I have a script that should get a value from the backgroud, basically it returns an item, but also for some reason it returns true when the function is called again.

market.js

async function renderMarketItem(item) {
//parsers name, type and quality of item
let market_item = await new Promise((resolve, reject) => {
          if(chrome.runtime?.id) {
            chrome.runtime.sendMessage({ action: "getMarketItem", name: formatData(type, name, quality) }, (item) => {
              resolve(item);
            })
          }
          else resolve(undefined);
        });
//another logic
}


chrome.runtime.onMessage.addListener((message, sender, sendResponse) => {
      if (message.action == 'updateConfig') {
        $('.items-grid').children().each(function() {
          renderMarketItem($(this));
        })
      }
});


/*for example*/
$('.items-grid').children().each(function() {
          renderMarketItem($(this));
})

background.js

chrome.runtime.onMessage.addListener((message, sender, sendResponse) => {
   if (message.action == 'getMarketItem') {
        sendResponse(getMarketItem(message));
    }
});

const getMarketItem = (message) => {
    
    let targetName = message.name;
    let item = [];
    if (targetName) item = items.find(item => item.market_hash_name.trim() == targetName.trim());
    return item;
}

I did function async with return true and it didn’t work