Dev build broken with Turbopack and Next.js 15 latest

[fungilation]

What is the problem?

with Next 15.0.3, blitz dev --turbo:

the error log is misleading (maybe) with the imports in node_modules/blitz/dist/chunks/index-browser.mjs, as the culprit is The export default was not found in module [project]/node_modules/.blitz/turbopack-empty.js [client] (ecmascript).

bisecting which Next version broke this, it started with 15.0.0-rc.1. 15.0.0-rc.0 and 14.x worked fine in dev --turbo

Paste all your error logs here:

with Next 15.0.3, dev --turbo:

with Next 15.0.0-rc.0, dev --turbo:

Paste all relevant code snippets here:

N/A

What are detailed steps to reproduce this?

1. blitz dev --turbo with different Next versions
2. also tested different Blitz versions, isn't a factor. Both 2.0.10 and 2.1.3 lead to same error

Run blitz -v and paste the output here:

macOS Unknown | darwin-x64 | Node: v23.3.0

blitz: 0.45.5 (global)
blitz: 2.1.3 (local)

  Package manager: npm
  System:
    OS: macOS 14.7.1
    CPU: (8) x64 Apple M1
    Memory: 83.97 MB / 16.00 GB
    Shell: 5.9 - /bin/zsh
  Binaries:
    Node: 23.3.0 - /usr/local/bin/node
    Yarn: 1.22.22 - /usr/local/bin/yarn
    npm: 10.9.0 - /usr/local/bin/npm
    Watchman: Not Found
  npmPackages:
    @prisma/client: Not Found
    blitz: 2.1.3 => 2.1.3
    prisma: Not Found
    react: 19.0.0-rc-66855b96-20241106 => 19.0.0-rc-66855b96-20241106
    react-dom: 19.0.0-rc-66855b96-20241106 => 19.0.0-rc-66855b96-20241106
    typescript: ~5.4.5 => 5.4.5

Please include below any other applicable logs and screenshots that show your problem:

No response

[mischnic]

vercel/next.js#73503 (comment):

This is caused by that [project]/node_modules/.blitz/turbopack-empty.js file. So it's not a Turbopack issue but a blitz one.

Turbopack correctly detects that you are trying to import the default export of a file containing export {}. Which would never work.

They should instead try to do module.exports = {} in that file (or something like that using CommonJS), because that can't be statically analyzed.

[Daidalos117]

Is this already fixed? I am still getting the error with blitz 2.2.0.

[fungilation]

It is fixed

…

--- Regards, Gary

On Sun, Jan 12, 2025 at 6:30 AM Roman Rajchert ***@***.***> wrote: Is this already fixed? I am still getting the error with blitz 2.2.0. — Reply to this email directly, view it on GitHub <#4395 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AA5ASSWUXXPZ7WQE6UOMCUD2KJ37VAVCNFSM6AAAAABS7QKHIGVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDKOBVG42TOMRVGA> . You are receiving this because you modified the open/close state.Message ID: ***@***.***>

[Daidalos117]

Yes thank you, I needed to remove node_modules and reinstall. It's working fine now :)

[consuelo-sanna]

Hi guys, I'm still seeing an error after updating Next and blitz to latest versions - looks like it works but I'm just unsure on how to fix the following:

Loaded env from /Users/consuelo/Documents/Projects/provider-web/.env.stag
Loaded env from /Users/consuelo/Documents/Projects/provider-web/.env.local
{
  "errno": -2,
  "code": "ENOENT",
  "syscall": "open",
  "path": "/Users/consuelo/Documents/Projects/next-project/node_modules/next/dist/client/on-recoverable-error.js"
}
✔ Routes manifest was successfully generated
   ▲ Next.js 15.1.6
   - Local:        http://localhost:3000
   - Network:      http://192.168.1.14:3000
   - Environments: .env.local

Can you give me a hand?
are ye also experiencing this?

I think it comes from codegenTasks.mjs and was introduced here #4232 to patch Next 13, I was wondering if it was safe to remove it or if I'm on the wrong track

[Daidalos117]

Getting same error.