Only open the extension page when the version gets updated.

Firefox "reinstalls" extensions when it gets updated so we
have to work around it so we only open the extension when
the version actually changes.

source/background.ts

@@ -1,10 +1,32 @@
 import {browser} from 'webextension-polyfill-ts';
+import {
+  defaultSettings,
+  getManifest,
+  getSettings,
+  setSettings,
+  versionAsNumber
+} from '.';
 
 // Add listeners to open the options page when:
 // * The extension icon is clicked.
 // * The extension is installed.
 browser.browserAction.onClicked.addListener(openOptionsPage);
-browser.runtime.onInstalled.addListener(openOptionsPage);
+browser.runtime.onInstalled.addListener(async () => {
+  const manifest = getManifest();
+  const settings = await getSettings();
+  const versionGotUpdated =
+    versionAsNumber(manifest.version) >
+    versionAsNumber(settings.data.version ?? defaultSettings.data.version!);
+
+  if (versionGotUpdated) {
+    settings.data.version = manifest.version;
+    await setSettings(settings);
+  }
+
+  if (versionGotUpdated || manifest.nodeEnv === 'development') {
+    await openOptionsPage();
+  }
+});
 
 async function openOptionsPage() {
   await browser.runtime.openOptionsPage();

source/manifest.json

@@ -3,7 +3,7 @@
   "manifest_version": 2,
   "name": "Tildes ReExtended",
   "description": "An updated and reimagined recreation of Tildes Extended to enhance and improve the experience of Tildes.net.",
-  "version": "1.0.1",
+  "version": "1.0.2",
   "permissions": [
     "downloads",
     "storage",

source/settings/defaults.ts

@@ -56,7 +56,8 @@ export const defaultSettings: Settings = {
       '~tv'
     ],
     latestActiveFeatureTab: 'debug',
-    userLabels: []
+    userLabels: [],
+    version: '0.0.0'
   },
   features: {
     autocomplete: true,

source/settings/index.ts

@@ -51,10 +51,12 @@ export async function getSettings(): Promise<Settings> {
     features: {...defaultSettings.features, ...syncSettings.features}
   };
 
-  window.TildesReExtended.debug = settings.features.debug;
-  // If we're in development, force debug output.
-  if (getManifest().nodeEnv === 'development') {
-    window.TildesReExtended.debug = true;
+  if (window?.TildesReExtended !== undefined) {
+    window.TildesReExtended.debug = settings.features.debug;
+    // If we're in development, force debug output.
+    if (getManifest().nodeEnv === 'development') {
+      window.TildesReExtended.debug = true;
+    }
   }
 
   return settings;

source/utilities/index.ts

@@ -48,3 +48,4 @@ export * from './groups';
 export * from './query-selectors';
 export * from './report-a-bug';
 export * from './validators';
+export * from './version';

source/utilities/version.ts

@@ -0,0 +1,7 @@
+/**
+ * Returns a version string as a number by removing the periods.
+ * @param version
+ */
+export function versionAsNumber(version: string): number {
+  return Number(version.replace(/\./g, ''));
+}