EPIPE -32 when building browser extension

[Denperidge]

Hi! Attempts to build the web extension have been crashing.

Output

$ npx nx serve browser

> nx run browser:serve:chrome-dev

Building Manifest Version 3 app - OSS version
==================================================
envConfig
{
  "devFlags": {
    "managedEnvironment": {
      "base": "https://localhost:8080"
    },
    "skipWelcomeOnInstall": true
  },
  "flags": {
    "accountSwitching": true,
    "sdk": true
  }
}
==================================================
node:events:497
      throw er; // Unhandled 'error' event
      ^

Error: write EPIPE
    at afterWriteDispatched (node:internal/stream_base_commons:159:15)
    at writeGeneric (node:internal/stream_base_commons:150:3)
    at Socket._writeGeneric (node:net:966:11)
    at Socket._write (node:net:978:8)
    at writeOrBuffer (node:internal/streams/writable:572:12)
    at _write (node:internal/streams/writable:501:10)
    at Writable.write (node:internal/streams/writable:510:10)
    at AsyncCompiler.writeStdin (/home/cat/Documents/Programming/bitwarden-clients/node_modules/sass-embedded/dist/lib/src/compiler/async.js:60:28)
    at PacketTransformer.writeInboundBuffer (/home/cat/Documents/Programming/bitwarden-clients/node_modules/sass-embedded/dist/lib/src/compiler/async.js:114:18)
    at PacketTransformer.writeInboundProtobuf (/home/cat/Documents/Programming/bitwarden-clients/node_modules/sass-embedded/dist/lib/src/packet-transformer.js:68:18)
    at MessageTransformer.writeInboundProtobuf (/home/cat/Documents/Programming/bitwarden-clients/node_modules/sass-embedded/dist/lib/src/compiler/async.js:116:146)
    at MessageTransformer.writeInboundMessage (/home/cat/Documents/Programming/bitwarden-clients/node_modules/sass-embedded/dist/lib/src/message-transformer.js:45:18)
    at Dispatcher.writeInboundMessage (/home/cat/Documents/Programming/bitwarden-clients/node_modules/sass-embedded/dist/lib/src/compiler/utils.js:26:123)
    at Dispatcher.sendCompileRequest (/home/cat/Documents/Programming/bitwarden-clients/node_modules/sass-embedded/dist/lib/src/dispatcher.js:112:18)
    at /home/cat/Documents/Programming/bitwarden-clients/node_modules/sass-embedded/dist/lib/src/compiler/async.js:85:77
    at new Promise (<anonymous>)
    at AsyncCompiler.compileRequestAsync (/home/cat/Documents/Programming/bitwarden-clients/node_modules/sass-embedded/dist/lib/src/compiler/async.js:85:33)
    at AsyncCompiler.compileStringAsync (/home/cat/Documents/Programming/bitwarden-clients/node_modules/sass-embedded/dist/lib/src/compiler/async.js:126:21)
    at Object.compileStringAsync (/home/cat/Documents/Programming/bitwarden-clients/node_modules/sass-embedded/dist/lib/src/compile.js:45:31)
    at async Object.loader (/home/cat/Documents/Programming/bitwarden-clients/node_modules/sass-loader/dist/index.js:55:14)
Emitted 'error' event on Socket instance at:
    at emitErrorNT (node:internal/streams/destroy:170:8)
    at emitErrorCloseNT (node:internal/streams/destroy:129:3)
    at process.processTicksAndRejections (node:internal/process/task_queues:90:21) {
  errno: -32,
  code: 'EPIPE',
  syscall: 'write'
}

Node.js v22.21.1

——————————————————————————————————————————————————————————————————————

 NX   Running target serve for project browser failed

Failed tasks:

- browser:serve:chrome-dev

Hint: run the command with --verbose for more details.


[nix-shell:~/Documents/Programming/bitwarden-clients]$ node -v
v22.21.1

[nix-shell:~/Documents/Programming/bitwarden-clients]$ npm -v
10.9.4

Steps taken:

• Followed https://contributing.bitwarden.com/getting-started/clients/
• Followed https://contributing.bitwarden.com/getting-started/clients/browser
• Tried npx nx serve browser & npm run build:watch for Chrome & Firefox
• Tried removing managedEnvironment entry in development.json
• Re-clone & re-run npm ci
• Searched for similar issues on the bitwarden, webpack and sass tools' repos

I'm running a Linux distro (NixOS 25.11)

[alexander-akait]

Looks like a problem in sass-embedded, hard to say what is wrong without reproducible test repo, try to check sass options and try to update sass-embedded