Removing products from wishlist. A lot of if blocks, hard to follow paths.

remove-wishlist-products.js

  static removeProductFromWishListHandler(e) {
    e.stopPropagation();
    const target = $(e.currentTarget);

    const $wishlistList = $(".wishlist-list__body");
    const productCode = target.data("product-code");
    const $myFavouritesRollover = $(".mini-favourites");
    const $myFavouritesSendList = $(".wishlist-send-list");
    const emptyWishlistHTML = $("#emptyWishlistPopupTemplate").html();
    const $myFavouritesRolloverContainer = $(
      ".my-favourites-rollover__content",
      $myFavouritesRollover
    );
    const $myFavouritesRolloverControls = $(
      ".my-favourites-rollover__controls",
      $myFavouritesRollover
    );

    if ($wishlistList.length) startRefreshEffects($wishlistList);

    const setAsEmpty = () => {
      $myFavouritesSendList.remove();

      if ($myFavouritesRolloverContainer.length) {
        $myFavouritesRolloverContainer.remove();
        $myFavouritesRolloverControls.remove();

        $myFavouritesRollover.prepend(emptyWishlistHTML);
      }
    };

    requestPost("/favourites/remove", { productCode }, { format: "text" }).then(
      response => {
        const $wishlistCount = $("[data-wishlist-item-count]");
        const count = parseInt(
          $(response)
            .find("[data-wishlist-item-count]")
            .attr("data-wishlist-item-count"),
          10
        );

        if (count === 0) {
          setAsEmpty();
        }

        if (count <= 12) {
          $(".js-load-more-favourites").hide();
          $(".column-block").show();
        }

        if ($wishlistList.length) {
          if ($(".wishlist--limit-achieved").length)
            $(".wishlist--limit-achieved").remove();
          $wishlistList.html(
            $(response)
              .find(".wishlist-list__body")
              .html()
          );
          window.BB.product.bindToAddToCartForm();
          if ($(".js-load-more-favourites").length) {
            $(".js-load-more-favourites")
              .find("span")
              .html(`(${count})`);
          } else {
            $(".column-block").show();
          }
          $(".remove-favourite")
            .removeAttr("disabled")
            .removeClass("disabled");
          initWishlistATB();
          setTimeout(() => endRefreshEffects($wishlistList), 500);
        }

        if (!$(response).find(".wishlist-list__body").length) {
          const $listerContainer = $(".wishlist");
          $listerContainer.html(
            $(response)
              .find(".wishlist")
              .html()
          );
        }

        $wishlistCount.html(count);
        $wishlistCount.attr("data-wishlist-item-count", count);

        this.refreshWishListRollover();
      }
    );

    return false; 
}