This is not an issue within Storybook, and I'm documenting this here purely for reference/Google-fu.
Yarn is a new alternative to NPM-cli from Facebook. There is a known issue (https://github.com/yarnpkg/yarn/issues/620 and https://github.com/yarnpkg/yarn/issues/709) that prevents it from fully handling scoped packages, such as @kadira/storybook The package gets installed, but yarn outdated command fails with error https://registry.yarnpkg.com/@kadira/storybook: Not found.
The Yarn issue has been reported and waiting for a fix, and until it's resolved there might be this minor frustrations for Storybook devs using Yarn.
Yarn is pretty cool. I hope this will get fixed soon.
The fix has been merged into yarn master with https://github.com/yarnpkg/yarn/pull/1276 so we're just waiting for yarn to cut a new release
Yarn v0.17.0 has been released and it fixes this issue. All good! 馃帀馃帀
@eugene1g Thanks for keeping us updated on this.
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The fix has been merged into yarn master with https://github.com/yarnpkg/yarn/pull/1276 so we're just waiting for yarn to cut a new release