(function () {
    // SELECTORS
    const searchButton = document.querySelector(".search-trigger"),
          closeButton = document.querySelector(".search-overlay__close"),
          searchOverlay = document.querySelector(".search-overlay"),
          searchField = document.querySelector('#search-term'),
          resultsDiv = document.querySelector('#search-overlay__results'),
          body = document.body;
          postsRequest = fetch(...),
          pagesRequest = fetch(...),