feat: improve structure and error handling

server/errors/next.ts

@@ -3,6 +3,20 @@ import { NextResponse } from "next/server"
 export function badRequest(body: unknown | string = "Bad request") {
   const resInit = {
     status: 400,
+    statusText: "Bad request",
+  }
+
+  if (typeof body === "string") {
+    return new NextResponse(body, resInit)
+  }
+
+  return NextResponse.json(body, resInit)
+}
+
+export function notFound(body: unknown | string = "Not found") {
+  const resInit = {
+    status: 404,
+    statusText: "Not found",
   }
 
   if (typeof body === "string") {
@@ -17,6 +31,7 @@ export function internalServerError(
 ) {
   const resInit = {
     status: 500,
+    statusText: "Internal Server Error",
   }
 
   if (typeof body === "string") {