AutoTitle not working using storybook 6.4.5, webpack 5 & yarn 3

[amuttsch]

Describe the bug

When creating a story and using the auto title feature of CSF 3, storybook encounter the following error when opening storybook in the browser:

Error reading preview.js:
TypeError: path__WEBPACK_IMPORTED_MODULE_16___default().join is not a function
    autoTitleFromSpecifier autoTitle.js:69
    autoTitle autoTitle.js:77
    addStoriesFromExports StoryStoreFacade.js:181
    getProjectAnnotations start.js:132
    getProjectAnnotations start.js:127
    _runResolutions index.js:217
    _runResolutions index.js:214
    then index.js:67
    getProjectAnnotationsOrRenderError PreviewWeb.js:140
    initialize PreviewWeb.js:118
    configure start.js:148
    configure index.js:21
    js generated-stories-entry.js:6

To Reproduce
Check out my example repo and run:

git clone https://github.com/amuttsch/storybook-yarn3-autotitle.git
cd storybook-yarn3-autotitle
yarn install
yarn storybook

Open http://localhost:6006 and open the browser console. Storybook won't load and the console shows the error above.

I migrated the Button.stories.jsx to CSF3. The current workaround is to give the story an explicit title:

export default {
  component: Button,
  title: 'Button'
};

System
Environment Info:

System:
OS: Linux 5.15 Arch Linux
CPU: (12) x64 Intel(R) Core(TM) i7-8850H CPU @ 2.60GHz
Binaries:
Node: 16.13.0 - /tmp/fnm_multishells/156288_1638539582250/bin/node
Yarn: 3.1.1 - /usr/bin/yarn
npm: 8.1.0 - /tmp/fnm_multishells/156288_1638539582250/bin/npm
Browsers:
Firefox: 94.0.2

Additional context
A workaround is to install path using yarn add path or to fix the package extensions manually in .yarnrc.yml:

packageExtensions:
  "@storybook/store@*":
    dependencies:
      "path": "*"

[shilman]

Yay!! I just released https://github.com/storybookjs/storybook/releases/tag/v6.4.8 containing PR #16913 that references this issue. Upgrade today to the @latest NPM tag to try it out!

npx sb upgrade

Closing this issue. Please re-open if you think there's still more to do.

[amuttsch]

Version 6.4.8 fixed this issue for me, thanks for the fast PR! :-)

[shilman]

Whoopee!! I just released https://github.com/storybookjs/storybook/releases/tag/v6.5.0-alpha.2 containing PR #16913 that references this issue. Upgrade today to the @next NPM tag to try it out!

npx sb upgrade --prerelease