npm uses the
_authToken values from the
.npmrc file to authenticate to each registry. The following
.npmrc for example, makes
TOKEN to authenticate to the npm registry:
.npmrc file is stored in the home directory and the values can be viewed and edited using
npm config. The values can be overridden by the
.npmrc configuration in the project root.
Alternatively, the user can log in to a registry using
npm login. This command requires entering the username and password, but all it does is obtain the authentication token and save it to
.npmrc. Saving the token to
.npmrc directly is a great way to "log in" to the npm registry non-interactively which is useful in CI/CD workflows that run
npm install inside Docker.