AppTitle

Spicetify.AppTitle reads and overrides the default window title, which Spotify shows when no track is playing.

interface Subscription {
  cancel(): void;
}

namespace AppTitle {
  function set(title: string): Promise<Subscription>;
  function get(): Promise<string>;
  function reset(): Promise<void>;
  function sub(callback: (title: string) => void): Subscription;
}

• set overrides the default title and keeps reapplying it until you call reset or cancel on the subscription it returns. Each call replaces the previous override. A playing track still shows its own title.
• get returns the default title, not the title of the playing track.
• reset stops the override and restores Spotify’s default title.
• sub calls callback when the default title changes. Call cancel on the result to stop.

const override = await Spicetify.AppTitle.set('Focus mode');
override.cancel();
await Spicetify.AppTitle.reset();