refactor codebase and pothos structure

src/middlewares/graphql.middleware.ts

@@ -5,7 +5,10 @@ import { Request, Response, NextFunction } from 'express';
 export class GraphQLValidationMiddleware implements NestMiddleware {
   use(req: Request, res: Response, next: NextFunction) {
     // Only handle POST requests
-    if (req.method === 'POST' && req.headers['content-type'] === 'application/json') {
+    if (
+      req.method === 'POST' &&
+      req.headers['content-type'] === 'application/json'
+    ) {
       const { query, mutation, subscription } = req.body;
 
       // If none of these are present, return a custom error response
@@ -13,7 +16,8 @@ export class GraphQLValidationMiddleware implements NestMiddleware {
         return res.status(400).json({
           errors: [
             {
-              message: 'Must provide a valid GraphQL query, mutation, or subscription.',
+              message:
+                'Must provide a valid GraphQL query, mutation, or subscription.',
             },
           ],
         });