Detect react wiped ad slots

detectWipedAdSlotsFromGPT.js

/*
 sometimes react wipes ad slots from the DOM
 this code is one option to detect when ad slots have been wiped by react
*/

const slotsWiped = [];

/**
 * Checks for wiped ad slots from react
 *
 * @returns {undefined} - undefined
 */
function checkForWipedAdSlots() {
  // store defined slots from googletag
  const slots = window.googletag.pubads().getSlots();

  // loop through each slot checking if the defined slot id exists in the DOM
  slots.forEach((slot) => {
    const slotId = slot.getSlotElementId();

    // conditionally check if the defined slot id exists in the DOM and not already stored
    if (!document.getElementById(slotId) && slotsWiped.indexOf(slotId) === -1) {
      // handle wiped ad slots here
      slotsWiped.push(slotId);
    }
  });
}