const meta = new WeakMap();
const card = {};
meta.set(card, { clicks: 1 });
console.log(meta.get(card).clicks, meta.has({}));

const wm = new WeakMap();
const k = {};
wm.set(k, 1);
console.log(wm.get(k), wm.has(k), wm.delete(k), wm.has(k));

const handled = new WeakSet();
const order = {};
handled.add(order);
console.log(handled.has(order), handled.delete(order), handled.has(order));

const big = { data: new Array(1000).fill(0) };
const ref = new WeakRef(big);
console.log(ref.deref() === big);

const registry = new FinalizationRegistry((info) => console.log("Собран", info));
const token = {};
registry.register({}, "карточка", token);
console.log(registry.unregister(token));