[NEXT-1092] `next build` compile error regarding export worker #49059

Kazzuk · 2023-05-01T21:43:10Z

Verify canary release

I verified that the issue exists in the latest Next.js canary release

Provide environment information

Operating System:
  Platform: win32
  Arch: x64
  Version: Windows 11 Pro
Binaries:
  Node: 18.16.0
  npm: 9.5.1
  Yarn: N/A
  pnpm: 8.4.0
Relevant packages:
  next: 13.4.1-canary.2
  eslint-config-next: N/A
  react: 18.2.0
  react-dom: 18.2.0

Which area(s) of Next.js are affected? (leave empty if unsure)

App directory (appDir: true), Package manager (npm, pnpm, Yarn), Static HTML Export (output: "export")

Link to the code that reproduces this issue

https://github.com/Kazzuk/reproduce

To Reproduce

Ensure output is set to "export" in next.config.js to cause error.
Run pnpm build.

Describe the Bug

Whenever output is set to "export" in next.config.js and you build the project you will be met with the below error. If I was to remove output from next.config.js the project compiles fine. As well if remove the dynamic routes (delete blog folder) from the project while output is set to "export" the project compiles fine.

> Build error occurred
Error: invariant: Undefined export worker for app dir, this is a bug in Next.js.
    at C:\Users\Kazuk\Documents\GitHub\reproduce\node_modules\.pnpm\next@13.4.1-canary.2_react-dom@18.2.0_react@18.2.0\node_modules\next\dist\export\index.js:506:27
    at Span.traceAsyncFn (C:\Users\Kazuk\Documents\GitHub\reproduce\node_modules\.pnpm\next@13.4.1-canary.2_react-dom@18.2.0_react@18.2.0\node_modules\next\dist\trace\trace.js:103:26)
    at C:\Users\Kazuk\Documents\GitHub\reproduce\node_modules\.pnpm\next@13.4.1-canary.2_react-dom@18.2.0_react@18.2.0\node_modules\next\dist\export\index.js:502:35
    at Array.map (<anonymous>)
    at C:\Users\Kazuk\Documents\GitHub\reproduce\node_modules\.pnpm\next@13.4.1-canary.2_react-dom@18.2.0_react@18.2.0\node_modules\next\dist\export\index.js:499:41
    at async Span.traceAsyncFn (C:\Users\Kazuk\Documents\GitHub\reproduce\node_modules\.pnpm\next@13.4.1-canary.2_react-dom@18.2.0_react@18.2.0\node_modules\next\dist\trace\trace.js:103:20)    
    at async C:\Users\Kazuk\Documents\GitHub\reproduce\node_modules\.pnpm\next@13.4.1-canary.2_react-dom@18.2.0_react@18.2.0\node_modules\next\dist\build\index.js:1887:17
    at async Span.traceAsyncFn (C:\Users\Kazuk\Documents\GitHub\reproduce\node_modules\.pnpm\next@13.4.1-canary.2_react-dom@18.2.0_react@18.2.0\node_modules\next\dist\trace\trace.js:103:20)    
    at async build (C:\Users\Kazuk\Documents\GitHub\reproduce\node_modules\.pnpm\next@13.4.1-canary.2_react-dom@18.2.0_react@18.2.0\node_modules\next\dist\build\index.js:143:29)

Expected Behavior

Build should be successful.

Which browser are you using? (if relevant)

No response

How are you deploying your application? (if relevant)

No response

_{From SyncLinear.com | NEXT-1092}

The text was updated successfully, but these errors were encountered:

mtnowl · 2023-05-02T11:35:43Z

It also seems to go away when you put getStaticParams in dynamic route pages.

alarcndaniela · 2023-05-02T17:59:11Z

I'm having the same issue

detachedsoul · 2023-05-02T19:57:13Z

I'm also having the same issue.

rjruizes · 2023-05-02T21:06:15Z

In my case, fixing my generateStaticParams functions fixed the error. I have 3 dynamic segments in my URL, e.g. /[org]/[dept]/[unit].

[org]/layout.tsx: generateStaticParams returns array for possible values of `org`
  [dept]/layout.tsx: generateStaticParams returns array for possible values of `dept`
    [unit]/page.tsx: generateStaticParams returns array for possible values of `unit`

Doc: https://beta.nextjs.org/docs/api-reference/generate-static-params

Initially I had incorrect values in [unit]/page.tsx and I isolated the problem by removing files one at a time.

mtnowl · 2023-05-03T07:43:14Z

@rjruizes Those child generateStaticParams calls are working for you? I'm getting this bug where the child generateStaticParams are being passed undefined parameters.

alarcndaniela · 2023-05-03T14:29:11Z

@rjruizes This is definitely the root cause for the error in my case, yesterday I moved the files one at a time to a new project and discovered it. Thank you!

rjruizes · 2023-05-03T14:56:05Z

@mtnowl The params are defined for me. I pushed up an example repo to demo it working, see page.tsx.

alarcndaniela · 2023-05-03T15:33:56Z

I just discovered that in my case everytime I add a folder estructure like /dashboard/admin/companies/[id] the error pops up

ytsruh · 2023-05-05T13:55:43Z

Same issue from me. Unable to use build / export whilst using a dyanmic route and client side component.

Error: invariant: Undefined export worker for app dir, this is a bug in Next.js.

alarcndaniela · 2023-05-05T14:52:04Z

I stoped using the last version of nextjs 13 with the experimental app directory and changed it to a project without app and src directory and the build was successfully made

mdmathewdc · 2023-05-06T00:47:48Z

I am also facing the same issue with Next 13.4.1. The document suggestsgenerateStaticParams method to statically generate a dynamic route (https://nextjs.org/docs/app/api-reference/functions/generate-static-params).

But is there an option to make it dynamic if I don't know the props at build time? eg: In my application, I'm generating a unique UUID so that it can be shared as a link - https://xyz.app/play/UUID. How will export the app as a static site then?

The answer to this question is to export the component as a client component as discussed here: https://nextjs.org/docs/app/building-your-application/deploying/static-exports#dynamic-fetching-with-client-components

But even if I export it as a client component, I still get this error.

brandensilva · 2023-05-06T15:56:19Z

The same issue is occurring for me on 13.4.1 but I am doing nothing with params or dynamic routing atm. Only one server side fetch going on and its happening so something else perhaps causing it.

mkarajohn · 2023-05-07T06:46:55Z

I have this issue as well.

Simple reproduction repo: https://codesandbox.io/p/sandbox/hardcore-lehmann-w4hd2f

just run npm run build

If I just move the page.tsx back inside app the error does not come up. Come to think of it, for building it as an SPA, all I need is a single html page, which I can get by moving the page.tsx to the root of the app, but nonetheless, this error exists if only a catch-all route is in play. Maybe it should warn or something, if it's not supposed to be built like that.

If I want to run the app in development mode however I need to have the page.tsx inside the catch-all route, in order to simulate the SPA behaviour, so there is a discrepancy here.

Context

I am moving an existing CRA project over to Next. I have set up the app router so that I have a single catch-all root, like this:

src/
 |-app/
   |-[[...path]]/
   | |-page.tsx
   |-layout.tsx

I am trying to build it as a SPA using the output: 'export' option in the config.

The build fails and the out directory ends up having only a 404.html page.

Error

- info Linting and checking validity of types  
- info Collecting page data  
- info Generating static pages (3/3)
- info Finalizing page optimization  

Route (app)                                Size     First Load JS
┌ λ /[[...path]]                           1.4 kB         79.1 kB
└ ○ /favicon.ico                           0 B                0 B
+ First Load JS shared by all              77.7 kB
  ├ chunks/139-f94b65a583fb7f46.js         24.6 kB
  ├ chunks/2443530c-c1df3a32f9287dc4.js    50.5 kB
  ├ chunks/main-app-f3225843db279bbc.js    221 B
  └ chunks/webpack-33cf70d50500edbd.js     2.37 kB

Route (pages)                              Size     First Load JS
─ ○ /404                                   180 B          86.8 kB
+ First Load JS shared by all              86.6 kB
  ├ chunks/main-3a574163a2858406.js        84.1 kB
  ├ chunks/pages/_app-dec1a83570915fb0.js  195 B
  └ chunks/webpack-33cf70d50500edbd.js     2.37 kB

λ  (Server)  server-side renders at runtime (uses getInitialProps or getServerSideProps)
○  (Static)  automatically rendered as static HTML (uses no initial props)


> Build error occurred
Error: invariant: Undefined export worker for app dir, this is a bug in Next.js.
    at /home/mitch/Workspace/next-projects/project/node_modules/next/dist/export/index.js:506:27
    at Span.traceAsyncFn (/home/mitch/Workspace/next-projects/project/node_modules/next/dist/trace/trace.js:103:26)
    at /home/mitch/Workspace/next-projects/project/node_modules/next/dist/export/index.js:502:35
    at Array.map (<anonymous>)
    at /home/mitch/Workspace/next-projects/project/node_modules/next/dist/export/index.js:499:41
    at async Span.traceAsyncFn (/home/mitch/Workspace/next-projects/project/node_modules/next/dist/trace/trace.js:103:20)
    at async /home/mitch/Workspace/next-projects/project/node_modules/next/dist/build/index.js:1887:17
    at async Span.traceAsyncFn (/home/mitch/Workspace/next-projects/project/node_modules/next/dist/trace/trace.js:103:20)
    at async build (/home/mitch/Workspace/next-projects/project/node_modules/next/dist/build/index.js:143:29)

Setup info

    Operating System:
      Platform: linux
      Arch: x64
      Version: #41~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Fri Mar 31 16:00:14 UTC 2
    Binaries:
      Node: 18.12.1
      npm: 8.19.2
      Yarn: 1.22.19
      pnpm: N/A
    Relevant packages:
      next: 13.4.1-canary.2
      eslint-config-next: 13.4.1
      react: 18.2.0
      react-dom: 18.2.0

jayalmaraz · 2023-05-08T11:19:16Z

+1 getting this error on 13.4.1 & have been getting it since 13.3.2

> Build error occurred
Error: invariant: Undefined export worker for app dir, this is a bug in Next.js.

MCVE: https://github.com/jayalmaraz/20230508-next-13-app-router-static-export-bug

Obviously generateStaticParams isn't a real solution. We are relying on Dynamic Route Segments with Client Component data fetching (documented supported by Static Export), and expecting it to work

macOS 12.6.2
node 16.20.0

- Reverts #48291 - Fixes #49059 - TODO: move these tests to `./tests/e2e/*` to avoid flakes (that will be a follow up PR) fix NEXT-1092

styfle · 2023-05-08T21:24:52Z

This is fixed on the canary channel.

You can try it today with npm install next@canary, thanks!

Yehorchik · 2023-05-09T18:10:20Z

@styfle i just tried it on 13.4.2-canary.3 and it's still has the same issue :(

ytsruh · 2023-05-09T18:27:14Z

@styfle i just tried it on 13.4.2-canary.3 and it's still has the same issue :(

Works fine for me

styfle · 2023-05-09T21:36:18Z

@Yehorchik You might have a different issue. See #48022

@ytsruh Thanks for confirming 👍

nhat-em-wick · 2023-05-10T17:51:53Z

@styfle thanks

Sagar848 · 2023-05-11T15:46:06Z

This is fixed on the canary channel.

You can try it today with npm install next@canary, thanks!

Thanks, this worked

brandensilva · 2023-05-11T16:28:41Z

Also confirmed the fix, thanks.

oldbettie · 2023-06-02T03:53:01Z

confirmed fixed in v13.4.4

Kazzuk added the bug Issue was opened via the bug report template. label May 1, 2023

github-actions bot added the area: app App directory (appDir: true) label May 1, 2023

hopedope mentioned this issue May 4, 2023

[NEXT-1030] output: 'export' with use client in dynamic routes doesn't work #48022

Closed

1 task

styfle added kind: bug and removed bug Issue was opened via the bug report template. labels May 5, 2023

styfle self-assigned this May 5, 2023

styfle changed the title ~~next build compile error regarding export worker~~ [NEXT-1092] next build compile error regarding export worker May 5, 2023

styfle mentioned this issue May 5, 2023

Revert "Temporarily disable app dir export integration test" #49311

Merged

mmrath mentioned this issue May 6, 2023

Undefined export worker for app dir, this is a bug in Next.js. #49367

Closed

1 task

jayalmaraz mentioned this issue May 8, 2023

Workaround broken Next Static Export jayalmaraz/20230508-next-13-app-router-static-export-bug#1

Draft

kodiakhq bot closed this as completed in #49311 May 8, 2023

kodiakhq bot pushed a commit that referenced this issue May 8, 2023

Revert "Temporarily disable app dir export integration test" (#49311)

1c005eb

- Reverts #48291 - Fixes #49059 - TODO: move these tests to `./tests/e2e/*` to avoid flakes (that will be a follow up PR) fix NEXT-1092

vercel locked as resolved and limited conversation to collaborators Jun 2, 2023

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[NEXT-1092] `next build` compile error regarding export worker #49059

[NEXT-1092] `next build` compile error regarding export worker #49059

Kazzuk commented May 1, 2023 •

edited by styfle

mtnowl commented May 2, 2023

alarcndaniela commented May 2, 2023

detachedsoul commented May 2, 2023

rjruizes commented May 2, 2023 •

edited

mtnowl commented May 3, 2023

alarcndaniela commented May 3, 2023

rjruizes commented May 3, 2023 •

edited

alarcndaniela commented May 3, 2023

ytsruh commented May 5, 2023

alarcndaniela commented May 5, 2023

mdmathewdc commented May 6, 2023 •

edited

brandensilva commented May 6, 2023 •

edited

mkarajohn commented May 7, 2023 •

edited

jayalmaraz commented May 8, 2023 •

edited

styfle commented May 8, 2023

Yehorchik commented May 9, 2023

ytsruh commented May 9, 2023

styfle commented May 9, 2023

nhat-em-wick commented May 10, 2023

Sagar848 commented May 11, 2023

brandensilva commented May 11, 2023

oldbettie commented Jun 2, 2023

[NEXT-1092] next build compile error regarding export worker #49059

[NEXT-1092] next build compile error regarding export worker #49059

Comments

Kazzuk commented May 1, 2023 • edited by styfle

Verify canary release

Provide environment information

Which area(s) of Next.js are affected? (leave empty if unsure)

Link to the code that reproduces this issue

To Reproduce

Describe the Bug

Expected Behavior

Which browser are you using? (if relevant)

How are you deploying your application? (if relevant)

mtnowl commented May 2, 2023

alarcndaniela commented May 2, 2023

detachedsoul commented May 2, 2023

rjruizes commented May 2, 2023 • edited

mtnowl commented May 3, 2023

alarcndaniela commented May 3, 2023

rjruizes commented May 3, 2023 • edited

alarcndaniela commented May 3, 2023

ytsruh commented May 5, 2023

alarcndaniela commented May 5, 2023

mdmathewdc commented May 6, 2023 • edited

brandensilva commented May 6, 2023 • edited

mkarajohn commented May 7, 2023 • edited

Context

Error

Setup info

jayalmaraz commented May 8, 2023 • edited

styfle commented May 8, 2023

Yehorchik commented May 9, 2023

ytsruh commented May 9, 2023

styfle commented May 9, 2023

nhat-em-wick commented May 10, 2023

Sagar848 commented May 11, 2023

brandensilva commented May 11, 2023

oldbettie commented Jun 2, 2023

[NEXT-1092] `next build` compile error regarding export worker #49059

[NEXT-1092] `next build` compile error regarding export worker #49059

Kazzuk commented May 1, 2023 •

edited by styfle

rjruizes commented May 2, 2023 •

edited

rjruizes commented May 3, 2023 •

edited

mdmathewdc commented May 6, 2023 •

edited

brandensilva commented May 6, 2023 •

edited

mkarajohn commented May 7, 2023 •

edited

jayalmaraz commented May 8, 2023 •

edited