class Registry {
  static #cache = new Map();
  static #instanceCount = 0;
  static defaultTTL;

  static {
    Registry.#cache.set("base", { value: 42, active: true });
    Registry.#instanceCount = 1;
    Registry.defaultTTL = 3600;
    console.log("Static block 1:", Registry.#instanceCount, Registry.defaultTTL);
  }

  static {
    const base = Registry.#cache.get("base");
    Registry.#cache.set("derived", { value: base.value * 2, active: false });
    Registry.#instanceCount++;
    console.log("Static block 2:", Registry.#instanceCount, Registry.#cache.size);
  }

  static getSnapshot() {
    return [...Registry.#cache.entries()]
      .map(([k, v]) => `${k}:${v.value}`)
      .join(", ");
  }
}

console.log("Snapshot:", Registry.getSnapshot());
console.log("TTL:", Registry.defaultTTL);