ProGet Documentation

npm (Node.js)

  • Last Modified: 2020-05-07

A ProGet npm feed is a repository compatible with the npm client for NodeJS. ProGet npm feeds support both scoped and unscoped npm packages.

npm Feed Limitations

The npm client does not support using Windows Integrated Authentication, so ProGet attempts to disable its usage for npm API endpoints in favor of basic HTTP authentication. However, disabling Windows Authentication on a per-URL basis does not work in every environment. If you are having trouble getting this working, you may create a second web site in IIS for ProGet with Windows Authentication disabled without acquiring a separate license.

Build Metadata and

Although the npm semantic versioning documentation mentions support for SemVer2, there is some inconsistency with build metadata (i.e. versions with a "+" symbol in them). The build metadata is not exposed in many queries, where as it is exposed in ProGet queries. When using a connector to, this may present unexpected behavior in the npm client, such as packages not found.

This appears to be limited to a very small number of packages (such as @hot-loader/react-dom; we may change this behavior if it's a continued problem, but please contribute to the discussion at NPM Connector returns plus "+" in versions on the forums.

Creating an npm Feed

Click on the Feeds tab in the navigation bar, and you will see a list of feeds in the system.

Click on the Create New Feed button and select npm.

Supply a value for the Feed name field. This will be the name of your private npm registry, and should contain characters that can be easily typed in a URL. For instance, you could use private-npm.

Click the Create Feed button, and you should be automatically directed to the newly-created registry.

If your ProGet server has access to the Internet, you should see a listing of packages from These are called connector packages, and are not hosted on your ProGet instance, but are transparently proxied from another server.

After you create the npm feed, you can add a connector for directly within your feed or by clicking on the Connectors tab at the top of the page.

This way you can have access to that rich library of packages in addition to your private ones. Connectors also allow filtering, if you would like to include only a subset of external packages; however, no filtering is performed by default. For more information about connectors, see the documentation.

Setting up npm

First, you will need to tell npm where to look for its registry; by default it will be configured for Use the following command, substituting proget for the name name/port of your ProGet server, and private-npm for the name of the npm feed you created above.

[~]$ npm config set registry http://proget/npm/private-npm

Installing Packages

npm packages are installed using npm. To install a package from a ProGet feed, first you will need to set up npm using the above command, then use the following command :

npm install {package-name}@{package-version}

npm Token Authentication

In order to interact with your private registry without using the npm adduser command you will need to follow these steps:

  • Create an API Key - you can create an API Key in ProGet (Admin > API Key & Access Logs) with Feed Access. you can further restrict this key by associating it to a user you've already given specific permissions
  • Encode The API Key - Once the key has been generated you will need to encrypt the key along with the username api. This needs to be encoded in base64 format. Your string prior to encoding should be: api:{APIKEY}

Once you have this token you will need set your _auth value with it using npm. It is also recommended that you set always-auth to true.

[~]$ npm config set always-auth=true
[~]$ npm config set _auth={ENCODEDAPIKEY}

HOWTO: Create a npm API Token

First, create a key by going to ProGet > Admin > API Keys, and entering the value apikey12345 for the key. Make sure that Feed API is checked.

Next, find a base64 encoder; you can search on Google to find a website that can do it for you, or you can use the btoa() function in your browser's development console. The value you'll want to encode is api:apikey12345 -- and the output will be YXBpOmFwaWtleTEyMzQ1.

From there, you can execute the following NPM commands:

  1. Run npm config set always-auth=true
  2. Run npm config set _auth=YXBpOmFwaWtleTEyMzQ1

After that, it should work. Remember, apikey12345 is just a sample value, for illustration purposes; it can be anythying, and should not be the value we use in our documentation.

Publishing a Package

You can also publish packages to ProGet using npm. First, use the adduser command to log in as ProGet's default Admin account, and when prompted for a password, use the same one that you used to log in to ProGet (default is Admin).

[~]$ npm adduser
[~]$ npm publish package.tgz

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This documentation is licensed under CC-BY-SA-4.0 and stored in GitHub.

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