[Bug]: Storybook upgrade automigration hangs forever

[bourpie]

Describe the bug

After succesfully updating package.json, Automigration runs forever :

PS C:\Git\Storybook> npx storybook@latest upgrade

┌  Storybook Upgrade - v9.1.8
│
◇  1 project detected
│
●  Upgrading from 8.4.7 to 9.1.8
│
◆  Updated package versions in package.json files
│
◆  4 automigration(s) detected
│
◆  Select automigrations to run
│  ◼ consolidated-imports (We've detected Storybook packages that have been
│    renamed or consolidated. We'll update these packages by scanning your codebase
│    and updating any imports from these packages.
│    More info: https://github.com/storybookjs/storybook/blob/next/MIGRATION.md#dr...)
│  ◼ remove-addon-interactions (@storybook/addon-interactions has been moved to
│    Storybook core and will be removed from your configuration.
│    More info: https://github.com/storybookjs/storybook/blob/next/MIGRATION.md#es...)
│  ◼ renderer-to-framework (We're moving from renderer-based to framework-based
│    configuration and update your imports and dependencies accordingly.
│    More info: https://github.com/storybookjs/storybook/blob/next/MIGRATION.md#mo...)
│  ◼ remove-essential-addons (In Storybook 9.0, several addons have been moved
│    into Storybook's core and are no longer needed as separate packages. We'll
│    remove the unnecessary addons from your configuration and dependencies, and
│    update your code to use the new core features.
│    More info: https://github.com/storybookjs/storybook/blob/next/MIGRATION.md#es...)
└

Reproduction link

none

Reproduction steps

1. Upgrade from Storybook 8.4.7 for html-vite to v9.1.8
2. Wait forever while automigration runs

System

Storybook Environment Info:

  System:
    OS: Windows 11 10.0.26100
    CPU: (20) x64 12th Gen Intel(R) Core(TM) i7-12700H
  Binaries:
    Node: 20.10.0 - C:\Program Files\nodejs\node.EXE
    npm: 10.4.0 - C:\Program Files\nodejs\npm.CMD <----- active
  Browsers:
    Edge: Chromium (140.0.3485.54)
  npmPackages:
    @storybook/addon-a11y: ^9.1.8 => 8.4.7
    @storybook/addon-designs: ^10.0.2 => 8.0.4
    @storybook/addon-essentials: ^8.4.7 => 8.4.7
    @storybook/addon-interactions: ^8.4.7 => 8.4.7
    @storybook/addon-links: ^9.1.8 => 8.4.7
    @storybook/blocks: ^8.4.7 => 8.4.7
    @storybook/html: ^9.1.8 => 8.4.7
    @storybook/html-vite: ^9.1.8 => 8.4.7
    @storybook/test: ^8.4.7 => 8.4.7
    storybook: ^9.1.8 => 8.4.7
    storybook-addon-pseudo-states: ^9.1.8 => 4.0.2
    storybook-dark-mode: ^4.0.2 => 4.0.2

Additional context

Storybook 8.4.7 for html-vite

[dosubot[bot]]

Hi @bourpie! I'm Dosu and I’m helping the storybook team.

This is a known issue, especially on Windows and in PowerShell: the automigration process relies on interactive CLI prompts, which can hang indefinitely if the terminal doesn't fully support them. This often happens at the "Select automigrations to run" step and is not specific to html-vite or your project setup (reference).

You can work around this by running the upgrade with the --yes flag, which skips all prompts and should avoid the hang:

npx storybook@latest upgrade --yes

If that doesn't help, try running the command in a different shell (like Git Bash or WSL), or make sure your terminal supports interactive prompts.

Other things to check:

• Make sure all Storybook dependencies (like @storybook/html-vite) are listed in your root package.json. If you see errors about missing dependencies, adding @storybook/csf as a devDependency can unblock the migration (reference).
• Remove or update any community addons that aren't in the @storybook/* namespace, as incompatible addons can also cause migration issues (migration guide).
• For more details on where it hangs, run with --loglevel debug --write-logs and check the generated log file.

If you still get stuck, you can manually follow the migration steps in the Storybook 9 migration guide and run npx storybook@latest doctor after upgrading to check for issues.

To reply, just mention @dosu.

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[bourpie]

@dosu Wow ! That was fast!! Your solution works perfectly ! Thank you !