fix(core): Improve logging and error handling by introducing custom error classes and a global logging interface while refactoring network diagnostics methods.

ts/smartnetwork.classes.smartnetwork.ts

@@ -1,6 +1,7 @@
 import * as plugins from './smartnetwork.plugins.js';
 
 import { CloudflareSpeed } from './smartnetwork.classes.cloudflarespeed.js';
+import { getLogger } from './logging.js';
 
 /**
  * SmartNetwork simplifies actions within the network
@@ -37,11 +38,7 @@ export class SmartNetwork {
 
     // test IPv4 space
     const ipv4Test = net.createServer();
-    ipv4Test.once('error', (err: any) => {
-      if (err.code !== 'EADDRINUSE') {
-        doneIpV4.resolve(false);
-        return;
-      }
+    ipv4Test.once('error', () => {
       doneIpV4.resolve(false);
     });
     ipv4Test.once('listening', () => {
@@ -56,11 +53,7 @@ export class SmartNetwork {
 
     // test IPv6 space
     const ipv6Test = net.createServer();
-    ipv6Test.once('error', function (err: any) {
-      if (err.code !== 'EADDRINUSE') {
-        doneIpV6.resolve(false);
-        return;
-      }
+    ipv6Test.once('error', () => {
       doneIpV6.resolve(false);
     });
     ipv6Test.once('listening', () => {
@@ -87,14 +80,15 @@ export class SmartNetwork {
     const domainPart = domainArg.split(':')[0];
     const port = portArg ? portArg : parseInt(domainArg.split(':')[1], 10);
 
-    plugins.isopen(domainPart, port, (response: any) => {
-      console.log(response);
-      if (response[port.toString()].isOpen) {
-        done.resolve(true);
-      } else {
-        done.resolve(false);
-      }
-    });
+    plugins.isopen(
+      domainPart,
+      port,
+      (response: Record<string, { isOpen: boolean }>) => {
+        getLogger().debug(response);
+        const portInfo = response[port.toString()];
+        done.resolve(Boolean(portInfo?.isOpen));
+      },
+    );
     const result = await done.promise;
     return result;
   }
@@ -110,7 +104,7 @@ export class SmartNetwork {
   }> {
     const defaultGatewayName = await plugins.systeminformation.networkInterfaceDefault();
     if (!defaultGatewayName) {
-      console.log('Cannot determine default gateway');
+      getLogger().warn?.('Cannot determine default gateway');
       return null;
     }
     const gateways = await this.getGateways();