const r = new FinalizationRegistry((tag) => console.log(tag));

function alloc() {
  let counter = 0;
  (function allocateMemory() {
    Array.from({ length: 50000 }, () => () => {});
    if (counter > 5000) return;
    counter++;
    setTimeout(allocateMemory);
  })();
}

function test1() {
  let x = ['foo', 'bar']
  r.register(x, 'test1')
  x.length
}

async function test2() {
  const ac = new AbortController()
  r.register(ac, 'test2')
  await fetch('https://nodejs.org', {
    signal: ac.signal,
  })
}

test1() // test1
test2() // no output
alloc()