Background

• If attempting to publish the first version for a scoped package via yarn release you will get an NPM error:

lerna WARN notice Package failed to publish: @quoll/some-package
lerna ERR! E402 You must sign up for private packages
lerna ERR! errno "undefined" is not a valid exit code - exiting with code 1

• See here. Reason is explained here.

Solution

• Run yarn release as normal, because this will create the tags and update dependencies in the repo.
• Then manually publish the new package.

cd packages/some-package
npm publish --access public

⚠️ This may not be the best solution but it's good enough for now.