Made of little things.

import { config } from '@napplet/sdk';
import { runtimeHasDomain } from './domain-availability.js';
import settingsSchema from '../config.schema.json';

// Seconds until the train leaves. Read at the start of each run.
export const settings = { timeLimit: 60 };

if (runtimeHasDomain('config')) {
  void (async () => {
    if (!config.schema) {
      await config.registerSchema(settingsSchema as Parameters<typeof config.registerSchema>[0]);
    }
    const subscription = config.subscribe((values) => {
      const limit = values.timeLimit;
      if (typeof limit === 'number' && limit >= 45 && limit <= 90) settings.timeLimit = limit;
    });
    window.addEventListener('pagehide', () => subscription.close(), { once: true });
  })().catch(() => {
    // Config is optional; keep the default time limit.
  });
}