more optimizations

zefie_wtvp_minisrv/app.js

@@ -29,7 +29,7 @@ const WTVFlashrom = require(classPath + "/WTVFlashrom.js");
 const WTVIRC = require(classPath + "/WTVIRC.js");
 const WTVFTP = require(classPath + "/WTVFTP.js");
 const vm = require('vm');
-const debug = require('debug')('minisrv_main');
+const debug = require('debug')('app');
 const express = require('express');
 
 let wtvirc = null;
@@ -1831,7 +1831,7 @@ async function processRequest(socket, data_hex, skipSecure = false, encryptedReq
                     if (!wtvshared.checkSSID(socket.ssid)) {
                         if (!socket.ssid.startsWith("1SEGA") && !socket.ssid.startsWith("MSTVSIMU")) {
                             // reject invalid SSIDs, but let Dreamcast and MSTV Sim through for now until we figure out their checksumming method.
-                            const errpage = wtvshared.doErrorPage(400, "minisrv ran into a technical problem. Reason: Your SSID is not valid.");
+                            const errpage = wtvshared.doErrorPage(400, `${minisrv_config.config.service_name} ran into a technical problem. Reason: Your SSID is not valid.`);
                             socket.close_me = true;
                             sendToClient(socket, errpage[0], errpage[1]);
                             return;
@@ -2091,7 +2091,7 @@ async function processRequest(socket, data_hex, skipSecure = false, encryptedReq
                             if (socket_sessions[socket.id].expecting_post_data) delete socket_sessions[socket.id].expecting_post_data;
                             socket.setTimeout(minisrv_config.config.socket_timeout * 1000);
                             if (headers.length == 0) {
-                                const errpage = wtvshared.doErrorPage(400, `${minisrv_config.config.service_name} ran into a technical problem, please try again.`);
+                                const errpage = wtvshared.doErrorPage(400);
                                 sendToClient(socket, errpage[0], errpage[1]);
                                 return;
                             }

zefie_wtvp_minisrv/includes/ServiceDeps/templates/wtv-guide/prerendered/Billing/Index.js

@@ -218,7 +218,7 @@ for(var loop = 0; loop < vCount; loop++) {
 				<!-- draw Try It button if the info has been passed from the service -->
 				appUrl = document.formInfo.tryItUrl.value;
 				if (appUrl != "" ) {
-					if ( appUrl.substring(0,10) == "wtv-tricks" ) {
+					if ( appUrl.slice(0,10) == "wtv-tricks" ) {
 						if ( document.formInfo.tryItLabel.value.length == 4 ) {
 							document.write("<input onclick='tryApp()' value='Try " +  document.formInfo.tryItLabel.value + "' borderimage='file://ROM/Borders/ButtonBorder2.bif' type=button usestyle width=110>");
 						} else {

zefie_wtvp_minisrv/includes/ServiceDeps/templates/wtv-guide/prerendered/Mail/Main.js

@@ -224,11 +224,11 @@ document.indexForm.indexSubcat.value = "0";
 drawAll();
 }
 function goToPage(a,b) {	str = subCatUrl[a][b];
-if (str.substring(0,4) == "faq:") {	goToStr = str.substring(4,str.length);
+if (str.slice(0,4) == "faq:") {	goToStr = str.slice(4,str.length);
 goToHelpCenter(goToStr);
-} else if (str.substring(0,9) == "non-help:") {	goToStr = str.substring(9,str.length);
+} else if (str.slice(0,9) == "non-help:") {	goToStr = str.slice(9,str.length);
 goToUrl(goToStr);
-} else if (str.substring(0,7) == "newFAQ:") {	goToStr = str.substring(7,str.length);
+} else if (str.slice(0,7) == "newFAQ:") {	goToStr = str.slice(7,str.length);
 goToFAQURL(goToStr);
 } else {	goToStr = ('wtv-guide:/help?' + str);
 goToUrl(goToStr);
@@ -279,13 +279,13 @@ go back to it. If not, just go to it. If wholeString is
 specified, it looks for perfect matches of the whole string.
 */
 ind = gvnStr.indexOf("wtv-token");
-if (ind > -1) {	gvnStr = gvnStr.substring(0,ind);
+if (ind > -1) {	gvnStr = gvnStr.slice(0,ind);
 }
 window.message("gvnStr=" + gvnStr);
 foundInBackList = false;
 for (i=history.length; i--; i>0 ) {	if ( wholeString != null ) {	testStr = history[i];
 } else {	str = history[i];
-testStr = str.substring(0, gvnStr.length);
+testStr = str.slice(0, gvnStr.length);
 }
 if ( testStr == gvnStr ) {	i++;
 foundInBackList = true;

zefie_wtvp_minisrv/includes/ServiceVault/http_pc/viewergen/index.js

@@ -106,7 +106,7 @@ function getPatchDataType(type, invert = false) {
 
 function getResData(file) {
     var res_data = null;
-    if (file.substr(-2, 2).toLowerCase() == "gz") {
+    if (file.slice(-2, 2).toLowerCase() == "gz") {
         var res_gz_data = wtvshared.getServiceDep("/viewergen/" + file);
         res_data = zlib.gunzipSync(res_gz_data);
     } else {
@@ -228,34 +228,34 @@ function getPatchData(fname, client_data_obj, start_url = "client:GoToConn", def
         if (typeof val === 'string') {
             // start url override
             if (start_url != patch_defaults.start_url && start_url.length <= patch_limits.start_url) {
-                if (val.substr(0, patch_defaults.start_url.length) == patch_defaults.start_url)
+                if (val.slice(0, patch_defaults.start_url.length) == patch_defaults.start_url)
                     customized_patch_data[idx] = start_url + "\x00";
             }
 
             // default service ip override
             if (default_ip != patch_defaults.default_ip && default_ip.length <= patch_limits.default_ip) {
-                if (val.substr(0, patch_defaults.default_ip.length) == patch_defaults.default_ip)
+                if (val.slice(0, patch_defaults.default_ip.length) == patch_defaults.default_ip)
                     customized_patch_data[idx] = default_ip + "\x00";
             }
         } else {
             if (!val.byteLength) {
                 // not a buffer object
                 var block_length = val['length'];
-                var patch_data = getPatchDataType(val['type'], (fname.substr(12, 3) != "1.1"));
+                var patch_data = getPatchDataType(val['type'], (fname.slice(12, 3) != "1.1"));
                 if (patch_data) {
                     var patch_data_array = patch_data.split("\r\n");
                     var patch_data_string = "";
                     Object.keys(patch_data_array).forEach(function (didx) {
                         var header_end = patch_data_array[didx].indexOf(":");
                         if (header_end) {
-                            var patch_data_header = patch_data_array[didx].substr(0, header_end);
+                            var patch_data_header = patch_data_array[didx].slice(0, header_end);
                             var client_value = client_data_obj[patch_data_header];
                             if (client_value)
                                 patch_data_string += patch_data_array[didx].replace("%s", client_value) + "\r\n";
                         }
                     });
                 }
-                if (fname.substr(12, 3) != "2.5") {
+                if (fname.slice(12, 3) != "2.5") {
                     var length_difference = block_length - patch_data_string.length;
                     if (length_difference > 0)
                         patch_data_string += "\x00".repeat(length_difference - (val['type'].length + 1));
@@ -493,8 +493,8 @@ if (request_headers.query.viewer &&
                 var patched_file = patchBinary(patchDataObject);
                 var enabled_feature_bits = [];
                 Object.keys(request_headers.query).forEach((k) => {
-                    if (k.substring(0, 12) === "feature_bit_") {
+                    if (k.slice(0, 12) === "feature_bit_") {
-                        enabled_feature_bits.push(parseInt(k.substring(12)));
+                        enabled_feature_bits.push(parseInt(k.slice(12)));
                     }
                 });
                 Object.keys(enabled_feature_bits).forEach((k) => {
@@ -553,8 +553,8 @@ Content-Disposition: attachment; filename="${viewer_file.replace(".exe", ".zip")
 
                     var embed_modpacks = [];
                     Object.keys(request_headers.query).forEach((k) => {
-                        if (k.substring(0, 8) === "modpack_") {
+                        if (k.slice(0, 8) === "modpack_") {
-                            embed_modpacks.push(parseInt(k.substring(8)));
+                            embed_modpacks.push(parseInt(k.slice(8)));
                         }
                     });
 
@@ -601,9 +601,9 @@ window.onload = function() {
 
 function getSSIDCRC(ssid) {
     let crc = 0;
-    var ssid = ssid.substr(0, 14);
+    var ssid = ssid.slice(0, 14);
     for (let i = 0; i < ssid.length; i += 2) {
-        let inbyte = parseInt(ssid.substring(i, i+2), 16);
+        let inbyte = parseInt(ssid.slice(i, i+2), 16);
 		for (let ii = 8; ii > 0; ii--) {
 		    let mix = (crc ^ inbyte) & 0x01;
 			crc >>= 1;
@@ -667,9 +667,9 @@ function validateSSID(ssid) {
         alert("Please choose a valid SSID and try again.");
         return false;
     }
-    if ((ssid.substr(0,1) != "0" && ssid.substr(0,1) != "8" && ssid.substr(0,1) != "9") ||
+    if ((ssid.slice(0,1) != "0" && ssid.slice(0,1) != "8" && ssid.slice(0,1) != "9") ||
-        (ssid.substr(6,1) != "0") ||
+        (ssid.slice(6,1) != "0") ||
-        (ssid.substr(9,5) != "0b002")) {
+        (ssid.slice(9,5) != "0b002")) {
         alert("Your SSID is not proper, but I'll allow it.")
     }
     return true;

zefie_wtvp_minisrv/includes/ServiceVault/mailto/catchall.js

@@ -1,7 +1,7 @@
 var minisrv_service_file = true;
 
 var mailto = request_headers.request_url;
-mailto = mailto.substring(mailto.indexOf(":") + 1);
+mailto = mailto.slice(mailto.indexOf(":") + 1);
 mailto = mailto.split("?")[0];
 var subject = request_headers.query.subject || "";
 var body = request_headers.query.body || "";

zefie_wtvp_minisrv/includes/ServiceVault/wtv-1800/preregister.js

@@ -143,7 +143,7 @@ if (session_data.data_store.wtvsec_login) {
 				break;
 		}
 
-		if (socket.ssid.substr(0, 8) == "MSTVSIMU") {
+		if (socket.ssid.slice(0, 8) == "MSTVSIMU") {
 			prereg_contype = "text/dialscript";
 			var file_path = wtvshared.getServiceDep("/wtv-1800/tellyscripts/UTV/utv_hsd.tok", true);
 		}

zefie_wtvp_minisrv/includes/classes/WTVAuthor.js

@@ -91,7 +91,7 @@ class WTVAuthor {
 				this.debug("createPage","pages",pages)
 				var pagenums = [];
 				for(let i = 0; i < pagelen; i++) {
-					var toarr = pages[i].substr(0, pages[i].indexOf('.')); 
+					var toarr = pages[i].slice(0, pages[i].indexOf('.')); 
 					pagenums.push(parseInt(toarr));
 				}
 				pagenums = pagenums.sort()
@@ -469,7 +469,7 @@ this.fs.writeFile(destDir + this.wtvclient.session_store.subscriber_username + '
 			break;
 			
 			case "clipart":
-				this.fs.mkdirSync(destDir + this.wtvclient.session_store.subscriber_username + '/' + pagedata.publishname + "/" + atob(thisblock.photo).substr(0, atob(thisblock.photo).lastIndexOf("/")), { recursive: true })
+				this.fs.mkdirSync(destDir + this.wtvclient.session_store.subscriber_username + '/' + pagedata.publishname + "/" + atob(thisblock.photo).slice(0, atob(thisblock.photo).lastIndexOf("/")), { recursive: true })
 				this.fs.copyFile('includes/ServiceVault/wtv-author/' + atob(thisblock.photo), destDir + this.wtvclient.session_store.subscriber_username + '/' + pagedata.publishname + "/" + atob(thisblock.photo), (err) => {
 				if (err) throw err;
 				});
@@ -840,7 +840,7 @@ html += `">next page</a>
 		var publishname = null;
 
 		if (pagedata.published != true) {
-			publishname = pagedata.title.substring(0, 50).replaceAll(" ", "").replace(/[^A-Za-z0-9]/g, "-");
+			publishname = pagedata.title.slice(0, 50).replaceAll(" ", "").replace(/[^A-Za-z0-9]/g, "-");
 			pagedata.publishname = publishname;
 			this.editPage(pagedata, pagenum);
 			if (this.fs.existsSync(destDir + this.wtvclient.session_store.subscriber_username + '/' + publishname)) {
@@ -867,7 +867,7 @@ html += `">next page</a>
 			});
 		}
 		for (let i = 0; i < this.stylemedia.length; i++) {
-			this.fs.mkdirSync(destDir + this.wtvclient.session_store.subscriber_username + '/' + publishname + this.stylemedia[i].substr(0, this.stylemedia[i].lastIndexOf("/")), { recursive: true })
+			this.fs.mkdirSync(destDir + this.wtvclient.session_store.subscriber_username + '/' + publishname + this.stylemedia[i].slice(0, this.stylemedia[i].lastIndexOf("/")), { recursive: true })
 			this.fs.copyFile('includes/ServiceVault/wtv-author' + this.stylemedia[i], destDir + this.wtvclient.session_store.subscriber_username + '/' + publishname + this.stylemedia[i], (err) => {
 				if (err) throw err;
 			});

zefie_wtvp_minisrv/includes/classes/WTVBGMusic.js

@@ -1331,10 +1331,10 @@ class WTVBGMusic {
     getSongCategory(songid) {
         if (String(songid).length === 3) {
             // 3 digit song id
-            return parseInt(String(songid).substr(0, 1));
+            return parseInt(String(songid).slice(0, 1));
         } else if (String(songid).length === 4) {
             // 4 digit song id
-            return parseInt(String(songid).substr(0, 2));
+            return parseInt(String(songid).slice(0, 2));
         }
         return null;
     }
@@ -1353,10 +1353,10 @@ class WTVBGMusic {
             musiclist[k].id = k;
             if (String(category).length === 1) {
                 // 3 digit song id
-                if (parseInt(k.substr(0, 1)) == parseInt(category) && String(k).length === 3) songList.push(musiclist[k]);
+                if (parseInt(k.slice(0, 1)) == parseInt(category) && String(k).length === 3) songList.push(musiclist[k]);
             } else if (String(category).length === 2) {
                 // 4 digit song id
-                if (parseInt(k.substr(0, 2)) == parseInt(category) && String(k).length === 4) songList.push(musiclist[k]);
+                if (parseInt(k.slice(0, 2)) == parseInt(category) && String(k).length === 4) songList.push(musiclist[k]);
             }
         });
         return songList.filter(value => Object.keys(value).length !== 0);

zefie_wtvp_minisrv/includes/classes/WTVClientCapabilities.js

@@ -99,7 +99,7 @@ class WTVClientCapabilities {
                     //In case remaining hex length (or initial) is not multiple of 8
                     var blockSize = remainingSize < 8 ? remainingSize : 8;
 
-                    binary += parseInt(hex.substr(p * 8, blockSize), 16).toString(2);
+                    binary += parseInt(hex.slice(p * 8, blockSize), 16).toString(2);
 
                     remainingSize -= blockSize;
                 }

zefie_wtvp_minisrv/includes/classes/WTVClientSessionData.js

@@ -610,7 +610,7 @@ class WTVClientSessionData {
         Object.keys(cookie_data).forEach(function (k) {
             outstring += k + "=" + escape(cookie_data[k]) + "&";
         });
-        return outstring.substring(0, outstring.length - 1);
+        return outstring.slice(0, outstring.length - 1);
         */
         return cookie_data.cookie;
     }

zefie_wtvp_minisrv/includes/classes/WTVDisk.js

@@ -160,7 +160,7 @@ class WTVDownloadList {
         this.download_list += `file-permission: ${file_permission}\n`;
         if (checksum != null) this.download_list += `wtv-checksum: ${checksum}\n`;
         if (uncompressed_size != null) this.download_list += `wtv-uncompressed-filesize: ${uncompressed_size}\n`;
-        this.download_list += `service-source-location: /webtv/content/${source.substring(source.indexOf('-') + 1, source.indexOf(':/'))}d/${source.substring(source.indexOf(':/') + 2)}\n`;        
+        this.download_list += `service-source-location: /webtv/content/${source.slice(source.indexOf('-') + 1, source.indexOf(':/'))}d/${source.slice(source.indexOf(':/') + 2)}\n`;        
         this.download_list += `client-dest-location: ${path}\n\n`;
     }
 
@@ -182,7 +182,7 @@ class WTVDownloadList {
         if (typeof post_data == 'string') post_data = post_data.split("\n\n");
         const group_data = [];
         post_data.forEach(function (v) {
-            if (v.substring(0, 4) == "file") {
+            if (v.slice(0, 4) == "file") {
                 const block_split = v.split("\n");
                 const group_data_entry = {};
                 group_data_entry.path = block_split[0];

zefie_wtvp_minisrv/includes/classes/WTVFlashrom.js

@@ -103,7 +103,7 @@ class WTVFlashrom {
 
 		if (this.minisrv_config.config.debug_flags.debug && this.minisrv_config.config.debug_flags.quiet) console.log(" # Sending", (flashrom_info.is_last_part) ? "Last Flashrom" : "Flashrom", "Part", flashrom_info.part_number, "- Bytes Sent:", flashrom_info.byte_progress + flashrom_info.part_total_size, "of", flashrom_info.total_parts_size, "(" + flashrom_info.percent_complete + " % complete)");
 		// read current part display message from part header
-		flashrom_info.message = new Buffer.from(part_header.toString('hex').substring(36 * 2, 68 * 2), 'hex').toString('ascii').replace(/[^0-9a-z\ \.\-]/gi, "");
+		flashrom_info.message = new Buffer.from(part_header.toString('hex').slice(36 * 2, 68 * 2), 'hex').toString('ascii').replace(/[^0-9a-z\ \.\-]/gi, "");
 		flashrom_info.rompath = `wtv-flashrom:/${path}`;
 
 		if (flashrom_info.is_last_part && this.bf0app_update) {

zefie_wtvp_minisrv/includes/classes/WTVGuide.js

@@ -70,28 +70,28 @@ class WTVGuide {
 								var start = start + search.length;
 								original_start = start;
 								// handle <word="whatever">
-								if (definition.substr(start, 1) != ">") {
+								if (definition.slice(start, 1) != ">") {
 									start++; // +1 to skip =
 									end = definition.indexOf(">", start);
-									link_word_override = definition.substring(start, end);
+									link_word_override = definition.slice(start, end);
 									// strip any quotes
-									if (link_word_override.substr(0, 1).match(/[\"\']/)) link_word_override = link_word_override.substring(1);
+									if (link_word_override.slice(0, 1).match(/[\"\']/)) link_word_override = link_word_override.slice(1);
-									if (link_word_override.substr(link_word_override.length - 1, 1).match(/[\"\']/)) link_word_override = link_word_override.substr(0, link_word_override.length - 1);
+									if (link_word_override.slice(link_word_override.length - 1, 1).match(/[\"\']/)) link_word_override = link_word_override.slice(0, link_word_override.length - 1);
 
 									link_word_for_link = link_word_override.replace(/ /g, '').replace(/\'/g, '').replace(/\"/g, '').toLowerCase();
-									link_word_start_letter = link_word_for_link.substr(0, 1).toUpperCase();
+									link_word_start_letter = link_word_for_link.slice(0, 1).toUpperCase();
 									start = end + 1; // update start pos for rest of processing
 								} else {
 									start++;
 								}
 								end = definition.indexOf("</word>", start);
-								var link_word = definition.substring(start, end);
+								var link_word = definition.slice(start, end);
 								if (!link_word_for_link) link_word_for_link = link_word.replace(/ /g, '').replace(/\'/g,'').replace(/\"/g,'').toLowerCase();
-								if (!link_word_start_letter) link_word_start_letter = link_word.substr(0, 1).toUpperCase();
+								if (!link_word_start_letter) link_word_start_letter = link_word.slice(0, 1).toUpperCase();
 								if (!link_word_override) link_word_override = link_word;
 
 								var link_url = `wtv-guide:/help?topic=Glossary&subtopic=${link_word_start_letter}&page=${link_word_for_link}&word=${encodeURIComponent(link_word_override)}`
-								var new_definition = definition.substring(0, original_start - search.length) + `<a href="${link_url}">${link_word}</a>` + definition.substring(end + 7);
+								var new_definition = definition.slice(0, original_start - search.length) + `<a href="${link_url}">${link_word}</a>` + definition.slice(end + 7);
 								definition = new_definition;
 							}
 							// replaces <boxname> with the friendly name of the type of unit the user has

zefie_wtvp_minisrv/includes/classes/WTVMail.js

@@ -328,7 +328,7 @@ class WTVMail {
                     else return a.time - b.time;
                 })
                 .map(function (v) {
-                    if (v.name.substring((v.name.length - self.msgFileExt.length)) === self.msgFileExt) return v.name.substring(0, (v.name.length - 5));
+                    if (v.name.slice((v.name.length - self.msgFileExt.length)) === self.msgFileExt) return v.name.slice(0, (v.name.length - 5));
                 });
 
             if (files.length == 0) return false; // no messages
@@ -398,7 +398,7 @@ class WTVMail {
                         var path_after_replace = search_dir.replace(accounts_dir, '');
                         // Remove leading path separator if present
                         if (path_after_replace.startsWith(self.path.sep)) {
-                            path_after_replace = path_after_replace.substring(1);
+                            path_after_replace = path_after_replace.slice(1);
                         }
                         var path_split = path_after_replace.split(self.path.sep);
                         // The path should be like "ssid/user0", so extract ssid and user_id

zefie_wtvp_minisrv/includes/classes/WTVMinifyingProxy.js

@@ -292,7 +292,7 @@ class WTVMinifyingProxy {
         for (const [selector, styles] of cssRules) {
             if (selector.startsWith('.')) {
                 // Handle class selectors (e.g., .lst)
-                const className = selector.substring(1);
+                const className = selector.slice(1);
                 const regex = new RegExp(`<(input[^>]*class\\s*=\\s*["'][^"']*\\b${className}\\b[^"']*["'][^>]*)>`, 'gi');
                 html = html.replace(regex, (match, tagContent) => {
                     // Convert CSS styles to attributes for this element (input tag)
@@ -545,7 +545,7 @@ class WTVMinifyingProxy {
             // No body tag found, extract everything after head or use all content
             const headEndMatch = html.match(/<\/head>/i);
             if (headEndMatch) {
-                bodyContent = html.substring(html.indexOf(headEndMatch[0]) + headEndMatch[0].length);
+                bodyContent = html.slice(html.indexOf(headEndMatch[0]) + headEndMatch[0].length);
             } else {
                 bodyContent = html;
             }
@@ -711,19 +711,19 @@ ${bodyContent}
     intelligentTruncate(content, maxLength) {
         if (content.length <= maxLength) return content;
         
-        let truncated = content.substring(0, maxLength);
+        let truncated = content.slice(0, maxLength);
         
         // Try to cut at a tag boundary
         const lastCloseTag = truncated.lastIndexOf('>');
         const lastOpenTag = truncated.lastIndexOf('<');
         
         if (lastCloseTag > lastOpenTag) {
-            truncated = truncated.substring(0, lastCloseTag + 1);
+            truncated = truncated.slice(0, lastCloseTag + 1);
         } else {
             // Cut at word boundary
             const lastSpace = truncated.lastIndexOf(' ');
             if (lastSpace > maxLength * 0.8) { // Only if we don't lose too much
-                truncated = truncated.substring(0, lastSpace);
+                truncated = truncated.slice(0, lastSpace);
             }
         }
         
@@ -769,7 +769,7 @@ ${bodyContent}
             // No body tag found, extract content after head or use transformed content
             const headEndMatch = transformed.match(/<\/head>/i);
             if (headEndMatch) {
-                bodyContent = transformed.substring(transformed.indexOf(headEndMatch[0]) + headEndMatch[0].length);
+                bodyContent = transformed.slice(transformed.indexOf(headEndMatch[0]) + headEndMatch[0].length);
             } else {
                 bodyContent = transformed;
             }

zefie_wtvp_minisrv/includes/classes/WTVNewsServer.js

@@ -94,7 +94,7 @@ class WTVNewsServer {
                     Object.keys(message.headers).forEach((k) => {
                         if (k.length > 0) out += `${k}: ${message.headers[k]}\r\n`;
                     });
-                    out = out.substr(0, out.length - 2);
+                    out = out.slice(0, out.length - 2);
                     return out;
                 },
 

zefie_wtvp_minisrv/includes/classes/WTVTellyScript.js

@@ -229,7 +229,7 @@ class WTVTellyScriptTokenizer {
             // Process as a constant.
             let hexString = "";
             if (checkSequence.startsWith("0x") || checkSequence.startsWith("0X")) {
-                hexString = checkSequence.substring(2);
+                hexString = checkSequence.slice(2);
             } else {
                 hexString = parseInt(checkSequence, 10).toString(16).toUpperCase();
             }