LocalStorage
Spicetify.LocalStorage calls window.localStorage with the key you pass, so values are shared across Spotify accounts. For values stored per account, use Platform.LocalStorageAPI. In a module, use client.storage, or stdlib’s storage helpers.
namespace LocalStorage { function get(key: string): string | null; function set(key: string, value: string): void; function remove(key: string): void; function clear(): void;}get returns null for a missing key. set stores the value as a string.
Spicetify.LocalStorage.set('my-module:theme', 'dark');Spicetify.LocalStorage.get('my-module:theme'); // "dark"Spicetify.LocalStorage.remove('my-module:theme');