[BUG] Error: Cannot find module './yoga.wasm'

[Jflick58]

Environment

• Platform (select one):
  • [ ] Anthropic API
  • [ ] AWS Bedrock
  • [X] Google Vertex AI
  • [ ] Other:
• Claude CLI version: Can't even get this
• Operating System: MacOS 15.4.1
• Terminal: VS Code terminal and ITerm2

Bug Description

me@mymachine repo % claude
node:internal/modules/cjs/loader:1144
  const err = new Error(message);
              ^

Error: Cannot find module './yoga.wasm'
Require stack:
- /Users/justinflick/.nodenv/versions/20.11.0/lib/node_modules/@anthropic-ai/claude-code/cli.js
    at Module._resolveFilename (node:internal/modules/cjs/loader:1144:15)
    at Function.resolve (node:internal/modules/helpers:187:19)
    at file:///Users/justinflick/.nodenv/versions/20.11.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:610:22809
    at ModuleJob.run (node:internal/modules/esm/module_job:218:25)
    at async ModuleLoader.import (node:internal/modules/esm/loader:329:24)
    at async loadESM (node:internal/process/esm_loader:28:7)
    at async handleMainPromise (node:internal/modules/run_main:113:12) {
  code: 'MODULE_NOT_FOUND',
  requireStack: [
    '/Users/justinflick/.nodenv/versions/20.11.0/lib/node_modules/@anthropic-ai/claude-code/cli.js'
  ]
}

Node.js v20.11.0

Steps to Reproduce

1. Run claude
2. Be sad

Expected Behavior

Claude Code runs.

Actual Behavior

I get an error in the terminal and Claude Code doesn't launch.

Additional Context

Happened after a restart. I had been getting a lot of 529 errors before I restarted.

npm is installed via nodenv.

env vars: export CLAUDE_CODE_USE_VERTEX=1 export CLOUD_ML_REGION=us-east5 export ANTHROPIC_VERTEX_PROJECT_ID=

[younusmahmood]

Happened to me too. I just reinstalled claude but had to manually remove it first, npm uninstall wasnt working so had to do this:

rm -rf /Users/[yourusername]/.nvm/versions/node/v20.10.0/lib/node_modules/@anthropic-ai/claude-code npm install -g @anthropic-ai/claude-code

Hoping it doesn't happen again

[wolffiex]

I think you need to reinstall. This seems like a partial install. We are working on improving our autoupdater to prevent this failure mode.

[pietrobs]

Same here.

I went out to lunch, the computer was left on, when I came back and tried to use it, it was no longer working.

[wolffiex]

for folks having trouble, could you let me know the version? if claude won't start cat /Users/justinflick/.nodenv/versions/20.11.0/lib/node_modules/@anthropic-ai/claude-code/package.json or similar

[Jflick58]

@wolffiex unfortunately I manually uninstalled and reinstalled and that fixed my problem. I'm guessing this may be a bug in the auto-updater based on my and @pietrobs experiences.

[wolffiex]

I think so. I am working on tightening this up today

[BrennerSpear]

pnpm uninstall -g @anthropic-ai/claude-code pnpm install -g @anthropic-ai/claude-code pnpm approve-builds -g

fixed it for me

[iambryansanders]

+1 on this...

[vgkids]

+1, versions:

❯ cat /Users/[REDACTED]/.nvm/versions/node/v18.18.0/lib/node_modules/@anthropic-ai/claude-code/package.json 
{
  "name": "@anthropic-ai/claude-code",
  "version": "0.2.118",
  "bin": {
    "claude": "cli.js"
  },
  "engines": {
    "node": ">=18.0.0"
  },
  "type": "module",
  "author": "Boris Cherny <[email protected]>",
  "license": "SEE LICENSE IN README.md",
  "description": "Use Claude, Anthropic's AI assistant, right from your terminal. Claude can understand your codebase, edit files, run terminal commands, and handle entire workflows for you.",
  "homepage": "https://github.com/anthropics/claude-code",
  "bugs": {
    "url": "https://github.com/anthropics/claude-code/issues"
  },
  "scripts": {
    "prepare": "node -e \"if (!process.env.AUTHORIZED) { console.error('ERROR: Direct publishing is not allowed.\\nPlease use the publish-external.sh script to publish this package.'); process.exit(1); }\"",
    "preinstall": "node scripts/preinstall.js"
  },
  "dependencies": {},
  "optionalDependencies": {
    "@img/sharp-darwin-arm64": "^0.33.5",
    "@img/sharp-linux-arm": "^0.33.5",
    "@img/sharp-linux-x64": "^0.33.5",
    "@img/sharp-win32-x64": "^0.33.5"
  }
}%                                                                                                                                                                                                                

Uninstall / reinstall did not work, but manually removing and installing did:

❯ rm -rf /Users/[REDACTED]/.nvm/versions/node/v18.18.0/lib/node_modules/@anthropic-ai/claude-code
❯ npm i -g @anthropic-ai/claude-code                                                                       

[nikolayv]

Just got this. Should it still be open? Worked 12hrs ago before I went to sleep.

https://claude.ai/share/82017526-bbc2-4d0b-bb59-b896ecf41a6e

Bug Report Summary:

Claude Code Version: 1.0.7 Node.js Version: v18.16.1 NPM Version: 9.5.1 OS: macOS (Apple Silicon - M1/M2 based on "MacBook Air") Error: Missing yoga.wasm module Installation: Global npm install

The issue appears to be that the yoga.wasm file is either:

Not included in the npm package distribution for v1.0.7 Not being correctly resolved relative to the CLI entry point Potentially having architecture-specific issues on Apple Silicon

This is a critical packaging bug that completely prevents Claude Code from running. The yoga library is typically used for flexbox layout calculations, and the .wasm file is a WebAssembly module that needs to be distributed alongside the JavaScript files. When reporting this to Anthropic:

Include all the version numbers you've provided Mention it's a complete blocker (the tool won't start at all) Note that it's affecting a global npm installation on macOS/Apple Silicon

[davidjwiner]

Also running into this with Node 22 on macOS / Apple Silicon.

[ha-le2-ts]

I ran into the same issue. Does anyone know how to install and older version?

node:internal/modules/cjs/loader:1048
  const err = new Error(message);
              ^
Error: Cannot find module './yoga.wasm'

Node.js v20.5.0

[wolffiex]

This isn't an issue with the version, it's an error with a botched update. Assuming you are running with the global node install npm i -g @anthropic-ai/claude-code@latest outta fix it

[chemeris]

@wolffiex I've faced the same issue, and I think I have a lead. Or maybe it's a different issue, I'm not completely sure.

I use pnpm for package management, so I install Claude Code with pnpm i -g @anthropic-ai/claude-code. But the autoupdater is installing into nvm, which creates two copies of the claude-code.

When I had yoga.wasm not found error, I initially tried to re-install claude-code with pnpm to no success, just to realize that nvm installation is actually taking precedence AND that it's lacking yoga.wasm file. I've manually removed nvm copy to switch back to (manually updated) pnpm one, and it started to work.

But now I'm getting ✗ Auto-update failed · Try claude doctor or npm i -g @anthropic-ai/claude-code in the UI every time it tried to autoupdate. And I have to clean up the nvm installation again, and manually install with pnpm.

A theory is that there might be some interference between the pnpm and the nvm copies during the autoupdate.

It would also be great if the autoupdater detects (or asks for) the package manager and uses the one that I'm using to avoid creating a mess with different copies of the same package.

$ which claude
/home/ipse/.nvm/versions/node/v22.15.1/bin/claude
$ ll /home/ipse/.nvm/versions/node/v22.15.1/bin/claude
lrwxrwxrwx 1 ipse ipse 52 Jun  4 11:45 /home/ipse/.nvm/versions/node/v22.15.1/bin/claude -> '../lib/node_modules/@anthropic-ai/claude-code/cli.js'*

$ ll /home/ipse/.local/share/pnpm/global/5/node_modules/@anthropic-ai/claude-code
lrwxrwxrwx 1 ipse ipse 83 Jun  4 18:17 '/home/ipse/.local/share/pnpm/global/5/node_modules/@anthropic-ai/claude-code' -> '../../.pnpm/@[email protected]/node_modules/@anthropic-ai/claude-code'/

PS Really love Claude Code, have been using it a lot over the past couple of weeks.

[PabloRN]

Yeah, same for me. I had to go to .nvm and remove all installed on node versions of claude-code and then install it again.

[jblachly]

Bit me today. I get partial update failures >90% of the time claude code tries to update itself

(platform: Mac)

[Hustada]

rm -rf /Users/[username]/.nvm/versions/node/v22.12.0/lib/node_modules/@anthropic-ai/claude-code

then

npm i -g @anthropic-ai/claude-code@latest

worked for me.

[philote]

rm -rf /Users/[username]/.nvm/versions/node/v22.12.0/lib/node_modules/@anthropic-ai/claude-code

then

npm i -g @anthropic-ai/claude-code@latest

worked for me.

I have had to do this 4 times now. Seems like most reports I see are on Mac's (as am I). It would be nice if this got fixed, it's annoying.

When this happens and I open claude code I see this Auto-update failed · Try claude doctor or npm i -g @anthropic-ai/claude-code

then when I try npm i -g @anthropic-ai/claude-code@latest without 1st removing the node_modules/@anthropic-ai/claude-code folder I get this:

npm i -g @anthropic-ai/claude-code@latest
npm ERR! code ENOTEMPTY
npm ERR! syscall rename
npm ERR! path /Users/<user>/.nvm/versions/node/v21.6.1/lib/node_modules/@anthropic-ai/claude-code
npm ERR! dest /Users/<user>/.nvm/versions/node/v21.6.1/lib/node_modules/@anthropic-ai/.claude-code-ZQimwkIA
npm ERR! errno -66
npm ERR! ENOTEMPTY: directory not empty, rename '/Users/<user>/.nvm/versions/node/v21.6.1/lib/node_modules/@anthropic-ai/claude-code' -> '/Users/<user>/.nvm/versions/node/v21.6.1/lib/node_modules/@anthropic-ai/.claude-code-ZQimwkIA'

npm ERR! A complete log of this run can be found in: /Users/<user>/.npm/_logs/2025-06-14T02_40_35_719Z-debug-0.log

The log:

0 verbose cli /Users/<user>/.nvm/versions/node/v21.6.1/bin/node /Users/<user>/.nvm/versions/node/v21.6.1/bin/npm
1 info using [email protected]
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[Hubert-airspace-intelligence]

https://github.com/oven-sh/bun/issues/15639

It seems the same issue has been solved in 'ink' by replacing yoga-wasm-web dependency with yoga-layout.

I got bit by this today, platform Mac, problem appeared after system update

[vasco3]

I had to update node to the latest TLS. I was in v21

[tylerjames]

Same here.

I went out to lunch, the computer was left on, when I came back and tried to use it, it was no longer working.

Just had the exact same thing happen to me. Going out to lunch seems to be a common denominator.

Has anyone made a Lunch MCP so Claude doesn't feel left out?

[PetrBrabec]

Just happened to me, version: 1.0.31

[wolffiex]

For folks running in to this, are you generally running the global install or the local one? If you have a global install, you can usually recover by going npm install -g @anthropic-ai/claude-code if it's local, the command is cd ~/.claude/local && npm update

Turns out npm update (which we use for the existing autoupdater) has very poor automaticity. This means you can get a partial update that's missing some files. Also note that you can't just copy node_modules/@anthropic-ai/claude-code/cli.js to a new location—it needs the other supporting files like yoga.wasm in its directory.

[jblachly]

For folks running in to this, are you generally running the global install or the local one?

Global

[wolffiex]

If the global install is giving you problems, you can always try claude migrate-installer once you get it running again. You may find the local installer to be a bit more reliable.

[Hustada]

If the global install is giving you problems, you can always try claude migrate-installer once you get it running again. You may find the local installer to be a bit more reliable.

Current version: 1.0.22 Checking for updates... New version available: 1.0.31 (current: 1.0.22) Installing update... Using global installation update method... Error: Failed to install update Or consider migrating to a local installation with: /migrate-installer

claude /migrate-installer ✻ Welcome to Claude Code! /help for help, /status for your current setup cwd: /Users/username/Projects/

It looks like your version of Claude Code (1.0.22) needs an update. A newer version (1.0.24 or higher) is required to continue.

To update, please run:

claude update

This will ensure you have access to the latest features and improvements.

---

Claude Code Local Installer
This will install Claude Code to ~/.claude/local instead of using a global npm installation.
Press Enter to continue or Esc to exit.

username@Macbook %

It just kicks me out of using any commands at all.

---

Using your claude migrate-installer command and then running:

rm -rf /Users/[username]/.nvm/versions/node/v22.12.0/lib/node_modules/@anthropic-ai/claude-code

Then:

npm i -g @anthropic-ai/claude-code@latest

Worked for me — at least for now.
The claude update would crash before.

[wolffiex]

cool, @Hustada we just updated the minimum version so lots of users will be hitting something like this today after migrating the installer, you'll want to source your config file or otherwise add an alias to the install location (usually ~/.claude/local/claude

[du2x]

this is probably because of confusion on which node version you are currently using and the one you were using when installed claude.

[michael-r-martin]

Just happened for me. Issue was claude attempted an auto update while I was in an area of patchy wifi. Guessing the partial install wasn't handled well. Deleting the claude folder was necessary in order to install again.

[AbubakrChan]

sudo rm -rf /opt/homebrew/lib/node_modules/@anthropic-ai/claude-code

The above command worked for me on mac, this way I was able to remove claude code and then I installed it back using

npm i -g @anthropic-ai/claude-code@latest