yarn

Yarn (1.x)

Be aware npm configurations are valid on the classic version

The classic version is able to regonize the .npmrc file, but also provides their own configuration file named .yarnrc.

To set up a registry, create a file and define a registry.

// .yarnrc
registry "http://localhost:4873"

By using this version you should enable always-auth in your configuration running:

npm config set always-auth true

yarn@1.x does not send the authorization header on yarn install if your packages requires authentication, by enabling always-auth will force yarn do it on each request.

Yarn Berry (>=2.x)

Yarn berry does not recognize --registry or .npmrc file anymore.

For defining a registry you must use the .yarnrc.yml located in the root of your project or global configuration.

When you publish a package the npmRegistryServer must be used. Keep in mind the publishConfig.registry in the package.json will override this configuration.

// .yarnrc.yml
npmRegistryServer: "http://localhost:4873"

unsafeHttpWhitelist:
  - localhost

unsafeHttpWhitelist is only need it if you don't use https with a valid certificate.

Using scopes is also possible and more segmented, you can define a token peer scope if is required.

npmRegistries:
  "https://registry.myverdaccio.org":
    npmAlwaysAuth: true
    npmAuthToken: <TOKEN>
npmScopes:
  my-company:
    npmRegistryServer: https://registry.myverdaccio.org
    npmPublishRegistry: https://registry.myverdaccio.org

for logging via CLi use:

yarn npm login --scope my-company