Linting fixes.

src/main/http-server/http-server.ts

@@ -2,15 +2,17 @@ import cors from "cors";
 import { app } from "electron";
 import log from "electron-log/main";
 import express from "express";
-import { handleQuickBookRequest } from "../quickbooks-desktop/quickbooks-desktop";
+import http from "http";
 import errorTypeCheck from "../../util/errorTypeCheck";
+import { handleQuickBookRequest } from "../quickbooks-desktop/quickbooks-desktop";
 
 export default class LocalServer {
   private app: express.Application;
-  private server: any;
+  private server: http.Server | null;
   private PORT = 1337;
 
   constructor() {
+    this.server = null;
     this.app = express();
     this.configureMiddleware();
     this.configureRoutes();
@@ -96,10 +98,10 @@ export default class LocalServer {
 
   private configureRoutes(): void {
     // Basic health check endpoint
-    this.app.get("/health", (req: express.Request, res: express.Response) => {
+    this.app.get("/health", (_req: express.Request, res: express.Response) => {
       res.status(200).json({ status: "ok" });
     });
-    this.app.post("/ping", (req, res) => {
+    this.app.post("/ping", (_req, res) => {
       res.status(200).json({
         appVer: app.getVersion(),
         qbPath: app.getPath("userData"), //TODO: Resolve to actual QB file path.
@@ -112,9 +114,11 @@ export default class LocalServer {
 
   public start(): void {
     try {
-      this.server = this.app.listen(this.PORT, (error: Error) => {
+      this.server = this.app.listen(this.PORT, (error: Error | undefined) => {
         if (error) {
-          log.error(`[HTTP Server] Error starting server: ${error}`);
+          log.error(
+            `[HTTP Server] Error starting server: ${errorTypeCheck(error)}`,
+          );
         } else {
           log.info(
             `[HTTP Server] Local HTTP server running on port ${this.PORT}`,