best way to check if an item is used in node-tf2

[mjavad_mllw]

Hi,
i wrote a script to use backpack expander to not run game anymore

this script is simple
1. log in to steam 
2. run the tf2
3. get backpack data and slots amount
4. find the backpack expander
5. use backpack
6. check for more backpack and do process 5 again

my main question is that how can i check if i used item cuase the "useItem" method dont throw any thing and i tried that 
and also i have found two events "itemRemoved" and "accountUpdate"

which one should i check ?

i know i should try it my self but it take time and also cost me some backpacks to find out the answer

here is my code that i wrote about useItem method:

 

function checkForExpanders() {
  if (!tf2.backpack || tf2.backpack.length === 0) {
    console.log("⏳ Backpack not loaded yet...");
    setTimeout(() => checkForExpanders(), 5000);
    return;
  }

  const expanders = tf2.backpack.filter((item) => {
    const defindex = item.def_index || item.defIndex || item.defindex;
    const schemaItem = tf2.itemSchema?.itemsByDefindex?.[defindex];
    const name = schemaItem?.item_name?.toLowerCase() || "";
    return defindex === 5050 || name.includes("backpack expander");
  });

  if (expanders.length === 0) {
    console.log("❌ No Backpack Expander found in your inventory.");
    askToCheckAgain();
    return;
  }

  console.log(`🧳 Found ${expanders.length} Backpack Expander(s).`);
  const expander = expanders[0];

  rl.question(
    "❓ Do you want to use a Backpack Expander? (y/n): ",
    (answer) => {
      if (answer.toLowerCase() === "y") {
        console.log(`🔧 Trying to use Backpack Expander... (item_id: ${expander.id})`);
        tf2.useItem(expander.id, (err) => {
          if (err) {
            console.error("❌ Failed to use item:", err);
          } else {
            console.log("✅ Used Backpack Expander successfully.");
          }

          setTimeout(() => {
            console.log("🔄 Refreshing backpack info...");
            showBackpackInfo();
            setTimeout(() => checkForExpanders(), 5000);
          }, 5000);
        });
      } else {
        console.log("❎ Operation cancelled by user.");
        askToCheckAgain();
      }
    }
  );
}

 

Edited 6 hours ago by mjavad_mllw