Class Addon

The addon: its services are made by hand, in order, and handed to register; start then connects them to the game's events and runs their lifecycle hooks.

const addon = new Addon(addonName);
const settings = addon.register(new SettingsService(...));
addon.start();

Lifecycle, in order: onAddonLoaded at ADDON_LOADED of this addon (the saved data is there); at the first PLAYER_LOGIN or PLAYER_ENTERING_WORLD onFirstLogin once and then the regular work (@Interval) starts; onLogin at PLAYER_LOGIN only; onReady after PLAYER_LOGIN and after every PLAYER_ENTERING_WORLD; onLogout at PLAYER_LOGOUT, when the regular work stops. Hooks run in the order the services were registered, so a service is registered after the services it needs.