npm run build failed

[alex-ld]

[email protected]
Next.js 15.1.6
node v23.4.0
"llamaindex": "0.8.2" (installed by create-llama)

Minimum reproducible example:

npx create-llama@latest

npm run build

Failure message:

npm run build

> [email protected] build
> next build

 ⚠ Invalid next.config.mjs options detected: 
 ⚠     Unrecognized key(s) in object: 'serverComponentsExternalPackages' at "experimental"
 ⚠ See more info here: https://nextjs.org/docs/messages/invalid-next-config
 ⚠ `experimental.serverComponentsExternalPackages` has been moved to `serverExternalPackages`. Please update your next.config.mjs file accordingly.
   ▲ Next.js 15.1.6
   - Environments: .env

   Creating an optimized production build ...
 ✓ Compiled successfully
   Linting and checking validity of types  .Failed to compile.

./app/api/chat/engine/generate.ts:1:10
Type error: Module '"llamaindex"' has no exported member 'VectorStoreIndex'.

> 1 | import { VectorStoreIndex } from "llamaindex";
    |          ^
  2 | import { storageContextFromDefaults } from "llamaindex/storage/StorageContext";
  3 |
  4 | import * as dotenv from "dotenv";
Static worker exited with code: 1 and signal: null

---

The minimum example failed with not finding the VectorStoreIndex type definition. In my actual project bootstrapped from create-llama, it also failed with not finding other definitions even after adding them with npm or pnpm

• @types/llamaindex/core
• @types/llamaindex/core/schema
• @types/js-yaml (not relevant to this repo but same behaviour)

However, running the project in dev mode (npm run dev) is completely fine