From 9c33a2232bd348f27f371441f6d0c37b5ba575e8 Mon Sep 17 00:00:00 2001
From: Pavel Djundik <xPaw@users.noreply.github.com>
Date: Thu, 18 Jul 2024 13:52:39 +0300
Subject: [PATCH 1/5] Remove unused vars

---
 code.user.js | 101 +++++++++++++++++++--------------------------------
 1 file changed, 38 insertions(+), 63 deletions(-)

diff --git a/code.user.js b/code.user.js
index cd309c2..9a14570 100644
--- a/code.user.js
+++ b/code.user.js
@@ -28,7 +28,7 @@
 
 /* disable some eslint rules until the code is cleaned up */
 /* global unsafeWindow, luxon, jQuery, async, localforage */
-/* eslint no-undef: off, no-unused-vars: off */
+/* eslint no-undef: off */
 
 // jQuery is already added by Steam, force no conflict mode.
 (function($, async) {
@@ -213,6 +213,7 @@
         try {
             return localStorage.getItem(name);
         } catch (e) {
+            logConsole('Failed to get local storage item ' + name + ', ' + e + '.')
             return null;
         }
     }
@@ -231,6 +232,7 @@
         try {
             return sessionStorage.getItem(name);
         } catch (e) {
+            logConsole('Failed to get session storage item ' + name + ', ' + e + '.')
             return null;
         }
     }
@@ -527,12 +529,12 @@
                         else
                             market.getCurrentPriceHistory(appid, market_name, callback);
                     })
-                    .catch(function(error) {
+                    .catch(function() {
                         market.getCurrentPriceHistory(appid, market_name, callback);
                     });
             } else
                 market.getCurrentPriceHistory(appid, market_name, callback);
-        } catch (e) {
+        } catch {
             return callback(ERROR_FAILED);
         }
     };
@@ -574,7 +576,7 @@
                 },
                 dataType: 'json'
             });
-        } catch (e) {
+        } catch {
             return callback(ERROR_FAILED);
         }
         //http://steamcommunity.com/auction/ajaxgetgoovalueforitemtype/?appid=582980&item_type=18&border_color=0
@@ -609,7 +611,7 @@
                 },
                 dataType: 'json'
             });
-        } catch (e) {
+        } catch {
             return callback(ERROR_FAILED);
         }
 
@@ -642,7 +644,7 @@
                 },
                 dataType: 'json'
             });
-        } catch (e) {
+        } catch {
             return callback(ERROR_FAILED);
         }
 
@@ -713,10 +715,10 @@
                     else
                         return market.getCurrentMarketItemNameId(appid, market_name, callback);
                 })
-                .catch(function(error) {
+                .catch(function() {
                     return market.getCurrentMarketItemNameId(appid, market_name, callback);
                 });
-        } catch (e) {
+        } catch {
             return callback(ERROR_FAILED);
         }
     }
@@ -783,14 +785,14 @@
                             market.getCurrentItemOrdersHistogram(item, market_name, callback);
                         }
                     })
-                    .catch(function(error) {
+                    .catch(function() {
                         market.getCurrentItemOrdersHistogram(item, market_name, callback);
                     });
             } else {
                 market.getCurrentItemOrdersHistogram(item, market_name, callback);
             }
 
-        } catch (e) {
+        } catch {
             return callback(ERROR_FAILED);
         }
     };
@@ -874,10 +876,6 @@
     };
     //#endregion
 
-    function replaceAll(str, find, replace) {
-        return str.replace(new RegExp(find, 'g'), replace);
-    }
-
     // Cannot use encodeURI / encodeURIComponent, Steam only escapes certain characters.
     function escapeURI(name) {
         var previousName = '';
@@ -1134,12 +1132,6 @@
         updateScroll();
     }
 
-    function clearLogDOM() {
-        logger.innerHTML = '';
-
-        updateScroll();
-    }
-
     function logConsole(text) {
         if (enableConsoleLog) {
             console.log(text);
@@ -1242,7 +1234,7 @@
             onQueueDrain();
         }
 
-        function sellAllItems(appId) {
+        function sellAllItems() {
             loadAllInventories().then(function() {
                     var items = getInventoryItems();
                     var filteredItems = [];
@@ -1396,7 +1388,6 @@
         }
 
         function scrapQueueWorker(item, callback) {
-            var failed = 0;
             var itemName = item.name || item.description.name;
             var itemId = item.assetid || item.id;
 
@@ -1418,7 +1409,7 @@
                     item.goo_value_expected = parseInt(goo.goo_value, 10);
 
                     market.grindIntoGoo(item,
-                        function(err, result) {
+                        function(err) {
                             if (err != ERROR_SUCCESS) {
                                 logConsole('Failed to turn item into gems for ' + itemName);
                                 logDOM(padLeft + ' - ' + itemName + ' not turned into gems due to unknown error.');
@@ -1467,12 +1458,11 @@
         }
 
         function boosterQueueWorker(item, callback) {
-            var failed = 0;
             var itemName = item.name || item.description.name;
             var itemId = item.assetid || item.id;
 
             market.unpackBoosterPack(item,
-                function(err, goo) {
+                function(err) {
                     totalNumberOfProcessedQueueItems++;
 
                     var digits = getNumberOfDigits(totalNumberOfQueuedItems);
@@ -1603,9 +1593,7 @@
         function canSellSelectedItemsManually(items) {
             // We have to construct an URL like this
             // https://steamcommunity.com/market/multisell?appid=730&contextid=2&items[]=Falchion%20Case&qty[]=100
-            var appid = items[0].appid;
             var contextid = items[0].contextid;
-
             var hasInvalidItem = false;
 
             items.forEach(function(item) {
@@ -1657,14 +1645,13 @@
 
             var numberOfQueuedItems = 0;
 
-            items.forEach(function(item, index, array) {
+            items.forEach(function(item) {
                 // Ignored queued items.
                 if (item.queued != null) {
                     return;
                 }
 
                 item.queued = true;
-                var itemId = item.assetid || item.id;
                 item.ignoreErrors = false;
                 itemQueue.push(item);
                 numberOfQueuedItems++;
@@ -1768,7 +1755,7 @@
         }
 
         // Initialize the inventory UI.
-        function initializeInventoryUI() {
+        function initializeInventoryUI() { // eslint-disable-line no-unused-vars
             var isOwnInventory = unsafeWindow.g_ActiveUser.strSteamId == unsafeWindow.g_steamID;
             var previousSelection = -1; // To store the index of the previous selection.
             updateInventoryUI(isOwnInventory);
@@ -1805,7 +1792,7 @@
                         previousSelection = selectedIndex; // Save previous.
                     }
                 },
-                selected: function(e, ui) {
+                selected: function() {
                     updateButtons();
                 }
             });
@@ -1813,7 +1800,7 @@
             if (typeof unsafeWindow.CInventory !== 'undefined') {
                 var originalSelectItem = unsafeWindow.CInventory.prototype.SelectItem;
 
-                unsafeWindow.CInventory.prototype.SelectItem = function(event, elItem, rgItem, bUserAction) {
+                unsafeWindow.CInventory.prototype.SelectItem = function(event, elItem, rgItem) {
                     originalSelectItem.apply(this, arguments);
 
                     updateButtons();
@@ -2200,7 +2187,7 @@
                 $('.sell_all').on('click',
                     '*',
                     function() {
-                        sellAllItems(appId);
+                        sellAllItems();
                     });
                 $('.sell_selected').on('click', '*', sellSelectedItems);
                 $('.sell_all_duplicates').on('click', '*', sellAllDuplicateItems);
@@ -2232,7 +2219,7 @@
 
                     $('#inventory_pagecontrols').observe('childlist',
                         '*',
-                        function(record) {
+                        function() {
                             updateInventoryPrices();
                         });
                 },
@@ -2305,12 +2292,12 @@
     if (currentPage == PAGE_INVENTORY || currentPage == PAGE_TRADEOFFER) {
 
         // Gets the active inventory.
-        function getActiveInventory() {
+        function getActiveInventory() { // eslint-disable-line no-unused-vars
             return unsafeWindow.g_ActiveInventory;
         }
 
         // Sets the prices for the items.
-        function setInventoryPrices(items) {
+        function setInventoryPrices(items) { // eslint-disable-line no-unused-vars
             inventoryPriceQueue.kill();
 
             items.forEach(function(item) {
@@ -2359,8 +2346,6 @@
             1);
 
         function inventoryPriceQueueWorker(item, ignoreErrors, callback) {
-            var priceInfo = getPriceInformationFromItem(item);
-
             var failed = 0;
             var itemName = item.name || item.description.name;
 
@@ -2442,7 +2427,7 @@
                         setTimeout(function() {
                             marketListingsQueueWorker(listing,
                                 true,
-                                function(success, cached) {
+                                function() {
                                     increaseMarketProgress();
                                     next(); // Go to the next queue item, regardless of success.
                                 });
@@ -2645,7 +2630,7 @@
                             setTimeout(function() {
                                 marketOverpricedQueueWorker(item,
                                     true,
-                                    function(success) {
+                                    function() {
                                         increaseMarketProgress();
                                         next(); // Go to the next queue item, regardless of success.
                                     });
@@ -2660,7 +2645,7 @@
             var listingUI = getListingFromLists(item.listing).elm;
 
             market.removeListing(item.listing, false,
-                function(errorRemove, data) {
+                function(errorRemove) {
                     if (!errorRemove) {
                         $('.actual_content', listingUI).css('background', COLOR_PENDING);
 
@@ -2758,7 +2743,7 @@
                             setTimeout(function() {
                                 marketRemoveQueueWorker(listingid,
                                     true,
-                                    function(success) {
+                                    function() {
                                         increaseMarketProgress();
                                         next(); // Go to the next queue item, regardless of success.
                                     });
@@ -2774,7 +2759,7 @@
             var isBuyOrder = listingUI.id.startsWith('mybuyorder_');
 
             market.removeListing(listingid, isBuyOrder,
-                function(errorRemove, data) {
+                function(errorRemove) {
                     if (!errorRemove) {
                         $('.actual_content', listingUI).css('background', COLOR_SUCCESS);
 
@@ -2822,7 +2807,7 @@
                             next();
                         },
                         'json')
-                    .fail(function(data) {
+                    .fail(function() {
                         increaseMarketProgress();
                         next();
                         return;
@@ -3000,7 +2985,7 @@
                         '<input type="checkbox" class="market_select_item"/>' +
                         '</div>');
 
-                    $('.market_select_item', this).change(function(e) {
+                    $('.market_select_item', this).change(function() {
                         updateMarketSelectAllButton();
                     });
                 }
@@ -3047,7 +3032,7 @@
                 }
             } else {
                 // This is on a market item page.
-                $('.market_home_listing_table').each(function(e) {
+                $('.market_home_listing_table').each(function() {
                     // Not on 'x requests to buy at y,yy or lower'.
                     if ($('#market_buyorder_info_show_details', $(this)).length > 0)
                         return;
@@ -3106,7 +3091,6 @@
             }
 
             // Change sort order (asc/desc).
-            var nextSort = isPrice ? 1 : (isDate ? 2 : 3);
             var asc = true;
 
             // (Re)set the asc/desc arrows.
@@ -3228,7 +3212,7 @@
         }
 
         // Initialize the market UI.
-        function initializeMarketUI() {
+        function initializeMarketUI() { // eslint-disable-line no-unused-vars
             $('.market_header_text').append('<progress id="see_market_progress" value="1" max="1" hidden>');
             marketProgressBar = document.getElementById('see_market_progress');
 
@@ -3310,8 +3294,6 @@
                 var selectionGroup = $(this).parent().parent().parent().parent();
                 var marketList = getListFromContainer(selectionGroup);
 
-                var invert = $('.market_select_item:checked', selectionGroup).length == $('.market_select_item', selectionGroup).length;
-
                 var count = 0
                 for (var i = 0; i < marketList.matchingItems.length; i++) {
                     if(count == 5){
@@ -3330,8 +3312,6 @@
                 var selectionGroup = $(this).parent().parent().parent().parent();
                 var marketList = getListFromContainer(selectionGroup);
 
-                var invert = $('.market_select_item:checked', selectionGroup).length == $('.market_select_item', selectionGroup).length;
-
                 var count = 0
                 for (var i = 0; i < marketList.matchingItems.length; i++) {
                     if(count == 25){
@@ -3362,7 +3342,7 @@
                     }
                 }
 
-                $('.market_listing_row', selectionGroup).each(function(index) {
+                $('.market_listing_row', selectionGroup).each(function() {
                     if ($(this).hasClass('overpriced'))
                         $('.market_select_item', $(this)).prop('checked', true);
                 });
@@ -3423,7 +3403,7 @@
     //#region Tradeoffers
     if (currentPage == PAGE_TRADEOFFER) {
         // Gets the trade offer's inventory items from the active inventory.
-        function getTradeOfferInventoryItems() {
+        function getTradeOfferInventoryItems() { // eslint-disable-line no-unused-vars
             var arr = [];
 
             for (var child in getActiveInventory().rgChildInventories) {
@@ -3454,7 +3434,7 @@
             return arr;
         }
 
-        function sumTradeOfferAssets(assets, user) {
+        function sumTradeOfferAssets(assets, user) { // eslint-disable-line no-unused-vars
             var total = {};
             var totalPrice = 0;
             for (let i = 0; i < assets.length; i++) {
@@ -3556,7 +3536,7 @@
             setInventoryPrices(items);
         };
 
-        $('.trade_right > div > div > div > .trade_item_box').observe('childlist subtree', function(record) {
+        $('.trade_right > div > div > div > .trade_item_box').observe('childlist subtree', function() {
             if (!hasLoadedAllTradeOfferItems())
                 return;
 
@@ -3583,7 +3563,7 @@
 
         $('#inventory_pagecontrols').observe('childlist',
             '*',
-            function(record) {
+            function() {
                 updateInventoryPrices();
             });
 
@@ -3676,7 +3656,7 @@
             '</div>' +
             '</div>');
 
-        var dialog = unsafeWindow.ShowConfirmDialog('Steam Economy Enhancer', price_options).done(function() {
+        unsafeWindow.ShowConfirmDialog('Steam Economy Enhancer', price_options).done(function() {
             setSetting(SETTING_MIN_NORMAL_PRICE, $('#' + SETTING_MIN_NORMAL_PRICE, price_options).val());
             setSetting(SETTING_MAX_NORMAL_PRICE, $('#' + SETTING_MAX_NORMAL_PRICE, price_options).val());
             setSetting(SETTING_MIN_FOIL_PRICE, $('#' + SETTING_MIN_FOIL_PRICE, price_options).val());
@@ -3792,10 +3772,5 @@
 
         iterator(0);
     };
-
-    String.prototype.replaceAll = function(search, replacement) {
-        var target = this;
-        return target.replace(new RegExp(search, 'g'), replacement);
-    };
     //#endregion
 })(jQuery, async);

From 6464d5e68eada77648d8f1ee37d5f01835aa9974 Mon Sep 17 00:00:00 2001
From: Pavel Djundik <xPaw@users.noreply.github.com>
Date: Thu, 18 Jul 2024 13:55:20 +0300
Subject: [PATCH 2/5] Fix up globals

---
 code.user.js | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/code.user.js b/code.user.js
index 9a14570..513f4cd 100644
--- a/code.user.js
+++ b/code.user.js
@@ -27,7 +27,7 @@
 // ==/UserScript==
 
 /* disable some eslint rules until the code is cleaned up */
-/* global unsafeWindow, luxon, jQuery, async, localforage */
+/* global unsafeWindow, luxon, jQuery, async, List, localforage */
 /* eslint no-undef: off */
 
 // jQuery is already added by Steam, force no conflict mode.
@@ -3503,12 +3503,12 @@
 
     function hasLoadedAllTradeOfferItems() {
         for (let i = 0; i < unsafeWindow.g_rgCurrentTradeStatus.them.assets.length; i++) {
-            const asset = UserThem.findAsset(unsafeWindow.g_rgCurrentTradeStatus.them.assets[i].appid, unsafeWindow.g_rgCurrentTradeStatus.them.assets[i].contextid, unsafeWindow.g_rgCurrentTradeStatus.them.assets[i].assetid);
+            const asset = unsafeWindow.UserThem.findAsset(unsafeWindow.g_rgCurrentTradeStatus.them.assets[i].appid, unsafeWindow.g_rgCurrentTradeStatus.them.assets[i].contextid, unsafeWindow.g_rgCurrentTradeStatus.them.assets[i].assetid);
             if (asset == null)
                 return false;
         }
         for (let i = 0; i < unsafeWindow.g_rgCurrentTradeStatus.me.assets.length; i++) {
-            const asset = UserYou.findAsset(unsafeWindow.g_rgCurrentTradeStatus.me.assets[i].appid, unsafeWindow.g_rgCurrentTradeStatus.me.assets[i].contextid, unsafeWindow.g_rgCurrentTradeStatus.me.assets[i].assetid);
+            const asset = unsafeWindow.UserYou.findAsset(unsafeWindow.g_rgCurrentTradeStatus.me.assets[i].appid, unsafeWindow.g_rgCurrentTradeStatus.me.assets[i].contextid, unsafeWindow.g_rgCurrentTradeStatus.me.assets[i].assetid);
             if (asset == null)
                 return false;
         }
@@ -3526,11 +3526,11 @@
         var updateInventoryPricesInTrade = function() {
             var items = [];
             for (let i = 0; i < unsafeWindow.g_rgCurrentTradeStatus.them.assets.length; i++) {
-                const asset = UserThem.findAsset(unsafeWindow.g_rgCurrentTradeStatus.them.assets[i].appid, unsafeWindow.g_rgCurrentTradeStatus.them.assets[i].contextid, unsafeWindow.g_rgCurrentTradeStatus.them.assets[i].assetid);
+                const asset = unsafeWindow.UserThem.findAsset(unsafeWindow.g_rgCurrentTradeStatus.them.assets[i].appid, unsafeWindow.g_rgCurrentTradeStatus.them.assets[i].contextid, unsafeWindow.g_rgCurrentTradeStatus.them.assets[i].assetid);
                 items.push(asset);
             }
             for (let i = 0; i < unsafeWindow.g_rgCurrentTradeStatus.me.assets.length; i++) {
-                const asset = UserYou.findAsset(unsafeWindow.g_rgCurrentTradeStatus.me.assets[i].appid, unsafeWindow.g_rgCurrentTradeStatus.me.assets[i].contextid, unsafeWindow.g_rgCurrentTradeStatus.me.assets[i].assetid);
+                const asset = unsafeWindow.UserYou.findAsset(unsafeWindow.g_rgCurrentTradeStatus.me.assets[i].appid, unsafeWindow.g_rgCurrentTradeStatus.me.assets[i].contextid, unsafeWindow.g_rgCurrentTradeStatus.me.assets[i].assetid);
                 items.push(asset);
             }
             setInventoryPrices(items);
@@ -3550,8 +3550,8 @@
             $('#trade_offer_your_sum').remove();
             $('#trade_offer_their_sum').remove();
 
-            var your_sum = sumTradeOfferAssets(unsafeWindow.g_rgCurrentTradeStatus.me.assets, UserYou);
-            var their_sum = sumTradeOfferAssets(unsafeWindow.g_rgCurrentTradeStatus.them.assets, UserThem);
+            var your_sum = sumTradeOfferAssets(unsafeWindow.g_rgCurrentTradeStatus.me.assets, unsafeWindow.UserYou);
+            var their_sum = sumTradeOfferAssets(unsafeWindow.g_rgCurrentTradeStatus.them.assets, unsafeWindow.UserThem);
 
             $('div.offerheader:nth-child(1) > div:nth-child(3)').append('<div class="trade_offer_sum" id="trade_offer_your_sum">' + your_sum + '</div>');
             $('div.offerheader:nth-child(3) > div:nth-child(3)').append('<div class="trade_offer_sum" id="trade_offer_their_sum">' + their_sum + '</div>');

From c9d68a5ebbda08a63d0958b0673d2af4c3d743a2 Mon Sep 17 00:00:00 2001
From: Pavel Djundik <xPaw@users.noreply.github.com>
Date: Thu, 18 Jul 2024 14:08:29 +0300
Subject: [PATCH 3/5] Change var to let/const

---
 code.user.js      | 733 +++++++++++++++++++++++-----------------------
 eslint.config.mjs |  10 +-
 2 files changed, 370 insertions(+), 373 deletions(-)

diff --git a/code.user.js b/code.user.js
index 513f4cd..1816ca5 100644
--- a/code.user.js
+++ b/code.user.js
@@ -34,8 +34,6 @@
 (function($, async) {
     $.noConflict(true);
 
-    var DateTime = luxon.DateTime;
-
     const PAGE_MARKET = 0;
     const PAGE_MARKET_LISTING = 1;
     const PAGE_TRADEOFFER = 2;
@@ -53,23 +51,23 @@
     const ERROR_FAILED = 1;
     const ERROR_DATA = 2;
 
-    var marketLists = [];
-    var totalNumberOfProcessedQueueItems = 0;
-    var totalNumberOfQueuedItems = 0;
-    var totalPriceWithFeesOnMarket = 0;
-    var totalPriceWithoutFeesOnMarket = 0;
-    var totalScrap = 0;
+    const marketLists = [];
+    let totalNumberOfProcessedQueueItems = 0;
+    let totalNumberOfQueuedItems = 0;
+    let totalPriceWithFeesOnMarket = 0;
+    let totalPriceWithoutFeesOnMarket = 0;
+    let totalScrap = 0;
 
-    var spinnerBlock =
+    const spinnerBlock =
         '<div class="spinner"><div class="rect1"></div>&nbsp;<div class="rect2"></div>&nbsp;<div class="rect3"></div>&nbsp;<div class="rect4"></div>&nbsp;<div class="rect5"></div>&nbsp;</div>';
-    var numberOfFailedRequests = 0;
+    let numberOfFailedRequests = 0;
 
-    var enableConsoleLog = false;
+    const enableConsoleLog = false;
 
-    var country = typeof unsafeWindow.g_strCountryCode !== 'undefined' ? unsafeWindow.g_strCountryCode : undefined;
-    var isLoggedIn = typeof unsafeWindow.g_rgWalletInfo !== 'undefined' && unsafeWindow.g_rgWalletInfo != null || (typeof unsafeWindow.g_bLoggedIn !== 'undefined' && unsafeWindow.g_bLoggedIn);
+    const country = typeof unsafeWindow.g_strCountryCode !== 'undefined' ? unsafeWindow.g_strCountryCode : undefined;
+    const isLoggedIn = typeof unsafeWindow.g_rgWalletInfo !== 'undefined' && unsafeWindow.g_rgWalletInfo != null || (typeof unsafeWindow.g_bLoggedIn !== 'undefined' && unsafeWindow.g_bLoggedIn);
 
-    var currentPage = window.location.href.includes('.com/market') ?
+    const currentPage = window.location.href.includes('.com/market') ?
         (window.location.href.includes('market/listings') ?
             PAGE_MARKET_LISTING :
             PAGE_MARKET) :
@@ -77,11 +75,11 @@
             PAGE_TRADEOFFER :
             PAGE_INVENTORY);
 
-    var market = new SteamMarket(unsafeWindow.g_rgAppContextData,
+    const market = new SteamMarket(unsafeWindow.g_rgAppContextData,
         getInventoryUrl(),
         isLoggedIn ? unsafeWindow.g_rgWalletInfo : undefined);
 
-    var currencyId =
+    const currencyId =
         isLoggedIn &&
         market != null &&
         market.walletInfo != null &&
@@ -148,7 +146,7 @@
     const SETTING_RELIST_AUTOMATICALLY = 'SETTING_RELIST_AUTOMATICALLY';
     const SETTING_MARKET_PAGE_COUNT = 'SETTING_MARKET_PAGE_COUNT';
 
-    var settingDefaults = {
+    const settingDefaults = {
         SETTING_MIN_NORMAL_PRICE: 0.05,
         SETTING_MAX_NORMAL_PRICE: 2.50,
         SETTING_MIN_FOIL_PRICE: 0.15,
@@ -179,19 +177,19 @@
 
     //#region Storage
 
-    var storagePersistent = localforage.createInstance({
+    const storagePersistent = localforage.createInstance({
         name: 'see_persistent'
     });
 
-    var storageSession;
+    let storageSession;
 
-    var currentUrl = new URL(window.location.href);
-    var noCache = currentUrl.searchParams.get('no-cache') != null;
+    const currentUrl = new URL(window.location.href);
+    const noCache = currentUrl.searchParams.get('no-cache') != null;
 
     // This does not work the same as the 'normal' session storage because opening a new browser session/tab will clear the cache.
     // For this reason, a rolling cache is used.
     if (getSessionStorageItem('SESSION') == null || noCache) {
-        var lastCache = getSettingWithDefault(SETTING_LAST_CACHE);
+        let lastCache = getSettingWithDefault(SETTING_LAST_CACHE);
         if (lastCache > 5)
             lastCache = 0;
 
@@ -254,14 +252,14 @@
     }
 
     function getPriceInformationFromItem(item) {
-        var isTradingCard = getIsTradingCard(item);
-        var isFoilTradingCard = getIsFoilTradingCard(item);
+        const isTradingCard = getIsTradingCard(item);
+        const isFoilTradingCard = getIsFoilTradingCard(item);
         return getPriceInformation(isTradingCard, isFoilTradingCard);
     }
 
     function getPriceInformation(isTradingCard, isFoilTradingCard) {
-        var maxPrice = 0;
-        var minPrice = 0;
+        let maxPrice = 0;
+        let minPrice = 0;
 
         if (!isTradingCard) {
             maxPrice = getSettingWithDefault(SETTING_MAX_MISC_PRICE);
@@ -278,8 +276,8 @@
         maxPrice = maxPrice * 100.0;
         minPrice = minPrice * 100.0;
 
-        var maxPriceBeforeFees = market.getPriceBeforeFees(maxPrice);
-        var minPriceBeforeFees = market.getPriceBeforeFees(minPrice);
+        const maxPriceBeforeFees = market.getPriceBeforeFees(maxPrice);
+        const minPriceBeforeFees = market.getPriceBeforeFees(minPrice);
 
         return {
             maxPrice,
@@ -291,15 +289,15 @@
 
     // Calculates the average history price, before the fee.
     function calculateAverageHistoryPriceBeforeFees(history) {
-        var highest = 0;
-        var total = 0;
+        let highest = 0;
+        let total = 0;
 
         if (history != null) {
             // Highest average price in the last xx hours.
-            var timeAgo = Date.now() - (getSettingWithDefault(SETTING_PRICE_HISTORY_HOURS) * 60 * 60 * 1000);
+            const timeAgo = Date.now() - (getSettingWithDefault(SETTING_PRICE_HISTORY_HOURS) * 60 * 60 * 1000);
 
             history.forEach(function(historyItem) {
-                var d = new Date(historyItem[0]);
+                const d = new Date(historyItem[0]);
                 if (d.getTime() > timeAgo) {
                     highest += historyItem[1] * historyItem[2];
                     total += historyItem[2];
@@ -322,18 +320,18 @@
             histogram.sell_order_graph == null)
             return 0;
 
-        var listingPrice = market.getPriceBeforeFees(histogram.lowest_sell_order);
+        let listingPrice = market.getPriceBeforeFees(histogram.lowest_sell_order);
 
-        var shouldIgnoreLowestListingOnLowQuantity = getSettingWithDefault(SETTING_PRICE_IGNORE_LOWEST_Q) == 1;
+        const shouldIgnoreLowestListingOnLowQuantity = getSettingWithDefault(SETTING_PRICE_IGNORE_LOWEST_Q) == 1;
 
         if (shouldIgnoreLowestListingOnLowQuantity && histogram.sell_order_graph.length >= 2) {
-            var listingPrice2ndLowest = market.getPriceBeforeFees(histogram.sell_order_graph[1][0] * 100);
+            const listingPrice2ndLowest = market.getPriceBeforeFees(histogram.sell_order_graph[1][0] * 100);
 
             if (listingPrice2ndLowest > listingPrice) {
-                var numberOfListingsLowest = histogram.sell_order_graph[0][1];
-                var numberOfListings2ndLowest = histogram.sell_order_graph[1][1];
+                const numberOfListingsLowest = histogram.sell_order_graph[0][1];
+                const numberOfListings2ndLowest = histogram.sell_order_graph[1][1];
 
-                var percentageLower = (100 * (numberOfListingsLowest / numberOfListings2ndLowest));
+                const percentageLower = (100 * (numberOfListingsLowest / numberOfListings2ndLowest));
 
                 // The percentage should change based on the quantity (for example, 1200 listings vs 5, or 1 vs 25).
                 if (numberOfListings2ndLowest >= 1000 && percentageLower <= 5) {
@@ -365,16 +363,16 @@
     // Calculate the sell price based on the history and listings.
     // applyOffset specifies whether the price offset should be applied when the listings are used to determine the price.
     function calculateSellPriceBeforeFees(history, histogram, applyOffset, minPriceBeforeFees, maxPriceBeforeFees) {
-        var historyPrice = calculateAverageHistoryPriceBeforeFees(history);
-        var listingPrice = calculateListingPriceBeforeFees(histogram);
-        var buyPrice = calculateBuyOrderPriceBeforeFees(histogram);
+        const historyPrice = calculateAverageHistoryPriceBeforeFees(history);
+        const listingPrice = calculateListingPriceBeforeFees(histogram);
+        const buyPrice = calculateBuyOrderPriceBeforeFees(histogram);
 
-        var shouldUseAverage = getSettingWithDefault(SETTING_PRICE_ALGORITHM) == 1;
-        var shouldUseBuyOrder = getSettingWithDefault(SETTING_PRICE_ALGORITHM) == 3;
+        const shouldUseAverage = getSettingWithDefault(SETTING_PRICE_ALGORITHM) == 1;
+        const shouldUseBuyOrder = getSettingWithDefault(SETTING_PRICE_ALGORITHM) == 3;
 
         // If the highest average price is lower than the first listing, return the offset + that listing.
         // Otherwise, use the highest average price instead.
-        var calculatedPrice = 0;
+        let calculatedPrice = 0;
         if (shouldUseBuyOrder && buyPrice !== -2) {
             calculatedPrice = buyPrice;
         } else if (historyPrice < listingPrice || !shouldUseAverage) {
@@ -383,7 +381,7 @@
             calculatedPrice = historyPrice;
         }
 
-        var changedToMax = false;
+        let changedToMax = false;
         // List for the maximum price if there are no listings yet.
         if (calculatedPrice == 0) {
             calculatedPrice = maxPriceBeforeFees;
@@ -403,7 +401,7 @@
 
         // In case there's a buy order higher than the calculated price.
         if (typeof histogram !== 'undefined' && histogram != null && histogram.highest_buy_order != null) {
-            var buyOrderPrice = market.getPriceBeforeFees(histogram.highest_buy_order);
+            const buyOrderPrice = market.getPriceBeforeFees(histogram.highest_buy_order);
             if (buyOrderPrice > calculatedPrice)
                 calculatedPrice = buyOrderPrice;
         }
@@ -436,8 +434,8 @@
     // Sell an item with a price in cents.
     // Price is before fees.
     SteamMarket.prototype.sellItem = function(item, price, callback /*err, data*/ ) {
-        var sessionId = readCookie('sessionid');
-        var itemId = item.assetid || item.id;
+        const sessionId = readCookie('sessionid');
+        const itemId = item.assetid || item.id;
         $.ajax({
             type: "POST",
             url: window.location.origin + '/market/sellitem/',
@@ -466,7 +464,7 @@
     // Removes an item.
     // Item is the unique item id.
     SteamMarket.prototype.removeListing = function(item, isBuyOrder, callback /*err, data*/ ) {
-        var sessionId = readCookie('sessionid');
+        const sessionId = readCookie('sessionid');
 
         if (isBuyOrder) {
             $.ajax({
@@ -511,16 +509,16 @@
     // Price is inclusive of fees.
     SteamMarket.prototype.getPriceHistory = function(item, cache, callback) {
         try {
-            var market_name = getMarketHashName(item);
+            const market_name = getMarketHashName(item);
             if (market_name == null) {
                 callback(ERROR_FAILED);
                 return;
             }
 
-            var appid = item.appid;
+            const appid = item.appid;
 
             if (cache) {
-                var storage_hash = 'pricehistory_' + appid + '+' + market_name;
+                const storage_hash = 'pricehistory_' + appid + '+' + market_name;
 
                 storageSession.getItem(storage_hash)
                     .then(function(value) {
@@ -541,14 +539,14 @@
 
     SteamMarket.prototype.getGooValue = function(item, callback) {
         try {
-            var appid = item.market_fee_app;
+            let appid = item.market_fee_app;
 
             for (const action of item.owner_actions) {
                 if (!action.link || !action.link.startsWith('javascript:GetGooValue')) {
                     continue;
                 }
 
-                var rgMatches = action.link.match( /GetGooValue\( *'%contextid%', *'%assetid%', *'?(?<appid>[0-9]+)'?/ );
+                const rgMatches = action.link.match( /GetGooValue\( *'%contextid%', *'%assetid%', *'?(?<appid>[0-9]+)'?/ );
 
                 if (!rgMatches) {
                     continue;
@@ -558,7 +556,7 @@
                 break;
             }
 
-            var sessionId = readCookie('sessionid');
+            const sessionId = readCookie('sessionid');
             $.ajax({
                 type: "GET",
                 url: this.inventoryUrlBase + 'ajaxgetgoovalue/',
@@ -592,7 +590,7 @@
     // Grinds the item into gems.
     SteamMarket.prototype.grindIntoGoo = function(item, callback) {
         try {
-            var sessionId = readCookie('sessionid');
+            const sessionId = readCookie('sessionid');
             $.ajax({
                 type: "POST",
                 url: this.inventoryUrlBase + 'ajaxgrindintogoo/',
@@ -627,7 +625,7 @@
     // Unpacks the booster pack.
     SteamMarket.prototype.unpackBoosterPack = function(item, callback) {
         try {
-            var sessionId = readCookie('sessionid');
+            const sessionId = readCookie('sessionid');
             $.ajax({
                 type: "POST",
                 url: this.inventoryUrlBase + 'ajaxunpackbooster/',
@@ -656,7 +654,7 @@
 
     // Get the current price history for an item.
     SteamMarket.prototype.getCurrentPriceHistory = function(appid, market_name, callback) {
-        var url = window.location.origin +
+        const url = window.location.origin +
             '/market/pricehistory/?appid=' +
             appid +
             '&market_hash_name=' +
@@ -670,13 +668,13 @@
                     }
 
                     // Multiply prices so they're in pennies.
-                    for (var i = 0; i < data.prices.length; i++) {
+                    for (let i = 0; i < data.prices.length; i++) {
                         data.prices[i][1] *= 100;
                         data.prices[i][2] = parseInt(data.prices[i][2]);
                     }
 
                     // Store the price history in the session storage.
-                    var storage_hash = 'pricehistory_' + appid + '+' + market_name;
+                    const storage_hash = 'pricehistory_' + appid + '+' + market_name;
                     storageSession.setItem(storage_hash, data.prices);
 
                     callback(ERROR_SUCCESS, data.prices, false);
@@ -699,14 +697,14 @@
     // This id never changes so we can store this in the persistent storage.
     SteamMarket.prototype.getMarketItemNameId = function(item, callback) {
         try {
-            var market_name = getMarketHashName(item);
+            const market_name = getMarketHashName(item);
             if (market_name == null) {
                 callback(ERROR_FAILED);
                 return;
             }
 
-            var appid = item.appid;
-            var storage_hash = 'itemnameid_' + appid + '+' + market_name;
+            const appid = item.appid;
+            const storage_hash = 'itemnameid_' + appid + '+' + market_name;
 
             storagePersistent.getItem(storage_hash)
                 .then(function(value) {
@@ -725,19 +723,19 @@
 
     // Get the item name id from a market item.
     SteamMarket.prototype.getCurrentMarketItemNameId = function(appid, market_name, callback) {
-        var url = window.location.origin + '/market/listings/' + appid + '/' + market_name;
+        const url = window.location.origin + '/market/listings/' + appid + '/' + market_name;
         $.get(url,
                 function(page) {
-                    var matches = /Market_LoadOrderSpread\( (\d+) \);/.exec(page);
+                    const matches = /Market_LoadOrderSpread\( (\d+) \);/.exec(page);
                     if (matches == null) {
                         callback(ERROR_DATA);
                         return;
                     }
 
-                    var item_nameid = matches[1];
+                    const item_nameid = matches[1];
 
                     // Store the item name id in the persistent storage.
-                    var storage_hash = 'itemnameid_' + appid + '+' + market_name;
+                    const storage_hash = 'itemnameid_' + appid + '+' + market_name;
                     storagePersistent.setItem(storage_hash, item_nameid);
 
                     callback(ERROR_SUCCESS, item_nameid);
@@ -767,16 +765,16 @@
     //}
     SteamMarket.prototype.getItemOrdersHistogram = function(item, cache, callback) {
         try {
-            var market_name = getMarketHashName(item);
+            const market_name = getMarketHashName(item);
             if (market_name == null) {
                 callback(ERROR_FAILED);
                 return;
             }
 
-            var appid = item.appid;
+            const appid = item.appid;
 
             if (cache) {
-                var storage_hash = 'itemordershistogram_' + appid + '+' + market_name;
+                const storage_hash = 'itemordershistogram_' + appid + '+' + market_name;
                 storageSession.getItem(storage_hash)
                     .then(function(value) {
                         if (value != null)
@@ -808,7 +806,7 @@
                         callback(ERROR_FAILED);
                     return;
                 }
-                var url = window.location.origin +
+                const url = window.location.origin +
                     '/market/itemordershistogram?country=' +
                     country +
                     '&language=english&currency=' +
@@ -820,7 +818,7 @@
                 $.get(url,
                         function(histogram) {
                             // Store the histogram in the session storage.
-                            var storage_hash = 'itemordershistogram_' + item.appid + '+' + market_name;
+                            const storage_hash = 'itemordershistogram_' + item.appid + '+' + market_name;
                             storageSession.setItem(storage_hash, histogram);
 
                             callback(ERROR_SUCCESS, histogram, false);
@@ -833,7 +831,7 @@
 
     // Calculate the price before fees (seller price) from the buyer price
     SteamMarket.prototype.getPriceBeforeFees = function(price, item) {
-        var publisherFee = -1;
+        let publisherFee = -1;
 
         if (item != null) {
             if (item.market_fee != null)
@@ -850,13 +848,13 @@
         }
 
         price = Math.round(price);
-        var feeInfo = CalculateFeeAmount(price, publisherFee, this.walletInfo);
+        const feeInfo = CalculateFeeAmount(price, publisherFee, this.walletInfo);
         return price - feeInfo.fees;
     };
 
     // Calculate the buyer price from the seller price
     SteamMarket.prototype.getPriceIncludingFees = function(price, item) {
-        var publisherFee = -1;
+        let publisherFee = -1;
         if (item != null) {
             if (item.market_fee != null)
                 publisherFee = item.market_fee;
@@ -871,14 +869,14 @@
         }
 
         price = Math.round(price);
-        var feeInfo = CalculateAmountToSendForDesiredReceivedAmount(price, publisherFee, this.walletInfo);
+        const feeInfo = CalculateAmountToSendForDesiredReceivedAmount(price, publisherFee, this.walletInfo);
         return feeInfo.amount;
     };
     //#endregion
 
     // Cannot use encodeURI / encodeURIComponent, Steam only escapes certain characters.
     function escapeURI(name) {
-        var previousName = '';
+        let previousName = '';
         while (previousName != name) {
             previousName = name;
             name = name.replace('?', '%3F')
@@ -912,13 +910,13 @@
         if (item == null)
             return false;
         // This is available on the inventory page.
-        var tags = item.tags != null ?
+        const tags = item.tags != null ?
             item.tags :
             (item.description != null && item.description.tags != null ?
                 item.description.tags :
                 null);
         if (tags != null) {
-            var isTaggedAsCrate = false;
+            let isTaggedAsCrate = false;
             tags.forEach(function (arrayItem) {
                 if (arrayItem.category == 'Type')
                     if (arrayItem.internal_name == 'Supply Crate')
@@ -934,13 +932,13 @@
             return false;
 
         // This is available on the inventory page.
-        var tags = item.tags != null ?
+        const tags = item.tags != null ?
             item.tags :
             (item.description != null && item.description.tags != null ?
                 item.description.tags :
                 null);
         if (tags != null) {
-            var isTaggedAsTradingCard = false;
+            let isTaggedAsTradingCard = false;
             tags.forEach(function(arrayItem) {
                 if (arrayItem.category == 'item_class')
                     if (arrayItem.internal_name == 'item_class_2') // trading card.
@@ -952,7 +950,7 @@
 
         // This is available on the market page.
         if (item.owner_actions != null) {
-            for (var i = 0; i < item.owner_actions.length; i++) {
+            for (let i = 0; i < item.owner_actions.length; i++) {
                 if (item.owner_actions[i].link == null)
                     continue;
 
@@ -975,13 +973,13 @@
             return false;
 
         // This is available on the inventory page.
-        var tags = item.tags != null ?
+        const tags = item.tags != null ?
             item.tags :
             (item.description != null && item.description.tags != null ?
                 item.description.tags :
                 null);
         if (tags != null) {
-            var isTaggedAsFoilTradingCard = false;
+            let isTaggedAsFoilTradingCard = false;
             tags.forEach(function(arrayItem) {
                 if (arrayItem.category == 'cardborder')
                     if (arrayItem.internal_name == 'cardborder_1') // foil border.
@@ -993,7 +991,7 @@
 
         // This is available on the market page.
         if (item.owner_actions != null) {
-            for (var i = 0; i < item.owner_actions.length; i++) {
+            for (let i = 0; i < item.owner_actions.length; i++) {
                 if (item.owner_actions[i].link == null)
                     continue;
 
@@ -1022,12 +1020,12 @@
 
         publisherFee = (publisherFee == null) ? 0 : publisherFee;
         // Since CalculateFeeAmount has a Math.floor, we could be off a cent or two. Let's check:
-        var iterations = 0; // shouldn't be needed, but included to be sure nothing unforseen causes us to get stuck
-        var nEstimatedAmountOfWalletFundsReceivedByOtherParty =
+        let iterations = 0; // shouldn't be needed, but included to be sure nothing unforseen causes us to get stuck
+        let nEstimatedAmountOfWalletFundsReceivedByOtherParty =
             parseInt((amount - parseInt(walletInfo['wallet_fee_base'])) /
                 (parseFloat(walletInfo['wallet_fee_percent']) + parseFloat(publisherFee) + 1));
-        var bEverUndershot = false;
-        var fees = CalculateAmountToSendForDesiredReceivedAmount(nEstimatedAmountOfWalletFundsReceivedByOtherParty,
+        let bEverUndershot = false;
+        let fees = CalculateAmountToSendForDesiredReceivedAmount(nEstimatedAmountOfWalletFundsReceivedByOtherParty,
             publisherFee,
             walletInfo);
         while (fees.amount != amount && iterations < 10) {
@@ -1077,11 +1075,11 @@
         }
 
         publisherFee = (publisherFee == null) ? 0 : publisherFee;
-        var nSteamFee = parseInt(Math.floor(Math.max(receivedAmount * parseFloat(walletInfo['wallet_fee_percent']),
+        const nSteamFee = parseInt(Math.floor(Math.max(receivedAmount * parseFloat(walletInfo['wallet_fee_percent']),
                 walletInfo['wallet_fee_minimum']) +
             parseInt(walletInfo['wallet_fee_base'])));
-        var nPublisherFee = parseInt(Math.floor(publisherFee > 0 ? Math.max(receivedAmount * publisherFee, 1) : 0));
-        var nAmountToSend = receivedAmount + nSteamFee + nPublisherFee;
+        const nPublisherFee = parseInt(Math.floor(publisherFee > 0 ? Math.max(receivedAmount * publisherFee, 1) : 0));
+        const nAmountToSend = receivedAmount + nSteamFee + nPublisherFee;
         return {
             steam_fee: nSteamFee,
             publisher_fee: nPublisherFee,
@@ -1091,10 +1089,10 @@
     }
 
     function readCookie(name) {
-        var nameEQ = name + "=";
-        var ca = document.cookie.split(';');
-        for (var i = 0; i < ca.length; i++) {
-            var c = ca[i];
+        const nameEQ = name + "=";
+        const ca = document.cookie.split(';');
+        for (let i = 0; i < ca.length; i++) {
+            let c = ca[i];
             while (c.charAt(0) == ' ')
                 c = c.substring(1, c.length);
             if (c.indexOf(nameEQ) == 0)
@@ -1104,7 +1102,7 @@
     }
 
     function isRetryMessage(message) {
-        var messageList = [
+        const messageList = [
             "You cannot sell any items until your previous action completes.",
             "There was a problem listing your item. Refresh the page and try again.",
             "We were unable to contact the game's item server. The game's item server may be down or Steam may be experiencing temporary connectivity issues. Your listing has not been created. Refresh the page and try again."
@@ -1115,13 +1113,13 @@
     //#endregion
 
     //#region Logging
-    var userScrolled = false;
-    var logger = document.createElement('div');
+    let userScrolled = false;
+    const logger = document.createElement('div');
     logger.setAttribute('id', 'logger');
 
     function updateScroll() {
         if (!userScrolled) {
-            var element = document.getElementById("logger");
+            const element = document.getElementById("logger");
             element.scrollTop = element.scrollHeight;
         }
     }
@@ -1153,7 +1151,7 @@
                 $(logger).parent().append('<div id="loggerTotal"></div>');
             }
 
-            var totals = document.getElementById('loggerTotal');
+            const totals = document.getElementById('loggerTotal');
             totals.innerHTML = '';
 
             if (totalPriceWithFeesOnMarket > 0) {
@@ -1168,16 +1166,16 @@
             }
         }
 
-        var sellQueue = async.queue(function(task, next) {
+        const sellQueue = async.queue(function(task, next) {
                 market.sellItem(task.item,
                     task.sellPrice,
                     function(err, data) {
                         totalNumberOfProcessedQueueItems++;
 
-                        var digits = getNumberOfDigits(totalNumberOfQueuedItems);
-                        var itemId = task.item.assetid || task.item.id;
-                        var itemName = task.item.name || task.item.description.name;
-                        var padLeft = padLeftZero('' + totalNumberOfProcessedQueueItems, digits) + ' / ' + totalNumberOfQueuedItems;
+                        const digits = getNumberOfDigits(totalNumberOfQueuedItems);
+                        const itemId = task.item.assetid || task.item.id;
+                        const itemName = task.item.name || task.item.description.name;
+                        const padLeft = padLeftZero('' + totalNumberOfProcessedQueueItems, digits) + ' / ' + totalNumberOfQueuedItems;
 
                         if (!err) {
                             logDOM(padLeft +
@@ -1236,8 +1234,8 @@
 
         function sellAllItems() {
             loadAllInventories().then(function() {
-                    var items = getInventoryItems();
-                    var filteredItems = [];
+                    const items = getInventoryItems();
+                    const filteredItems = [];
 
                     items.forEach(function(item) {
                         if (!item.marketable) {
@@ -1256,9 +1254,9 @@
 
         function sellAllDuplicateItems() {
             loadAllInventories().then(function () {
-                var items = getInventoryItems();
-                var marketableItems = [];
-                var filteredItems = [];
+                const items = getInventoryItems();
+                const marketableItems = [];
+                let filteredItems = [];
 
                 items.forEach(function (item) {
                     if (!item.marketable) {
@@ -1279,9 +1277,9 @@
 
         function gemAllDuplicateItems() {
             loadAllInventories().then(function () {
-                var items = getInventoryItems();
-                var filteredItems = [];
-                var numberOfQueuedItems = 0;
+                const items = getInventoryItems();
+                let filteredItems = [];
+                let numberOfQueuedItems = 0;
 
                 filteredItems = items.filter((e, i) => items.map(m => m.classid).indexOf(e.classid) !== i);
 
@@ -1294,8 +1292,8 @@
                         return;
                     }
 
-                    var canTurnIntoGems = false;
-                    for (var owner_action in item.owner_actions) {
+                    let canTurnIntoGems = false;
+                    for (const owner_action in item.owner_actions) {
                         if (item.owner_actions[owner_action].link != null && item.owner_actions[owner_action].link.includes('GetGooValue')) {
                             canTurnIntoGems = true;
                         }
@@ -1326,8 +1324,8 @@
 
         function sellAllCards() {
             loadAllInventories().then(function() {
-                    var items = getInventoryItems();
-                    var filteredItems = [];
+                    const items = getInventoryItems();
+                    const filteredItems = [];
 
                     items.forEach(function(item) {
                         if (!getIsTradingCard(item) || !item.marketable) {
@@ -1346,8 +1344,8 @@
 
         function sellAllCrates() {
             loadAllInventories().then(function () {
-                    var items = getInventoryItems();
-                    var filteredItems = [];
+                    const items = getInventoryItems();
+                    const filteredItems = [];
                     items.forEach(function (item) {
                         if (!getIsCrate(item) || !item.marketable) {
                             return;
@@ -1362,14 +1360,14 @@
                 });
         }
 
-        var scrapQueue = async.queue(function(item, next) {
+        const scrapQueue = async.queue(function(item, next) {
             scrapQueueWorker(item, function(success) {
                 if (success) {
                     setTimeout(function() {
                         next();
                     }, 250);
                 } else {
-                    var delay = numberOfFailedRequests > 1 ?
+                    const delay = numberOfFailedRequests > 1 ?
                         getRandomInt(30000, 45000) :
                         getRandomInt(1000, 1500);
 
@@ -1388,15 +1386,15 @@
         }
 
         function scrapQueueWorker(item, callback) {
-            var itemName = item.name || item.description.name;
-            var itemId = item.assetid || item.id;
+            const itemName = item.name || item.description.name;
+            const itemId = item.assetid || item.id;
 
             market.getGooValue(item,
                 function(err, goo) {
                     totalNumberOfProcessedQueueItems++;
 
-                    var digits = getNumberOfDigits(totalNumberOfQueuedItems);
-                    var padLeft = padLeftZero('' + totalNumberOfProcessedQueueItems, digits) + ' / ' + totalNumberOfQueuedItems;
+                    const digits = getNumberOfDigits(totalNumberOfQueuedItems);
+                    const padLeft = padLeftZero('' + totalNumberOfProcessedQueueItems, digits) + ' / ' + totalNumberOfQueuedItems;
 
                     if (err != ERROR_SUCCESS) {
                         logConsole('Failed to get gems value for ' + itemName);
@@ -1432,14 +1430,14 @@
                 });
         }
 
-        var boosterQueue = async.queue(function(item, next) {
+        const boosterQueue = async.queue(function(item, next) {
             boosterQueueWorker(item, function(success) {
                 if (success) {
                     setTimeout(function() {
                         next();
                     }, 250);
                 } else {
-                    var delay = numberOfFailedRequests > 1 ?
+                    const delay = numberOfFailedRequests > 1 ?
                         getRandomInt(30000, 45000) :
                         getRandomInt(1000, 1500);
 
@@ -1458,15 +1456,15 @@
         }
 
         function boosterQueueWorker(item, callback) {
-            var itemName = item.name || item.description.name;
-            var itemId = item.assetid || item.id;
+            const itemName = item.name || item.description.name;
+            const itemId = item.assetid || item.id;
 
             market.unpackBoosterPack(item,
                 function(err) {
                     totalNumberOfProcessedQueueItems++;
 
-                    var digits = getNumberOfDigits(totalNumberOfQueuedItems);
-                    var padLeft = padLeftZero('' + totalNumberOfProcessedQueueItems, digits) + ' / ' + totalNumberOfQueuedItems;
+                    const digits = getNumberOfDigits(totalNumberOfQueuedItems);
+                    const padLeft = padLeftZero('' + totalNumberOfProcessedQueueItems, digits) + ' / ' + totalNumberOfQueuedItems;
 
                     if (err != ERROR_SUCCESS) {
                         logConsole('Failed to unpack booster pack ' + itemName);
@@ -1486,12 +1484,12 @@
 
         // Turns the selected items into gems.
         function turnSelectedItemsIntoGems() {
-            var ids = getSelectedItems();
+            const ids = getSelectedItems();
 
             loadAllInventories().then(function() {
-                var items = getInventoryItems();
+                const items = getInventoryItems();
 
-                var numberOfQueuedItems = 0;
+                let numberOfQueuedItems = 0;
                 items.forEach(function(item) {
                     // Ignored queued items.
                     if (item.queued != null) {
@@ -1502,8 +1500,8 @@
                         return;
                     }
 
-                    var canTurnIntoGems = false;
-                    for (var owner_action in item.owner_actions) {
+                    let canTurnIntoGems = false;
+                    for (const owner_action in item.owner_actions) {
                         if (item.owner_actions[owner_action].link != null && item.owner_actions[owner_action].link.includes('GetGooValue')) {
                             canTurnIntoGems = true;
                         }
@@ -1512,7 +1510,7 @@
                     if (!canTurnIntoGems)
                         return;
 
-                    var itemId = item.assetid || item.id;
+                    const itemId = item.assetid || item.id;
                     if (ids.indexOf(itemId) !== -1) {
                         item.queued = true;
                         scrapQueue.push(item);
@@ -1536,12 +1534,12 @@
 
         // Unpacks the selected booster packs.
         function unpackSelectedBoosterPacks() {
-            var ids = getSelectedItems();
+            const ids = getSelectedItems();
 
             loadAllInventories().then(function() {
-                var items = getInventoryItems();
+                const items = getInventoryItems();
 
-                var numberOfQueuedItems = 0;
+                let numberOfQueuedItems = 0;
                 items.forEach(function(item) {
                     // Ignored queued items.
                     if (item.queued != null) {
@@ -1552,8 +1550,8 @@
                         return;
                     }
 
-                    var canOpenBooster = false;
-                    for (var owner_action in item.owner_actions) {
+                    let canOpenBooster = false;
+                    for (const owner_action in item.owner_actions) {
                         if (item.owner_actions[owner_action].link != null && item.owner_actions[owner_action].link.includes('OpenBooster')) {
                             canOpenBooster = true;
                         }
@@ -1562,7 +1560,7 @@
                     if (!canOpenBooster)
                         return;
 
-                    var itemId = item.assetid || item.id;
+                    const itemId = item.assetid || item.id;
                     if (ids.indexOf(itemId) !== -1) {
                         item.queued = true;
                         boosterQueue.push(item);
@@ -1593,8 +1591,8 @@
         function canSellSelectedItemsManually(items) {
             // We have to construct an URL like this
             // https://steamcommunity.com/market/multisell?appid=730&contextid=2&items[]=Falchion%20Case&qty[]=100
-            var contextid = items[0].contextid;
-            var hasInvalidItem = false;
+            const contextid = items[0].contextid;
+            let hasInvalidItem = false;
 
             items.forEach(function(item) {
                 if (item.contextid != contextid || item.commodity == false)
@@ -1609,27 +1607,27 @@
                 // We have to construct an URL like this
                 // https://steamcommunity.com/market/multisell?appid=730&contextid=2&items[]=Falchion%20Case&qty[]=100
 
-                var appid = items[0].appid;
-                var contextid = items[0].contextid;
+                const appid = items[0].appid;
+                const contextid = items[0].contextid;
 
-                var itemsWithQty = {};
+                const itemsWithQty = {};
 
                 items.forEach(function(item) {
                    itemsWithQty[item.market_hash_name] = itemsWithQty[item.market_hash_name] + 1 || 1;
                 });
 
-                var itemsString = '';
-                for (var itemName in itemsWithQty) {
+                let itemsString = '';
+                for (const itemName in itemsWithQty) {
                     itemsString += '&items[]=' + encodeURIComponent(itemName) + '&qty[]=' + itemsWithQty[itemName];
                 }
 
-                var baseUrl = window.location.origin + '/market/multisell';
-                var redirectUrl = baseUrl + '?appid=' + appid + '&contextid=' + contextid + itemsString;
+                const baseUrl = window.location.origin + '/market/multisell';
+                const redirectUrl = baseUrl + '?appid=' + appid + '&contextid=' + contextid + itemsString;
 
-                var dialog = unsafeWindow.ShowDialog('Steam Economy Enhancer', '<iframe frameBorder="0" height="650" width="900" src="' + redirectUrl + '"></iframe>');
+                const dialog = unsafeWindow.ShowDialog('Steam Economy Enhancer', '<iframe frameBorder="0" height="650" width="900" src="' + redirectUrl + '"></iframe>');
                 dialog.OnDismiss(function() {
                     items.forEach(function(item) {
-                        var itemId = item.assetid || item.id;
+                        const itemId = item.assetid || item.id;
                         $('#' + item.appid + '_' + item.contextid + '_' + itemId).css('background', COLOR_PENDING);
                     });
                 });
@@ -1643,7 +1641,7 @@
                 return;
             }
 
-            var numberOfQueuedItems = 0;
+            let numberOfQueuedItems = 0;
 
             items.forEach(function(item) {
                 // Ignored queued items.
@@ -1668,7 +1666,7 @@
             }
         }
 
-        var itemQueue = async.queue(function(item, next) {
+        const itemQueue = async.queue(function(item, next) {
             itemQueueWorker(item,
                 item.ignoreErrors,
                 function(success, cached) {
@@ -1683,7 +1681,7 @@
                             itemQueue.push(item);
                         }
 
-                        var delay = numberOfFailedRequests > 1 ?
+                        const delay = numberOfFailedRequests > 1 ?
                             getRandomInt(30000, 45000) :
                             getRandomInt(1000, 1500);
 
@@ -1699,10 +1697,10 @@
         }, 1);
 
         function itemQueueWorker(item, ignoreErrors, callback) {
-            var priceInfo = getPriceInformationFromItem(item);
+            const priceInfo = getPriceInformationFromItem(item);
 
-            var failed = 0;
-            var itemName = item.name || item.description.name;
+            let failed = 0;
+            const itemName = item.name || item.description.name;
 
             market.getPriceHistory(item,
                 true,
@@ -1731,7 +1729,7 @@
                             logConsole('============================')
                             logConsole(itemName);
 
-                            var sellPrice = calculateSellPriceBeforeFees(history,
+                            const sellPrice = calculateSellPriceBeforeFees(history,
                                 histogram,
                                 true,
                                 priceInfo.minPriceBeforeFees,
@@ -1756,8 +1754,8 @@
 
         // Initialize the inventory UI.
         function initializeInventoryUI() { // eslint-disable-line no-unused-vars
-            var isOwnInventory = unsafeWindow.g_ActiveUser.strSteamId == unsafeWindow.g_steamID;
-            var previousSelection = -1; // To store the index of the previous selection.
+            const isOwnInventory = unsafeWindow.g_ActiveUser.strSteamId == unsafeWindow.g_steamID;
+            let previousSelection = -1; // To store the index of the previous selection.
             updateInventoryUI(isOwnInventory);
 
             $('.games_list_tabs').on('click',
@@ -1771,12 +1769,12 @@
                 return;
 
             // Steam adds 'display:none' to items while searching. These should not be selected while using shift/ctrl.
-            var filter = ".itemHolder:not([style*=none])";
+            const filter = ".itemHolder:not([style*=none])";
             $('#inventories').selectable({
                 filter: filter,
                 selecting: function(e, ui) {
                     // Get selected item index.
-                    var selectedIndex = $(ui.selecting.tagName, e.target).index(ui.selecting);
+                    const selectedIndex = $(ui.selecting.tagName, e.target).index(ui.selecting);
 
                     // If shift key was pressed and there is previous - select them all.
                     if (e.shiftKey && previousSelection > -1) {
@@ -1798,7 +1796,7 @@
             });
 
             if (typeof unsafeWindow.CInventory !== 'undefined') {
-                var originalSelectItem = unsafeWindow.CInventory.prototype.SelectItem;
+                const originalSelectItem = unsafeWindow.CInventory.prototype.SelectItem;
 
                 unsafeWindow.CInventory.prototype.SelectItem = function(event, elItem, rgItem) {
                     originalSelectItem.apply(this, arguments);
@@ -1811,14 +1809,14 @@
 
         // Gets the selected items in the inventory.
         function getSelectedItems() {
-            var ids = [];
+            const ids = [];
             $('.inventory_ctn').each(function() {
                 $(this).find('.inventory_page').each(function() {
-                    var inventory_page = this;
+                    const inventory_page = this;
 
                     $(inventory_page).find('.itemHolder.ui-selected:not([style*=none])').each(function() {
                         $(this).find('.item').each(function() {
-                            var matches = this.id.match(/_(-?\d+)$/);
+                            const matches = this.id.match(/_(-?\d+)$/);
                             if (matches) {
                                 ids.push(matches[1]);
                             }
@@ -1832,18 +1830,18 @@
 
         // Gets the selected and marketable items in the inventory.
         function getInventorySelectedMarketableItems(callback) {
-            var ids = getSelectedItems();
+            const ids = getSelectedItems();
 
             loadAllInventories().then(function() {
-                var items = getInventoryItems();
-                var filteredItems = [];
+                const items = getInventoryItems();
+                const filteredItems = [];
 
                 items.forEach(function(item) {
                     if (!item.marketable) {
                         return;
                     }
 
-                    var itemId = item.assetid || item.id;
+                    const itemId = item.assetid || item.id;
                     if (ids.indexOf(itemId) !== -1) {
                         filteredItems.push(item);
                     }
@@ -1857,15 +1855,15 @@
 
         // Gets the selected and gemmable items in the inventory.
         function getInventorySelectedGemsItems(callback) {
-            var ids = getSelectedItems();
+            const ids = getSelectedItems();
 
             loadAllInventories().then(function() {
-                var items = getInventoryItems();
-                var filteredItems = [];
+                const items = getInventoryItems();
+                const filteredItems = [];
 
                 items.forEach(function(item) {
-                    var canTurnIntoGems = false;
-                    for (var owner_action in item.owner_actions) {
+                    let canTurnIntoGems = false;
+                    for (const owner_action in item.owner_actions) {
                         if (item.owner_actions[owner_action].link != null && item.owner_actions[owner_action].link.includes('GetGooValue')) {
                             canTurnIntoGems = true;
                         }
@@ -1874,7 +1872,7 @@
                     if (!canTurnIntoGems)
                         return;
 
-                    var itemId = item.assetid || item.id;
+                    const itemId = item.assetid || item.id;
                     if (ids.indexOf(itemId) !== -1) {
                         filteredItems.push(item);
                     }
@@ -1888,15 +1886,15 @@
 
         // Gets the selected and booster pack items in the inventory.
         function getInventorySelectedBoosterPackItems(callback) {
-            var ids = getSelectedItems();
+            const ids = getSelectedItems();
 
             loadAllInventories().then(function() {
-                var items = getInventoryItems();
-                var filteredItems = [];
+                const items = getInventoryItems();
+                const filteredItems = [];
 
                 items.forEach(function(item) {
-                    var canOpenBooster = false;
-                    for (var owner_action in item.owner_actions) {
+                    let canOpenBooster = false;
+                    for (const owner_action in item.owner_actions) {
                         if (item.owner_actions[owner_action].link != null && item.owner_actions[owner_action].link.includes('OpenBooster')) {
                             canOpenBooster = true;
                         }
@@ -1905,7 +1903,7 @@
                     if (!canOpenBooster)
                         return;
 
-                    var itemId = item.assetid || item.id;
+                    const itemId = item.assetid || item.id;
                     if (ids.indexOf(itemId) !== -1) {
                         filteredItems.push(item);
                     }
@@ -1920,7 +1918,7 @@
         // Updates the (selected) sell ... items button.
         function updateSellSelectedButton() {
             getInventorySelectedMarketableItems(function(items) {
-                var selectedItems = items.length;
+                const selectedItems = items.length;
                 if (items.length == 0) {
                     $('.sell_selected').hide();
                     $('.sell_manual').hide();
@@ -1940,7 +1938,7 @@
         // Updates the (selected) turn into ... gems button.
         function updateTurnIntoGemsButton() {
             getInventorySelectedGemsItems(function(items) {
-                var selectedItems = items.length;
+                const selectedItems = items.length;
                 if (items.length == 0) {
                     $('.turn_into_gems').hide();
                 } else {
@@ -1954,7 +1952,7 @@
         // Updates the (selected) open ... booster packs button.
         function updateOpenBoosterPacksButton() {
             getInventorySelectedBoosterPackItems(function(items) {
-                var selectedItems = items.length;
+                const selectedItems = items.length;
                 if (items.length == 0) {
                     $('.unpack_booster_packs').hide();
                 } else {
@@ -1972,7 +1970,7 @@
         }
 
         function updateInventorySelection(selectedItem) {
-            var item_info = $('#iteminfo' + unsafeWindow.iActiveSelectView);
+            const item_info = $('#iteminfo' + unsafeWindow.iActiveSelectView);
 
             if (!item_info.length)
                 return;
@@ -1981,10 +1979,10 @@
                 return;
 
             // Use a 'hard' item id instead of relying on the selected item_info (sometimes Steam temporarily changes the correct item (?)).
-            var item_info_id = item_info.attr('id');
+            const item_info_id = item_info.attr('id');
 
             // Move scrap to bottom, this is of little interest.
-            var scrap = $('#' + item_info_id + '_scrap_content');
+            const scrap = $('#' + item_info_id + '_scrap_content');
             scrap.next().insertBefore(scrap);
 
             // Skip unmarketable items
@@ -1995,19 +1993,19 @@
             //$('#' + item_info_id + '_item_market_actions > div:nth-child(1) > div:nth-child(2)')
             //    .remove(); // Starting at: x,xx.
 
-            var market_hash_name = getMarketHashName(selectedItem);
+            const market_hash_name = getMarketHashName(selectedItem);
             if (market_hash_name == null)
                 return;
 
-            var appid = selectedItem.appid;
-            var item = {
+            const appid = selectedItem.appid;
+            const item = {
                 appid: parseInt(appid),
                 description: {
                     market_hash_name: market_hash_name
                 }
             };
 
-            var ownerActions = $('#' + item_info_id + '_item_owner_actions');
+            const ownerActions = $('#' + item_info_id + '_item_owner_actions');
 
             // Move market link to a button
             ownerActions.append('<a class="btn_small btn_grey_white_innerfade" href="/market/listings/' + appid + '/' + market_hash_name + '"><span>View in Community Market</span></a>');
@@ -2016,9 +2014,9 @@
             // ownerActions is hidden on other games' inventories, we need to show it to have a "Market" button visible
             ownerActions.show();
 
-            var isBoosterPack = selectedItem.name.toLowerCase().endsWith('booster pack');
+            const isBoosterPack = selectedItem.name.toLowerCase().endsWith('booster pack');
             if (isBoosterPack) {
-                var tradingCardsUrl = "/market/search?q=&category_753_Game%5B%5D=tag_app_" + selectedItem.market_fee_app + "&category_753_item_class%5B%5D=tag_item_class_2&appid=753";
+                const tradingCardsUrl = "/market/search?q=&category_753_Game%5B%5D=tag_app_" + selectedItem.market_fee_app + "&category_753_item_class%5B%5D=tag_item_class_2&appid=753";
                 ownerActions.append('<br/> <a class="btn_small btn_grey_white_innerfade" href="' + tradingCardsUrl + '"><span>View trading cards in Community Market</span></a>');
             }
 
@@ -2044,7 +2042,7 @@
                         return;
                     }
 
-                    var groupMain = $('<div id="listings_group">' +
+                    const groupMain = $('<div id="listings_group">' +
                         '<div><div id="listings_sell">Sell</div>' +
                         histogram.sell_order_table +
                         '</div>' +
@@ -2056,7 +2054,7 @@
                     $('#' + item_info_id + '_item_market_actions > div').after(groupMain);
 
                     // Generate quick sell buttons.
-                    var prices = [];
+                    let prices = [];
 
                     if (histogram != null && histogram.highest_buy_order != null) {
                         prices.push(parseInt(histogram.highest_buy_order));
@@ -2072,7 +2070,7 @@
 
                     prices = prices.filter((v, i) => prices.indexOf(v) === i).sort((a, b) => a - b);
 
-                    var buttons = ' ';
+                    let buttons = ' ';
                     prices.forEach(function(e) {
                         buttons +=
                             '<a class="item_market_action_button item_market_action_button_green quick_sell" id="quick_sell' +
@@ -2102,7 +2100,7 @@
 
                     $('.quick_sell').on('click',
                         function() {
-                            var price = $(this).attr('id').replace('quick_sell', '');
+                            let price = $(this).attr('id').replace('quick_sell', '');
                             price = market.getPriceBeforeFees(price);
 
                             totalNumberOfQueuedItems++;
@@ -2115,7 +2113,7 @@
 
                     $('.quick_sell_custom').on('click',
                         function() {
-                            var price = $('#quick_sell_input', $('#' + item_info_id + '_item_market_actions', item_info)).val() * 100;
+                            let price = $('#quick_sell_input', $('#' + item_info_id + '_item_market_actions', item_info)).val() * 100;
                             price = market.getPriceBeforeFees(price);
 
                             totalNumberOfQueuedItems++;
@@ -2140,11 +2138,11 @@
                 .prepend('<span id="see_settings"><a href="javascript:void(0)">⬖ Steam Economy Enhancer</a></span>');
             $('#see_settings').on('click', '*', () => openSettings());
 
-            var appId = getActiveInventory().m_appid;
-            var showMiscOptions = appId == 753;
-            var TF2 = appId == 440;
+            const appId = getActiveInventory().m_appid;
+            const showMiscOptions = appId == 753;
+            const TF2 = appId == 440;
 
-            var sellButtons = $('<div id="inventory_sell_buttons" class="see_inventory_buttons">' +
+            const sellButtons = $('<div id="inventory_sell_buttons" class="see_inventory_buttons">' +
                 '<a class="btn_green_white_innerfade btn_medium_wide sell_all"><span>Sell All Items</span></a>' +
                 '<a class="btn_green_white_innerfade btn_medium_wide sell_all_duplicates"><span>Sell All Duplicate Items</span></a>' +
                 '<a class="btn_green_white_innerfade btn_medium_wide sell_selected" style="display:none"><span>Sell Selected Items</span></a>' +
@@ -2160,7 +2158,7 @@
                 (TF2 ? '<a class="btn_green_white_innerfade btn_medium_wide sell_all_crates"><span>Sell All Crates</span></a>' : '') +
                 '</div>');
 
-            var reloadButton =
+            const reloadButton =
                 $('<a id="inventory_reload_button" class="btn_darkblue_white_innerfade btn_medium_wide reload_inventory" style="margin-right:12px"><span>Reload Inventory</span></a>');
 
             const logo = $('#inventory_logos')[0];
@@ -2173,7 +2171,7 @@
 
             $("#logger").on('scroll',
                 function() {
-                    var hasUserScrolledToBottom =
+                    const hasUserScrolledToBottom =
                         $("#logger").prop('scrollHeight') - $("#logger").prop('clientHeight') <=
                         $("#logger").prop('scrollTop') + 1;
                     userScrolled = !hasUserScrolledToBottom;
@@ -2208,7 +2206,7 @@
                 });
 
             loadAllInventories().then(function() {
-                    var updateInventoryPrices = function() {
+                    const updateInventoryPrices = function() {
                         if (getSettingWithDefault(SETTING_INVENTORY_PRICE_LABELS) == 1) {
                             setInventoryPrices(getInventoryItems());
                         }
@@ -2244,9 +2242,9 @@
 
         // Loads all inventories.
         function loadAllInventories() {
-            var items = [];
+            const items = [];
 
-            for (var child in getActiveInventory().m_rgChildInventories) {
+            for (const child in getActiveInventory().m_rgChildInventories) {
                 items.push(getActiveInventory().m_rgChildInventories[child]);
             }
             items.push(getActiveInventory());
@@ -2256,9 +2254,9 @@
 
         // Gets the inventory items from the active inventory.
         function getInventoryItems() {
-            var arr = [];
+            const arr = [];
 
-            for (var child in getActiveInventory().m_rgChildInventories) {
+            for (const child in getActiveInventory().m_rgChildInventories) {
                 for (const key in getActiveInventory().m_rgChildInventories[child].m_rgAssets) {
                     const value = getActiveInventory().m_rgChildInventories[child].m_rgAssets[key];
                     if (typeof value === 'object') {
@@ -2313,7 +2311,7 @@
             });
         }
 
-        var inventoryPriceQueue = async.queue(function(item, next) {
+        const inventoryPriceQueue = async.queue(function(item, next) {
                 inventoryPriceQueueWorker(item,
                     false,
                     function(success, cached) {
@@ -2330,7 +2328,7 @@
 
                             numberOfFailedRequests++;
 
-                            var delay = numberOfFailedRequests > 1 ?
+                            const delay = numberOfFailedRequests > 1 ?
                                 getRandomInt(30000, 45000) :
                                 getRandomInt(1000, 1500);
 
@@ -2346,8 +2344,8 @@
             1);
 
         function inventoryPriceQueueWorker(item, ignoreErrors, callback) {
-            var failed = 0;
-            var itemName = item.name || item.description.name;
+            let failed = 0;
+            const itemName = item.name || item.description.name;
 
             // Only get the market orders here, the history is not important to visualize the current prices.
             market.getItemOrdersHistogram(item,
@@ -2364,19 +2362,19 @@
                         return callback(false, cachedListings);
                     }
 
-                    var sellPrice = calculateSellPriceBeforeFees(null, histogram, false, 0, 65535);
+                    const sellPrice = calculateSellPriceBeforeFees(null, histogram, false, 0, 65535);
 
-                    var itemPrice = sellPrice == 65535 ?
+                    const itemPrice = sellPrice == 65535 ?
                         '∞' :
                         formatPrice(market.getPriceIncludingFees(sellPrice));
 
-                    var elementName = (currentPage == PAGE_TRADEOFFER ? '#item' : '#') +
+                    const elementName = (currentPage == PAGE_TRADEOFFER ? '#item' : '#') +
                         item.appid +
                         '_' +
                         item.contextid +
                         '_' +
                         item.id;
-                    var element = $(elementName);
+                    const element = $(elementName);
 
                     $('.inventory_item_price', element).remove();
                     element.append('<span class="inventory_item_price price_' + (sellPrice == 65535 ? 0 : market.getPriceIncludingFees(sellPrice)) + '">' + itemPrice + '</span>');
@@ -2389,7 +2387,7 @@
 
     //#region Market
     if (currentPage == PAGE_MARKET || currentPage == PAGE_MARKET_LISTING) {
-        var marketListingsRelistedAssets = [];
+        const marketListingsRelistedAssets = [];
         let marketProgressBar;
 
         function increaseMarketProgressMax() {
@@ -2413,7 +2411,7 @@
             }
         }
 
-        var marketListingsQueue = async.queue(function(listing, next) {
+        const marketListingsQueue = async.queue(function(listing, next) {
             marketListingsQueueWorker(listing,
                 false,
                 function(success, cached) {
@@ -2439,7 +2437,7 @@
 
         // Gets the price, in cents, from a market listing.
         function getPriceFromMarketListing(listing) {
-            var priceLabel = listing.trim().replace('--', '00');
+            let priceLabel = listing.trim().replace('--', '00');
 
             // Fixes RUB, which has a dot at the end.
             if (priceLabel[priceLabel.length - 1] === '.' || priceLabel[priceLabel.length - 1] === ",")
@@ -2454,7 +2452,7 @@
         }
 
         function marketListingsQueueWorker(listing, ignoreErrors, callback) {
-            var asset = unsafeWindow.g_rgAssets[listing.appid][listing.contextid][listing.assetid];
+            const asset = unsafeWindow.g_rgAssets[listing.appid][listing.contextid][listing.assetid];
 
             // An asset:
             //{
@@ -2496,13 +2494,13 @@
             // "owner" : 0
             //}
 
-            var market_hash_name = getMarketHashName(asset);
-            var appid = listing.appid;
+            const market_hash_name = getMarketHashName(asset);
+            const appid = listing.appid;
 
-            var listingUI = $(getListingFromLists(listing.listingid).elm);
+            const listingUI = $(getListingFromLists(listing.listingid).elm);
 
-            var game_name = asset.type;
-            var price = getPriceFromMarketListing($('.market_listing_price > span:nth-child(1) > span:nth-child(1)', listingUI).text());
+            const game_name = asset.type;
+            const price = getPriceFromMarketListing($('.market_listing_price > span:nth-child(1) > span:nth-child(1)', listingUI).text());
 
             if (price <= getSettingWithDefault(SETTING_PRICE_MIN_CHECK_PRICE) * 100) {
                 $('.market_listing_my_price', listingUI).last().css('background', COLOR_PRICE_NOT_CHECKED);
@@ -2512,15 +2510,15 @@
                 return callback(true, true);
             }
 
-            var priceInfo = getPriceInformationFromItem(asset);
-            var item = {
+            const priceInfo = getPriceInformationFromItem(asset);
+            const item = {
                 appid: parseInt(appid),
                 description: {
                     market_hash_name: market_hash_name
                 }
             };
 
-            var failed = 0;
+            let failed = 0;
 
             market.getPriceHistory(item,
                 true,
@@ -2548,7 +2546,7 @@
 
                             // Shows the highest buy order price on the market listings.
                             // The 'histogram.highest_buy_order' is not reliable as Steam is caching this value, but it gives some idea for older titles/listings.
-                            var highestBuyOrderPrice = (histogram == null || histogram.highest_buy_order == null ?
+                            const highestBuyOrderPrice = (histogram == null || histogram.highest_buy_order == null ?
                                 '-' :
                                 formatPrice(histogram.highest_buy_order));
                             $('.market_table_value > span:nth-child(1) > span:nth-child(1) > span:nth-child(1)',
@@ -2565,18 +2563,18 @@
                             // The price without the offset is required to not relist the item constantly when you have the lowest price (i.e., with a negative offset).
                             // The price with the offset should be used for relisting so it will still apply the user-set offset.
 
-                            var sellPriceWithoutOffset = calculateSellPriceBeforeFees(history,
+                            const sellPriceWithoutOffset = calculateSellPriceBeforeFees(history,
                                 histogram,
                                 false,
                                 priceInfo.minPriceBeforeFees,
                                 priceInfo.maxPriceBeforeFees);
-                            var sellPriceWithOffset = calculateSellPriceBeforeFees(history,
+                            const sellPriceWithOffset = calculateSellPriceBeforeFees(history,
                                 histogram,
                                 true,
                                 priceInfo.minPriceBeforeFees,
                                 priceInfo.maxPriceBeforeFees);
 
-                            var sellPriceWithoutOffsetWithFees = market.getPriceIncludingFees(sellPriceWithoutOffset);
+                            const sellPriceWithoutOffsetWithFees = market.getPriceIncludingFees(sellPriceWithoutOffset);
 
                             logConsole('Calculated price: ' +
                                 sellPriceWithoutOffsetWithFees / 100.0 +
@@ -2616,7 +2614,7 @@
                 });
         }
 
-        var marketOverpricedQueue = async.queue(function(item, next) {
+        const marketOverpricedQueue = async.queue(function(item, next) {
                 marketOverpricedQueueWorker(item,
                     false,
                     function(success) {
@@ -2642,7 +2640,7 @@
             1);
 
         function marketOverpricedQueueWorker(item, ignoreErrors, callback) {
-            var listingUI = getListingFromLists(item.listing).elm;
+            const listingUI = getListingFromLists(item.listing).elm;
 
             market.removeListing(item.listing, false,
                 function(errorRemove) {
@@ -2650,17 +2648,17 @@
                         $('.actual_content', listingUI).css('background', COLOR_PENDING);
 
                         setTimeout(function() {
-                            var itemName = $('.market_listing_item_name_link', listingUI).first().attr('href');
-                            var marketHashNameIndex = itemName.lastIndexOf('/') + 1;
-                            var marketHashName = itemName.substring(marketHashNameIndex);
-                            var decodedMarketHashName = decodeURIComponent(itemName.substring(marketHashNameIndex));
-                            var newAssetId = -1;
+                            const itemName = $('.market_listing_item_name_link', listingUI).first().attr('href');
+                            const marketHashNameIndex = itemName.lastIndexOf('/') + 1;
+                            const marketHashName = itemName.substring(marketHashNameIndex);
+                            const decodedMarketHashName = decodeURIComponent(itemName.substring(marketHashNameIndex));
+                            let newAssetId = -1;
 
                             unsafeWindow.RequestFullInventory(market.inventoryUrl + item.appid + "/" + item.contextid + "/", {}, null, null, function(transport) {
                                 if (transport.responseJSON && transport.responseJSON.success) {
-                                    var inventory = transport.responseJSON.rgInventory;
+                                    const inventory = transport.responseJSON.rgInventory;
 
-                                    for (var child in inventory) {
+                                    for (const child in inventory) {
                                         if (marketListingsRelistedAssets.indexOf(child) == -1 && inventory[child].appid == item.appid && (inventory[child].market_hash_name == decodedMarketHashName || inventory[child].market_hash_name == marketHashName)) {
                                             newAssetId = child;
                                             break;
@@ -2707,12 +2705,12 @@
 
         // Queue an overpriced item listing to be relisted.
         function queueOverpricedItemListing(listingid) {
-            var assetInfo = getAssetInfoFromListingId(listingid);
-            var listingUI = $(getListingFromLists(listingid).elm);
-            var price = -1;
+            const assetInfo = getAssetInfoFromListingId(listingid);
+            const listingUI = $(getListingFromLists(listingid).elm);
+            let price = -1;
 
-            var items = $(listingUI).attr('class').split(' ');
-            for (var i in items) {
+            const items = $(listingUI).attr('class').split(' ');
+            for (const i in items) {
                 if (items[i].toString().includes('price_'))
                     price = parseInt(items[i].toString().replace('price_', ''));
             }
@@ -2729,7 +2727,7 @@
             }
         }
 
-        var marketRemoveQueue = async.queue(function(listingid, next) {
+        const marketRemoveQueue = async.queue(function(listingid, next) {
                 marketRemoveQueueWorker(listingid,
                     false,
                     function(success) {
@@ -2755,8 +2753,8 @@
             10);
 
         function marketRemoveQueueWorker(listingid, ignoreErrors, callback) {
-            var listingUI = getListingFromLists(listingid).elm;
-            var isBuyOrder = listingUI.id.startsWith('mybuyorder_');
+            const listingUI = getListingFromLists(listingid).elm;
+            const isBuyOrder = listingUI.id.startsWith('mybuyorder_');
 
             market.removeListing(listingid, isBuyOrder,
                 function(errorRemove) {
@@ -2766,7 +2764,7 @@
                         setTimeout(function() {
                                 removeListingFromLists(listingid);
 
-                                var numberOfListings = marketLists[0].size;
+                                const numberOfListings = marketLists[0].size;
                                 if (numberOfListings > 0) {
                                     $('#my_market_selllistings_number').text((numberOfListings).toString());
 
@@ -2785,7 +2783,7 @@
                 });
         }
 
-        var marketListingsItemsQueue = async.queue(function(listing, next) {
+        const marketListingsItemsQueue = async.queue(function(listing, next) {
                 $.get(window.location.origin + '/market/mylistings?count=100&start=' + listing,
                         function(data) {
                             if (!data || !data.success) {
@@ -2794,10 +2792,10 @@
                                 return;
                             }
 
-                            var myMarketListings = $('#tabContentsMyActiveMarketListingsRows');
+                            const myMarketListings = $('#tabContentsMyActiveMarketListingsRows');
 
-                            var nodes = $.parseHTML(data.results_html);
-                            var rows = $('.market_listing_row', nodes);
+                            const nodes = $.parseHTML(data.results_html);
+                            const rows = $('.market_listing_row', nodes);
                             myMarketListings.append(rows);
 
                             // g_rgAssets
@@ -2816,13 +2814,13 @@
             1);
 
         marketListingsItemsQueue.drain = function() {
-            var myMarketListings = $('#tabContentsMyActiveMarketListingsRows');
+            const myMarketListings = $('#tabContentsMyActiveMarketListingsRows');
             myMarketListings.checkboxes('range', true);
 
             // Sometimes the Steam API is returning duplicate entries (especially during item listing), filter these.
-            var seen = {};
+            const seen = {};
             $('.market_listing_row', myMarketListings).each(function() {
-                var item_id = $(this).attr('id');
+                const item_id = $(this).attr('id');
                 if (seen[item_id])
                     $(this).remove();
                 else
@@ -2871,13 +2869,13 @@
                 sortMarketListings($(this), false, false, true);
             });
 
-            var totalPriceBuyer = 0;
-            var totalPriceSeller = 0;
+            let totalPriceBuyer = 0;
+            let totalPriceSeller = 0;
             // Add the listings to the queue to be checked for the price.
-            for (var i = 0; i < marketLists.length; i++) {
-                for (var j = 0; j < marketLists[i].items.length; j++) {
-                    var listingid = replaceNonNumbers(marketLists[i].items[j].values().market_listing_item_name);
-                    var assetInfo = getAssetInfoFromListingId(listingid);
+            for (let i = 0; i < marketLists.length; i++) {
+                for (let j = 0; j < marketLists[i].items.length; j++) {
+                    const listingid = replaceNonNumbers(marketLists[i].items[j].values().market_listing_item_name);
+                    const assetInfo = getAssetInfoFromListingId(listingid);
 
                     if (!isNaN(assetInfo.priceBuyer))
                         totalPriceBuyer += assetInfo.priceBuyer;
@@ -2900,22 +2898,22 @@
 
         // Gets the asset info (appid/contextid/assetid) based on a listingid.
         function getAssetInfoFromListingId(listingid) {
-            var listing = getListingFromLists(listingid);
+            const listing = getListingFromLists(listingid);
             if (listing == null) {
                 return {};
             }
 
-            var actionButton = $('.item_market_action_button', listing.elm).attr('href');
+            const actionButton = $('.item_market_action_button', listing.elm).attr('href');
             // Market buy orders have no asset info.
             if (actionButton == null || actionButton.toLowerCase().includes('cancelmarketbuyorder'))
                 return {};
 
-            var priceBuyer = getPriceFromMarketListing($('.market_listing_price > span:nth-child(1) > span:nth-child(1)', listing.elm).text());
-            var priceSeller = getPriceFromMarketListing($('.market_listing_price > span:nth-child(1) > span:nth-child(3)', listing.elm).text());
-            var itemIds = actionButton.split(',');
-            var appid = replaceNonNumbers(itemIds[2]);
-            var contextid = replaceNonNumbers(itemIds[3]);
-            var assetid = replaceNonNumbers(itemIds[4]);
+            const priceBuyer = getPriceFromMarketListing($('.market_listing_price > span:nth-child(1) > span:nth-child(1)', listing.elm).text());
+            const priceSeller = getPriceFromMarketListing($('.market_listing_price > span:nth-child(1) > span:nth-child(3)', listing.elm).text());
+            const itemIds = actionButton.split(',');
+            const appid = replaceNonNumbers(itemIds[2]);
+            const contextid = replaceNonNumbers(itemIds[3]);
+            const assetid = replaceNonNumbers(itemIds[4]);
             return {
                 appid,
                 contextid,
@@ -2941,7 +2939,7 @@
                 pageSize = settingDefaults[SETTING_MARKET_PAGE_COUNT];
             }
 
-            var options = {
+            const options = {
                 valueNames: [
                     'market_listing_game_name', 'market_listing_item_name_link', 'market_listing_price',
                     'market_listing_listed_date', {
@@ -2968,7 +2966,7 @@
             };
 
             try {
-                var list = new List(market_listing_see.parent().get(0), options);
+                const list = new List(market_listing_see.parent().get(0), options);
                 list.on('searchComplete', updateMarketSelectAllButton);
                 marketLists.push(list);
             } catch (e) {
@@ -2998,8 +2996,8 @@
 
             if (currentPage == PAGE_MARKET) {
                 // Load the market listings.
-                var currentCount = 0;
-                var totalCount = 0;
+                let currentCount = 0;
+                let totalCount = 0;
 
                 if (typeof unsafeWindow.g_oMyListings !== 'undefined' && unsafeWindow.g_oMyListings != null && unsafeWindow.g_oMyListings.m_cTotalCount != null)
                     totalCount = unsafeWindow.g_oMyListings.m_cTotalCount;
@@ -3044,14 +3042,14 @@
                 });
 
                 $('#tabContentsMyActiveMarketListingsRows > .market_listing_row').each(function() {
-                    var listingid = $(this).attr('id').replace('mylisting_', '').replace('mybuyorder_', '').replace('mbuyorder_', '');
-                    var assetInfo = getAssetInfoFromListingId(listingid);
+                    const listingid = $(this).attr('id').replace('mylisting_', '').replace('mybuyorder_', '').replace('mbuyorder_', '');
+                    const assetInfo = getAssetInfoFromListingId(listingid);
 
                     // There's only one item in the g_rgAssets on a market listing page.
-                    var existingAsset = null;
-                    for (var appid in unsafeWindow.g_rgAssets) {
-                        for (var contextid in unsafeWindow.g_rgAssets[appid]) {
-                            for (var assetid in unsafeWindow.g_rgAssets[appid][contextid]) {
+                    let existingAsset = null;
+                    for (const appid in unsafeWindow.g_rgAssets) {
+                        for (const contextid in unsafeWindow.g_rgAssets[appid]) {
+                            for (const assetid in unsafeWindow.g_rgAssets[appid][contextid]) {
                                 existingAsset = unsafeWindow.g_rgAssets[appid][contextid][assetid];
                                 break;
                             }
@@ -3074,8 +3072,8 @@
         // Update the select/deselect all button on the market.
         function updateMarketSelectAllButton() {
             $('.market_listing_buttons').each(function() {
-                var selectionGroup = $(this).parent().parent();
-                var invert = $('.market_select_item:checked', selectionGroup).length == $('.market_select_item', selectionGroup).length;
+                const selectionGroup = $(this).parent().parent();
+                let invert = $('.market_select_item:checked', selectionGroup).length == $('.market_select_item', selectionGroup).length;
                 if ($('.market_select_item', selectionGroup).length == 0) // If there are no items to select, keep it at Select all.
                     invert = false;
                 $('.select_all > span', selectionGroup).text(invert ? 'Deselect all' : 'Select all');
@@ -3084,14 +3082,14 @@
 
         // Sort the market listings.
         function sortMarketListings(elem, isPrice, isDate, isName) {
-            var list = getListFromContainer(elem);
+            const list = getListFromContainer(elem);
             if (list == null) {
                 console.log('Invalid parameter, could not find a list matching elem.');
                 return;
             }
 
             // Change sort order (asc/desc).
-            var asc = true;
+            let asc = true;
 
             // (Re)set the asc/desc arrows.
             const arrow_down = '🡻';
@@ -3107,7 +3105,7 @@
                 $(this).text($(this).text().replace(' ' + arrow_down, '').replace(' ' + arrow_up, ''));
             })
 
-            var market_listing_selector;
+            let market_listing_selector;
             if (isPrice) {
                 market_listing_selector = $('.market_listing_table_header', elem).children().eq(1);
             } else if (isDate) {
@@ -3135,13 +3133,13 @@
                     }
                 });
             } else if (isDate) {
-                var currentMonth = DateTime.local().month;
+                const currentMonth = luxon.DateTime.local().month;
 
                 list.sort('market_listing_listed_date', {
                     order: asc ? "asc" : "desc",
                     sortFunction: function(a, b) {
-                        var firstDate = DateTime.fromString((a.values().market_listing_listed_date).trim(), 'd MMM');
-                        var secondDate = DateTime.fromString((b.values().market_listing_listed_date).trim(), 'd MMM');
+                        let firstDate = luxon.DateTime.fromString((a.values().market_listing_listed_date).trim(), 'd MMM');
+                        let secondDate = luxon.DateTime.fromString((b.values().market_listing_listed_date).trim(), 'd MMM');
 
                         if (firstDate == null || secondDate == null) {
                             return 0;
@@ -3163,16 +3161,16 @@
                 list.sort('market_listing_price', {
                     order: asc ? "asc" : "desc",
                     sortFunction: function(a, b) {
-                        var listingPriceA = $(a.values().market_listing_price).text();
+                        let listingPriceA = $(a.values().market_listing_price).text();
                         listingPriceA = listingPriceA.substr(0, listingPriceA.indexOf('('));
                         listingPriceA = listingPriceA.replace('--', '00');
 
-                        var listingPriceB = $(b.values().market_listing_price).text();
+                        let listingPriceB = $(b.values().market_listing_price).text();
                         listingPriceB = listingPriceB.substr(0, listingPriceB.indexOf('('));
                         listingPriceB = listingPriceB.replace('--', '00');
 
-                        var firstPrice = parseInt(replaceNonNumbers(listingPriceA));
-                        var secondPrice = parseInt(replaceNonNumbers(listingPriceB));
+                        const firstPrice = parseInt(replaceNonNumbers(listingPriceA));
+                        const secondPrice = parseInt(replaceNonNumbers(listingPriceB));
 
                         return firstPrice - secondPrice;
                     }
@@ -3181,7 +3179,7 @@
         }
 
         function getListFromContainer(group) {
-            for (var i = 0; i < marketLists.length; i++) {
+            for (let i = 0; i < marketLists.length; i++) {
                 if (group.attr('id') == $(marketLists[i].listContainer).attr('id'))
                     return marketLists[i];
             }
@@ -3189,8 +3187,8 @@
 
         function getListingFromLists(listingid) {
             // Sometimes listing ids are contained in multiple lists (?), use the last one available as this is the one we're most likely interested in.
-            for (var i = marketLists.length - 1; i >= 0; i--) {
-                var values = marketLists[i].get("market_listing_item_name", 'mylisting_' + listingid + '_name');
+            for (let i = marketLists.length - 1; i >= 0; i--) {
+                let values = marketLists[i].get("market_listing_item_name", 'mylisting_' + listingid + '_name');
                 if (values != null && values.length > 0) {
                     return values[0];
                 }
@@ -3205,7 +3203,7 @@
         }
 
         function removeListingFromLists(listingid) {
-            for (var i = 0; i < marketLists.length; i++) {
+            for (let i = 0; i < marketLists.length; i++) {
                 marketLists[i].remove("market_listing_item_name", 'mylisting_' + listingid + '_name');
                 marketLists[i].remove("market_listing_item_name", 'mbuyorder_' + listingid + '_name');
             }
@@ -3270,20 +3268,20 @@
                 if ($(this).hasClass('market_listing_edit_buttons') || $(this).hasClass('item_market_action_button_contents'))
                     return;
 
-                var isPrice = $('.market_listing_table_header', $(this).parent().parent()).children().eq(1).text() == $(this).text();
-                var isDate = $('.market_listing_table_header', $(this).parent().parent()).children().eq(2).text() == $(this).text();
-                var isName = $('.market_listing_table_header', $(this).parent().parent()).children().eq(3).text() == $(this).text();
+                const isPrice = $('.market_listing_table_header', $(this).parent().parent()).children().eq(1).text() == $(this).text();
+                const isDate = $('.market_listing_table_header', $(this).parent().parent()).children().eq(2).text() == $(this).text();
+                const isName = $('.market_listing_table_header', $(this).parent().parent()).children().eq(3).text() == $(this).text();
 
                 sortMarketListings($(this).parent().parent(), isPrice, isDate, isName);
             });
 
             $('.select_all').on('click', '*', function() {
-                var selectionGroup = $(this).parent().parent().parent().parent();
-                var marketList = getListFromContainer(selectionGroup);
+                const selectionGroup = $(this).parent().parent().parent().parent();
+                const marketList = getListFromContainer(selectionGroup);
 
-                var invert = $('.market_select_item:checked', selectionGroup).length == $('.market_select_item', selectionGroup).length;
+                const invert = $('.market_select_item:checked', selectionGroup).length == $('.market_select_item', selectionGroup).length;
 
-                for (var i = 0; i < marketList.matchingItems.length; i++) {
+                for (let i = 0; i < marketList.matchingItems.length; i++) {
                     $('.market_select_item', marketList.matchingItems[i].elm).prop('checked', !invert);
                 }
 
@@ -3291,11 +3289,11 @@
             });
 
             $('.select_five_from_page').on('click', '*', function() {
-                var selectionGroup = $(this).parent().parent().parent().parent();
-                var marketList = getListFromContainer(selectionGroup);
+                const selectionGroup = $(this).parent().parent().parent().parent();
+                const marketList = getListFromContainer(selectionGroup);
 
-                var count = 0
-                for (var i = 0; i < marketList.matchingItems.length; i++) {
+                let count = 0
+                for (let i = 0; i < marketList.matchingItems.length; i++) {
                     if(count == 5){
                         break;
                     }
@@ -3309,11 +3307,11 @@
             });
 
             $('.select_twentyfive_from_page').on('click', '*', function() {
-                var selectionGroup = $(this).parent().parent().parent().parent();
-                var marketList = getListFromContainer(selectionGroup);
+                const selectionGroup = $(this).parent().parent().parent().parent();
+                const marketList = getListFromContainer(selectionGroup);
 
-                var count = 0
-                for (var i = 0; i < marketList.matchingItems.length; i++) {
+                let count = 0
+                for (let i = 0; i < marketList.matchingItems.length; i++) {
                     if(count == 25){
                         break;
                     }
@@ -3333,10 +3331,10 @@
             });
 
             $('.select_overpriced').on('click', '*', function() {
-                var selectionGroup = $(this).parent().parent().parent().parent();
-                var marketList = getListFromContainer(selectionGroup);
+                const selectionGroup = $(this).parent().parent().parent().parent();
+                const marketList = getListFromContainer(selectionGroup);
 
-                for (var i = 0; i < marketList.matchingItems.length; i++) {
+                for (let i = 0; i < marketList.matchingItems.length; i++) {
                     if ($(marketList.matchingItems[i].elm).hasClass('overpriced')) {
                         $('.market_select_item', marketList.matchingItems[i].elm).prop('checked', true);
                     }
@@ -3351,12 +3349,12 @@
             });
 
             $('.remove_selected').on('click', '*', function() {
-                var selectionGroup = $(this).parent().parent().parent().parent();
-                var marketList = getListFromContainer(selectionGroup);
+                const selectionGroup = $(this).parent().parent().parent().parent();
+                const marketList = getListFromContainer(selectionGroup);
 
-                for (var i = 0; i < marketList.matchingItems.length; i++) {
+                for (let i = 0; i < marketList.matchingItems.length; i++) {
                     if ($('.market_select_item', $(marketList.matchingItems[i].elm)).prop('checked')) {
-                        var listingid = replaceNonNumbers(marketList.matchingItems[i].values().market_listing_item_name);
+                        const listingid = replaceNonNumbers(marketList.matchingItems[i].values().market_listing_item_name);
                         marketRemoveQueue.push(listingid);
                         increaseMarketProgressMax();
                     }
@@ -3368,24 +3366,24 @@
             });
 
             $('.relist_overpriced').on('click', '*', function() {
-                var selectionGroup = $(this).parent().parent().parent().parent();
-                var marketList = getListFromContainer(selectionGroup);
+                const selectionGroup = $(this).parent().parent().parent().parent();
+                const marketList = getListFromContainer(selectionGroup);
 
-                for (var i = 0; i < marketList.matchingItems.length; i++) {
+                for (let i = 0; i < marketList.matchingItems.length; i++) {
                     if ($(marketList.matchingItems[i].elm).hasClass('overpriced')) {
-                        var listingid = replaceNonNumbers(marketList.matchingItems[i].values().market_listing_item_name);
+                        const listingid = replaceNonNumbers(marketList.matchingItems[i].values().market_listing_item_name);
                         queueOverpricedItemListing(listingid);
                     }
                 }
             });
 
             $('.relist_selected').on('click', '*', function() {
-                var selectionGroup = $(this).parent().parent().parent().parent();
-                var marketList = getListFromContainer(selectionGroup);
+                const selectionGroup = $(this).parent().parent().parent().parent();
+                const marketList = getListFromContainer(selectionGroup);
 
-                for (var i = 0; i < marketList.matchingItems.length; i++) {
+                for (let i = 0; i < marketList.matchingItems.length; i++) {
                     if ($(marketList.matchingItems[i].elm) && $('.market_select_item', $(marketList.matchingItems[i].elm)).prop('checked')) {
-                        var listingid = replaceNonNumbers(marketList.matchingItems[i].values().market_listing_item_name);
+                        const listingid = replaceNonNumbers(marketList.matchingItems[i].values().market_listing_item_name);
                         queueOverpricedItemListing(listingid);
                     }
                 }
@@ -3404,9 +3402,9 @@
     if (currentPage == PAGE_TRADEOFFER) {
         // Gets the trade offer's inventory items from the active inventory.
         function getTradeOfferInventoryItems() { // eslint-disable-line no-unused-vars
-            var arr = [];
+            const arr = [];
 
-            for (var child in getActiveInventory().rgChildInventories) {
+            for (const child in getActiveInventory().rgChildInventories) {
                 for (const key in getActiveInventory().rgChildInventories[child].rgInventory) {
                     const value = getActiveInventory().rgChildInventories[child].rgInventory[key];
                     if (typeof value === 'object') {
@@ -3435,21 +3433,21 @@
         }
 
         function sumTradeOfferAssets(assets, user) { // eslint-disable-line no-unused-vars
-            var total = {};
-            var totalPrice = 0;
+            const total = {};
+            let totalPrice = 0;
             for (let i = 0; i < assets.length; i++) {
-                var rgItem = user.findAsset(assets[i].appid, assets[i].contextid, assets[i].assetid);
+                const rgItem = user.findAsset(assets[i].appid, assets[i].contextid, assets[i].assetid);
 
-                var text = '';
+                let text = '';
                 if (rgItem != null) {
                     if (rgItem.element) {
-                        var inventoryPriceElements = $('.inventory_item_price', rgItem.element);
+                        const inventoryPriceElements = $('.inventory_item_price', rgItem.element);
                         if (inventoryPriceElements.length) {
-                            var firstPriceElement = inventoryPriceElements[0];
-                            var classes = $(firstPriceElement).attr('class').split(' ');
-                            for (var c in classes) {
+                            const firstPriceElement = inventoryPriceElements[0];
+                            const classes = $(firstPriceElement).attr('class').split(' ');
+                            for (const c in classes) {
                                 if (classes[c].toString().includes('price_')) {
-                                    var price = parseInt(classes[c].toString().replace('price_', ''));
+                                    const price = parseInt(classes[c].toString().replace('price_', ''));
                                     totalPrice += price;
                                 }
                             }
@@ -3458,9 +3456,9 @@
                     }
 
                     if (rgItem.original_amount != null && rgItem.amount != null) {
-                        var originalAmount = parseInt(rgItem.original_amount);
-                        var currentAmount = parseInt(rgItem.amount);
-                        var usedAmount = originalAmount - currentAmount;
+                        const originalAmount = parseInt(rgItem.original_amount);
+                        const currentAmount = parseInt(rgItem.amount);
+                        const usedAmount = originalAmount - currentAmount;
                         text += usedAmount.toString() + 'x ';
                     }
 
@@ -3478,16 +3476,16 @@
                     total[text] = 1;
             }
 
-            var sortable = [];
-            for (var item in total)
+            const sortable = [];
+            for (const item in total)
                 sortable.push([item, total[item]])
 
             sortable.sort(function(a, b) {
                 return a[1] - b[1];
             }).reverse();
 
-            var totalText = '<strong>Number of unique items: ' + sortable.length + ', worth ' + formatPrice(totalPrice) + '<br/><br/></strong>';
-            var totalNumOfItems = 0;
+            let totalText = '<strong>Number of unique items: ' + sortable.length + ', worth ' + formatPrice(totalPrice) + '<br/><br/></strong>';
+            let totalNumOfItems = 0;
             for (let i = 0; i < sortable.length; i++) {
                 totalText += sortable[i][1] + 'x ' + sortable[i][0] + '<br/>';
                 totalNumOfItems += sortable[i][1];
@@ -3499,7 +3497,7 @@
     }
 
 
-    var lastTradeOfferSum = 0;
+    let lastTradeOfferSum = 0;
 
     function hasLoadedAllTradeOfferItems() {
         for (let i = 0; i < unsafeWindow.g_rgCurrentTradeStatus.them.assets.length; i++) {
@@ -3517,14 +3515,14 @@
     }
 
     function initializeTradeOfferUI() {
-        var updateInventoryPrices = function() {
+        const updateInventoryPrices = function() {
             if (getSettingWithDefault(SETTING_TRADEOFFER_PRICE_LABELS) == 1) {
                 setInventoryPrices(getTradeOfferInventoryItems());
             }
         };
 
-        var updateInventoryPricesInTrade = function() {
-            var items = [];
+        const updateInventoryPricesInTrade = function() {
+            const items = [];
             for (let i = 0; i < unsafeWindow.g_rgCurrentTradeStatus.them.assets.length; i++) {
                 const asset = unsafeWindow.UserThem.findAsset(unsafeWindow.g_rgCurrentTradeStatus.them.assets[i].appid, unsafeWindow.g_rgCurrentTradeStatus.them.assets[i].contextid, unsafeWindow.g_rgCurrentTradeStatus.them.assets[i].assetid);
                 items.push(asset);
@@ -3540,7 +3538,7 @@
             if (!hasLoadedAllTradeOfferItems())
                 return;
 
-            var currentTradeOfferSum = unsafeWindow.g_rgCurrentTradeStatus.me.assets.length + unsafeWindow.g_rgCurrentTradeStatus.them.assets.length;
+            const currentTradeOfferSum = unsafeWindow.g_rgCurrentTradeStatus.me.assets.length + unsafeWindow.g_rgCurrentTradeStatus.them.assets.length;
             if (lastTradeOfferSum != currentTradeOfferSum) {
                 updateInventoryPricesInTrade();
             }
@@ -3550,8 +3548,8 @@
             $('#trade_offer_your_sum').remove();
             $('#trade_offer_their_sum').remove();
 
-            var your_sum = sumTradeOfferAssets(unsafeWindow.g_rgCurrentTradeStatus.me.assets, unsafeWindow.UserYou);
-            var their_sum = sumTradeOfferAssets(unsafeWindow.g_rgCurrentTradeStatus.them.assets, unsafeWindow.UserThem);
+            const your_sum = sumTradeOfferAssets(unsafeWindow.g_rgCurrentTradeStatus.me.assets, unsafeWindow.UserYou);
+            const their_sum = sumTradeOfferAssets(unsafeWindow.g_rgCurrentTradeStatus.them.assets, unsafeWindow.UserThem);
 
             $('div.offerheader:nth-child(1) > div:nth-child(3)').append('<div class="trade_offer_sum" id="trade_offer_your_sum">' + your_sum + '</div>');
             $('div.offerheader:nth-child(3) > div:nth-child(3)').append('<div class="trade_offer_sum" id="trade_offer_their_sum">' + their_sum + '</div>');
@@ -3582,7 +3580,7 @@
 
         $('.select_all').on('click', '*', function() {
             $('.inventory_ctn:visible > .inventory_page:visible > .itemHolder:visible').delayedEach(250, function(i, it) {
-                var item = it.rgItem;
+                const item = it.rgItem;
                 if (item.is_stackable)
                     return;
 
@@ -3597,7 +3595,7 @@
 
     //#region Settings
     function openSettings() {
-        var price_options = $('<div id="price_options">' +
+        const price_options = $('<div id="price_options">' +
             '<div style="margin-bottom:6px;">' +
             'Calculate prices as the:&nbsp;<select class="price_option_input" style="background-color: black;color: white;border: transparent;" id="' + SETTING_PRICE_ALGORITHM + '">' +
             '<option value="1"' + (getSettingWithDefault(SETTING_PRICE_ALGORITHM) == 1 ? 'selected="selected"' : '') + '>Maximum of the average history and lowest sell listing</option>' +
@@ -3737,24 +3735,19 @@
     });
 
     function injectCss(css) {
-        var head, style;
-        head = document.getElementsByTagName('head')[0];
+        const head = document.getElementsByTagName('head')[0];
         if (!head) {
             return;
         }
-        style = document.createElement('style');
+        const style = document.createElement('style');
         style.type = 'text/css';
         style.innerHTML = css;
         head.appendChild(style);
     }
 
     $.fn.delayedEach = function(timeout, callback, continuous) {
-        var $els, iterator;
-
-        $els = this;
-        iterator = function(index) {
-            var cur;
-
+        const $els = this;
+        const iterator = function(index) {
             if (index >= $els.length) {
                 if (!continuous) {
                     return;
@@ -3762,7 +3755,7 @@
                 index = 0;
             }
 
-            cur = $els[index];
+            const cur = $els[index];
             callback.call(cur, index, cur);
 
             setTimeout(function() {
diff --git a/eslint.config.mjs b/eslint.config.mjs
index 5a40f81..792a9f2 100644
--- a/eslint.config.mjs
+++ b/eslint.config.mjs
@@ -3,9 +3,10 @@ import pluginJs from "@eslint/js";
 import userscripts from 'eslint-plugin-userscripts';
 
 export default [
-  {languageOptions: { globals: globals.browser }},
-  pluginJs.configs.recommended,
   {
+    languageOptions: {
+      globals: globals.browser
+    },
     files: ['*.user.js'],
     plugins: {
       userscripts: {
@@ -13,7 +14,10 @@ export default [
       }
     },
     rules: {
-      ...userscripts.configs.recommended.rules
+      ...userscripts.configs.recommended.rules,
+      ...pluginJs.configs.recommended.rules,
+      "no-var": "error",
+      "prefer-const": "error",
     },
     settings: {
       userscriptVersions: {

From b5a1d19b7d8cc42e1884580b576bf9ac1a7de52b Mon Sep 17 00:00:00 2001
From: Pavel Djundik <xPaw@users.noreply.github.com>
Date: Thu, 18 Jul 2024 14:28:14 +0300
Subject: [PATCH 4/5] Enable stylistic rules

---
 code.user.js      | 1641 ++++++++++++++++++++++++++-------------------
 eslint.config.mjs |   30 +-
 package.json      |    2 +
 3 files changed, 964 insertions(+), 709 deletions(-)

diff --git a/code.user.js b/code.user.js
index 1816ca5..0b493c2 100644
--- a/code.user.js
+++ b/code.user.js
@@ -65,35 +65,37 @@
     const enableConsoleLog = false;
 
     const country = typeof unsafeWindow.g_strCountryCode !== 'undefined' ? unsafeWindow.g_strCountryCode : undefined;
-    const isLoggedIn = typeof unsafeWindow.g_rgWalletInfo !== 'undefined' && unsafeWindow.g_rgWalletInfo != null || (typeof unsafeWindow.g_bLoggedIn !== 'undefined' && unsafeWindow.g_bLoggedIn);
-
-    const currentPage = window.location.href.includes('.com/market') ?
-        (window.location.href.includes('market/listings') ?
-            PAGE_MARKET_LISTING :
-            PAGE_MARKET) :
-        (window.location.href.includes('.com/tradeoffer') ?
-            PAGE_TRADEOFFER :
-            PAGE_INVENTORY);
-
-    const market = new SteamMarket(unsafeWindow.g_rgAppContextData,
+    const isLoggedIn = typeof unsafeWindow.g_rgWalletInfo !== 'undefined' && unsafeWindow.g_rgWalletInfo != null || typeof unsafeWindow.g_bLoggedIn !== 'undefined' && unsafeWindow.g_bLoggedIn;
+
+    const currentPage = window.location.href.includes('.com/market')
+        ? window.location.href.includes('market/listings')
+            ? PAGE_MARKET_LISTING
+            : PAGE_MARKET
+        : window.location.href.includes('.com/tradeoffer')
+            ? PAGE_TRADEOFFER
+            : PAGE_INVENTORY;
+
+    const market = new SteamMarket(
+        unsafeWindow.g_rgAppContextData,
         getInventoryUrl(),
-        isLoggedIn ? unsafeWindow.g_rgWalletInfo : undefined);
+        isLoggedIn ? unsafeWindow.g_rgWalletInfo : undefined
+    );
 
     const currencyId =
         isLoggedIn &&
         market != null &&
         market.walletInfo != null &&
-        market.walletInfo.wallet_currency != null ?
-        market.walletInfo.wallet_currency :
-        3;
+        market.walletInfo.wallet_currency != null
+            ? market.walletInfo.wallet_currency
+            : 3;
 
     const currencyCountry =
         isLoggedIn &&
         market != null &&
         market.walletInfo != null &&
-        market.walletInfo.wallet_country != null ?
-        market.walletInfo.wallet_country :
-        'US';
+        market.walletInfo.wallet_country != null
+            ? market.walletInfo.wallet_country
+            : 'US';
 
     const currencyCode = unsafeWindow.GetCurrencyCode(currencyId);
 
@@ -102,8 +104,9 @@
         this.inventoryUrl = inventoryUrl;
         this.walletInfo = walletInfo;
         this.inventoryUrlBase = inventoryUrl.replace('/inventory/json', '');
-        if (!this.inventoryUrlBase.endsWith('/'))
+        if (!this.inventoryUrlBase.endsWith('/')) {
             this.inventoryUrlBase += '/';
+        }
     }
 
 
@@ -117,7 +120,7 @@
         if (unsafeWindow.g_strProfileURL) {
             profileUrl = unsafeWindow.g_strProfileURL;
         } else {
-            const avatar = document.querySelector( '#global_actions a.user_avatar' );
+            const avatar = document.querySelector('#global_actions a.user_avatar');
 
             if (avatar) {
                 profileUrl = avatar.href;
@@ -190,8 +193,9 @@
     // For this reason, a rolling cache is used.
     if (getSessionStorageItem('SESSION') == null || noCache) {
         let lastCache = getSettingWithDefault(SETTING_LAST_CACHE);
-        if (lastCache > 5)
+        if (lastCache > 5) {
             lastCache = 0;
+        }
 
         setSetting(SETTING_LAST_CACHE, lastCache + 1);
 
@@ -211,7 +215,7 @@
         try {
             return localStorage.getItem(name);
         } catch (e) {
-            logConsole('Failed to get local storage item ' + name + ', ' + e + '.')
+            logConsole('Failed to get local storage item ' + name + ', ' + e + '.');
             return null;
         }
     }
@@ -221,7 +225,7 @@
             localStorage.setItem(name, value);
             return true;
         } catch (e) {
-            logConsole('Failed to set local storage item ' + name + ', ' + e + '.')
+            logConsole('Failed to set local storage item ' + name + ', ' + e + '.');
             return false;
         }
     }
@@ -230,7 +234,7 @@
         try {
             return sessionStorage.getItem(name);
         } catch (e) {
-            logConsole('Failed to get session storage item ' + name + ', ' + e + '.')
+            logConsole('Failed to get session storage item ' + name + ', ' + e + '.');
             return null;
         }
     }
@@ -240,7 +244,7 @@
             sessionStorage.setItem(name, value);
             return true;
         } catch (e) {
-            logConsole('Failed to set session storage item ' + name + ', ' + e + '.')
+            logConsole('Failed to set session storage item ' + name + ', ' + e + '.');
             return false;
         }
     }
@@ -265,12 +269,12 @@
             maxPrice = getSettingWithDefault(SETTING_MAX_MISC_PRICE);
             minPrice = getSettingWithDefault(SETTING_MIN_MISC_PRICE);
         } else {
-            maxPrice = isFoilTradingCard ?
-                getSettingWithDefault(SETTING_MAX_FOIL_PRICE) :
-                getSettingWithDefault(SETTING_MAX_NORMAL_PRICE);
-            minPrice = isFoilTradingCard ?
-                getSettingWithDefault(SETTING_MIN_FOIL_PRICE) :
-                getSettingWithDefault(SETTING_MIN_NORMAL_PRICE);
+            maxPrice = isFoilTradingCard
+                ? getSettingWithDefault(SETTING_MAX_FOIL_PRICE)
+                : getSettingWithDefault(SETTING_MAX_NORMAL_PRICE);
+            minPrice = isFoilTradingCard
+                ? getSettingWithDefault(SETTING_MIN_FOIL_PRICE)
+                : getSettingWithDefault(SETTING_MIN_NORMAL_PRICE);
         }
 
         maxPrice = maxPrice * 100.0;
@@ -294,7 +298,7 @@
 
         if (history != null) {
             // Highest average price in the last xx hours.
-            const timeAgo = Date.now() - (getSettingWithDefault(SETTING_PRICE_HISTORY_HOURS) * 60 * 60 * 1000);
+            const timeAgo = Date.now() - getSettingWithDefault(SETTING_PRICE_HISTORY_HOURS) * 60 * 60 * 1000;
 
             history.forEach(function(historyItem) {
                 const d = new Date(historyItem[0]);
@@ -305,8 +309,9 @@
             });
         }
 
-        if (total == 0)
+        if (total == 0) {
             return 0;
+        }
 
         highest = Math.floor(highest / total);
         return market.getPriceBeforeFees(highest);
@@ -315,10 +320,11 @@
     // Calculates the listing price, before the fee.
     function calculateListingPriceBeforeFees(histogram) {
         if (typeof histogram === 'undefined' ||
-            histogram == null ||
-            histogram.lowest_sell_order == null ||
-            histogram.sell_order_graph == null)
+          histogram == null ||
+          histogram.lowest_sell_order == null ||
+          histogram.sell_order_graph == null) {
             return 0;
+        }
 
         let listingPrice = market.getPriceBeforeFees(histogram.lowest_sell_order);
 
@@ -331,7 +337,7 @@
                 const numberOfListingsLowest = histogram.sell_order_graph[0][1];
                 const numberOfListings2ndLowest = histogram.sell_order_graph[1][1];
 
-                const percentageLower = (100 * (numberOfListingsLowest / numberOfListings2ndLowest));
+                const percentageLower = 100 * (numberOfListingsLowest / numberOfListings2ndLowest);
 
                 // The percentage should change based on the quantity (for example, 1200 listings vs 5, or 1 vs 25).
                 if (numberOfListings2ndLowest >= 1000 && percentageLower <= 5) {
@@ -354,8 +360,9 @@
     }
 
     function calculateBuyOrderPriceBeforeFees(histogram) {
-        if (typeof histogram === 'undefined')
+        if (typeof histogram === 'undefined') {
             return 0;
+        }
 
         return market.getPriceBeforeFees(histogram.highest_buy_order);
     }
@@ -391,7 +398,7 @@
 
         // Apply the offset to the calculated price, but only if the price wasn't changed to the max (as otherwise it's impossible to list for this price).
         if (!changedToMax && applyOffset) {
-            calculatedPrice = calculatedPrice + (getSettingWithDefault(SETTING_PRICE_OFFSET) * 100);
+            calculatedPrice = calculatedPrice + getSettingWithDefault(SETTING_PRICE_OFFSET) * 100;
         }
 
 
@@ -402,8 +409,9 @@
         // In case there's a buy order higher than the calculated price.
         if (typeof histogram !== 'undefined' && histogram != null && histogram.highest_buy_order != null) {
             const buyOrderPrice = market.getPriceBeforeFees(histogram.highest_buy_order);
-            if (buyOrderPrice > calculatedPrice)
+            if (buyOrderPrice > calculatedPrice) {
                 calculatedPrice = buyOrderPrice;
+            }
         }
 
         return calculatedPrice;
@@ -416,12 +424,12 @@
     }
 
     function getNumberOfDigits(x) {
-        return (Math.log10((x ^ (x >> 31)) - (x >> 31)) | 0) + 1;
+        return (Math.log10((x ^ x >> 31) - (x >> 31)) | 0) + 1;
     }
 
     function padLeftZero(str, max) {
         str = str.toString();
-        return str.length < max ? padLeftZero("0" + str, max) : str;
+        return str.length < max ? padLeftZero('0' + str, max) : str;
     }
 
     function replaceNonNumbers(str) {
@@ -433,11 +441,11 @@
 
     // Sell an item with a price in cents.
     // Price is before fees.
-    SteamMarket.prototype.sellItem = function(item, price, callback /*err, data*/ ) {
+    SteamMarket.prototype.sellItem = function(item, price, callback /*err, data*/) {
         const sessionId = readCookie('sessionid');
         const itemId = item.assetid || item.id;
         $.ajax({
-            type: "POST",
+            type: 'POST',
             url: window.location.origin + '/market/sellitem/',
             data: {
                 sessionid: sessionId,
@@ -463,21 +471,21 @@
 
     // Removes an item.
     // Item is the unique item id.
-    SteamMarket.prototype.removeListing = function(item, isBuyOrder, callback /*err, data*/ ) {
+    SteamMarket.prototype.removeListing = function(item, isBuyOrder, callback /*err, data*/) {
         const sessionId = readCookie('sessionid');
 
         if (isBuyOrder) {
             $.ajax({
-                type: "POST",
+                type: 'POST',
                 url: window.location.origin + '/market/cancelbuyorder/',
                 data: {
                     sessionid: sessionId,
                     buy_orderid: item
                 },
-                success: function (data) {
+                success: function(data) {
                     callback(ERROR_SUCCESS, data);
                 },
-                error: function () {
+                error: function() {
                     return callback(ERROR_FAILED);
                 },
                 dataType: 'json'
@@ -486,7 +494,7 @@
         }
 
         $.ajax({
-            type: "POST",
+            type: 'POST',
             url: window.location.origin + '/market/removelisting/' + item,
             data: {
                 sessionid: sessionId
@@ -520,18 +528,20 @@
             if (cache) {
                 const storage_hash = 'pricehistory_' + appid + '+' + market_name;
 
-                storageSession.getItem(storage_hash)
-                    .then(function(value) {
-                        if (value != null)
+                storageSession.getItem(storage_hash).
+                    then(function(value) {
+                        if (value != null) {
                             callback(ERROR_SUCCESS, value, true);
-                        else
+                        } else {
                             market.getCurrentPriceHistory(appid, market_name, callback);
-                    })
-                    .catch(function() {
+                        }
+                    }).
+                    catch(function() {
                         market.getCurrentPriceHistory(appid, market_name, callback);
                     });
-            } else
+            } else {
                 market.getCurrentPriceHistory(appid, market_name, callback);
+            }
         } catch {
             return callback(ERROR_FAILED);
         }
@@ -546,7 +556,7 @@
                     continue;
                 }
 
-                const rgMatches = action.link.match( /GetGooValue\( *'%contextid%', *'%assetid%', *'?(?<appid>[0-9]+)'?/ );
+                const rgMatches = action.link.match(/GetGooValue\( *'%contextid%', *'%assetid%', *'?(?<appid>[0-9]+)'?/);
 
                 if (!rgMatches) {
                     continue;
@@ -558,7 +568,7 @@
 
             const sessionId = readCookie('sessionid');
             $.ajax({
-                type: "GET",
+                type: 'GET',
                 url: this.inventoryUrlBase + 'ajaxgetgoovalue/',
                 data: {
                     sessionid: sessionId,
@@ -584,7 +594,7 @@
         //appid = 535690
         //assetid = 4830605461
         //contextid = 6
-    }
+    };
 
 
     // Grinds the item into gems.
@@ -592,7 +602,7 @@
         try {
             const sessionId = readCookie('sessionid');
             $.ajax({
-                type: "POST",
+                type: 'POST',
                 url: this.inventoryUrlBase + 'ajaxgrindintogoo/',
                 data: {
                     sessionid: sessionId,
@@ -619,7 +629,7 @@
         //contextid = 6
         //goo_value_expected = 10
         //http://steamcommunity.com/my/ajaxgrindintogoo/
-    }
+    };
 
 
     // Unpacks the booster pack.
@@ -627,7 +637,7 @@
         try {
             const sessionId = readCookie('sessionid');
             $.ajax({
-                type: "POST",
+                type: 'POST',
                 url: this.inventoryUrlBase + 'ajaxunpackbooster/',
                 data: {
                     sessionid: sessionId,
@@ -650,37 +660,39 @@
         //appid = 535690
         //communityitemid = 4830605461
         //http://steamcommunity.com/my/ajaxunpackbooster/
-    }
+    };
 
     // Get the current price history for an item.
     SteamMarket.prototype.getCurrentPriceHistory = function(appid, market_name, callback) {
         const url = window.location.origin +
-            '/market/pricehistory/?appid=' +
-            appid +
-            '&market_hash_name=' +
-            market_name;
-
-        $.get(url,
-                function(data) {
-                    if (!data || !data.success || !data.prices) {
-                        callback(ERROR_DATA);
-                        return;
-                    }
+          '/market/pricehistory/?appid=' +
+          appid +
+          '&market_hash_name=' +
+          market_name;
+
+        $.get(
+            url,
+            function(data) {
+                if (!data || !data.success || !data.prices) {
+                    callback(ERROR_DATA);
+                    return;
+                }
 
-                    // Multiply prices so they're in pennies.
-                    for (let i = 0; i < data.prices.length; i++) {
-                        data.prices[i][1] *= 100;
-                        data.prices[i][2] = parseInt(data.prices[i][2]);
-                    }
+                // Multiply prices so they're in pennies.
+                for (let i = 0; i < data.prices.length; i++) {
+                    data.prices[i][1] *= 100;
+                    data.prices[i][2] = parseInt(data.prices[i][2]);
+                }
 
-                    // Store the price history in the session storage.
-                    const storage_hash = 'pricehistory_' + appid + '+' + market_name;
-                    storageSession.setItem(storage_hash, data.prices);
+                // Store the price history in the session storage.
+                const storage_hash = 'pricehistory_' + appid + '+' + market_name;
+                storageSession.setItem(storage_hash, data.prices);
 
-                    callback(ERROR_SUCCESS, data.prices, false);
-                },
-                'json')
-            .fail(function(data) {
+                callback(ERROR_SUCCESS, data.prices, false);
+            },
+            'json'
+        ).
+            fail(function(data) {
                 if (!data || !data.responseJSON) {
                     return callback(ERROR_FAILED);
                 }
@@ -690,7 +702,7 @@
                 }
                 return callback(ERROR_FAILED);
             });
-    }
+    };
 
     // Get the item name id from a market item.
     //
@@ -706,41 +718,44 @@
             const appid = item.appid;
             const storage_hash = 'itemnameid_' + appid + '+' + market_name;
 
-            storagePersistent.getItem(storage_hash)
-                .then(function(value) {
-                    if (value != null)
+            storagePersistent.getItem(storage_hash).
+                then(function(value) {
+                    if (value != null) {
                         callback(ERROR_SUCCESS, value);
-                    else
+                    } else {
                         return market.getCurrentMarketItemNameId(appid, market_name, callback);
-                })
-                .catch(function() {
+                    }
+                }).
+                catch(function() {
                     return market.getCurrentMarketItemNameId(appid, market_name, callback);
                 });
         } catch {
             return callback(ERROR_FAILED);
         }
-    }
+    };
 
     // Get the item name id from a market item.
     SteamMarket.prototype.getCurrentMarketItemNameId = function(appid, market_name, callback) {
         const url = window.location.origin + '/market/listings/' + appid + '/' + market_name;
-        $.get(url,
-                function(page) {
-                    const matches = /Market_LoadOrderSpread\( (\d+) \);/.exec(page);
-                    if (matches == null) {
-                        callback(ERROR_DATA);
-                        return;
-                    }
+        $.get(
+            url,
+            function(page) {
+                const matches = (/Market_LoadOrderSpread\( (\d+) \);/).exec(page);
+                if (matches == null) {
+                    callback(ERROR_DATA);
+                    return;
+                }
 
-                    const item_nameid = matches[1];
+                const item_nameid = matches[1];
 
-                    // Store the item name id in the persistent storage.
-                    const storage_hash = 'itemnameid_' + appid + '+' + market_name;
-                    storagePersistent.setItem(storage_hash, item_nameid);
+                // Store the item name id in the persistent storage.
+                const storage_hash = 'itemnameid_' + appid + '+' + market_name;
+                storagePersistent.setItem(storage_hash, item_nameid);
 
-                    callback(ERROR_SUCCESS, item_nameid);
-                })
-            .fail(function(e) {
+                callback(ERROR_SUCCESS, item_nameid);
+            }
+        ).
+            fail(function(e) {
                 return callback(ERROR_FAILED, e.status);
             });
     };
@@ -775,15 +790,15 @@
 
             if (cache) {
                 const storage_hash = 'itemordershistogram_' + appid + '+' + market_name;
-                storageSession.getItem(storage_hash)
-                    .then(function(value) {
-                        if (value != null)
+                storageSession.getItem(storage_hash).
+                    then(function(value) {
+                        if (value != null) {
                             callback(ERROR_SUCCESS, value, true);
-                        else {
+                        } else {
                             market.getCurrentItemOrdersHistogram(item, market_name, callback);
                         }
-                    })
-                    .catch(function() {
+                    }).
+                    catch(function() {
                         market.getCurrentItemOrdersHistogram(item, market_name, callback);
                     });
             } else {
@@ -797,36 +812,41 @@
 
     // Get the sales listings for this item in the market, with more information.
     SteamMarket.prototype.getCurrentItemOrdersHistogram = function(item, market_name, callback) {
-        market.getMarketItemNameId(item,
+        market.getMarketItemNameId(
+            item,
             function(error, item_nameid) {
                 if (error) {
-                    if (item_nameid != 429) // 429 = Too many requests made.
+                    if (item_nameid != 429) { // 429 = Too many requests made.
                         callback(ERROR_DATA);
-                    else
+                    } else {
                         callback(ERROR_FAILED);
+                    }
                     return;
                 }
                 const url = window.location.origin +
-                    '/market/itemordershistogram?country=' +
-                    country +
-                    '&language=english&currency=' +
-                    currencyId +
-                    '&item_nameid=' +
-                    item_nameid +
-                    '&two_factor=0';
-
-                $.get(url,
-                        function(histogram) {
-                            // Store the histogram in the session storage.
-                            const storage_hash = 'itemordershistogram_' + item.appid + '+' + market_name;
-                            storageSession.setItem(storage_hash, histogram);
-
-                            callback(ERROR_SUCCESS, histogram, false);
-                        })
-                    .fail(function() {
+                  '/market/itemordershistogram?country=' +
+                  country +
+                  '&language=english&currency=' +
+                  currencyId +
+                  '&item_nameid=' +
+                  item_nameid +
+                  '&two_factor=0';
+
+                $.get(
+                    url,
+                    function(histogram) {
+                        // Store the histogram in the session storage.
+                        const storage_hash = 'itemordershistogram_' + item.appid + '+' + market_name;
+                        storageSession.setItem(storage_hash, histogram);
+
+                        callback(ERROR_SUCCESS, histogram, false);
+                    }
+                ).
+                    fail(function() {
                         return callback(ERROR_FAILED, null);
                     });
-            });
+            }
+        );
     };
 
     // Calculate the price before fees (seller price) from the buyer price
@@ -834,17 +854,19 @@
         let publisherFee = -1;
 
         if (item != null) {
-            if (item.market_fee != null)
+            if (item.market_fee != null) {
                 publisherFee = item.market_fee;
-            else if (item.description != null && item.description.market_fee != null)
+            } else if (item.description != null && item.description.market_fee != null) {
                 publisherFee = item.description.market_fee;
+            }
         }
 
         if (publisherFee == -1) {
-            if (this.walletInfo != null)
+            if (this.walletInfo != null) {
                 publisherFee = this.walletInfo['wallet_publisher_fee_percent_default'];
-            else
+            } else {
                 publisherFee = 0.10;
+            }
         }
 
         price = Math.round(price);
@@ -856,16 +878,18 @@
     SteamMarket.prototype.getPriceIncludingFees = function(price, item) {
         let publisherFee = -1;
         if (item != null) {
-            if (item.market_fee != null)
+            if (item.market_fee != null) {
                 publisherFee = item.market_fee;
-            else if (item.description != null && item.description.market_fee != null)
+            } else if (item.description != null && item.description.market_fee != null) {
                 publisherFee = item.description.market_fee;
+            }
         }
         if (publisherFee == -1) {
-            if (this.walletInfo != null)
+            if (this.walletInfo != null) {
                 publisherFee = this.walletInfo['wallet_publisher_fee_percent_default'];
-            else
+            } else {
                 publisherFee = 0.10;
+            }
         }
 
         price = Math.round(price);
@@ -879,134 +903,155 @@
         let previousName = '';
         while (previousName != name) {
             previousName = name;
-            name = name.replace('?', '%3F')
-                .replace('#', '%23')
-                .replace('	', '%09');
+            name = name.replace('?', '%3F').
+                replace('#', '%23').
+                replace('	', '%09');
         }
         return name;
     }
 
     //#region Steam Market / Inventory helpers
     function getMarketHashName(item) {
-        if (item == null)
+        if (item == null) {
             return null;
+        }
 
-        if (item.description != null && item.description.market_hash_name != null)
+        if (item.description != null && item.description.market_hash_name != null) {
             return escapeURI(item.description.market_hash_name);
+        }
 
-        if (item.description != null && item.description.name != null)
+        if (item.description != null && item.description.name != null) {
             return escapeURI(item.description.name);
+        }
 
-        if (item.market_hash_name != null)
+        if (item.market_hash_name != null) {
             return escapeURI(item.market_hash_name);
+        }
 
-        if (item.name != null)
+        if (item.name != null) {
             return escapeURI(item.name);
+        }
 
         return null;
     }
 
     function getIsCrate(item) {
-        if (item == null)
+        if (item == null) {
             return false;
+        }
         // This is available on the inventory page.
-        const tags = item.tags != null ?
-            item.tags :
-            (item.description != null && item.description.tags != null ?
-                item.description.tags :
-                null);
+        const tags = item.tags != null
+            ? item.tags
+            : item.description != null && item.description.tags != null
+                ? item.description.tags
+                : null;
         if (tags != null) {
             let isTaggedAsCrate = false;
-            tags.forEach(function (arrayItem) {
-                if (arrayItem.category == 'Type')
-                    if (arrayItem.internal_name == 'Supply Crate')
+            tags.forEach(function(arrayItem) {
+                if (arrayItem.category == 'Type') {
+                    if (arrayItem.internal_name == 'Supply Crate') {
                         isTaggedAsCrate = true;
+                    }
+                }
             });
-            if (isTaggedAsCrate)
+            if (isTaggedAsCrate) {
                 return true;
+            }
         }
     }
 
     function getIsTradingCard(item) {
-        if (item == null)
+        if (item == null) {
             return false;
+        }
 
         // This is available on the inventory page.
-        const tags = item.tags != null ?
-            item.tags :
-            (item.description != null && item.description.tags != null ?
-                item.description.tags :
-                null);
+        const tags = item.tags != null
+            ? item.tags
+            : item.description != null && item.description.tags != null
+                ? item.description.tags
+                : null;
         if (tags != null) {
             let isTaggedAsTradingCard = false;
             tags.forEach(function(arrayItem) {
-                if (arrayItem.category == 'item_class')
-                    if (arrayItem.internal_name == 'item_class_2') // trading card.
+                if (arrayItem.category == 'item_class') {
+                    if (arrayItem.internal_name == 'item_class_2') { // trading card.
                         isTaggedAsTradingCard = true;
+                    }
+                }
             });
-            if (isTaggedAsTradingCard)
+            if (isTaggedAsTradingCard) {
                 return true;
+            }
         }
 
         // This is available on the market page.
         if (item.owner_actions != null) {
             for (let i = 0; i < item.owner_actions.length; i++) {
-                if (item.owner_actions[i].link == null)
+                if (item.owner_actions[i].link == null) {
                     continue;
+                }
 
                 // Cards include a link to the gamecard page.
                 // For example: "http://steamcommunity.com/my/gamecards/503820/".
-                if (item.owner_actions[i].link.toString().toLowerCase().includes('gamecards'))
+                if (item.owner_actions[i].link.toString().toLowerCase().includes('gamecards')) {
                     return true;
+                }
             }
         }
 
         // A fallback for the market page (only works with language on English).
-        if (item.type != null && item.type.toLowerCase().includes('trading card'))
+        if (item.type != null && item.type.toLowerCase().includes('trading card')) {
             return true;
+        }
 
         return false;
     }
 
     function getIsFoilTradingCard(item) {
-        if (!getIsTradingCard(item))
+        if (!getIsTradingCard(item)) {
             return false;
+        }
 
         // This is available on the inventory page.
-        const tags = item.tags != null ?
-            item.tags :
-            (item.description != null && item.description.tags != null ?
-                item.description.tags :
-                null);
+        const tags = item.tags != null
+            ? item.tags
+            : item.description != null && item.description.tags != null
+                ? item.description.tags
+                : null;
         if (tags != null) {
             let isTaggedAsFoilTradingCard = false;
             tags.forEach(function(arrayItem) {
-                if (arrayItem.category == 'cardborder')
-                    if (arrayItem.internal_name == 'cardborder_1') // foil border.
-                        isTaggedAsFoilTradingCard = true;
+                if (arrayItem.category == 'cardborder' && arrayItem.internal_name == 'cardborder_1') { // foil border.
+                    isTaggedAsFoilTradingCard = true;
+                }
             });
-            if (isTaggedAsFoilTradingCard)
+            if (isTaggedAsFoilTradingCard) {
                 return true;
+            }
         }
 
         // This is available on the market page.
         if (item.owner_actions != null) {
             for (let i = 0; i < item.owner_actions.length; i++) {
-                if (item.owner_actions[i].link == null)
+                if (item.owner_actions[i].link == null) {
                     continue;
+                }
 
                 // Cards include a link to the gamecard page.
                 // The border parameter specifies the foil cards.
                 // For example: "http://steamcommunity.com/my/gamecards/503820/?border=1".
                 if (item.owner_actions[i].link.toString().toLowerCase().includes('gamecards') &&
-                    item.owner_actions[i].link.toString().toLowerCase().includes('border'))
+                  item.owner_actions[i].link.toString().toLowerCase().includes('border')) {
                     return true;
+                }
             }
         }
 
         // A fallback for the market page (only works with language on English).
-        if (item.type != null && item.type.toLowerCase().includes('foil trading card'))
+        if (item.type != null && item.type.toLowerCase().includes('foil trading card')) {
             return true;
+        }
 
         return false;
     }
@@ -1018,25 +1063,28 @@
             };
         }
 
-        publisherFee = (publisherFee == null) ? 0 : publisherFee;
+        publisherFee = publisherFee == null ? 0 : publisherFee;
         // Since CalculateFeeAmount has a Math.floor, we could be off a cent or two. Let's check:
         let iterations = 0; // shouldn't be needed, but included to be sure nothing unforseen causes us to get stuck
         let nEstimatedAmountOfWalletFundsReceivedByOtherParty =
             parseInt((amount - parseInt(walletInfo['wallet_fee_base'])) /
-                (parseFloat(walletInfo['wallet_fee_percent']) + parseFloat(publisherFee) + 1));
+            (parseFloat(walletInfo['wallet_fee_percent']) + parseFloat(publisherFee) + 1));
         let bEverUndershot = false;
-        let fees = CalculateAmountToSendForDesiredReceivedAmount(nEstimatedAmountOfWalletFundsReceivedByOtherParty,
+        let fees = CalculateAmountToSendForDesiredReceivedAmount(
+            nEstimatedAmountOfWalletFundsReceivedByOtherParty,
             publisherFee,
-            walletInfo);
+            walletInfo
+        );
         while (fees.amount != amount && iterations < 10) {
             if (fees.amount > amount) {
                 if (bEverUndershot) {
                     fees = CalculateAmountToSendForDesiredReceivedAmount(
                         nEstimatedAmountOfWalletFundsReceivedByOtherParty - 1,
                         publisherFee,
-                        walletInfo);
-                    fees.steam_fee += (amount - fees.amount);
-                    fees.fees += (amount - fees.amount);
+                        walletInfo
+                    );
+                    fees.steam_fee += amount - fees.amount;
+                    fees.fees += amount - fees.amount;
                     fees.amount = amount;
                     break;
                 } else {
@@ -1046,9 +1094,11 @@
                 bEverUndershot = true;
                 nEstimatedAmountOfWalletFundsReceivedByOtherParty++;
             }
-            fees = CalculateAmountToSendForDesiredReceivedAmount(nEstimatedAmountOfWalletFundsReceivedByOtherParty,
+            fees = CalculateAmountToSendForDesiredReceivedAmount(
+                nEstimatedAmountOfWalletFundsReceivedByOtherParty,
                 publisherFee,
-                walletInfo);
+                walletInfo
+            );
             iterations++;
         }
         // fees.amount should equal the passed in amount
@@ -1057,11 +1107,13 @@
 
     // Clamps cur between min and max (inclusive).
     function clamp(cur, min, max) {
-        if (cur < min)
+        if (cur < min) {
             cur = min;
+        }
 
-        if (cur > max)
+        if (cur > max) {
             cur = max;
+        }
 
         return cur;
     }
@@ -1074,10 +1126,12 @@
             };
         }
 
-        publisherFee = (publisherFee == null) ? 0 : publisherFee;
-        const nSteamFee = parseInt(Math.floor(Math.max(receivedAmount * parseFloat(walletInfo['wallet_fee_percent']),
-                walletInfo['wallet_fee_minimum']) +
-            parseInt(walletInfo['wallet_fee_base'])));
+        publisherFee = publisherFee == null ? 0 : publisherFee;
+        const nSteamFee = parseInt(Math.floor(Math.max(
+            receivedAmount * parseFloat(walletInfo['wallet_fee_percent']),
+            walletInfo['wallet_fee_minimum']
+        ) +
+        parseInt(walletInfo['wallet_fee_base'])));
         const nPublisherFee = parseInt(Math.floor(publisherFee > 0 ? Math.max(receivedAmount * publisherFee, 1) : 0));
         const nAmountToSend = receivedAmount + nSteamFee + nPublisherFee;
         return {
@@ -1089,23 +1143,25 @@
     }
 
     function readCookie(name) {
-        const nameEQ = name + "=";
+        const nameEQ = name + '=';
         const ca = document.cookie.split(';');
         for (let i = 0; i < ca.length; i++) {
             let c = ca[i];
-            while (c.charAt(0) == ' ')
+            while (c.charAt(0) == ' ') {
                 c = c.substring(1, c.length);
-            if (c.indexOf(nameEQ) == 0)
+            }
+            if (c.indexOf(nameEQ) == 0) {
                 return decodeURIComponent(c.substring(nameEQ.length, c.length));
+            }
         }
         return null;
     }
 
     function isRetryMessage(message) {
         const messageList = [
-            "You cannot sell any items until your previous action completes.",
-            "There was a problem listing your item. Refresh the page and try again.",
-            "We were unable to contact the game's item server. The game's item server may be down or Steam may be experiencing temporary connectivity issues. Your listing has not been created. Refresh the page and try again."
+            'You cannot sell any items until your previous action completes.',
+            'There was a problem listing your item. Refresh the page and try again.',
+            'We were unable to contact the game\'s item server. The game\'s item server may be down or Steam may be experiencing temporary connectivity issues. Your listing has not been created. Refresh the page and try again.'
         ];
 
         return messageList.indexOf(message) !== -1;
@@ -1119,7 +1175,7 @@
 
     function updateScroll() {
         if (!userScrolled) {
-            const element = document.getElementById("logger");
+            const element = document.getElementById('logger');
             element.scrollTop = element.scrollHeight;
         }
     }
@@ -1156,18 +1212,20 @@
 
             if (totalPriceWithFeesOnMarket > 0) {
                 totals.innerHTML += '<div><strong>Total listed for ' +
-                    formatPrice(totalPriceWithFeesOnMarket) +
-                    ', you will receive ' +
-                    formatPrice(totalPriceWithoutFeesOnMarket) +
-                    '.</strong></div>';
+                formatPrice(totalPriceWithFeesOnMarket) +
+                ', you will receive ' +
+                formatPrice(totalPriceWithoutFeesOnMarket) +
+                '.</strong></div>';
             }
             if (totalScrap > 0) {
                 totals.innerHTML += '<div><strong>Total scrap ' + totalScrap + '.</strong></div>';
             }
         }
 
-        const sellQueue = async.queue(function(task, next) {
-                market.sellItem(task.item,
+        const sellQueue = async.queue(
+            function(task, next) {
+                market.sellItem(
+                    task.item,
                     task.sellPrice,
                     function(err, data) {
                         totalNumberOfProcessedQueueItems++;
@@ -1179,27 +1237,27 @@
 
                         if (!err) {
                             logDOM(padLeft +
-                                ' - ' +
-                                itemName +
-                                ' listed for ' +
-                                formatPrice(market.getPriceIncludingFees(task.sellPrice)) +
-                                ', you will receive ' +
-                                formatPrice(task.sellPrice) +
-                                '.');
+                            ' - ' +
+                            itemName +
+                            ' listed for ' +
+                            formatPrice(market.getPriceIncludingFees(task.sellPrice)) +
+                            ', you will receive ' +
+                            formatPrice(task.sellPrice) +
+                            '.');
 
-                            $('#' + task.item.appid + '_' + task.item.contextid + '_' + itemId)
-                                .css('background', COLOR_SUCCESS);
+                            $('#' + task.item.appid + '_' + task.item.contextid + '_' + itemId).
+                                css('background', COLOR_SUCCESS);
 
                             totalPriceWithoutFeesOnMarket += task.sellPrice;
                             totalPriceWithFeesOnMarket += market.getPriceIncludingFees(task.sellPrice);
                             updateTotals();
                         } else if (data != null && isRetryMessage(data.message)) {
                             logDOM(padLeft +
-                                ' - ' +
-                                itemName +
-                                ' retrying listing because ' +
-                                data.message[0].toLowerCase() +
-                                data.message.slice(1));
+                            ' - ' +
+                            itemName +
+                            ' retrying listing because ' +
+                            data.message[0].toLowerCase() +
+                            data.message.slice(1));
 
                             totalNumberOfProcessedQueueItems--;
                             sellQueue.unshift(task);
@@ -1211,29 +1269,33 @@
                         } else {
                             if (data != null && data.responseJSON != null && data.responseJSON.message != null) {
                                 logDOM(padLeft +
-                                    ' - ' +
-                                    itemName +
-                                    ' not added to market because ' +
-                                    data.responseJSON.message[0].toLowerCase() +
-                                    data.responseJSON.message.slice(1));
-                            } else
+                                ' - ' +
+                                itemName +
+                                ' not added to market because ' +
+                                data.responseJSON.message[0].toLowerCase() +
+                                data.responseJSON.message.slice(1));
+                            } else {
                                 logDOM(padLeft + ' - ' + itemName + ' not added to market.');
+                            }
 
-                            $('#' + task.item.appid + '_' + task.item.contextid + '_' + itemId)
-                                .css('background', COLOR_ERROR);
+                            $('#' + task.item.appid + '_' + task.item.contextid + '_' + itemId).
+                                css('background', COLOR_ERROR);
                         }
 
                         next();
-                    });
+                    }
+                );
             },
-            1);
+            1
+        );
 
         sellQueue.drain = function() {
             onQueueDrain();
-        }
+        };
 
         function sellAllItems() {
-            loadAllInventories().then(function() {
+            loadAllInventories().then(
+                function() {
                     const items = getInventoryItems();
                     const filteredItems = [];
 
@@ -1249,81 +1311,88 @@
                 },
                 function() {
                     logDOM('Could not retrieve the inventory...');
-                });
+                }
+            );
         }
 
         function sellAllDuplicateItems() {
-            loadAllInventories().then(function () {
-                const items = getInventoryItems();
-                const marketableItems = [];
-                let filteredItems = [];
+            loadAllInventories().then(
+                function() {
+                    const items = getInventoryItems();
+                    const marketableItems = [];
+                    let filteredItems = [];
 
-                items.forEach(function (item) {
-                    if (!item.marketable) {
-                        return;
-                    }
+                    items.forEach(function(item) {
+                        if (!item.marketable) {
+                            return;
+                        }
 
-                    marketableItems.push(item);
-                });
+                        marketableItems.push(item);
+                    });
 
-                filteredItems = marketableItems.filter((e, i) => marketableItems.map(m => m.classid).indexOf(e.classid) !== i);
+                    filteredItems = marketableItems.filter((e, i) => marketableItems.map((m) => m.classid).indexOf(e.classid) !== i);
 
-                sellItems(filteredItems);
-            },
-            function () {
-                logDOM('Could not retrieve the inventory...');
-            });
+                    sellItems(filteredItems);
+                },
+                function() {
+                    logDOM('Could not retrieve the inventory...');
+                }
+            );
         }
 
         function gemAllDuplicateItems() {
-            loadAllInventories().then(function () {
-                const items = getInventoryItems();
-                let filteredItems = [];
-                let numberOfQueuedItems = 0;
+            loadAllInventories().then(
+                function() {
+                    const items = getInventoryItems();
+                    let filteredItems = [];
+                    let numberOfQueuedItems = 0;
 
-                filteredItems = items.filter((e, i) => items.map(m => m.classid).indexOf(e.classid) !== i);
+                    filteredItems = items.filter((e, i) => items.map((m) => m.classid).indexOf(e.classid) !== i);
 
-                filteredItems.forEach(function (item) {
-                    if (item.queued != null) {
-                        return;
-                    }
+                    filteredItems.forEach(function(item) {
+                        if (item.queued != null) {
+                            return;
+                        }
 
-                    if (item.owner_actions == null) {
-                        return;
-                    }
+                        if (item.owner_actions == null) {
+                            return;
+                        }
 
-                    let canTurnIntoGems = false;
-                    for (const owner_action in item.owner_actions) {
-                        if (item.owner_actions[owner_action].link != null && item.owner_actions[owner_action].link.includes('GetGooValue')) {
-                            canTurnIntoGems = true;
+                        let canTurnIntoGems = false;
+                        for (const owner_action in item.owner_actions) {
+                            if (item.owner_actions[owner_action].link != null && item.owner_actions[owner_action].link.includes('GetGooValue')) {
+                                canTurnIntoGems = true;
+                            }
                         }
-                    }
 
-                    if (!canTurnIntoGems)
-                        return;
+                        if (!canTurnIntoGems) {
+                            return;
+                        }
 
-                    item.queued = true;
-                    scrapQueue.push(item);
-                    numberOfQueuedItems++;
-                });
+                        item.queued = true;
+                        scrapQueue.push(item);
+                        numberOfQueuedItems++;
+                    });
 
-                if (numberOfQueuedItems > 0) {
-                    totalNumberOfQueuedItems += numberOfQueuedItems;
+                    if (numberOfQueuedItems > 0) {
+                        totalNumberOfQueuedItems += numberOfQueuedItems;
 
-                    $('#inventory_items_spinner').remove();
-                    $('#inventory_sell_buttons').append('<div id="inventory_items_spinner">' +
+                        $('#inventory_items_spinner').remove();
+                        $('#inventory_sell_buttons').append('<div id="inventory_items_spinner">' +
                         spinnerBlock +
                         '<div style="text-align:center">Processing ' + numberOfQueuedItems + ' items</div>' +
                         '</div>');
+                    }
+                },
+                function() {
+                    logDOM('Could not retrieve the inventory...');
                 }
-            },
-            function () {
-                logDOM('Could not retrieve the inventory...');
-            });
+            );
         }
 
         function sellAllCards() {
-            loadAllInventories().then(function() {
+            loadAllInventories().then(
+                function() {
                     const items = getInventoryItems();
                     const filteredItems = [];
 
@@ -1339,14 +1408,16 @@
                 },
                 function() {
                     logDOM('Could not retrieve the inventory...');
-                });
+                }
+            );
         }
 
         function sellAllCrates() {
-            loadAllInventories().then(function () {
+            loadAllInventories().then(
+                function() {
                     const items = getInventoryItems();
                     const filteredItems = [];
-                    items.forEach(function (item) {
+                    items.forEach(function(item) {
                         if (!getIsCrate(item) || !item.marketable) {
                             return;
                         }
@@ -1357,7 +1428,8 @@
                 },
                 function() {
                     logDOM('Could not retrieve the inventory...');
-                });
+                }
+            );
         }
 
         const scrapQueue = async.queue(function(item, next) {
@@ -1367,12 +1439,13 @@
                         next();
                     }, 250);
                 } else {
-                    const delay = numberOfFailedRequests > 1 ?
-                        getRandomInt(30000, 45000) :
-                        getRandomInt(1000, 1500);
+                    const delay = numberOfFailedRequests > 1
+                        ? getRandomInt(30000, 45000)
+                        : getRandomInt(1000, 1500);
 
-                    if (numberOfFailedRequests > 3)
+                    if (numberOfFailedRequests > 3) {
                         numberOfFailedRequests = 0;
+                    }
 
                     setTimeout(function() {
                         next();
@@ -1383,13 +1456,14 @@
 
         scrapQueue.drain = function() {
             onQueueDrain();
-        }
+        };
 
         function scrapQueueWorker(item, callback) {
             const itemName = item.name || item.description.name;
             const itemId = item.assetid || item.id;
 
-            market.getGooValue(item,
+            market.getGooValue(
+                item,
                 function(err, goo) {
                     totalNumberOfProcessedQueueItems++;
 
@@ -1406,7 +1480,8 @@
 
                     item.goo_value_expected = parseInt(goo.goo_value, 10);
 
-                    market.grindIntoGoo(item,
+                    market.grindIntoGoo(
+                        item,
                         function(err) {
                             if (err != ERROR_SUCCESS) {
                                 logConsole('Failed to turn item into gems for ' + itemName);
@@ -1416,7 +1491,7 @@
                                 return callback(false);
                             }
 
-                            logConsole('============================')
+                            logConsole('============================');
                             logConsole(itemName);
                             logConsole('Turned into ' + goo.goo_value + ' gems');
                             logDOM(padLeft + ' - ' + itemName + ' turned into ' + item.goo_value_expected + ' gems.');
@@ -1426,8 +1501,10 @@
                             updateTotals();
 
                             callback(true);
-                        });
-                });
+                        }
+                    );
+                }
+            );
         }
 
         const boosterQueue = async.queue(function(item, next) {
@@ -1437,12 +1514,13 @@
                         next();
                     }, 250);
                 } else {
-                    const delay = numberOfFailedRequests > 1 ?
-                        getRandomInt(30000, 45000) :
-                        getRandomInt(1000, 1500);
+                    const delay = numberOfFailedRequests > 1
+                        ? getRandomInt(30000, 45000)
+                        : getRandomInt(1000, 1500);
 
-                    if (numberOfFailedRequests > 3)
+                    if (numberOfFailedRequests > 3) {
                         numberOfFailedRequests = 0;
+                    }
 
                     setTimeout(function() {
                         next();
@@ -1453,13 +1531,14 @@
 
         boosterQueue.drain = function() {
             onQueueDrain();
-        }
+        };
 
         function boosterQueueWorker(item, callback) {
             const itemName = item.name || item.description.name;
             const itemId = item.assetid || item.id;
 
-            market.unpackBoosterPack(item,
+            market.unpackBoosterPack(
+                item,
                 function(err) {
                     totalNumberOfProcessedQueueItems++;
 
@@ -1478,7 +1557,8 @@
                     $('#' + item.appid + '_' + item.contextid + '_' + itemId).css('background', COLOR_SUCCESS);
 
                     callback(true);
-                });
+                }
+            );
         }
 
 
@@ -1507,8 +1587,9 @@
                         }
                     }
 
-                    if (!canTurnIntoGems)
+                    if (!canTurnIntoGems) {
                         return;
+                    }
 
                     const itemId = item.assetid || item.id;
                     if (ids.indexOf(itemId) !== -1) {
@@ -1523,9 +1604,9 @@
 
                     $('#inventory_items_spinner').remove();
                     $('#inventory_sell_buttons').append('<div id="inventory_items_spinner">' +
-                        spinnerBlock +
-                        '<div style="text-align:center">Processing ' + numberOfQueuedItems + ' items</div>' +
-                        '</div>');
+                    spinnerBlock +
+                    '<div style="text-align:center">Processing ' + numberOfQueuedItems + ' items</div>' +
+                    '</div>');
                 }
             }, function() {
                 logDOM('Could not retrieve the inventory...');
@@ -1557,8 +1638,9 @@
                         }
                     }
 
-                    if (!canOpenBooster)
+                    if (!canOpenBooster) {
                         return;
+                    }
 
                     const itemId = item.assetid || item.id;
                     if (ids.indexOf(itemId) !== -1) {
@@ -1573,9 +1655,9 @@
 
                     $('#inventory_items_spinner').remove();
                     $('#inventory_sell_buttons').append('<div id="inventory_items_spinner">' +
-                        spinnerBlock +
-                        '<div style="text-align:center">Processing ' + numberOfQueuedItems + ' items</div>' +
-                        '</div>');
+                    spinnerBlock +
+                    '<div style="text-align:center">Processing ' + numberOfQueuedItems + ' items</div>' +
+                    '</div>');
                 }
             }, function() {
                 logDOM('Could not retrieve the inventory...');
@@ -1595,8 +1677,9 @@
             let hasInvalidItem = false;
 
             items.forEach(function(item) {
-                if (item.contextid != contextid || item.commodity == false)
+                if (item.contextid != contextid || item.commodity == false) {
                     hasInvalidItem = true;
+                }
             });
 
             return !hasInvalidItem;
@@ -1613,7 +1696,7 @@
                 const itemsWithQty = {};
 
                 items.forEach(function(item) {
-                   itemsWithQty[item.market_hash_name] = itemsWithQty[item.market_hash_name] + 1 || 1;
+                    itemsWithQty[item.market_hash_name] = itemsWithQty[item.market_hash_name] + 1 || 1;
                 });
 
                 let itemsString = '';
@@ -1660,40 +1743,47 @@
 
                 $('#inventory_items_spinner').remove();
                 $('#inventory_sell_buttons').append('<div id="inventory_items_spinner">' +
-                    spinnerBlock +
-                    '<div style="text-align:center">Processing ' + numberOfQueuedItems + ' items</div>' +
-                    '</div>');
+                spinnerBlock +
+                '<div style="text-align:center">Processing ' + numberOfQueuedItems + ' items</div>' +
+                '</div>');
             }
         }
 
         const itemQueue = async.queue(function(item, next) {
-            itemQueueWorker(item,
+            itemQueueWorker(
+                item,
                 item.ignoreErrors,
                 function(success, cached) {
                     if (success) {
-                        setTimeout(function() {
+                        setTimeout(
+                            function() {
                                 next();
                             },
-                            cached ? 0 : getRandomInt(1000, 1500));
+                            cached ? 0 : getRandomInt(1000, 1500)
+                        );
                     } else {
                         if (!item.ignoreErrors) {
                             item.ignoreErrors = true;
                             itemQueue.push(item);
                         }
 
-                        const delay = numberOfFailedRequests > 1 ?
-                            getRandomInt(30000, 45000) :
-                            getRandomInt(1000, 1500);
+                        const delay = numberOfFailedRequests > 1
+                            ? getRandomInt(30000, 45000)
+                            : getRandomInt(1000, 1500);
 
-                        if (numberOfFailedRequests > 3)
+                        if (numberOfFailedRequests > 3) {
                             numberOfFailedRequests = 0;
+                        }
 
-                        setTimeout(function() {
+                        setTimeout(
+                            function() {
                                 next();
                             },
-                            cached ? 0 : delay);
+                            cached ? 0 : delay
+                        );
                     }
-                });
+                }
+            );
         }, 1);
 
         function itemQueueWorker(item, ignoreErrors, callback) {
@@ -1702,45 +1792,51 @@
             let failed = 0;
             const itemName = item.name || item.description.name;
 
-            market.getPriceHistory(item,
+            market.getPriceHistory(
+                item,
                 true,
                 function(err, history, cachedHistory) {
                     if (err) {
                         logConsole('Failed to get price history for ' + itemName);
 
-                        if (err == ERROR_FAILED)
+                        if (err == ERROR_FAILED) {
                             failed += 1;
+                        }
                     }
 
-                    market.getItemOrdersHistogram(item,
+                    market.getItemOrdersHistogram(
+                        item,
                         true,
                         function(err, histogram, cachedListings) {
                             if (err) {
                                 logConsole('Failed to get orders histogram for ' + itemName);
 
-                                if (err == ERROR_FAILED)
+                                if (err == ERROR_FAILED) {
                                     failed += 1;
+                                }
                             }
 
                             if (failed > 0 && !ignoreErrors) {
                                 return callback(false, cachedHistory && cachedListings);
                             }
 
-                            logConsole('============================')
+                            logConsole('============================');
                             logConsole(itemName);
 
-                            const sellPrice = calculateSellPriceBeforeFees(history,
+                            const sellPrice = calculateSellPriceBeforeFees(
+                                history,
                                 histogram,
                                 true,
                                 priceInfo.minPriceBeforeFees,
-                                priceInfo.maxPriceBeforeFees);
+                                priceInfo.maxPriceBeforeFees
+                            );
 
 
                             logConsole('Sell price: ' +
-                                sellPrice / 100.0 +
-                                ' (' +
-                                market.getPriceIncludingFees(sellPrice) / 100.0 +
-                                ')');
+                            sellPrice / 100.0 +
+                            ' (' +
+                            market.getPriceIncludingFees(sellPrice) / 100.0 +
+                            ')');
 
                             sellQueue.push({
                                 item: item,
@@ -1748,28 +1844,33 @@
                             });
 
                             return callback(true, cachedHistory && cachedListings);
-                        });
-                });
+                        }
+                    );
+                }
+            );
         }
 
         // Initialize the inventory UI.
-        function initializeInventoryUI() { // eslint-disable-line no-unused-vars
+        function initializeInventoryUI() {  
             const isOwnInventory = unsafeWindow.g_ActiveUser.strSteamId == unsafeWindow.g_steamID;
             let previousSelection = -1; // To store the index of the previous selection.
             updateInventoryUI(isOwnInventory);
 
-            $('.games_list_tabs').on('click',
+            $('.games_list_tabs').on(
+                'click',
                 '*',
                 function() {
                     updateInventoryUI(isOwnInventory);
-                });
+                }
+            );
 
             // Ignore selection on other user's inventories.
-            if (!isOwnInventory)
+            if (!isOwnInventory) {
                 return;
+            }
 
             // Steam adds 'display:none' to items while searching. These should not be selected while using shift/ctrl.
-            const filter = ".itemHolder:not([style*=none])";
+            const filter = '.itemHolder:not([style*=none])';
             $('#inventories').selectable({
                 filter: filter,
                 selecting: function(e, ui) {
@@ -1778,9 +1879,11 @@
 
                     // If shift key was pressed and there is previous - select them all.
                     if (e.shiftKey && previousSelection > -1) {
-                        $(ui.selecting.tagName, e.target)
-                            .slice(Math.min(previousSelection, selectedIndex),
-                                1 + Math.max(previousSelection, selectedIndex)).each(function() {
+                        $(ui.selecting.tagName, e.target).
+                            slice(
+                                Math.min(previousSelection, selectedIndex),
+                                1 + Math.max(previousSelection, selectedIndex)
+                            ).each(function() {
                                 if ($(this).is(filter)) {
                                     $(this).addClass('ui-selected');
                                 }
@@ -1803,7 +1906,7 @@
 
                     updateButtons();
                     updateInventorySelection(rgItem);
-                }
+                };
             }
         }
 
@@ -1869,8 +1972,9 @@
                         }
                     }
 
-                    if (!canTurnIntoGems)
+                    if (!canTurnIntoGems) {
                         return;
+                    }
 
                     const itemId = item.assetid || item.id;
                     if (ids.indexOf(itemId) !== -1) {
@@ -1900,8 +2004,9 @@
                         }
                     }
 
-                    if (!canOpenBooster)
+                    if (!canOpenBooster) {
                         return;
+                    }
 
                     const itemId = item.assetid || item.id;
                     if (ids.indexOf(itemId) !== -1) {
@@ -1943,8 +2048,8 @@
                     $('.turn_into_gems').hide();
                 } else {
                     $('.turn_into_gems').show();
-                    $('.turn_into_gems > span')
-                        .text('Turn ' + selectedItems + (selectedItems == 1 ? ' Item Into Gems' : ' Items Into Gems'));
+                    $('.turn_into_gems > span').
+                        text('Turn ' + selectedItems + (selectedItems == 1 ? ' Item Into Gems' : ' Items Into Gems'));
                 }
             });
         }
@@ -1957,8 +2062,8 @@
                     $('.unpack_booster_packs').hide();
                 } else {
                     $('.unpack_booster_packs').show();
-                    $('.unpack_booster_packs > span')
-                        .text('Unpack ' + selectedItems + (selectedItems == 1 ? ' Booster Pack' : ' Booster Packs'));
+                    $('.unpack_booster_packs > span').
+                        text('Unpack ' + selectedItems + (selectedItems == 1 ? ' Booster Pack' : ' Booster Packs'));
                 }
             });
         }
@@ -1972,11 +2077,13 @@
         function updateInventorySelection(selectedItem) {
             const item_info = $('#iteminfo' + unsafeWindow.iActiveSelectView);
 
-            if (!item_info.length)
+            if (!item_info.length) {
                 return;
+            }
 
-            if (item_info.html().indexOf('checkout/sendgift/') > -1) // Gifts have no market information.
+            if (item_info.html().indexOf('checkout/sendgift/') > -1) { // Gifts have no market information.
                 return;
+            }
 
             // Use a 'hard' item id instead of relying on the selected item_info (sometimes Steam temporarily changes the correct item (?)).
             const item_info_id = item_info.attr('id');
@@ -1986,16 +2093,18 @@
             scrap.next().insertBefore(scrap);
 
             // Skip unmarketable items
-            if (!selectedItem.marketable)
-              return;
+            if (!selectedItem.marketable) {
+                return;
+            }
 
             // Starting at prices are already retrieved in the table.
             //$('#' + item_info_id + '_item_market_actions > div:nth-child(1) > div:nth-child(2)')
             //    .remove(); // Starting at: x,xx.
 
             const market_hash_name = getMarketHashName(selectedItem);
-            if (market_hash_name == null)
+            if (market_hash_name == null) {
                 return;
+            }
 
             const appid = selectedItem.appid;
             const item = {
@@ -2016,7 +2125,7 @@
 
             const isBoosterPack = selectedItem.name.toLowerCase().endsWith('booster pack');
             if (isBoosterPack) {
-                const tradingCardsUrl = "/market/search?q=&category_753_Game%5B%5D=tag_app_" + selectedItem.market_fee_app + "&category_753_item_class%5B%5D=tag_item_class_2&appid=753";
+                const tradingCardsUrl = '/market/search?q=&category_753_Game%5B%5D=tag_app_' + selectedItem.market_fee_app + '&category_753_item_class%5B%5D=tag_item_class_2&appid=753';
                 ownerActions.append('<br/> <a class="btn_small btn_grey_white_innerfade" href="' + tradingCardsUrl + '"><span>View trading cards in Community Market</span></a>');
             }
 
@@ -2029,7 +2138,8 @@
                 return;
             }
 
-            market.getItemOrdersHistogram(item,
+            market.getItemOrdersHistogram(
+                item,
                 false,
                 function(err, histogram) {
                     if (err) {
@@ -2043,13 +2153,13 @@
                     }
 
                     const groupMain = $('<div id="listings_group">' +
-                        '<div><div id="listings_sell">Sell</div>' +
-                        histogram.sell_order_table +
-                        '</div>' +
-                        '<div><div id="listings_buy">Buy</div>' +
-                        histogram.buy_order_table +
-                        '</div>' +
-                        '</div>');
+                      '<div><div id="listings_sell">Sell</div>' +
+                      histogram.sell_order_table +
+                      '</div>' +
+                      '<div><div id="listings_buy">Buy</div>' +
+                      histogram.buy_order_table +
+                      '</div>' +
+                      '</div>');
 
                     $('#' + item_info_id + '_item_market_actions > div').after(groupMain);
 
@@ -2082,23 +2192,23 @@
                             '</span>' +
                             '<span class="item_market_action_button_edge item_market_action_button_right"></span>' +
                             '<span class="item_market_action_button_preload"></span>' +
-                            '</a>'
+                            '</a>';
                     });
 
                     $('#' + item_info_id + '_item_market_actions', item_info).append(buttons);
 
-                    $('#' + item_info_id + '_item_market_actions', item_info).append(
-                        '<div style="display:flex">' +
-                        '<input id="quick_sell_input" style="background-color: black;color: white;border: transparent;max-width:65px;text-align:center;" type="number" value="' + (histogram.lowest_sell_order / 100) + '" step="0.01" />' +
-                        '&nbsp;<a class="item_market_action_button item_market_action_button_green quick_sell_custom">' +
-                        '<span class="item_market_action_button_edge item_market_action_button_left"></span>' +
-                        '<span class="item_market_action_button_contents">➜ Sell</span>' +
-                        '<span class="item_market_action_button_edge item_market_action_button_right"></span>' +
-                        '<span class="item_market_action_button_preload"></span>' +
-                        '</a>' +
-                        '</div>');
+                    $('#' + item_info_id + '_item_market_actions', item_info).append('<div style="display:flex">' +
+                    '<input id="quick_sell_input" style="background-color: black;color: white;border: transparent;max-width:65px;text-align:center;" type="number" value="' + histogram.lowest_sell_order / 100 + '" step="0.01" />' +
+                    '&nbsp;<a class="item_market_action_button item_market_action_button_green quick_sell_custom">' +
+                    '<span class="item_market_action_button_edge item_market_action_button_left"></span>' +
+                    '<span class="item_market_action_button_contents">➜ Sell</span>' +
+                    '<span class="item_market_action_button_edge item_market_action_button_right"></span>' +
+                    '<span class="item_market_action_button_preload"></span>' +
+                    '</a>' +
+                    '</div>');
 
-                    $('.quick_sell').on('click',
+                    $('.quick_sell').on(
+                        'click',
                         function() {
                             let price = $(this).attr('id').replace('quick_sell', '');
                             price = market.getPriceBeforeFees(price);
@@ -2109,9 +2219,11 @@
                                 item: selectedItem,
                                 sellPrice: price
                             });
-                        });
+                        }
+                    );
 
-                    $('.quick_sell_custom').on('click',
+                    $('.quick_sell_custom').on(
+                        'click',
                         function() {
                             let price = $('#quick_sell_input', $('#' + item_info_id + '_item_market_actions', item_info)).val() * 100;
                             price = market.getPriceBeforeFees(price);
@@ -2122,8 +2234,10 @@
                                 item: selectedItem,
                                 sellPrice: price
                             });
-                        });
-                });
+                        }
+                    );
+                }
+            );
         }
 
         // Update the inventory UI.
@@ -2134,8 +2248,8 @@
             $('#inventory_reload_button').remove();
 
             $('#see_settings').remove();
-            $('#global_action_menu')
-                .prepend('<span id="see_settings"><a href="javascript:void(0)">⬖ Steam Economy Enhancer</a></span>');
+            $('#global_action_menu').
+                prepend('<span id="see_settings"><a href="javascript:void(0)">⬖ Steam Economy Enhancer</a></span>');
             $('#see_settings').on('click', '*', () => openSettings());
 
             const appId = getActiveInventory().m_appid;
@@ -2143,20 +2257,20 @@
             const TF2 = appId == 440;
 
             const sellButtons = $('<div id="inventory_sell_buttons" class="see_inventory_buttons">' +
-                '<a class="btn_green_white_innerfade btn_medium_wide sell_all"><span>Sell All Items</span></a>' +
-                '<a class="btn_green_white_innerfade btn_medium_wide sell_all_duplicates"><span>Sell All Duplicate Items</span></a>' +
-                '<a class="btn_green_white_innerfade btn_medium_wide sell_selected" style="display:none"><span>Sell Selected Items</span></a>' +
-                '<a class="btn_green_white_innerfade btn_medium_wide sell_manual" style="display:none"><span>Sell Manually</span></a>' +
-                (showMiscOptions ?
-                    '<a class="btn_green_white_innerfade btn_medium_wide sell_all_cards"><span>Sell All Cards</span></a>' +
-                    '<div class="see_inventory_buttons">' +
-                    '<a class="btn_darkblue_white_innerfade btn_medium_wide turn_into_gems" style="display:none"><span>Turn Selected Items Into Gems</span></a>' +
-                    '<a class="btn_darkblue_white_innerfade btn_medium_wide gem_all_duplicates"><span>Turn All Duplicate Items Into Gems</span></a>' +
-                    '<a class="btn_darkblue_white_innerfade btn_medium_wide unpack_booster_packs" style="display:none"><span>Unpack Selected Booster Packs</span></a>' +
-                    '</div>' :
-                    '') +
-                (TF2 ? '<a class="btn_green_white_innerfade btn_medium_wide sell_all_crates"><span>Sell All Crates</span></a>' : '') +
-                '</div>');
+              '<a class="btn_green_white_innerfade btn_medium_wide sell_all"><span>Sell All Items</span></a>' +
+              '<a class="btn_green_white_innerfade btn_medium_wide sell_all_duplicates"><span>Sell All Duplicate Items</span></a>' +
+              '<a class="btn_green_white_innerfade btn_medium_wide sell_selected" style="display:none"><span>Sell Selected Items</span></a>' +
+              '<a class="btn_green_white_innerfade btn_medium_wide sell_manual" style="display:none"><span>Sell Manually</span></a>' +
+              (showMiscOptions
+                  ? '<a class="btn_green_white_innerfade btn_medium_wide sell_all_cards"><span>Sell All Cards</span></a>' +
+                  '<div class="see_inventory_buttons">' +
+                  '<a class="btn_darkblue_white_innerfade btn_medium_wide turn_into_gems" style="display:none"><span>Turn Selected Items Into Gems</span></a>' +
+                  '<a class="btn_darkblue_white_innerfade btn_medium_wide gem_all_duplicates"><span>Turn All Duplicate Items Into Gems</span></a>' +
+                  '<a class="btn_darkblue_white_innerfade btn_medium_wide unpack_booster_packs" style="display:none"><span>Unpack Selected Booster Packs</span></a>' +
+                  '</div>'
+                  : '') +
+                  (TF2 ? '<a class="btn_green_white_innerfade btn_medium_wide sell_all_crates"><span>Sell All Crates</span></a>' : '') +
+                  '</div>');
 
             const reloadButton =
                 $('<a id="inventory_reload_button" class="btn_darkblue_white_innerfade btn_medium_wide reload_inventory" style="margin-right:12px"><span>Reload Inventory</span></a>');
@@ -2169,24 +2283,28 @@
             $('#inventory_applogo').after(logger);
 
 
-            $("#logger").on('scroll',
+            $('#logger').on(
+                'scroll',
                 function() {
                     const hasUserScrolledToBottom =
-                        $("#logger").prop('scrollHeight') - $("#logger").prop('clientHeight') <=
-                        $("#logger").prop('scrollTop') + 1;
+                        $('#logger').prop('scrollHeight') - $('#logger').prop('clientHeight') <=
+                        $('#logger').prop('scrollTop') + 1;
                     userScrolled = !hasUserScrolledToBottom;
-                });
+                }
+            );
 
             // Only add buttons on the user's inventory.
             if (isOwnInventory) {
                 $('#inventory_applogo').after(sellButtons);
 
                 // Add bindings to sell buttons.
-                $('.sell_all').on('click',
+                $('.sell_all').on(
+                    'click',
                     '*',
                     function() {
                         sellAllItems();
-                    });
+                    }
+                );
                 $('.sell_selected').on('click', '*', sellSelectedItems);
                 $('.sell_all_duplicates').on('click', '*', sellAllDuplicateItems);
                 $('.gem_all_duplicates').on('click', '*', gemAllDuplicateItems);
@@ -2199,13 +2317,16 @@
             }
 
             $('.inventory_rightnav').prepend(reloadButton);
-            $('.reload_inventory').on('click',
+            $('.reload_inventory').on(
+                'click',
                 '*',
                 function() {
                     window.location.reload();
-                });
+                }
+            );
 
-            loadAllInventories().then(function() {
+            loadAllInventories().then(
+                function() {
                     const updateInventoryPrices = function() {
                         if (getSettingWithDefault(SETTING_INVENTORY_PRICE_LABELS) == 1) {
                             setInventoryPrices(getInventoryItems());
@@ -2215,26 +2336,31 @@
                     // Load after the inventory is loaded.
                     updateInventoryPrices();
 
-                    $('#inventory_pagecontrols').observe('childlist',
+                    $('#inventory_pagecontrols').observe(
+                        'childlist',
                         '*',
                         function() {
                             updateInventoryPrices();
-                        });
+                        }
+                    );
                 },
                 function() {
                     logDOM('Could not retrieve the inventory...');
-                });
+                }
+            );
         }
 
         // Loads the specified inventories.
         function loadInventories(inventories) {
             return new Promise(function(resolve) {
-                inventories.reduce(function(promise, inventory) {
+                inventories.reduce(
+                    function(promise, inventory) {
                         return promise.then(function() {
                             return inventory.LoadCompleteInventory().done(function() {});
                         });
                     },
-                    Promise.resolve());
+                    Promise.resolve()
+                );
 
                 resolve();
             });
@@ -2290,12 +2416,12 @@
     if (currentPage == PAGE_INVENTORY || currentPage == PAGE_TRADEOFFER) {
 
         // Gets the active inventory.
-        function getActiveInventory() { // eslint-disable-line no-unused-vars
+        function getActiveInventory() {  
             return unsafeWindow.g_ActiveInventory;
         }
 
         // Sets the prices for the items.
-        function setInventoryPrices(items) { // eslint-disable-line no-unused-vars
+        function setInventoryPrices(items) {  
             inventoryPriceQueue.kill();
 
             items.forEach(function(item) {
@@ -2303,7 +2429,7 @@
                     return;
                 }
 
-                if (!$(item.element).is(":visible")) {
+                if (!$(item.element).is(':visible')) {
                     return;
                 }
 
@@ -2311,15 +2437,19 @@
             });
         }
 
-        const inventoryPriceQueue = async.queue(function(item, next) {
-                inventoryPriceQueueWorker(item,
+        const inventoryPriceQueue = async.queue(
+            function(item, next) {
+                inventoryPriceQueueWorker(
+                    item,
                     false,
                     function(success, cached) {
                         if (success) {
-                            setTimeout(function() {
+                            setTimeout(
+                                function() {
                                     next();
                                 },
-                                cached ? 0 : getRandomInt(1000, 1500));
+                                cached ? 0 : getRandomInt(1000, 1500)
+                            );
                         } else {
                             if (!item.ignoreErrors) {
                                 item.ignoreErrors = true;
@@ -2328,34 +2458,39 @@
 
                             numberOfFailedRequests++;
 
-                            const delay = numberOfFailedRequests > 1 ?
-                                getRandomInt(30000, 45000) :
-                                getRandomInt(1000, 1500);
+                            const delay = numberOfFailedRequests > 1
+                                ? getRandomInt(30000, 45000)
+                                : getRandomInt(1000, 1500);
 
-                            if (numberOfFailedRequests > 3)
+                            if (numberOfFailedRequests > 3) {
                                 numberOfFailedRequests = 0;
+                            }
 
                             setTimeout(function() {
                                 next();
                             }, cached ? 0 : delay);
                         }
-                    });
+                    }
+                );
             },
-            1);
+            1
+        );
 
         function inventoryPriceQueueWorker(item, ignoreErrors, callback) {
             let failed = 0;
             const itemName = item.name || item.description.name;
 
             // Only get the market orders here, the history is not important to visualize the current prices.
-            market.getItemOrdersHistogram(item,
+            market.getItemOrdersHistogram(
+                item,
                 true,
                 function(err, histogram, cachedListings) {
                     if (err) {
                         logConsole('Failed to get orders histogram for ' + itemName);
 
-                        if (err == ERROR_FAILED)
+                        if (err == ERROR_FAILED) {
                             failed += 1;
+                        }
                     }
 
                     if (failed > 0 && !ignoreErrors) {
@@ -2364,23 +2499,24 @@
 
                     const sellPrice = calculateSellPriceBeforeFees(null, histogram, false, 0, 65535);
 
-                    const itemPrice = sellPrice == 65535 ?
-                        '∞' :
-                        formatPrice(market.getPriceIncludingFees(sellPrice));
+                    const itemPrice = sellPrice == 65535
+                        ? '∞'
+                        : formatPrice(market.getPriceIncludingFees(sellPrice));
 
                     const elementName = (currentPage == PAGE_TRADEOFFER ? '#item' : '#') +
-                        item.appid +
-                        '_' +
-                        item.contextid +
-                        '_' +
-                        item.id;
+                      item.appid +
+                      '_' +
+                      item.contextid +
+                      '_' +
+                      item.id;
                     const element = $(elementName);
 
                     $('.inventory_item_price', element).remove();
                     element.append('<span class="inventory_item_price price_' + (sellPrice == 65535 ? 0 : market.getPriceIncludingFees(sellPrice)) + '">' + itemPrice + '</span>');
 
                     return callback(true, cachedListings);
-                });
+                }
+            );
         }
     }
     //#endregion
@@ -2412,27 +2548,35 @@
         }
 
         const marketListingsQueue = async.queue(function(listing, next) {
-            marketListingsQueueWorker(listing,
+            marketListingsQueueWorker(
+                listing,
                 false,
                 function(success, cached) {
                     if (success) {
-                        setTimeout(function() {
-                            increaseMarketProgress();
-                            next();
-                        },
-                        cached ? 0 : getRandomInt(1000, 1500));
+                        setTimeout(
+                            function() {
+                                increaseMarketProgress();
+                                next();
+                            },
+                            cached ? 0 : getRandomInt(1000, 1500)
+                        );
                     } else {
-                        setTimeout(function() {
-                            marketListingsQueueWorker(listing,
-                                true,
-                                function() {
-                                    increaseMarketProgress();
-                                    next(); // Go to the next queue item, regardless of success.
-                                });
-                        },
-                        cached ? 0 : getRandomInt(30000, 45000));
+                        setTimeout(
+                            function() {
+                                marketListingsQueueWorker(
+                                    listing,
+                                    true,
+                                    function() {
+                                        increaseMarketProgress();
+                                        next(); // Go to the next queue item, regardless of success.
+                                    }
+                                );
+                            },
+                            cached ? 0 : getRandomInt(30000, 45000)
+                        );
                     }
-                });
+                }
+            );
         }, 1);
 
         // Gets the price, in cents, from a market listing.
@@ -2440,8 +2584,9 @@
             let priceLabel = listing.trim().replace('--', '00');
 
             // Fixes RUB, which has a dot at the end.
-            if (priceLabel[priceLabel.length - 1] === '.' || priceLabel[priceLabel.length - 1] === ",")
+            if (priceLabel[priceLabel.length - 1] === '.' || priceLabel[priceLabel.length - 1] === ',') {
                 priceLabel = priceLabel.slice(0, -1);
+            }
 
             // For round numbers (e.g., 100 EUR).
             if (priceLabel.indexOf('.') === -1 && priceLabel.indexOf(',') === -1) {
@@ -2520,24 +2665,28 @@
 
             let failed = 0;
 
-            market.getPriceHistory(item,
+            market.getPriceHistory(
+                item,
                 true,
                 function(errorPriceHistory, history, cachedHistory) {
                     if (errorPriceHistory) {
                         logConsole('Failed to get price history for ' + game_name);
 
-                        if (errorPriceHistory == ERROR_FAILED)
+                        if (errorPriceHistory == ERROR_FAILED) {
                             failed += 1;
+                        }
                     }
 
-                    market.getItemOrdersHistogram(item,
+                    market.getItemOrdersHistogram(
+                        item,
                         true,
                         function(errorHistogram, histogram, cachedListings) {
                             if (errorHistogram) {
                                 logConsole('Failed to get orders histogram for ' + game_name);
 
-                                if (errorHistogram == ERROR_FAILED)
+                                if (errorHistogram == ERROR_FAILED) {
                                     failed += 1;
+                                }
                             }
 
                             if (failed > 0 && !ignoreErrors) {
@@ -2546,15 +2695,17 @@
 
                             // Shows the highest buy order price on the market listings.
                             // The 'histogram.highest_buy_order' is not reliable as Steam is caching this value, but it gives some idea for older titles/listings.
-                            const highestBuyOrderPrice = (histogram == null || histogram.highest_buy_order == null ?
-                                '-' :
-                                formatPrice(histogram.highest_buy_order));
-                            $('.market_table_value > span:nth-child(1) > span:nth-child(1) > span:nth-child(1)',
-                                listingUI).append(' ➤ <span title="This is likely the highest buy order price.">' +
-                                highestBuyOrderPrice +
-                                '</span>');
-
-                            logConsole('============================')
+                            const highestBuyOrderPrice = histogram == null || histogram.highest_buy_order == null
+                                ? '-'
+                                : formatPrice(histogram.highest_buy_order);
+                            $(
+                                '.market_table_value > span:nth-child(1) > span:nth-child(1) > span:nth-child(1)',
+                                listingUI
+                            ).append(' ➤ <span title="This is likely the highest buy order price.">' +
+                            highestBuyOrderPrice +
+                            '</span>');
+
+                            logConsole('============================');
                             logConsole(JSON.stringify(listing));
                             logConsole(game_name + ': ' + asset.name);
                             logConsole('Current price: ' + price / 100.0);
@@ -2563,35 +2714,41 @@
                             // The price without the offset is required to not relist the item constantly when you have the lowest price (i.e., with a negative offset).
                             // The price with the offset should be used for relisting so it will still apply the user-set offset.
 
-                            const sellPriceWithoutOffset = calculateSellPriceBeforeFees(history,
+                            const sellPriceWithoutOffset = calculateSellPriceBeforeFees(
+                                history,
                                 histogram,
                                 false,
                                 priceInfo.minPriceBeforeFees,
-                                priceInfo.maxPriceBeforeFees);
-                            const sellPriceWithOffset = calculateSellPriceBeforeFees(history,
+                                priceInfo.maxPriceBeforeFees
+                            );
+                            const sellPriceWithOffset = calculateSellPriceBeforeFees(
+                                history,
                                 histogram,
                                 true,
                                 priceInfo.minPriceBeforeFees,
-                                priceInfo.maxPriceBeforeFees);
+                                priceInfo.maxPriceBeforeFees
+                            );
 
                             const sellPriceWithoutOffsetWithFees = market.getPriceIncludingFees(sellPriceWithoutOffset);
 
                             logConsole('Calculated price: ' +
-                                sellPriceWithoutOffsetWithFees / 100.0 +
-                                ' (' +
-                                sellPriceWithoutOffset / 100.0 +
-                                ')');
+                            sellPriceWithoutOffsetWithFees / 100.0 +
+                            ' (' +
+                            sellPriceWithoutOffset / 100.0 +
+                            ')');
 
                             listingUI.addClass('price_' + sellPriceWithOffset);
 
-                            $('.market_listing_my_price', listingUI).last().prop('title',
-                                'The best price is ' + formatPrice(sellPriceWithoutOffsetWithFees) + '.');
+                            $('.market_listing_my_price', listingUI).last().prop(
+                                'title',
+                                'The best price is ' + formatPrice(sellPriceWithoutOffsetWithFees) + '.'
+                            );
 
                             if (sellPriceWithoutOffsetWithFees < price) {
                                 logConsole('Sell price is too high.');
 
-                                $('.market_listing_my_price', listingUI).last()
-                                    .css('background', COLOR_PRICE_EXPENSIVE);
+                                $('.market_listing_my_price', listingUI).last().
+                                    css('background', COLOR_PRICE_EXPENSIVE);
                                 listingUI.addClass('overpriced');
 
                                 if (getSettingWithDefault(SETTING_RELIST_AUTOMATICALLY) == 1) {
@@ -2610,39 +2767,52 @@
                             }
 
                             return callback(true, cachedHistory && cachedListings);
-                        });
-                });
+                        }
+                    );
+                }
+            );
         }
 
-        const marketOverpricedQueue = async.queue(function(item, next) {
-                marketOverpricedQueueWorker(item,
+        const marketOverpricedQueue = async.queue(
+            function(item, next) {
+                marketOverpricedQueueWorker(
+                    item,
                     false,
                     function(success) {
                         if (success) {
-                            setTimeout(function() {
-                                increaseMarketProgress();
-                                next();
-                            },
-                            getRandomInt(1000, 1500));
+                            setTimeout(
+                                function() {
+                                    increaseMarketProgress();
+                                    next();
+                                },
+                                getRandomInt(1000, 1500)
+                            );
                         } else {
-                            setTimeout(function() {
-                                marketOverpricedQueueWorker(item,
-                                    true,
-                                    function() {
-                                        increaseMarketProgress();
-                                        next(); // Go to the next queue item, regardless of success.
-                                    });
-                            },
-                            getRandomInt(30000, 45000));
+                            setTimeout(
+                                function() {
+                                    marketOverpricedQueueWorker(
+                                        item,
+                                        true,
+                                        function() {
+                                            increaseMarketProgress();
+                                            next(); // Go to the next queue item, regardless of success.
+                                        }
+                                    );
+                                },
+                                getRandomInt(30000, 45000)
+                            );
                         }
-                    });
+                    }
+                );
             },
-            1);
+            1
+        );
 
         function marketOverpricedQueueWorker(item, ignoreErrors, callback) {
             const listingUI = getListingFromLists(item.listing).elm;
 
-            market.removeListing(item.listing, false,
+            market.removeListing(
+                item.listing, false,
                 function(errorRemove) {
                     if (!errorRemove) {
                         $('.actual_content', listingUI).css('background', COLOR_PENDING);
@@ -2654,7 +2824,7 @@
                             const decodedMarketHashName = decodeURIComponent(itemName.substring(marketHashNameIndex));
                             let newAssetId = -1;
 
-                            unsafeWindow.RequestFullInventory(market.inventoryUrl + item.appid + "/" + item.contextid + "/", {}, null, null, function(transport) {
+                            unsafeWindow.RequestFullInventory(market.inventoryUrl + item.appid + '/' + item.contextid + '/', {}, null, null, function(transport) {
                                 if (transport.responseJSON && transport.responseJSON.success) {
                                     const inventory = transport.responseJSON.rgInventory;
 
@@ -2673,14 +2843,15 @@
                                     item.assetid = newAssetId;
                                     marketListingsRelistedAssets.push(newAssetId);
 
-                                    market.sellItem(item,
+                                    market.sellItem(
+                                        item,
                                         item.sellPrice,
                                         function(errorSell) {
                                             if (!errorSell) {
                                                 $('.actual_content', listingUI).css('background', COLOR_SUCCESS);
 
                                                 setTimeout(function() {
-                                                    removeListingFromLists(item.listing)
+                                                    removeListingFromLists(item.listing);
                                                 }, 3000);
 
                                                 return callback(true);
@@ -2688,7 +2859,8 @@
                                                 $('.actual_content', listingUI).css('background', COLOR_ERROR);
                                                 return callback(false);
                                             }
-                                        });
+                                        }
+                                    );
 
                                 } else {
                                     $('.actual_content', listingUI).css('background', COLOR_ERROR);
@@ -2700,7 +2872,8 @@
                         $('.actual_content', listingUI).css('background', COLOR_ERROR);
                         return callback(false);
                     }
-                });
+                }
+            );
         }
 
         // Queue an overpriced item listing to be relisted.
@@ -2711,8 +2884,9 @@
 
             const items = $(listingUI).attr('class').split(' ');
             for (const i in items) {
-                if (items[i].toString().includes('price_'))
+                if (items[i].toString().includes('price_')) {
                     price = parseInt(items[i].toString().replace('price_', ''));
+                }
             }
 
             if (price > 0) {
@@ -2727,52 +2901,65 @@
             }
         }
 
-        const marketRemoveQueue = async.queue(function(listingid, next) {
-                marketRemoveQueueWorker(listingid,
+        const marketRemoveQueue = async.queue(
+            function(listingid, next) {
+                marketRemoveQueueWorker(
+                    listingid,
                     false,
                     function(success) {
                         if (success) {
-                            setTimeout(function() {
-                                increaseMarketProgress();
-                                next();
-                            },
-                            getRandomInt(50, 100));
+                            setTimeout(
+                                function() {
+                                    increaseMarketProgress();
+                                    next();
+                                },
+                                getRandomInt(50, 100)
+                            );
                         } else {
-                            setTimeout(function() {
-                                marketRemoveQueueWorker(listingid,
-                                    true,
-                                    function() {
-                                        increaseMarketProgress();
-                                        next(); // Go to the next queue item, regardless of success.
-                                    });
-                            },
-                            getRandomInt(30000, 45000));
+                            setTimeout(
+                                function() {
+                                    marketRemoveQueueWorker(
+                                        listingid,
+                                        true,
+                                        function() {
+                                            increaseMarketProgress();
+                                            next(); // Go to the next queue item, regardless of success.
+                                        }
+                                    );
+                                },
+                                getRandomInt(30000, 45000)
+                            );
                         }
-                    });
+                    }
+                );
             },
-            10);
+            10
+        );
 
         function marketRemoveQueueWorker(listingid, ignoreErrors, callback) {
             const listingUI = getListingFromLists(listingid).elm;
             const isBuyOrder = listingUI.id.startsWith('mybuyorder_');
 
-            market.removeListing(listingid, isBuyOrder,
+            market.removeListing(
+                listingid, isBuyOrder,
                 function(errorRemove) {
                     if (!errorRemove) {
                         $('.actual_content', listingUI).css('background', COLOR_SUCCESS);
 
-                        setTimeout(function() {
+                        setTimeout(
+                            function() {
                                 removeListingFromLists(listingid);
 
                                 const numberOfListings = marketLists[0].size;
                                 if (numberOfListings > 0) {
-                                    $('#my_market_selllistings_number').text((numberOfListings).toString());
+                                    $('#my_market_selllistings_number').text(numberOfListings.toString());
 
                                     // This seems identical to the number of sell listings.
-                                    $('#my_market_activelistings_number').text((numberOfListings).toString());
+                                    $('#my_market_activelistings_number').text(numberOfListings.toString());
                                 }
                             },
-                            3000);
+                            3000
+                        );
 
                         return callback(true);
                     } else {
@@ -2780,38 +2967,43 @@
 
                         return callback(false);
                     }
-                });
+                }
+            );
         }
 
-        const marketListingsItemsQueue = async.queue(function(listing, next) {
-                $.get(window.location.origin + '/market/mylistings?count=100&start=' + listing,
-                        function(data) {
-                            if (!data || !data.success) {
-                                increaseMarketProgress();
-                                next();
-                                return;
-                            }
+        const marketListingsItemsQueue = async.queue(
+            function(listing, next) {
+                $.get(
+                    window.location.origin + '/market/mylistings?count=100&start=' + listing,
+                    function(data) {
+                        if (!data || !data.success) {
+                            increaseMarketProgress();
+                            next();
+                            return;
+                        }
 
-                            const myMarketListings = $('#tabContentsMyActiveMarketListingsRows');
+                        const myMarketListings = $('#tabContentsMyActiveMarketListingsRows');
 
-                            const nodes = $.parseHTML(data.results_html);
-                            const rows = $('.market_listing_row', nodes);
-                            myMarketListings.append(rows);
+                        const nodes = $.parseHTML(data.results_html);
+                        const rows = $('.market_listing_row', nodes);
+                        myMarketListings.append(rows);
 
-                            // g_rgAssets
-                            unsafeWindow.MergeWithAssetArray(data.assets); // This is a method from Steam.
+                        // g_rgAssets
+                        unsafeWindow.MergeWithAssetArray(data.assets); // This is a method from Steam.
 
-                            increaseMarketProgress();
-                            next();
-                        },
-                        'json')
-                    .fail(function() {
+                        increaseMarketProgress();
+                        next();
+                    },
+                    'json'
+                ).
+                    fail(function() {
                         increaseMarketProgress();
                         next();
                         return;
                     });
             },
-            1);
+            1
+        );
 
         marketListingsItemsQueue.drain = function() {
             const myMarketListings = $('#tabContentsMyActiveMarketListingsRows');
@@ -2821,20 +3013,23 @@
             const seen = {};
             $('.market_listing_row', myMarketListings).each(function() {
                 const item_id = $(this).attr('id');
-                if (seen[item_id])
+                if (seen[item_id]) {
                     $(this).remove();
-                else
+                } else {
                     seen[item_id] = true;
+                }
 
                 // Remove listings awaiting confirmations, they are already listed separately.
-                if ($('.item_market_action_button', this).attr('href').toLowerCase()
-                    .includes('CancelMarketListingConfirmation'.toLowerCase()))
+                if ($('.item_market_action_button', this).attr('href').toLowerCase().
+                    includes('CancelMarketListingConfirmation'.toLowerCase())) {
                     $(this).remove();
+                }
 
                 // Remove buy order listings, they are already listed separately.
-                if ($('.item_market_action_button', this).attr('href').toLowerCase()
-                    .includes('CancelMarketBuyOrder'.toLowerCase()))
+                if ($('.item_market_action_button', this).attr('href').toLowerCase().
+                    includes('CancelMarketBuyOrder'.toLowerCase())) {
                     $(this).remove();
+                }
             });
 
             // Now add the market checkboxes.
@@ -2852,17 +3047,18 @@
             $('.market_home_listing_table').each(function(e) {
 
                 // Not for popular / new / recently sold items (bottom of page).
-                if ($('.my_market_header', $(this)).length == 0)
+                if ($('.my_market_header', $(this)).length == 0) {
                     return;
+                }
 
                 // Buy orders and listings confirmations are not grouped like the sell listings, add this so pagination works there as well.
                 if (!$(this).attr('id')) {
                     $(this).attr('id', 'market-listing-' + e);
 
-                    $(this).append('<div class="market_listing_see" id="market-listing-container-' + e + '"></div>')
+                    $(this).append('<div class="market_listing_see" id="market-listing-container-' + e + '"></div>');
                     $('.market_listing_row', $(this)).appendTo($('#market-listing-container-' + e));
                 } else {
-                    $(this).children().last().addClass("market_listing_see");
+                    $(this).children().last().addClass('market_listing_see');
                 }
 
                 addMarketPagination($('.market_listing_see', this).last());
@@ -2877,10 +3073,12 @@
                     const listingid = replaceNonNumbers(marketLists[i].items[j].values().market_listing_item_name);
                     const assetInfo = getAssetInfoFromListingId(listingid);
 
-                    if (!isNaN(assetInfo.priceBuyer))
+                    if (!isNaN(assetInfo.priceBuyer)) {
                         totalPriceBuyer += assetInfo.priceBuyer;
-                    if (!isNaN(assetInfo.priceSeller))
+                    }
+                    if (!isNaN(assetInfo.priceSeller)) {
                         totalPriceSeller += assetInfo.priceSeller;
+                    }
 
                     marketListingsQueue.push({
                         listingid,
@@ -2905,8 +3103,9 @@
 
             const actionButton = $('.item_market_action_button', listing.elm).attr('href');
             // Market buy orders have no asset info.
-            if (actionButton == null || actionButton.toLowerCase().includes('cancelmarketbuyorder'))
+            if (actionButton == null || actionButton.toLowerCase().includes('cancelmarketbuyorder')) {
                 return {};
+            }
 
             const priceBuyer = getPriceFromMarketListing($('.market_listing_price > span:nth-child(1) > span:nth-child(1)', listing.elm).text());
             const priceSeller = getPriceFromMarketListing($('.market_listing_price > span:nth-child(1) > span:nth-child(3)', listing.elm).text());
@@ -2930,8 +3129,8 @@
             market_listing_see.before('<ul class="paginationTop pagination"></ul>');
             market_listing_see.after('<ul class="paginationBottom pagination"></ul>');
 
-            $('.market_listing_table_header', market_listing_see.parent())
-                .append('<input class="search" id="market_name_search" placeholder="Search..." />');
+            $('.market_listing_table_header', market_listing_see.parent()).
+                append('<input class="search" id="market_name_search" placeholder="Search..." />');
 
             let pageSize = parseInt(getSettingWithDefault(SETTING_MARKET_PAGE_COUNT), 10);
 
@@ -2941,28 +3140,34 @@
 
             const options = {
                 valueNames: [
-                    'market_listing_game_name', 'market_listing_item_name_link', 'market_listing_price',
-                    'market_listing_listed_date', {
+                    'market_listing_game_name',
+                    'market_listing_item_name_link',
+                    'market_listing_price',
+                    'market_listing_listed_date',
+                    {
                         name: 'market_listing_item_name',
                         attr: 'id'
                     }
                 ],
-                pagination: [{
-                    name: "paginationTop",
-                    paginationClass: "paginationTop",
-                    innerWindow: 100,
-                    outerWindow: 100,
-                    left: 100,
-                    right: 100
-                }, {
-                    name: "paginationBottom",
-                    paginationClass: "paginationBottom",
-                    innerWindow: 100,
-                    outerWindow: 100,
-                    left: 100,
-                    right: 100
-                }],
-                page: pageSize,
+                pagination: [
+                    {
+                        name: 'paginationTop',
+                        paginationClass: 'paginationTop',
+                        innerWindow: 100,
+                        outerWindow: 100,
+                        left: 100,
+                        right: 100
+                    },
+                    {
+                        name: 'paginationBottom',
+                        paginationClass: 'paginationBottom',
+                        innerWindow: 100,
+                        outerWindow: 100,
+                        left: 100,
+                        right: 100
+                    }
+                ],
+                page: pageSize
             };
 
             try {
@@ -2980,8 +3185,8 @@
                 // Don't add it again, one time is enough.
                 if ($('.market_listing_select', this).length == 0) {
                     $('.market_listing_cancel_button', $(this)).append('<div class="market_listing_select">' +
-                        '<input type="checkbox" class="market_select_item"/>' +
-                        '</div>');
+                    '<input type="checkbox" class="market_select_item"/>' +
+                    '</div>');
 
                     $('.market_select_item', this).change(function() {
                         updateMarketSelectAllButton();
@@ -2999,9 +3204,9 @@
                 let currentCount = 0;
                 let totalCount = 0;
 
-                if (typeof unsafeWindow.g_oMyListings !== 'undefined' && unsafeWindow.g_oMyListings != null && unsafeWindow.g_oMyListings.m_cTotalCount != null)
+                if (typeof unsafeWindow.g_oMyListings !== 'undefined' && unsafeWindow.g_oMyListings != null && unsafeWindow.g_oMyListings.m_cTotalCount != null) {
                     totalCount = unsafeWindow.g_oMyListings.m_cTotalCount;
-                else {
+                } else {
                     totalCount = parseInt($('#my_market_selllistings_number').text());
                 }
 
@@ -3019,9 +3224,9 @@
 
                 // Show the spinner so the user knows that something is going on.
                 $('.my_market_header').eq(0).append('<div id="market_listings_spinner">' +
-                    spinnerBlock +
-                    '<div style="text-align:center">Loading market listings</div>' +
-                    '</div>');
+                spinnerBlock +
+                '<div style="text-align:center">Loading market listings</div>' +
+                '</div>');
 
                 while (currentCount < totalCount) {
                     marketListingsItemsQueue.push(currentCount);
@@ -3032,10 +3237,11 @@
                 // This is on a market item page.
                 $('.market_home_listing_table').each(function() {
                     // Not on 'x requests to buy at y,yy or lower'.
-                    if ($('#market_buyorder_info_show_details', $(this)).length > 0)
+                    if ($('#market_buyorder_info_show_details', $(this)).length > 0) {
                         return;
+                    }
 
-                    $(this).children().last().addClass("market_listing_see");
+                    $(this).children().last().addClass('market_listing_see');
 
                     addMarketPagination($('.market_listing_see', this).last());
                     sortMarketListings($(this), false, false, true);
@@ -3065,7 +3271,7 @@
                         assetid: assetInfo.assetid
                     });
                     increaseMarketProgressMax();
-                })
+                });
             }
         }
 
@@ -3074,8 +3280,9 @@
             $('.market_listing_buttons').each(function() {
                 const selectionGroup = $(this).parent().parent();
                 let invert = $('.market_select_item:checked', selectionGroup).length == $('.market_select_item', selectionGroup).length;
-                if ($('.market_select_item', selectionGroup).length == 0) // If there are no items to select, keep it at Select all.
+                if ($('.market_select_item', selectionGroup).length == 0) { // If there are no items to select, keep it at Select all.
                     invert = false;
+                }
                 $('.select_all > span', selectionGroup).text(invert ? 'Deselect all' : 'Select all');
             });
         }
@@ -3096,14 +3303,16 @@
             const arrow_up = '🡹';
 
             $('.market_listing_table_header > span', elem).each(function() {
-                if ($(this).hasClass('market_listing_edit_buttons'))
+                if ($(this).hasClass('market_listing_edit_buttons')) {
                     return;
+                }
 
-                if ($(this).text().includes(arrow_up))
+                if ($(this).text().includes(arrow_up)) {
                     asc = false;
+                }
 
                 $(this).text($(this).text().replace(' ' + arrow_down, '').replace(' ' + arrow_up, ''));
-            })
+            });
 
             let market_listing_selector;
             if (isPrice) {
@@ -3115,51 +3324,56 @@
             }
             market_listing_selector.text(market_listing_selector.text() + ' ' + (asc ? arrow_up : arrow_down));
 
-            if (list.sort == null)
+            if (list.sort == null) {
                 return;
+            }
 
             if (isName) {
                 list.sort('', {
-                    order: asc ? "asc" : "desc",
+                    order: asc ? 'asc' : 'desc',
                     sortFunction: function(a, b) {
-                        if (a.values().market_listing_game_name.toLowerCase()
-                            .localeCompare(b.values().market_listing_game_name.toLowerCase()) ==
+                        if (a.values().market_listing_game_name.toLowerCase().
+                            localeCompare(b.values().market_listing_game_name.toLowerCase()) ==
                             0) {
-                            return a.values().market_listing_item_name_link.toLowerCase()
-                                .localeCompare(b.values().market_listing_item_name_link.toLowerCase());
+                            return a.values().market_listing_item_name_link.toLowerCase().
+                                localeCompare(b.values().market_listing_item_name_link.toLowerCase());
                         }
-                        return a.values().market_listing_game_name.toLowerCase()
-                            .localeCompare(b.values().market_listing_game_name.toLowerCase());
+                        return a.values().market_listing_game_name.toLowerCase().
+                            localeCompare(b.values().market_listing_game_name.toLowerCase());
                     }
                 });
             } else if (isDate) {
                 const currentMonth = luxon.DateTime.local().month;
 
                 list.sort('market_listing_listed_date', {
-                    order: asc ? "asc" : "desc",
+                    order: asc ? 'asc' : 'desc',
                     sortFunction: function(a, b) {
-                        let firstDate = luxon.DateTime.fromString((a.values().market_listing_listed_date).trim(), 'd MMM');
-                        let secondDate = luxon.DateTime.fromString((b.values().market_listing_listed_date).trim(), 'd MMM');
+                        let firstDate = luxon.DateTime.fromString(a.values().market_listing_listed_date.trim(), 'd MMM');
+                        let secondDate = luxon.DateTime.fromString(b.values().market_listing_listed_date.trim(), 'd MMM');
 
                         if (firstDate == null || secondDate == null) {
                             return 0;
                         }
 
-                        if (firstDate.month > currentMonth)
-                            firstDate = firstDate.plus({ years: -1});
-                        if (secondDate.month > currentMonth)
-                            secondDate = secondDate.plus({ years: -1});
+                        if (firstDate.month > currentMonth) {
+                            firstDate = firstDate.plus({years: -1});
+                        }
+                        if (secondDate.month > currentMonth) {
+                            secondDate = secondDate.plus({years: -1});
+                        }
 
-                        if (firstDate > secondDate)
+                        if (firstDate > secondDate) {
                             return 1;
-                        if (firstDate === secondDate)
+                        }
+                        if (firstDate === secondDate) {
                             return 0;
+                        }
                         return -1;
                     }
-                })
+                });
             } else if (isPrice) {
                 list.sort('market_listing_price', {
-                    order: asc ? "asc" : "desc",
+                    order: asc ? 'asc' : 'desc',
                     sortFunction: function(a, b) {
                         let listingPriceA = $(a.values().market_listing_price).text();
                         listingPriceA = listingPriceA.substr(0, listingPriceA.indexOf('('));
@@ -3174,26 +3388,27 @@
 
                         return firstPrice - secondPrice;
                     }
-                })
+                });
             }
         }
 
         function getListFromContainer(group) {
             for (let i = 0; i < marketLists.length; i++) {
-                if (group.attr('id') == $(marketLists[i].listContainer).attr('id'))
+                if (group.attr('id') == $(marketLists[i].listContainer).attr('id')) {
                     return marketLists[i];
+                }
             }
         }
 
         function getListingFromLists(listingid) {
             // Sometimes listing ids are contained in multiple lists (?), use the last one available as this is the one we're most likely interested in.
             for (let i = marketLists.length - 1; i >= 0; i--) {
-                let values = marketLists[i].get("market_listing_item_name", 'mylisting_' + listingid + '_name');
+                let values = marketLists[i].get('market_listing_item_name', 'mylisting_' + listingid + '_name');
                 if (values != null && values.length > 0) {
                     return values[0];
                 }
 
-                values = marketLists[i].get("market_listing_item_name", 'mbuyorder_' + listingid + '_name');
+                values = marketLists[i].get('market_listing_item_name', 'mbuyorder_' + listingid + '_name');
                 if (values != null && values.length > 0) {
                     return values[0];
                 }
@@ -3204,69 +3419,68 @@
 
         function removeListingFromLists(listingid) {
             for (let i = 0; i < marketLists.length; i++) {
-                marketLists[i].remove("market_listing_item_name", 'mylisting_' + listingid + '_name');
-                marketLists[i].remove("market_listing_item_name", 'mbuyorder_' + listingid + '_name');
+                marketLists[i].remove('market_listing_item_name', 'mylisting_' + listingid + '_name');
+                marketLists[i].remove('market_listing_item_name', 'mbuyorder_' + listingid + '_name');
             }
         }
 
         // Initialize the market UI.
-        function initializeMarketUI() { // eslint-disable-line no-unused-vars
+        function initializeMarketUI() {  
             $('.market_header_text').append('<progress id="see_market_progress" value="1" max="1" hidden>');
             marketProgressBar = document.getElementById('see_market_progress');
 
             // Sell orders.
-            $('.my_market_header').first().append(
-                '<div class="market_listing_buttons">' +
-
-                '<a class="item_market_action_button item_market_action_button_green select_all market_listing_button">' +
-                '<span class="item_market_action_button_contents" style="text-transform:none">Select all</span>' +
-                '</a>' +
-                '<span class="separator-small"></span>' +
-
-                '<a class="item_market_action_button item_market_action_button_green select_five_from_page market_listing_button">' +
-                '<span class="item_market_action_button_contents" style="text-transform:none">Select 5</span>' +
-                '</a>' +
-                '<span class="separator-small"></span>' +
-
-                '<a class="item_market_action_button item_market_action_button_green select_twentyfive_from_page market_listing_button">' +
-                '<span class="item_market_action_button_contents" style="text-transform:none">Select 25</span>' +
-                '</a>' +
-                '<span class="separator-small"></span>' +
-
-                '<a class="item_market_action_button item_market_action_button_green remove_selected market_listing_button">' +
-                '<span class="item_market_action_button_contents" style="text-transform:none">Remove selected</span>' +
-                '</a>' +
-                '<a class="item_market_action_button item_market_action_button_green relist_selected market_listing_button market_listing_button_right">' +
-                '<span class="item_market_action_button_contents" style="text-transform:none">Relist selected</span>' +
-                '</a>' +
-                '<span class="separator-small"></span>' +
-
-                '<a class="item_market_action_button item_market_action_button_green relist_overpriced market_listing_button market_listing_button_right">' +
-                '<span class="item_market_action_button_contents" style="text-transform:none">Relist overpriced</span>' +
-                '</a>' +
-                '<span class="separator-small"></span>' +
-
-                '<a class="item_market_action_button item_market_action_button_green select_overpriced market_listing_button market_listing_button_right">' +
-                '<span class="item_market_action_button_contents" style="text-transform:none">Select overpriced</span>' +
-                '</a>' +
+            $('.my_market_header').first().append('<div class="market_listing_buttons">' +
 
-                '</div>');
+            '<a class="item_market_action_button item_market_action_button_green select_all market_listing_button">' +
+            '<span class="item_market_action_button_contents" style="text-transform:none">Select all</span>' +
+            '</a>' +
+            '<span class="separator-small"></span>' +
+
+            '<a class="item_market_action_button item_market_action_button_green select_five_from_page market_listing_button">' +
+            '<span class="item_market_action_button_contents" style="text-transform:none">Select 5</span>' +
+            '</a>' +
+            '<span class="separator-small"></span>' +
+
+            '<a class="item_market_action_button item_market_action_button_green select_twentyfive_from_page market_listing_button">' +
+            '<span class="item_market_action_button_contents" style="text-transform:none">Select 25</span>' +
+            '</a>' +
+            '<span class="separator-small"></span>' +
+
+            '<a class="item_market_action_button item_market_action_button_green remove_selected market_listing_button">' +
+            '<span class="item_market_action_button_contents" style="text-transform:none">Remove selected</span>' +
+            '</a>' +
+            '<a class="item_market_action_button item_market_action_button_green relist_selected market_listing_button market_listing_button_right">' +
+            '<span class="item_market_action_button_contents" style="text-transform:none">Relist selected</span>' +
+            '</a>' +
+            '<span class="separator-small"></span>' +
+
+            '<a class="item_market_action_button item_market_action_button_green relist_overpriced market_listing_button market_listing_button_right">' +
+            '<span class="item_market_action_button_contents" style="text-transform:none">Relist overpriced</span>' +
+            '</a>' +
+            '<span class="separator-small"></span>' +
+
+            '<a class="item_market_action_button item_market_action_button_green select_overpriced market_listing_button market_listing_button_right">' +
+            '<span class="item_market_action_button_contents" style="text-transform:none">Select overpriced</span>' +
+            '</a>' +
+
+            '</div>');
 
             // Listings confirmations and buy orders.
-            $('.my_market_header').slice(1).append(
-                '<div class="market_listing_buttons">' +
-                '<a class="item_market_action_button item_market_action_button_green select_all market_listing_button">' +
-                '<span class="item_market_action_button_contents" style="text-transform:none">Select all</span>' +
-                '</a>' +
-                '<span class="separator-large"></span>' +
-                '<a class="item_market_action_button item_market_action_button_green remove_selected market_listing_button">' +
-                '<span class="item_market_action_button_contents" style="text-transform:none">Remove selected</span>' +
-                '</a>' +
-                '</div>');
+            $('.my_market_header').slice(1).append('<div class="market_listing_buttons">' +
+            '<a class="item_market_action_button item_market_action_button_green select_all market_listing_button">' +
+            '<span class="item_market_action_button_contents" style="text-transform:none">Select all</span>' +
+            '</a>' +
+            '<span class="separator-large"></span>' +
+            '<a class="item_market_action_button item_market_action_button_green remove_selected market_listing_button">' +
+            '<span class="item_market_action_button_contents" style="text-transform:none">Remove selected</span>' +
+            '</a>' +
+            '</div>');
 
             $('.market_listing_table_header').on('click', 'span', function() {
-                if ($(this).hasClass('market_listing_edit_buttons') || $(this).hasClass('item_market_action_button_contents'))
+                if ($(this).hasClass('market_listing_edit_buttons') || $(this).hasClass('item_market_action_button_contents')) {
                     return;
+                }
 
                 const isPrice = $('.market_listing_table_header', $(this).parent().parent()).children().eq(1).text() == $(this).text();
                 const isDate = $('.market_listing_table_header', $(this).parent().parent()).children().eq(2).text() == $(this).text();
@@ -3292,12 +3506,12 @@
                 const selectionGroup = $(this).parent().parent().parent().parent();
                 const marketList = getListFromContainer(selectionGroup);
 
-                let count = 0
+                let count = 0;
                 for (let i = 0; i < marketList.matchingItems.length; i++) {
-                    if(count == 5){
+                    if (count == 5) {
                         break;
                     }
-                    if(!$('.market_select_item', marketList.matchingItems[i].elm).prop('checked')){
+                    if (!$('.market_select_item', marketList.matchingItems[i].elm).prop('checked')) {
                         $('.market_select_item', marketList.matchingItems[i].elm).prop('checked', true);
                         count += 1;
                     }
@@ -3310,12 +3524,12 @@
                 const selectionGroup = $(this).parent().parent().parent().parent();
                 const marketList = getListFromContainer(selectionGroup);
 
-                let count = 0
+                let count = 0;
                 for (let i = 0; i < marketList.matchingItems.length; i++) {
-                    if(count == 25){
+                    if (count == 25) {
                         break;
                     }
-                    if(!$('.market_select_item', marketList.matchingItems[i].elm).prop('checked')){
+                    if (!$('.market_select_item', marketList.matchingItems[i].elm).prop('checked')) {
                         $('.market_select_item', marketList.matchingItems[i].elm).prop('checked', true);
                         count += 1;
                     }
@@ -3341,8 +3555,9 @@
                 }
 
                 $('.market_listing_row', selectionGroup).each(function() {
-                    if ($(this).hasClass('overpriced'))
+                    if ($(this).hasClass('overpriced')) {
                         $('.market_select_item', $(this)).prop('checked', true);
+                    }
                 });
 
                 updateMarketSelectAllButton();
@@ -3362,7 +3577,7 @@
             });
 
             $('.market_relist_auto').change(function() {
-                setSetting(SETTING_RELIST_AUTOMATICALLY, $('.market_relist_auto').is(":checked") ? 1 : 0);
+                setSetting(SETTING_RELIST_AUTOMATICALLY, $('.market_relist_auto').is(':checked') ? 1 : 0);
             });
 
             $('.relist_overpriced').on('click', '*', function() {
@@ -3401,7 +3616,7 @@
     //#region Tradeoffers
     if (currentPage == PAGE_TRADEOFFER) {
         // Gets the trade offer's inventory items from the active inventory.
-        function getTradeOfferInventoryItems() { // eslint-disable-line no-unused-vars
+        function getTradeOfferInventoryItems() {  
             const arr = [];
 
             for (const child in getActiveInventory().rgChildInventories) {
@@ -3432,7 +3647,7 @@
             return arr;
         }
 
-        function sumTradeOfferAssets(assets, user) { // eslint-disable-line no-unused-vars
+        function sumTradeOfferAssets(assets, user) {  
             const total = {};
             let totalPrice = 0;
             for (let i = 0; i < assets.length; i++) {
@@ -3467,18 +3682,24 @@
                     if (rgItem.type != null && rgItem.type.length > 0) {
                         text += ' (' + rgItem.type + ')';
                     }
-                } else
+                } else {
                     text = 'Unknown Item';
+                }
 
-                if (text in total)
+                if (text in total) {
                     total[text] = total[text] + 1;
-                else
+                } else {
                     total[text] = 1;
+                }
             }
 
             const sortable = [];
-            for (const item in total)
-                sortable.push([item, total[item]])
+            for (const item in total) {
+                sortable.push([
+                    item,
+                    total[item]
+                ]);
+            }
 
             sortable.sort(function(a, b) {
                 return a[1] - b[1];
@@ -3502,13 +3723,15 @@
     function hasLoadedAllTradeOfferItems() {
         for (let i = 0; i < unsafeWindow.g_rgCurrentTradeStatus.them.assets.length; i++) {
             const asset = unsafeWindow.UserThem.findAsset(unsafeWindow.g_rgCurrentTradeStatus.them.assets[i].appid, unsafeWindow.g_rgCurrentTradeStatus.them.assets[i].contextid, unsafeWindow.g_rgCurrentTradeStatus.them.assets[i].assetid);
-            if (asset == null)
+            if (asset == null) {
                 return false;
+            }
         }
         for (let i = 0; i < unsafeWindow.g_rgCurrentTradeStatus.me.assets.length; i++) {
             const asset = unsafeWindow.UserYou.findAsset(unsafeWindow.g_rgCurrentTradeStatus.me.assets[i].appid, unsafeWindow.g_rgCurrentTradeStatus.me.assets[i].contextid, unsafeWindow.g_rgCurrentTradeStatus.me.assets[i].assetid);
-            if (asset == null)
+            if (asset == null) {
                 return false;
+            }
         }
         return true;
 
@@ -3535,8 +3758,9 @@
         };
 
         $('.trade_right > div > div > div > .trade_item_box').observe('childlist subtree', function() {
-            if (!hasLoadedAllTradeOfferItems())
+            if (!hasLoadedAllTradeOfferItems()) {
                 return;
+            }
 
             const currentTradeOfferSum = unsafeWindow.g_rgCurrentTradeStatus.me.assets.length + unsafeWindow.g_rgCurrentTradeStatus.them.assets.length;
             if (lastTradeOfferSum != currentTradeOfferSum) {
@@ -3559,16 +3783,19 @@
         // Load after the inventory is loaded.
         updateInventoryPrices();
 
-        $('#inventory_pagecontrols').observe('childlist',
+        $('#inventory_pagecontrols').observe(
+            'childlist',
             '*',
             function() {
                 updateInventoryPrices();
-            });
+            }
+        );
 
 
         // This only works with a new trade offer.
-        if (!window.location.href.includes('tradeoffer/new'))
+        if (!window.location.href.includes('tradeoffer/new')) {
             return;
+        }
 
         $('#inventory_displaycontrols').append(
             '<br/>' +
@@ -3576,16 +3803,19 @@
             '<a class="item_market_action_button item_market_action_button_green select_all" style="margin-top:1px">' +
             '<span class="item_market_action_button_contents" style="text-transform:none">Select all from page</span>' +
             '</a>' +
-            '</div>');
+            '</div>'
+        );
 
         $('.select_all').on('click', '*', function() {
             $('.inventory_ctn:visible > .inventory_page:visible > .itemHolder:visible').delayedEach(250, function(i, it) {
                 const item = it.rgItem;
-                if (item.is_stackable)
+                if (item.is_stackable) {
                     return;
+                }
 
-                if (!item.tradable)
+                if (!item.tradable) {
                     return;
+                }
 
                 unsafeWindow.MoveItemToTrade(it);
             });
@@ -3595,7 +3825,8 @@
 
     //#region Settings
     function openSettings() {
-        const price_options = $('<div id="price_options">' +
+        const price_options = $(
+            '<div id="price_options">' +
             '<div style="margin-bottom:6px;">' +
             'Calculate prices as the:&nbsp;<select class="price_option_input" style="background-color: black;color: white;border: transparent;" id="' + SETTING_PRICE_ALGORITHM + '">' +
             '<option value="1"' + (getSettingWithDefault(SETTING_PRICE_ALGORITHM) == 1 ? 'selected="selected"' : '') + '>Maximum of the average history and lowest sell listing</option>' +
@@ -3678,7 +3909,8 @@
     //#endregion
 
     //#region UI
-    injectCss('.ui-selected { outline: 2px dashed #FFFFFF; } ' +
+    injectCss(
+        '.ui-selected { outline: 2px dashed #FFFFFF; } ' +
         '#logger { color: #767676; font-size: 12px;margin-top:16px; max-height: 200px; overflow-y: auto; }' +
         '.trade_offer_sum { color: #767676; font-size: 12px;margin-top:8px; }' +
         '.trade_offer_buttons { margin-top: 12px; }' +
@@ -3713,7 +3945,8 @@
         '#see_market_progress[hidden] { visibility: hidden; }' +
         '.pagination { padding-left: 0px; }' +
         '.pagination li { display:inline-block; padding: 5px 10px;background: rgba(255, 255, 255, 0.10); margin-right: 6px; border: 1px solid #666666; }' +
-        '.pagination li.active { background: rgba(255, 255, 255, 0.25); }');
+        '.pagination li.active { background: rgba(255, 255, 255, 0.25); }'
+    );
 
     $(document).ready(function() {
         // Make sure the user is logged in, there's not much we can do otherwise.
@@ -3766,4 +3999,4 @@
         iterator(0);
     };
     //#endregion
-})(jQuery, async);
+}(jQuery, async));
diff --git a/eslint.config.mjs b/eslint.config.mjs
index 792a9f2..dfd253f 100644
--- a/eslint.config.mjs
+++ b/eslint.config.mjs
@@ -1,12 +1,35 @@
-import globals from "globals";
-import pluginJs from "@eslint/js";
+import globals from 'globals';
+import pluginJs from '@eslint/js';
 import userscripts from 'eslint-plugin-userscripts';
+import stylistic from '@stylistic/eslint-plugin';
 
 export default [
   {
     languageOptions: {
       globals: globals.browser
     },
+    plugins: {
+      '@stylistic': stylistic,
+    },
+    ...pluginJs.configs.recommended,
+    ...stylistic.configs['all-flat'],
+    rules: {
+      '@stylistic/function-call-argument-newline': 'off',
+      '@stylistic/multiline-comment-style': 'off',
+      '@stylistic/multiline-ternary': 'off',
+      '@stylistic/newline-per-chained-call': 'off',
+      '@stylistic/padded-blocks': 'off',
+      '@stylistic/quote-props': ['error', 'as-needed'],
+      '@stylistic/quotes': ['error', 'single'],
+      '@stylistic/space-before-function-paren': ['error', 'never'],
+      '@stylistic/spaced-comment': 'off',
+      '@stylistic/brace-style': ['error', '1tbs'],
+      curly: ['error', 'all'],
+      'no-var': 'error',
+      'prefer-const': 'error',
+    }
+  },
+  {
     files: ['*.user.js'],
     plugins: {
       userscripts: {
@@ -15,9 +38,6 @@ export default [
     },
     rules: {
       ...userscripts.configs.recommended.rules,
-      ...pluginJs.configs.recommended.rules,
-      "no-var": "error",
-      "prefer-const": "error",
     },
     settings: {
       userscriptVersions: {
diff --git a/package.json b/package.json
index 7b3eb29..4e9007a 100644
--- a/package.json
+++ b/package.json
@@ -3,10 +3,12 @@
   "name": "@nuklon/steam-economy-enhancer",
   "license": "MIT",
   "scripts": {
+    "fix": "eslint --fix",
     "test": "eslint"
   },
   "devDependencies": {
     "@eslint/js": "^9.5.0",
+    "@stylistic/eslint-plugin": "^2.3.0",
     "eslint": "^9.5.0",
     "eslint-plugin-userscripts": "^0.5.3",
     "globals": "^15.6.0"

From 3887959430da571068fee5667ca0ae7bc78b466a Mon Sep 17 00:00:00 2001
From: Pavel Djundik <xPaw@users.noreply.github.com>
Date: Sat, 20 Jul 2024 11:09:22 +0300
Subject: [PATCH 5/5] Prefer arrow functions

---
 code.user.js      | 270 +++++++++++++++++++++++-----------------------
 eslint.config.mjs |   1 +
 2 files changed, 136 insertions(+), 135 deletions(-)

diff --git a/code.user.js b/code.user.js
index 0b493c2..46a1bbc 100644
--- a/code.user.js
+++ b/code.user.js
@@ -300,7 +300,7 @@
             // Highest average price in the last xx hours.
             const timeAgo = Date.now() - getSettingWithDefault(SETTING_PRICE_HISTORY_HOURS) * 60 * 60 * 1000;
 
-            history.forEach(function(historyItem) {
+            history.forEach((historyItem) => {
                 const d = new Date(historyItem[0]);
                 if (d.getTime() > timeAgo) {
                     highest += historyItem[1] * historyItem[2];
@@ -529,14 +529,14 @@
                 const storage_hash = 'pricehistory_' + appid + '+' + market_name;
 
                 storageSession.getItem(storage_hash).
-                    then(function(value) {
+                    then((value) => {
                         if (value != null) {
                             callback(ERROR_SUCCESS, value, true);
                         } else {
                             market.getCurrentPriceHistory(appid, market_name, callback);
                         }
                     }).
-                    catch(function() {
+                    catch(() => {
                         market.getCurrentPriceHistory(appid, market_name, callback);
                     });
             } else {
@@ -672,7 +672,7 @@
 
         $.get(
             url,
-            function(data) {
+            (data) => {
                 if (!data || !data.success || !data.prices) {
                     callback(ERROR_DATA);
                     return;
@@ -692,7 +692,7 @@
             },
             'json'
         ).
-            fail(function(data) {
+            fail((data) => {
                 if (!data || !data.responseJSON) {
                     return callback(ERROR_FAILED);
                 }
@@ -719,14 +719,14 @@
             const storage_hash = 'itemnameid_' + appid + '+' + market_name;
 
             storagePersistent.getItem(storage_hash).
-                then(function(value) {
+                then((value) => {
                     if (value != null) {
                         callback(ERROR_SUCCESS, value);
                     } else {
                         return market.getCurrentMarketItemNameId(appid, market_name, callback);
                     }
                 }).
-                catch(function() {
+                catch(() => {
                     return market.getCurrentMarketItemNameId(appid, market_name, callback);
                 });
         } catch {
@@ -739,7 +739,7 @@
         const url = window.location.origin + '/market/listings/' + appid + '/' + market_name;
         $.get(
             url,
-            function(page) {
+            (page) => {
                 const matches = (/Market_LoadOrderSpread\( (\d+) \);/).exec(page);
                 if (matches == null) {
                     callback(ERROR_DATA);
@@ -755,7 +755,7 @@
                 callback(ERROR_SUCCESS, item_nameid);
             }
         ).
-            fail(function(e) {
+            fail((e) => {
                 return callback(ERROR_FAILED, e.status);
             });
     };
@@ -791,14 +791,14 @@
             if (cache) {
                 const storage_hash = 'itemordershistogram_' + appid + '+' + market_name;
                 storageSession.getItem(storage_hash).
-                    then(function(value) {
+                    then((value) => {
                         if (value != null) {
                             callback(ERROR_SUCCESS, value, true);
                         } else {
                             market.getCurrentItemOrdersHistogram(item, market_name, callback);
                         }
                     }).
-                    catch(function() {
+                    catch(() => {
                         market.getCurrentItemOrdersHistogram(item, market_name, callback);
                     });
             } else {
@@ -814,7 +814,7 @@
     SteamMarket.prototype.getCurrentItemOrdersHistogram = function(item, market_name, callback) {
         market.getMarketItemNameId(
             item,
-            function(error, item_nameid) {
+            (error, item_nameid) => {
                 if (error) {
                     if (item_nameid != 429) { // 429 = Too many requests made.
                         callback(ERROR_DATA);
@@ -834,7 +834,7 @@
 
                 $.get(
                     url,
-                    function(histogram) {
+                    (histogram) => {
                         // Store the histogram in the session storage.
                         const storage_hash = 'itemordershistogram_' + item.appid + '+' + market_name;
                         storageSession.setItem(storage_hash, histogram);
@@ -842,7 +842,7 @@
                         callback(ERROR_SUCCESS, histogram, false);
                     }
                 ).
-                    fail(function() {
+                    fail(() => {
                         return callback(ERROR_FAILED, null);
                     });
             }
@@ -947,7 +947,7 @@
                 : null;
         if (tags != null) {
             let isTaggedAsCrate = false;
-            tags.forEach(function(arrayItem) {
+            tags.forEach((arrayItem) => {
                 if (arrayItem.category == 'Type') {
                     if (arrayItem.internal_name == 'Supply Crate') {
                         isTaggedAsCrate = true;
@@ -973,7 +973,7 @@
                 : null;
         if (tags != null) {
             let isTaggedAsTradingCard = false;
-            tags.forEach(function(arrayItem) {
+            tags.forEach((arrayItem) => {
                 if (arrayItem.category == 'item_class') {
                     if (arrayItem.internal_name == 'item_class_2') { // trading card.
                         isTaggedAsTradingCard = true;
@@ -1021,7 +1021,7 @@
                 : null;
         if (tags != null) {
             let isTaggedAsFoilTradingCard = false;
-            tags.forEach(function(arrayItem) {
+            tags.forEach((arrayItem) => {
                 if (arrayItem.category == 'cardborder' && arrayItem.internal_name == 'cardborder_1') { // foil border.
                     isTaggedAsFoilTradingCard = true;
                 }
@@ -1223,11 +1223,11 @@
         }
 
         const sellQueue = async.queue(
-            function(task, next) {
+            (task, next) => {
                 market.sellItem(
                     task.item,
                     task.sellPrice,
-                    function(err, data) {
+                    (err, data) => {
                         totalNumberOfProcessedQueueItems++;
 
                         const digits = getNumberOfDigits(totalNumberOfQueuedItems);
@@ -1263,7 +1263,7 @@
                             sellQueue.unshift(task);
                             sellQueue.pause();
 
-                            setTimeout(function() {
+                            setTimeout(() => {
                                 sellQueue.resume();
                             }, getRandomInt(30000, 45000));
                         } else {
@@ -1295,11 +1295,11 @@
 
         function sellAllItems() {
             loadAllInventories().then(
-                function() {
+                () => {
                     const items = getInventoryItems();
                     const filteredItems = [];
 
-                    items.forEach(function(item) {
+                    items.forEach((item) => {
                         if (!item.marketable) {
                             return;
                         }
@@ -1309,7 +1309,7 @@
 
                     sellItems(filteredItems);
                 },
-                function() {
+                () => {
                     logDOM('Could not retrieve the inventory...');
                 }
             );
@@ -1317,12 +1317,12 @@
 
         function sellAllDuplicateItems() {
             loadAllInventories().then(
-                function() {
+                () => {
                     const items = getInventoryItems();
                     const marketableItems = [];
                     let filteredItems = [];
 
-                    items.forEach(function(item) {
+                    items.forEach((item) => {
                         if (!item.marketable) {
                             return;
                         }
@@ -1334,7 +1334,7 @@
 
                     sellItems(filteredItems);
                 },
-                function() {
+                () => {
                     logDOM('Could not retrieve the inventory...');
                 }
             );
@@ -1342,14 +1342,14 @@
 
         function gemAllDuplicateItems() {
             loadAllInventories().then(
-                function() {
+                () => {
                     const items = getInventoryItems();
                     let filteredItems = [];
                     let numberOfQueuedItems = 0;
 
                     filteredItems = items.filter((e, i) => items.map((m) => m.classid).indexOf(e.classid) !== i);
 
-                    filteredItems.forEach(function(item) {
+                    filteredItems.forEach((item) => {
                         if (item.queued != null) {
                             return;
                         }
@@ -1384,7 +1384,7 @@
                         '</div>');
                     }
                 },
-                function() {
+                () => {
                     logDOM('Could not retrieve the inventory...');
                 }
             );
@@ -1392,11 +1392,11 @@
 
         function sellAllCards() {
             loadAllInventories().then(
-                function() {
+                () => {
                     const items = getInventoryItems();
                     const filteredItems = [];
 
-                    items.forEach(function(item) {
+                    items.forEach((item) => {
                         if (!getIsTradingCard(item) || !item.marketable) {
                             return;
                         }
@@ -1406,7 +1406,7 @@
 
                     sellItems(filteredItems);
                 },
-                function() {
+                () => {
                     logDOM('Could not retrieve the inventory...');
                 }
             );
@@ -1414,10 +1414,10 @@
 
         function sellAllCrates() {
             loadAllInventories().then(
-                function() {
+                () => {
                     const items = getInventoryItems();
                     const filteredItems = [];
-                    items.forEach(function(item) {
+                    items.forEach((item) => {
                         if (!getIsCrate(item) || !item.marketable) {
                             return;
                         }
@@ -1426,16 +1426,16 @@
 
                     sellItems(filteredItems);
                 },
-                function() {
+                () => {
                     logDOM('Could not retrieve the inventory...');
                 }
             );
         }
 
-        const scrapQueue = async.queue(function(item, next) {
-            scrapQueueWorker(item, function(success) {
+        const scrapQueue = async.queue((item, next) => {
+            scrapQueueWorker(item, (success) => {
                 if (success) {
-                    setTimeout(function() {
+                    setTimeout(() => {
                         next();
                     }, 250);
                 } else {
@@ -1447,7 +1447,7 @@
                         numberOfFailedRequests = 0;
                     }
 
-                    setTimeout(function() {
+                    setTimeout(() => {
                         next();
                     }, delay);
                 }
@@ -1464,7 +1464,7 @@
 
             market.getGooValue(
                 item,
-                function(err, goo) {
+                (err, goo) => {
                     totalNumberOfProcessedQueueItems++;
 
                     const digits = getNumberOfDigits(totalNumberOfQueuedItems);
@@ -1482,7 +1482,7 @@
 
                     market.grindIntoGoo(
                         item,
-                        function(err) {
+                        (err) => {
                             if (err != ERROR_SUCCESS) {
                                 logConsole('Failed to turn item into gems for ' + itemName);
                                 logDOM(padLeft + ' - ' + itemName + ' not turned into gems due to unknown error.');
@@ -1507,10 +1507,10 @@
             );
         }
 
-        const boosterQueue = async.queue(function(item, next) {
-            boosterQueueWorker(item, function(success) {
+        const boosterQueue = async.queue((item, next) => {
+            boosterQueueWorker(item, (success) => {
                 if (success) {
-                    setTimeout(function() {
+                    setTimeout(() => {
                         next();
                     }, 250);
                 } else {
@@ -1522,7 +1522,7 @@
                         numberOfFailedRequests = 0;
                     }
 
-                    setTimeout(function() {
+                    setTimeout(() => {
                         next();
                     }, delay);
                 }
@@ -1539,7 +1539,7 @@
 
             market.unpackBoosterPack(
                 item,
-                function(err) {
+                (err) => {
                     totalNumberOfProcessedQueueItems++;
 
                     const digits = getNumberOfDigits(totalNumberOfQueuedItems);
@@ -1566,11 +1566,11 @@
         function turnSelectedItemsIntoGems() {
             const ids = getSelectedItems();
 
-            loadAllInventories().then(function() {
+            loadAllInventories().then(() => {
                 const items = getInventoryItems();
 
                 let numberOfQueuedItems = 0;
-                items.forEach(function(item) {
+                items.forEach((item) => {
                     // Ignored queued items.
                     if (item.queued != null) {
                         return;
@@ -1608,7 +1608,7 @@
                     '<div style="text-align:center">Processing ' + numberOfQueuedItems + ' items</div>' +
                     '</div>');
                 }
-            }, function() {
+            }, () => {
                 logDOM('Could not retrieve the inventory...');
             });
         }
@@ -1617,11 +1617,11 @@
         function unpackSelectedBoosterPacks() {
             const ids = getSelectedItems();
 
-            loadAllInventories().then(function() {
+            loadAllInventories().then(() => {
                 const items = getInventoryItems();
 
                 let numberOfQueuedItems = 0;
-                items.forEach(function(item) {
+                items.forEach((item) => {
                     // Ignored queued items.
                     if (item.queued != null) {
                         return;
@@ -1659,13 +1659,13 @@
                     '<div style="text-align:center">Processing ' + numberOfQueuedItems + ' items</div>' +
                     '</div>');
                 }
-            }, function() {
+            }, () => {
                 logDOM('Could not retrieve the inventory...');
             });
         }
 
         function sellSelectedItems() {
-            getInventorySelectedMarketableItems(function(items) {
+            getInventorySelectedMarketableItems((items) => {
                 sellItems(items);
             });
         }
@@ -1676,7 +1676,7 @@
             const contextid = items[0].contextid;
             let hasInvalidItem = false;
 
-            items.forEach(function(item) {
+            items.forEach((item) => {
                 if (item.contextid != contextid || item.commodity == false) {
                     hasInvalidItem = true;
                 }
@@ -1686,7 +1686,7 @@
         }
 
         function sellSelectedItemsManually() {
-            getInventorySelectedMarketableItems(function(items) {
+            getInventorySelectedMarketableItems((items) => {
                 // We have to construct an URL like this
                 // https://steamcommunity.com/market/multisell?appid=730&contextid=2&items[]=Falchion%20Case&qty[]=100
 
@@ -1695,7 +1695,7 @@
 
                 const itemsWithQty = {};
 
-                items.forEach(function(item) {
+                items.forEach((item) => {
                     itemsWithQty[item.market_hash_name] = itemsWithQty[item.market_hash_name] + 1 || 1;
                 });
 
@@ -1708,8 +1708,8 @@
                 const redirectUrl = baseUrl + '?appid=' + appid + '&contextid=' + contextid + itemsString;
 
                 const dialog = unsafeWindow.ShowDialog('Steam Economy Enhancer', '<iframe frameBorder="0" height="650" width="900" src="' + redirectUrl + '"></iframe>');
-                dialog.OnDismiss(function() {
-                    items.forEach(function(item) {
+                dialog.OnDismiss(() => {
+                    items.forEach((item) => {
                         const itemId = item.assetid || item.id;
                         $('#' + item.appid + '_' + item.contextid + '_' + itemId).css('background', COLOR_PENDING);
                     });
@@ -1726,7 +1726,7 @@
 
             let numberOfQueuedItems = 0;
 
-            items.forEach(function(item) {
+            items.forEach((item) => {
                 // Ignored queued items.
                 if (item.queued != null) {
                     return;
@@ -1749,14 +1749,14 @@
             }
         }
 
-        const itemQueue = async.queue(function(item, next) {
+        const itemQueue = async.queue((item, next) => {
             itemQueueWorker(
                 item,
                 item.ignoreErrors,
-                function(success, cached) {
+                (success, cached) => {
                     if (success) {
                         setTimeout(
-                            function() {
+                            () => {
                                 next();
                             },
                             cached ? 0 : getRandomInt(1000, 1500)
@@ -1776,7 +1776,7 @@
                         }
 
                         setTimeout(
-                            function() {
+                            () => {
                                 next();
                             },
                             cached ? 0 : delay
@@ -1795,7 +1795,7 @@
             market.getPriceHistory(
                 item,
                 true,
-                function(err, history, cachedHistory) {
+                (err, history, cachedHistory) => {
                     if (err) {
                         logConsole('Failed to get price history for ' + itemName);
 
@@ -1807,7 +1807,7 @@
                     market.getItemOrdersHistogram(
                         item,
                         true,
-                        function(err, histogram, cachedListings) {
+                        (err, histogram, cachedListings) => {
                             if (err) {
                                 logConsole('Failed to get orders histogram for ' + itemName);
 
@@ -1859,7 +1859,7 @@
             $('.games_list_tabs').on(
                 'click',
                 '*',
-                function() {
+                () => {
                     updateInventoryUI(isOwnInventory);
                 }
             );
@@ -1935,11 +1935,11 @@
         function getInventorySelectedMarketableItems(callback) {
             const ids = getSelectedItems();
 
-            loadAllInventories().then(function() {
+            loadAllInventories().then(() => {
                 const items = getInventoryItems();
                 const filteredItems = [];
 
-                items.forEach(function(item) {
+                items.forEach((item) => {
                     if (!item.marketable) {
                         return;
                     }
@@ -1951,7 +1951,7 @@
                 });
 
                 callback(filteredItems);
-            }, function() {
+            }, () => {
                 logDOM('Could not retrieve the inventory...');
             });
         }
@@ -1960,11 +1960,11 @@
         function getInventorySelectedGemsItems(callback) {
             const ids = getSelectedItems();
 
-            loadAllInventories().then(function() {
+            loadAllInventories().then(() => {
                 const items = getInventoryItems();
                 const filteredItems = [];
 
-                items.forEach(function(item) {
+                items.forEach((item) => {
                     let canTurnIntoGems = false;
                     for (const owner_action in item.owner_actions) {
                         if (item.owner_actions[owner_action].link != null && item.owner_actions[owner_action].link.includes('GetGooValue')) {
@@ -1983,7 +1983,7 @@
                 });
 
                 callback(filteredItems);
-            }, function() {
+            }, () => {
                 logDOM('Could not retrieve the inventory...');
             });
         }
@@ -1992,11 +1992,11 @@
         function getInventorySelectedBoosterPackItems(callback) {
             const ids = getSelectedItems();
 
-            loadAllInventories().then(function() {
+            loadAllInventories().then(() => {
                 const items = getInventoryItems();
                 const filteredItems = [];
 
-                items.forEach(function(item) {
+                items.forEach((item) => {
                     let canOpenBooster = false;
                     for (const owner_action in item.owner_actions) {
                         if (item.owner_actions[owner_action].link != null && item.owner_actions[owner_action].link.includes('OpenBooster')) {
@@ -2015,14 +2015,14 @@
                 });
 
                 callback(filteredItems);
-            }, function() {
+            }, () => {
                 logDOM('Could not retrieve the inventory...');
             });
         }
 
         // Updates the (selected) sell ... items button.
         function updateSellSelectedButton() {
-            getInventorySelectedMarketableItems(function(items) {
+            getInventorySelectedMarketableItems((items) => {
                 const selectedItems = items.length;
                 if (items.length == 0) {
                     $('.sell_selected').hide();
@@ -2042,7 +2042,7 @@
 
         // Updates the (selected) turn into ... gems button.
         function updateTurnIntoGemsButton() {
-            getInventorySelectedGemsItems(function(items) {
+            getInventorySelectedGemsItems((items) => {
                 const selectedItems = items.length;
                 if (items.length == 0) {
                     $('.turn_into_gems').hide();
@@ -2056,7 +2056,7 @@
 
         // Updates the (selected) open ... booster packs button.
         function updateOpenBoosterPacksButton() {
-            getInventorySelectedBoosterPackItems(function(items) {
+            getInventorySelectedBoosterPackItems((items) => {
                 const selectedItems = items.length;
                 if (items.length == 0) {
                     $('.unpack_booster_packs').hide();
@@ -2141,7 +2141,7 @@
             market.getItemOrdersHistogram(
                 item,
                 false,
-                function(err, histogram) {
+                (err, histogram) => {
                     if (err) {
                         logConsole('Failed to get orders histogram for ' + (selectedItem.name || selectedItem.description.name));
                         return;
@@ -2181,7 +2181,7 @@
                     prices = prices.filter((v, i) => prices.indexOf(v) === i).sort((a, b) => a - b);
 
                     let buttons = ' ';
-                    prices.forEach(function(e) {
+                    prices.forEach((e) => {
                         buttons +=
                             '<a class="item_market_action_button item_market_action_button_green quick_sell" id="quick_sell' +
                             e +
@@ -2224,7 +2224,7 @@
 
                     $('.quick_sell_custom').on(
                         'click',
-                        function() {
+                        () => {
                             let price = $('#quick_sell_input', $('#' + item_info_id + '_item_market_actions', item_info)).val() * 100;
                             price = market.getPriceBeforeFees(price);
 
@@ -2285,7 +2285,7 @@
 
             $('#logger').on(
                 'scroll',
-                function() {
+                () => {
                     const hasUserScrolledToBottom =
                         $('#logger').prop('scrollHeight') - $('#logger').prop('clientHeight') <=
                         $('#logger').prop('scrollTop') + 1;
@@ -2301,7 +2301,7 @@
                 $('.sell_all').on(
                     'click',
                     '*',
-                    function() {
+                    () => {
                         sellAllItems();
                     }
                 );
@@ -2320,13 +2320,13 @@
             $('.reload_inventory').on(
                 'click',
                 '*',
-                function() {
+                () => {
                     window.location.reload();
                 }
             );
 
             loadAllInventories().then(
-                function() {
+                () => {
                     const updateInventoryPrices = function() {
                         if (getSettingWithDefault(SETTING_INVENTORY_PRICE_LABELS) == 1) {
                             setInventoryPrices(getInventoryItems());
@@ -2339,12 +2339,12 @@
                     $('#inventory_pagecontrols').observe(
                         'childlist',
                         '*',
-                        function() {
+                        () => {
                             updateInventoryPrices();
                         }
                     );
                 },
-                function() {
+                () => {
                     logDOM('Could not retrieve the inventory...');
                 }
             );
@@ -2352,11 +2352,11 @@
 
         // Loads the specified inventories.
         function loadInventories(inventories) {
-            return new Promise(function(resolve) {
+            return new Promise((resolve) => {
                 inventories.reduce(
-                    function(promise, inventory) {
-                        return promise.then(function() {
-                            return inventory.LoadCompleteInventory().done(function() {});
+                    (promise, inventory) => {
+                        return promise.then(() => {
+                            return inventory.LoadCompleteInventory().done(() => {});
                         });
                     },
                     Promise.resolve()
@@ -2424,7 +2424,7 @@
         function setInventoryPrices(items) {  
             inventoryPriceQueue.kill();
 
-            items.forEach(function(item) {
+            items.forEach((item) => {
                 if (!item.marketable) {
                     return;
                 }
@@ -2438,14 +2438,14 @@
         }
 
         const inventoryPriceQueue = async.queue(
-            function(item, next) {
+            (item, next) => {
                 inventoryPriceQueueWorker(
                     item,
                     false,
-                    function(success, cached) {
+                    (success, cached) => {
                         if (success) {
                             setTimeout(
-                                function() {
+                                () => {
                                     next();
                                 },
                                 cached ? 0 : getRandomInt(1000, 1500)
@@ -2466,7 +2466,7 @@
                                 numberOfFailedRequests = 0;
                             }
 
-                            setTimeout(function() {
+                            setTimeout(() => {
                                 next();
                             }, cached ? 0 : delay);
                         }
@@ -2484,7 +2484,7 @@
             market.getItemOrdersHistogram(
                 item,
                 true,
-                function(err, histogram, cachedListings) {
+                (err, histogram, cachedListings) => {
                     if (err) {
                         logConsole('Failed to get orders histogram for ' + itemName);
 
@@ -2547,14 +2547,14 @@
             }
         }
 
-        const marketListingsQueue = async.queue(function(listing, next) {
+        const marketListingsQueue = async.queue((listing, next) => {
             marketListingsQueueWorker(
                 listing,
                 false,
-                function(success, cached) {
+                (success, cached) => {
                     if (success) {
                         setTimeout(
-                            function() {
+                            () => {
                                 increaseMarketProgress();
                                 next();
                             },
@@ -2562,11 +2562,11 @@
                         );
                     } else {
                         setTimeout(
-                            function() {
+                            () => {
                                 marketListingsQueueWorker(
                                     listing,
                                     true,
-                                    function() {
+                                    () => {
                                         increaseMarketProgress();
                                         next(); // Go to the next queue item, regardless of success.
                                     }
@@ -2668,7 +2668,7 @@
             market.getPriceHistory(
                 item,
                 true,
-                function(errorPriceHistory, history, cachedHistory) {
+                (errorPriceHistory, history, cachedHistory) => {
                     if (errorPriceHistory) {
                         logConsole('Failed to get price history for ' + game_name);
 
@@ -2680,7 +2680,7 @@
                     market.getItemOrdersHistogram(
                         item,
                         true,
-                        function(errorHistogram, histogram, cachedListings) {
+                        (errorHistogram, histogram, cachedListings) => {
                             if (errorHistogram) {
                                 logConsole('Failed to get orders histogram for ' + game_name);
 
@@ -2774,14 +2774,14 @@
         }
 
         const marketOverpricedQueue = async.queue(
-            function(item, next) {
+            (item, next) => {
                 marketOverpricedQueueWorker(
                     item,
                     false,
-                    function(success) {
+                    (success) => {
                         if (success) {
                             setTimeout(
-                                function() {
+                                () => {
                                     increaseMarketProgress();
                                     next();
                                 },
@@ -2789,11 +2789,11 @@
                             );
                         } else {
                             setTimeout(
-                                function() {
+                                () => {
                                     marketOverpricedQueueWorker(
                                         item,
                                         true,
-                                        function() {
+                                        () => {
                                             increaseMarketProgress();
                                             next(); // Go to the next queue item, regardless of success.
                                         }
@@ -2813,18 +2813,18 @@
 
             market.removeListing(
                 item.listing, false,
-                function(errorRemove) {
+                (errorRemove) => {
                     if (!errorRemove) {
                         $('.actual_content', listingUI).css('background', COLOR_PENDING);
 
-                        setTimeout(function() {
+                        setTimeout(() => {
                             const itemName = $('.market_listing_item_name_link', listingUI).first().attr('href');
                             const marketHashNameIndex = itemName.lastIndexOf('/') + 1;
                             const marketHashName = itemName.substring(marketHashNameIndex);
                             const decodedMarketHashName = decodeURIComponent(itemName.substring(marketHashNameIndex));
                             let newAssetId = -1;
 
-                            unsafeWindow.RequestFullInventory(market.inventoryUrl + item.appid + '/' + item.contextid + '/', {}, null, null, function(transport) {
+                            unsafeWindow.RequestFullInventory(market.inventoryUrl + item.appid + '/' + item.contextid + '/', {}, null, null, (transport) => {
                                 if (transport.responseJSON && transport.responseJSON.success) {
                                     const inventory = transport.responseJSON.rgInventory;
 
@@ -2846,11 +2846,11 @@
                                     market.sellItem(
                                         item,
                                         item.sellPrice,
-                                        function(errorSell) {
+                                        (errorSell) => {
                                             if (!errorSell) {
                                                 $('.actual_content', listingUI).css('background', COLOR_SUCCESS);
 
-                                                setTimeout(function() {
+                                                setTimeout(() => {
                                                     removeListingFromLists(item.listing);
                                                 }, 3000);
 
@@ -2902,14 +2902,14 @@
         }
 
         const marketRemoveQueue = async.queue(
-            function(listingid, next) {
+            (listingid, next) => {
                 marketRemoveQueueWorker(
                     listingid,
                     false,
-                    function(success) {
+                    (success) => {
                         if (success) {
                             setTimeout(
-                                function() {
+                                () => {
                                     increaseMarketProgress();
                                     next();
                                 },
@@ -2917,11 +2917,11 @@
                             );
                         } else {
                             setTimeout(
-                                function() {
+                                () => {
                                     marketRemoveQueueWorker(
                                         listingid,
                                         true,
-                                        function() {
+                                        () => {
                                             increaseMarketProgress();
                                             next(); // Go to the next queue item, regardless of success.
                                         }
@@ -2942,12 +2942,12 @@
 
             market.removeListing(
                 listingid, isBuyOrder,
-                function(errorRemove) {
+                (errorRemove) => {
                     if (!errorRemove) {
                         $('.actual_content', listingUI).css('background', COLOR_SUCCESS);
 
                         setTimeout(
-                            function() {
+                            () => {
                                 removeListingFromLists(listingid);
 
                                 const numberOfListings = marketLists[0].size;
@@ -2972,10 +2972,10 @@
         }
 
         const marketListingsItemsQueue = async.queue(
-            function(listing, next) {
+            (listing, next) => {
                 $.get(
                     window.location.origin + '/market/mylistings?count=100&start=' + listing,
-                    function(data) {
+                    (data) => {
                         if (!data || !data.success) {
                             increaseMarketProgress();
                             next();
@@ -2996,7 +2996,7 @@
                     },
                     'json'
                 ).
-                    fail(function() {
+                    fail(() => {
                         increaseMarketProgress();
                         next();
                         return;
@@ -3188,7 +3188,7 @@
                     '<input type="checkbox" class="market_select_item"/>' +
                     '</div>');
 
-                    $('.market_select_item', this).change(function() {
+                    $('.market_select_item', this).change(() => {
                         updateMarketSelectAllButton();
                     });
                 }
@@ -3538,7 +3538,7 @@
                 updateMarketSelectAllButton();
             });
 
-            $('#market_removelisting_dialog_accept').on('click', '*', function() {
+            $('#market_removelisting_dialog_accept').on('click', '*', () => {
                 // This is when a user removed an item through the Remove/Cancel button.
                 // Ideally, it should remove this item from the list (instead of just the UI element which Steam does), but I'm not sure how to get the current item yet.
                 window.location.reload();
@@ -3576,7 +3576,7 @@
                 }
             });
 
-            $('.market_relist_auto').change(function() {
+            $('.market_relist_auto').change(() => {
                 setSetting(SETTING_RELIST_AUTOMATICALLY, $('.market_relist_auto').is(':checked') ? 1 : 0);
             });
 
@@ -3701,7 +3701,7 @@
                 ]);
             }
 
-            sortable.sort(function(a, b) {
+            sortable.sort((a, b) => {
                 return a[1] - b[1];
             }).reverse();
 
@@ -3757,7 +3757,7 @@
             setInventoryPrices(items);
         };
 
-        $('.trade_right > div > div > div > .trade_item_box').observe('childlist subtree', function() {
+        $('.trade_right > div > div > div > .trade_item_box').observe('childlist subtree', () => {
             if (!hasLoadedAllTradeOfferItems()) {
                 return;
             }
@@ -3786,7 +3786,7 @@
         $('#inventory_pagecontrols').observe(
             'childlist',
             '*',
-            function() {
+            () => {
                 updateInventoryPrices();
             }
         );
@@ -3806,8 +3806,8 @@
             '</div>'
         );
 
-        $('.select_all').on('click', '*', function() {
-            $('.inventory_ctn:visible > .inventory_page:visible > .itemHolder:visible').delayedEach(250, function(i, it) {
+        $('.select_all').on('click', '*', () => {
+            $('.inventory_ctn:visible > .inventory_page:visible > .itemHolder:visible').delayedEach(250, (i, it) => {
                 const item = it.rgItem;
                 if (item.is_stackable) {
                     return;
@@ -3885,7 +3885,7 @@
             '</div>' +
             '</div>');
 
-        unsafeWindow.ShowConfirmDialog('Steam Economy Enhancer', price_options).done(function() {
+        unsafeWindow.ShowConfirmDialog('Steam Economy Enhancer', price_options).done(() => {
             setSetting(SETTING_MIN_NORMAL_PRICE, $('#' + SETTING_MIN_NORMAL_PRICE, price_options).val());
             setSetting(SETTING_MAX_NORMAL_PRICE, $('#' + SETTING_MAX_NORMAL_PRICE, price_options).val());
             setSetting(SETTING_MIN_FOIL_PRICE, $('#' + SETTING_MIN_FOIL_PRICE, price_options).val());
@@ -3948,7 +3948,7 @@
         '.pagination li.active { background: rgba(255, 255, 255, 0.25); }'
     );
 
-    $(document).ready(function() {
+    $(document).ready(() => {
         // Make sure the user is logged in, there's not much we can do otherwise.
         if (!isLoggedIn) {
             return;
@@ -3991,7 +3991,7 @@
             const cur = $els[index];
             callback.call(cur, index, cur);
 
-            setTimeout(function() {
+            setTimeout(() => {
                 iterator(++index);
             }, timeout);
         };
diff --git a/eslint.config.mjs b/eslint.config.mjs
index dfd253f..e105c41 100644
--- a/eslint.config.mjs
+++ b/eslint.config.mjs
@@ -27,6 +27,7 @@ export default [
       curly: ['error', 'all'],
       'no-var': 'error',
       'prefer-const': 'error',
+      'prefer-arrow-callback': 'error',
     }
   },
   {