updateing for vercel deploy

Author: CropWatchDevelopment

src/vercel.ts

@@ -0,0 +1,30 @@
+import { NestFactory } from '@nestjs/core';
+import { ExpressAdapter } from '@nestjs/platform-express';
+import { AppModule } from './app.module';
+import express from 'express';
+import { Logger } from '@nestjs/common';
+
+const server = express();
+
+async function bootstrap() {
+  const app = await NestFactory.create(
+    AppModule,
+    new ExpressAdapter(server),
+  );
+  
+  app.enableCors();
+  await app.init();
+  
+  return app;
+}
+
+let cachedApp: any;
+
+export default async function handler(req: any, res: any) {
+  if (!cachedApp) {
+    cachedApp = await bootstrap();
+    Logger.log('NestJS app bootstrapped for serverless');
+  }
+  
+  return server(req, res);
+}

vercel.json

@@ -2,14 +2,14 @@
     "version": 2,
     "builds": [
       {
-        "src": "dist/main.js",
+        "src": "src/vercel.ts",
         "use": "@vercel/node"
       }
     ],
     "routes": [
       {
         "src": "/(.*)",
-        "dest": "src/main.js",
+        "dest": "src/vercel.ts",
         "methods": ["GET", "POST", "PUT", "PATCH", "DELETE", "HEAD", "OPTIONS"]
       }
     ]