Add exclusion for QB on non-windows.

src/main/quickbooks-desktop/quickbooks-desktop.ts

@@ -1,4 +1,3 @@
-import * as Winax from "winax";
 import log from "electron-log/main";
 
 import { Request, Response } from "express";
@@ -7,11 +6,25 @@ import errorTypeCheck from "../../util/errorTypeCheck";
 import _ from "lodash";
 import store from "../store/store";
 
+let Winax: any; // Declare Winax as any to avoid TypeScript errors on non-Windows platforms
+
+if (process.platform === "win32") {
+  Winax = require("winax");
+}
+
 export async function handleQuickBookRequest(
   req: Request,
   res: Response,
 ): Promise<void> {
-  //TODO: Add OS sysstem checking. This can only happen on windows machines.
+  if (process.platform !== "win32") {
+    res
+      .status(500)
+      .json({
+        error: "QuickBooks Desktop integration is only available on Windows",
+      });
+    return;
+  }
+
   const QbFilePath: string = `C:\\Users\\PatrickFic\\Development\\FRODO COLLISION.QBW`;
   // ||
   // (store.get("settings.qbFilePath") as string) F
@@ -81,6 +94,10 @@ export async function handleQuickBookRequest(
 
 //This set of functions works.
 export function TestQB(): void {
+  if (process.platform !== "win32") {
+    log.warn("TestQB is only available on Windows");
+    return;
+  }
   let requestProcessor, ticket;
   try {
     requestProcessor = new Winax.Object("QBXMLRP.RequestProcessor.1");