PNPM Workspaces + Standalone cannot find module get-network-host upon launch

[eddienubes]

Link to the code that reproduces this issue

https://github.com/eddienubes/next-pnpm-standalone-bug-repro/tree/main

To Reproduce

Preliminary actions

Standard monorepo setup, where one of the projects is next.js.

nvm use # (optionally install)
pnpm install
cd projects/ui
pnpm build
node .next/standalone/server.js # launch fails

Error:

Error: Cannot find module '../../lib/get-network-host'

Current vs. Expected behavior

ER:
Standalone server successfully launches
AR:
Server.js inside standalone folder fails to locate a module ../../lib/get-network-host
with error:

Error: Cannot find module '../../lib/get-network-host'
Require stack:
- /Users/admin/Code/next-bug/projects/ui/node_modules/.pnpm/[email protected][email protected][email protected][email protected][email protected]/node_modules/next/dist/server/lib/start-server.js
- /Users/admin/Code/next-bug/projects/ui/.next/standalone/server.js

Provide environment information

Operating System:
  Platform: darwin
  Arch: arm64
  Version: Darwin Kernel Version 24.3.0: Thu Jan  2 20:24:22 PST 2025; root:xnu-11215.81.4~3/RELEASE_ARM64_T6041
  Available memory (MB): 24576
  Available CPU cores: 12
Binaries:
  Node: 22.13.1
  npm: 10.9.2
  Yarn: N/A
  pnpm: 10.6.1
Relevant Packages:
  next: 15.2.3 // Latest available version is detected (15.2.3).
  eslint-config-next: N/A
  react: 19.0.0
  react-dom: 19.0.0
  typescript: 5.8.2
Next.js Config:
  output: standalone

Which area(s) are affected? (Select all that apply)

Output

Which stage(s) are affected? (Select all that apply)

next build (local)

Additional context

Upon further inspection I noticed that after pnpm install and before pnpm build (next build), the projects/ui/node_modules doesn't have .pnpm folder. The projects/ui/node_modules as expected contains symlinks to the root node_modules/.pnpm with next, react and react-dom packages.

However, after I run next build the contents of projects/ui/node_modules is modified and the .pnpm folder appears with:

• [email protected][email protected][email protected][email protected][email protected]
• [email protected][email protected]
  The tree looks:

node_modules/.pnpm
├── [email protected][email protected][email protected][email protected][email protected]
│   └── node_modules
│       └── next
│           └── dist
│               ├── compiled
│               │   └── jest-worker
│               │       ├── processChild.js
│               │       └── threadChild.js
│               ├── pages
│               │   ├── _app.js
│               │   └── _document.js
│               └── server
│                   ├── lib
│                   │   └── start-server.js
│                   ├── next-server.js
│                   ├── next.js
│                   ├── require-hook.js
│                   └── route-modules
│                       ├── app-page
...
│                       └── pages
...
└── [email protected][email protected]
    └── node_modules
        └── styled-jsx
            ├── index.js
            └── style.js

Almost the same contents appear in the standalone bundle itself:

.next/standalone/node_modules
├── next -> ../../../node_modules/.pnpm/[email protected][email protected][email protected][email protected][email protected]/node_modules/next
└── react -> ../../../node_modules/.pnpm/[email protected]/node_modules/react

So, there's clearly nothing that can resolve to ../../lib/get-network-host.
For some reason the bundle next dist directory is truncated.

[HenriqueSenaDev]

Hello! This seems to be a #48017 replica.
In a nutshel, pnpm centralized storage with synlinks does not woks really well with Next standalone applications.
A workaround is configuring your .npmrc to force the traditional approach (used by npm and yarn) when installing dependencies.
node-linker=hoisted

[eddienubes]

@HenriqueSenaDev
I've seen that issue, however the node-linker=hoisted doesn't seem to have an effect on next build

Indeed, the node_modules directory becomes yarn-like flat and pnpm doesn't even create projects/ui/node_modules, but next build still creates a projects/ui/node_modules by itself with truncated next and styled-jsx packages.

This leads to Error: Cannot find module '../../lib/get-network-host' nevertheless (just tried it again with my repro)