Create hello.ts

nextjs/ssr/pages/api/hello.ts

@@ -0,0 +1,12 @@
+import type { NextApiRequest, NextApiResponse } from 'next'
+ 
+type ResponseData = {
+  message: string
+}
+ 
+export default function handler(
+  req: NextApiRequest,
+  res: NextApiResponse<ResponseData>
+) {
+  res.status(200).json({ message: 'Hello from Next.js!' })
+}