Upgrade backend to Next.js 16

apps/backend/package.json

@@ -8,7 +8,7 @@
     "typecheck": "tsc --noEmit",
     "with-env": "dotenv -c development --",
     "with-env:prod": "dotenv -c --",
-    "dev": "concurrently -n \"dev,codegen,prisma-studio,email-queue\" -k \"next dev --turbopack --port ${NEXT_PUBLIC_STACK_PORT_PREFIX:-81}02\" \"pnpm run codegen:watch\" \"pnpm run prisma-studio\" \"pnpm run run-email-queue\"",
+    "dev": "concurrently -n \"dev,codegen,prisma-studio,email-queue\" -k \"next dev --port ${NEXT_PUBLIC_STACK_PORT_PREFIX:-81}02\" \"pnpm run codegen:watch\" \"pnpm run prisma-studio\" \"pnpm run run-email-queue\"",
     "build": "pnpm run codegen && next build",
     "docker-build": "pnpm run codegen && next build --experimental-build-mode compile",
     "build-self-host-migration-script": "tsup --config scripts/db-migrations.tsup.config.ts",
@@ -45,7 +45,7 @@
   "dependencies": {
     "@ai-sdk/openai": "^1.3.23",
     "@aws-sdk/client-s3": "^3.855.0",
-    "@next/bundle-analyzer": "15.2.3",
+    "@next/bundle-analyzer": "16.0.10",
     "@node-oauth/oauth2-server": "^5.1.0",
     "@opentelemetry/api": "^1.9.0",
     "@opentelemetry/api-logs": "^0.53.0",
@@ -79,15 +79,15 @@
     "freestyle-sandboxes": "^0.0.92",
     "jose": "^5.2.2",
     "json-diff": "^1.0.6",
-    "next": "15.4.9",
+    "next": "16.0.10",
     "nodemailer": "^6.9.10",
     "oidc-provider": "^8.5.1",
     "openid-client": "5.6.4",
     "pg": "^8.16.3",
     "postgres": "^3.4.5",
     "posthog-node": "^4.1.0",
-    "react": "19.0.1",
-    "react-dom": "19.0.1",
+    "react": "19.2.3",
+    "react-dom": "19.2.3",
     "resend": "^6.0.1",
     "semver": "^7.6.3",
     "sharp": "^0.34.4",
@@ -104,8 +104,8 @@
     "@types/node": "20.17.6",
     "@types/nodemailer": "^6.4.14",
     "@types/oidc-provider": "^8.5.1",
-    "@types/react": "19.0.12",
-    "@types/react-dom": "19.0.4",
+    "@types/react": "19.2.7",
+    "@types/react-dom": "19.2.3",
     "@types/semver": "^7.5.8",
     "concurrently": "^8.2.2",
     "glob": "^10.4.1",
@@ -118,8 +118,8 @@
   },
   "pnpm": {
     "overrides": {
-      "@types/react": "19.0.12",
-      "@types/react-dom": "19.0.4"
+      "@types/react": "19.2.7",
+      "@types/react-dom": "19.2.3"
     }
   },
   "packageManager": "pnpm@10.23.0"

apps/backend/src/proxy.tsx

@@ -54,7 +54,7 @@ const corsAllowedResponseHeaders = [
 ];
 
 // This function can be marked `async` if using `await` inside
-export async function middleware(request: NextRequest) {
+export async function proxy(request: NextRequest) {
   const delay = +getEnvVariable('STACK_ARTIFICIAL_DEVELOPMENT_DELAY_MS', '0');
   if (delay) {
     if (getNodeEnvironment().includes('production')) {

apps/backend/tsconfig.json

@@ -14,7 +14,7 @@
     "moduleResolution": "bundler",
     "resolveJsonModule": true,
     "isolatedModules": true,
-    "jsx": "preserve",
+    "jsx": "react-jsx",
     "incremental": true,
     "noErrorTruncation": true,
     "plugins": [
@@ -38,7 +38,8 @@
     "**/*.tsx",
     "**/*.?ts",
     "**/*.?tsx",
-    ".next/types/**/*.ts"
+    ".next/types/**/*.ts",
+    ".next/dev/types/**/*.ts"
   ],
   "exclude": [
     "node_modules"

apps/dashboard/src/components/settings.tsx

@@ -79,7 +79,7 @@ export const SettingSwitch = React.memo(function SettingSwitch(props: {
             disabled={props.disabled}
           />
           <Label className="cursor-pointer" htmlFor={id}>
-            <Typography className="text-sm font-medium leading-none">
+            <Typography type="div" className="text-sm font-medium leading-none">
               {props.label}
             </Typography>
           </Label>