refactor: Define TITLE global variable

ff2mpv.js

@@ -5,6 +5,7 @@ function onError(error) {
 }
 
 const OPEN_VIDEO = 'openVideo';
+let TITLE;
 
 function ff2mpv(url, options = []) {
   browser.tabs.executeScript({
@@ -44,8 +45,6 @@ async function submenuClicked(info) {
   }
 }
 
-let os = '';
-
 function changeToMultiEntries() {
   // Remove single entry
   browser.contextMenus.remove('ff2mpv');
@@ -60,7 +59,7 @@ function changeToMultiEntries() {
 
   browser.contextMenus.create({
     parentId: "ff2mpv",
-    title: os === "win" ? "Play in MP&V" : "Play in MPV (&W)",
+    title: TITLE,
     contexts,
     onclick: submenuClicked,
   });
@@ -73,7 +72,7 @@ function changeToSingleEntry() {
   // Add single entry
   browser.contextMenus.create({
     id: "ff2mpv",
-    title: os === "win" ? "Play in MP&V" : "Play in MPV (&W)",
+    title: TITLE,
     contexts,
     onclick: submenuClicked,
   });
@@ -112,8 +111,33 @@ function updateProfile(profile) {
   });
 }
 
-getOS().then(async (_os) => {
-  os = _os;
+browser.browserAction.onClicked.addListener((tab) => {
+  ff2mpv(tab.url);
+});
+
+// Messages sent with browser.runtime.sendMessage (https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/runtime/sendMessage) from external applications will be handle here.
+// ref: https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/runtime/onMessageExternal
+browser.runtime.onMessageExternal.addListener((request, sender, sendResponse) => {
+  if (!request) {
+    console.warn('No request in external message');
+    return;
+  }
+
+  const { type, url } = request;
+  console.debug('Request from:', sender);
+
+  switch (type) {
+    case OPEN_VIDEO:
+      ff2mpv(url);
+      return sendResponse('ok');
+    default:
+      console.warn('No handler for external type:', type);
+      return;
+  }
+});
+
+getOS().then(async (os) => {
+  TITLE = os === "win" ? "Play in MP&V" : "Play in MPV (&W)";
 
   const profiles = await getProfiles();
 
@@ -132,29 +156,4 @@ getOS().then(async (_os) => {
       })
     });
   }
-
-  browser.browserAction.onClicked.addListener((tab) => {
-    ff2mpv(tab.url);
-  });
-
-  // Messages sent with browser.runtime.sendMessage (https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/runtime/sendMessage) from external applications will be handle here.
-  // ref: https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/runtime/onMessageExternal
-  browser.runtime.onMessageExternal.addListener((request, sender, sendResponse) => {
-    if (!request) {
-      console.warn('No request in external message');
-      return;
-    }
-
-    const { type, url } = request;
-    console.debug('Request from:', sender);
-
-    switch (type) {
-      case OPEN_VIDEO:
-        ff2mpv(url);
-        return sendResponse('ok');
-      default:
-        console.warn('No handler for external type:', type);
-        return;
-    }
-  });
 });