TypeError: Cannot read properties of undefined (reading 'map')

[omerfaran]

Describe the bug
I'm trying to run storybook test runner after installing it (being in nx environment):

npx test-storybook --url http://localhost:4400

And getting the error in the terminal:
[test-storybook] TypeError: Cannot read properties of undefined (reading 'map')

I haven't created a reproduction yet because I'm not sure I'm allowed to. Does anyone know if this is actually a bug, or something I'm missing in the installation?

I'm followed this guide: https://storybook.js.org/addons/@storybook/test-runner
And I'm using pnpm to install packages

Thanks a lot in advance!

System:
OS: Windows 10 10.0.22000 (actually it's Windows 11)
CPU: (24) x64 12th Gen Intel(R) Core(TM) i9-12900K
Binaries:
Node: 16.17.0 - C:\Program Files\nodejs\node.EXE
Yarn: 1.22.19 - ~\AppData\Roaming\npm\yarn.CMD
npm: 8.15.0 - C:\Program Files\nodejs\npm.CMD
Browsers:
Edge: Spartan (44.22000.120.0), Chromium (105.0.1343.33)

[Maybach91]

I have the same issue.

Having this using the 7.0.0-alpha.59 version and want to run just storybook build

info => Loading presets
info => Building manager..
info => Manager built (56 ms)
info => Copying static files: /projectfolder/public at /projectfolder/storybook-static/
ERR! TypeError: Cannot read properties of undefined (reading 'map')
ERR!     at jr (/projectfolder/node_modules/@storybook/core-common/dist/index.js:18:1142)
ERR!     at buildStaticStandalone (/projectfolder/node_modules/@storybook/core-server/dist/cjs/build-static.js:120:62)
ERR!     at async withTelemetry (/projectfolder/node_modules/@storybook/core-server/dist/cjs/withTelemetry.js:63:5)
ERR!     at async qn (/projectfolder/node_modules/@storybook/cli/dist/generate.js:300:460)
ERR!  TypeError: Cannot read properties of undefined (reading 'map')
ERR!     at jr (/projectfolder/node_modules/@storybook/core-common/dist/index.js:18:1142)
ERR!     at buildStaticStandalone (/projectfolder/node_modules/@storybook/core-server/dist/cjs/build-static.js:120:62)
ERR!     at async withTelemetry (/projectfolder/node_modules/@storybook/core-server/dist/cjs/withTelemetry.js:63:5)
ERR!     at async qn (/projectfolder/node_modules/@storybook/cli/dist/generate.js:300:460)

EDIT:
It looks like my stories are the issue. Since I upgraded SB from 5 to 6/7 and did not update the stories itself (just removed deprecated packages). If i pass stories: [] in the main.js then Storybook is rendering, with empty stories. So SB is working fine, i guess. So maybe the stories itself are the issues. @omerfaran perhaps give it a try?

[MatviiStelmakh]

I faced the same for the project using NX, the main config file knows nothing about stories to go through, because of stories: [].
As a workaround, you can make a separate config file for tests (./storybook/test/main.ts) with

stories: [
    ...rootMain.stories, 
    '../../apps/**/*.stories.ts', 
    '../../libs/**/*.stories.ts',
  ],

and call runner with test-storybook --url http://127.0.0.1:4400 --config-dir .storybook/test.

[shilman]

We need to catch this error & let people know they need a stories field in their main.js

Perhaps also add to MIGRATION.md if we somehow supported this in 6.x and chose to remove in 7.0