Default rawWantedDependency to an empty string in parseWantedDependency, so calling it with undefined or with no arguments no longer throws a TypeError. Add unit tests for parseWantedDependency and a changeset. --------- Co-authored-by: Zoltan Kochan <z@kochan.io> Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>