add invokeOrPostpone()

.eslintrc

@@ -38,6 +38,7 @@ globals:
   sessionStorageHash: false
   download: false
   doTimeout: false
+  invokeOrPostpone: false
   # localization.js
   template: false
   t: false

backup/fileSaveLoad.js

@@ -287,10 +287,9 @@ function importFromString(jsonString) {
             const message = {method: 'styleReplaceAll', styles};
             if (tab.id == ownTab.id) {
               applyOnMessage(message);
-            } else if (tab.id == activeTab.id) {
-              chrome.tabs.sendMessage(tab.id, message, ignoreChromeError);
             } else {
-              setTimeout(chrome.tabs.sendMessage, 0, tab.id, message, ignoreChromeError);
+              invokeOrPostpone(tab.id == activeTab.id,
+                chrome.tabs.sendMessage, tab.id, message, ignoreChromeError);
             }
             setTimeout(BG.updateIcon, 0, tab, styles);
             if (tab == lastTab) {

messaging.js

@@ -81,11 +81,7 @@ function notifyAllTabs(msg) {
     ]).then(([tabs, activeTab]) => {
       const activeTabId = activeTab && activeTab.id;
       for (const tab of tabs) {
-        if (tab.id === activeTabId) {
-          notifyTab(tab);
-        } else {
-          setTimeout(notifyTab, 0, tab);
-        }
+        invokeOrPostpone(tab.id === activeTabId, notifyTab, tab);
       }
     });
   }
@@ -366,3 +362,10 @@ function doTimeout(ms = 0, ...args) {
     ? () => new Promise(resolve => setTimeout(resolve, ms, ...args))
     : new Promise(resolve => setTimeout(resolve, 0, ...args));
 }
+
+
+function invokeOrPostpone(isInvoke, fn, ...args) {
+  return isInvoke
+    ? fn(...args)
+    : setTimeout(invokeOrPostpone, 0, true, fn, ...args);
+}

popup.js

@@ -246,11 +246,7 @@ function createStyleElement({
   $('.disable', entry).onclick = handleEvent.toggle;
   $('.delete', entry).onclick = handleEvent.delete;
 
-  if (postponeDetect) {
-    setTimeout(detectSloppyRegexps, 0, {entry, style});
-  } else {
-    detectSloppyRegexps({entry, style});
-  }
+  invokeOrPostpone(!postponeDetect, detectSloppyRegexps, {entry, style});
 
   const oldElement = $('#style-' + style.id);
   if (oldElement) {