Removes duplicate alert logs from the alert logs list in TradingView

remove-duplicate-alert-logs-trading-view.js

// find all the alert logs 'div' elements that contain the text. e.g. 'BTCUSDTPERP, 15 Crossing Horizontal Line'
const listSelector = ".widgetbar-widget-alerts_log > div:nth-child(2) .message-_BiOF1cO";

// get all the alert logs 'div' elements as an array of objects. sort them by 'pair' name.
// e.g.
// { i: 0, textContent: "BTCUSDTPERP, 15 Crossing Horizontal Line", pair: "BTCUSDTPERP" }
var arr = Array.from(document.querySelectorAll(listSelector))
  .map((a, i) => ({
    i,
    textContent: a.textContent,
    pair: a.textContent.split(" ")[0].replace(",", ""),
  }))
  .sort((a, b) => a.pair > b.pair);

// find in 'arr' array elements duplicated by the 'pair' key. keep those that are duplicated. i.e. remove the first one and keep the others
const findDuplicates = (arr) => {
  const result = [];
  const map = new Map();
  for (const item of arr) {
    if (map.has(item.pair)) {
      result.push(item);
    } else {
      map.set(item.pair, true);
    }
  }
  return result;
};

// get duplicate elements - RUN THIS before trying to delete the alert logs
findDuplicates(arr).map((item) => document.querySelectorAll(listSelector)[item.i]);

// click on duplicate elements (x) icon to remove them
findDuplicates(arr).forEach((item) =>
  setTimeout(
    () => document.querySelectorAll(listSelector)[item.i].parentElement.querySelector('[role="button"]').click(),
    100
  )
);