Made of little things.

import { config } from '@napplet/sdk';
import settingsSchema from '../config.schema.json';

export interface Settings {
  sound?: unknown;
  screenShake?: unknown;
}

/** Optional host settings (sound, screen shake). Without the config domain the defaults stay on. */
export function startSettings(apply: (values: Settings) => void): void {
  void (async () => {
    // Some hosts consume the embedded schema; others need standard registration.
    if (!config.schema) {
      await config.registerSchema(settingsSchema as Parameters<typeof config.registerSchema>[0]);
    }
    const subscription = config.subscribe((values) => apply(values as Settings));
    window.addEventListener('pagehide', () => subscription.close(), { once: true });
  })().catch(() => {
    // Optional operations may be unavailable even when a host exposes the domain.
  });
}