Disable updater for newer app versions

main.ts

@@ -26,7 +26,7 @@ import { enableHoverPreview } from './src/features/image';
 import { startObserving } from './src/scroll';
 import { checkForUpdates, checkForUpdatesThrottled, downloadLatestBuild, fetchLatestRelease, renderUpdatePill } from './src/support/updater';
 import { imageHoverPreview, keyboardShortcut, updateBehavior } from './src/support/settings';
-import { hasFullHost } from './src/support/host';
+import { hasFullHost, hasExtensionManager } from './src/support/host';
 import { copyToSharedContainer, setUpQuickLook } from './src/quicklook';
 import { localized } from './src/shared/strings';
 import { macOSTahoe, hasFilePathInfo } from './src/shared/utils';
@@ -109,7 +109,7 @@ if (hasFullHost()) {
         title: `${localized('checkReleases')} (GitHub)`,
         action: () => open('https://github.com/MarkEdit-app/MarkEdit-preview/releases/latest'),
       },
-      ...(hasFilePathInfo() ? [{
+      ...(hasFilePathInfo() && !hasExtensionManager() ? [{
         title: localized('updateAndRelaunch'),
         action: async () => {
           const release = await fetchLatestRelease();

src/support/host.ts

@@ -6,3 +6,17 @@ import { MarkEdit } from 'markedit-api';
 export function hasFullHost(): boolean {
   return typeof MarkEdit.addExtension === 'function';
 }
+
+/**
+ * Whether the host ships its own extension manager (MarkEdit 1.34.0+),
+ * which makes this extension's self-update mechanism redundant.
+ */
+export function hasExtensionManager(): boolean {
+  if (typeof MarkEdit.runtimeInfo !== 'function') {
+    return false;
+  }
+
+  // appVersion is always 3 numeric segments, so numeric collation is a safe comparison
+  const appVersion = MarkEdit.runtimeInfo().appVersion;
+  return appVersion.localeCompare('1.34.0', undefined, { numeric: true }) >= 0;
+}

src/support/settings.ts

@@ -1,4 +1,5 @@
 import { MarkEdit } from 'markedit-api';
+import { hasExtensionManager } from './host';
 import type { JSONObject, JSONValue } from 'markedit-api';
 import type { PresetName } from 'markdown-it';
 import type { ColorScheme } from '../shared/types';
@@ -19,6 +20,10 @@ const updateBehaviors = ['automatic', 'quiet', 'notify', 'never'] as const;
 export type UpdateBehavior = (typeof updateBehaviors)[number];
 
 export const updateBehavior: UpdateBehavior = (() => {
+  if (hasExtensionManager()) {
+    return 'never';
+  }
+
   const behavior = rootValue.updateBehavior as string | undefined;
   if (behavior && (updateBehaviors as readonly string[]).includes(behavior)) {
     return behavior as UpdateBehavior;