// ❌ Creating new objects every frame (gaming/animations)
function createParticles(count) {
  const particles = [];
  for (let i = 0; i < count; i++) {
    particles.push({ x: 0, y: 0, vx: 0, vy: 0, life: 1 });
  }
  return particles;
}

// ✅ Object pool pattern
class ObjectPool {
  constructor(factory, reset) {
    this.pool = [];
    this.factory = factory;
    this.reset = reset;
  }

  acquire() {
    return this.pool.pop() || this.factory();
  }

  release(obj) {
    this.reset(obj);
    this.pool.push(obj);
  }

  get size() {
    return this.pool.length;
  }
}

// Usage
const particlePool = new ObjectPool(
  () => ({ x: 0, y: 0, vx: 0, vy: 0, life: 1 }),
  (p) => { p.x = 0; p.y = 0; p.vx = 0; p.vy = 0; p.life = 1; }
);

const p = particlePool.acquire();
p.x = 100;
p.y = 200;
// ... use particle ...
particlePool.release(p); // Return to pool

const arrayPool = [];

function getArray() {
  return arrayPool.pop() || [];
}

function releaseArray(arr) {
  arr.length = 0; // Clear elements
  arrayPool.push(arr);
}

// Usage — reuse arrays instead of creating new ones
const temp = getArray();
for (const item of data) {
  temp.push(process(item));
}
// Use temp...
releaseArray(temp);