import process from 'node:process';
import { setImmediate } from 'node:timers/promises';

const kept = [];

function onFinalize(ref) {
  console.log(`finalized: ${ref.name}`);
}

function setup() {
  const first = { name: 'first' };
  let collected = { name: 'collected' };
  const third = { name: 'third' };

  kept.push(first, third);

  process.finalization.register(first, onFinalize);
  process.finalization.register(collected, onFinalize);
  process.finalization.register(third, onFinalize);

  collected = null;
}

setup();

// Give V8 a few chances to collect `collected` and run the
// FinalizationRegistry cleanup before process exit.
for (let i = 0; i < 10; i++) {
  gc();
  await setImmediate();
}

console.log('expected: finalized: first');
console.log('expected: finalized: third');