The EINVALIDSCOPE error occurs when npm detects improperly configured scoped package registries in your .npmrc file. This typically happens when authentication tokens are not scoped to specific registries, or when the scope-to-registry mapping is missing or malformed.
npm requires that all scoped packages have a specific registry associated with them. Each scope (like @mycompany) must map to a registry URL, and any authentication credentials must be scoped to that specific registry URL using the //registry-url:_authToken format. When this configuration is invalid or missing, npm throws the EINVALIDSCOPE error.
Check what registry configuration npm is using:
npm config listLook for any lines starting with _auth, _authToken, _password without a registry prefix.
View the file contents:
cat ~/.npmrc
cat .npmrcThe file should contain properly scoped entries:
registry=https://registry.npmjs.org/
@mycompany:registry=https://nexus.mycompany.com/repository/npm/
//nexus.mycompany.com/repository/npm/:_authToken=your_token_hereDelete unscoped credentials:
npm config delete _auth
npm config delete _authToken
npm config delete _password
npm config delete usernameAssociate your scope with the private registry:
npm config set @yourscope:registry https://your-registry-url/Verify:
npm config get @yourscope:registryAdd your authentication token scoped to the specific registry:
npm config set //your-registry-url/:_authToken 'your_auth_token_here'The URL must exactly match the registry URL from your scope configuration.
If setting up a new private registry:
npm login --registry=https://nexus.mycompany.com/repository/npm/ --scope=@mycompanyThis automatically adds properly scoped credentials to your .npmrc.
Verify scoped packages resolve correctly:
npm install @mycompany/my-packageIn npm 9+, the requirements for scoped authentication became stricter. The tool will error if you have unscoped credentials like bare _auth or _authToken. This is a security feature to prevent credentials from being sent to the wrong registry. If you're using CI/CD pipelines, use environment variables instead of committed .npmrc files.
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