How to fix npm ERR! code EINVALIDWORKSPACE npm ERR! Workspace name conflicts with dependency name in npm | DevErrors

How to fix "npm ERR! code EINVALIDWORKSPACE npm ERR! Workspace name conflicts with dependency name"

1Check your package.json workspaces configuration

Look at your root package.json and identify all packages:

json

{
  "workspaces": [
    "packages/ui",
    "packages/api",
    "packages/express"
  ]
}

Then check the name field in each workspace's package.json.

2Identify the naming conflict

Compare your workspace package names with your dependencies:

bash

for dir in packages/*/; do
  cat "$dir/package.json" | grep '"name"'
done

If a workspace name matches a dependency name (e.g., both 'express'), you've found the conflict.

3Rename the conflicting workspace package using scoped naming

Use scoped package names for all workspace packages:

In packages/express/package.json, change:

json

{
  "name": "express"
}

To:

json

{
  "name": "@myorg/express"
}

4Update all references to the renamed package

Update references throughout your monorepo:

json

{
  "dependencies": {
    "@myorg/express": "workspace:*"
  }
}

Update imports in your code:

javascript

// Before
import something from 'express';

// After
import something from '@myorg/express';

5Clear npm cache and reinstall

Clean up and reinstall:

bash

rm -rf node_modules package-lock.json
npm cache clean --force
npm install

How to fix npm ERR! code EINVALIDWORKSPACE npm ERR! Workspace name conflicts with dependency name in npm