After upgrading to v6.5.0+ I get process is not defined

[joshwooding]

Describe the bug

After upgrading to v6.5.0+ I get process is not defined when running tests that import storybook packages.

To Reproduce
I don't have a great reproduction but I've seen it in two places with the Vite builder:

https://github.com/jpmorganchase/uitk/runs/6656327980?check_suite_focus=true#step:7:96
https://github.com/storybookjs/builder-vite/runs/6610284218?check_suite_focus=true#step:7:93

System
Please paste the results of npx sb@next info here.

Environment Info:

System:
OS: Windows 10 10.0.19043
CPU: (16) x64 Intel(R) Core(TM) i9-9980HK CPU @ 2.40GHz
Binaries:
Node: 16.13.0 - C:\Program Files\nodejs\node.EXE
Yarn: 3.2.0 - ~\AppData\Roaming\npm\yarn.CMD
npm: 8.10.0 - ~\AppData\Roaming\npm\npm.CMD
Browsers:
Chrome: 102.0.5005.62
Edge: Spartan (44.19041.1266.0), Chromium (101.0.1210.53)
npmPackages:
@storybook/addon-a11y: 6.5.6 => 6.5.6
@storybook/addon-actions: 6.5.6 => 6.5.6
@storybook/addon-docs: 6.5.6 => 6.5.6
@storybook/addon-essentials: 6.5.6 => 6.5.6
@storybook/addon-links: 6.5.6 => 6.5.6
@storybook/builder-vite: ^0.1.35 => 0.1.35
@storybook/node-logger: 6.5.6 => 6.5.6
@storybook/react: 6.5.6 => 6.5.6
@storybook/testing-react: ^1.2.2 => 1.2.3

Additional context
I believe this is a similar issue to #18015 but with @storybook/theming

[shilman]

Yippee!! I just released https://github.com/storybookjs/storybook/releases/tag/v6.5.9-alpha.1 containing PR #18367 that references this issue. Upgrade today to the @prerelease NPM tag to try it out!

npx sb upgrade --prerelease

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

[shilman]

ZOMG!! I just released https://github.com/storybookjs/storybook/releases/tag/v6.5.9-alpha.2 containing PR #18469 that references this issue. Upgrade today to the @prerelease NPM tag to try it out!

npx sb upgrade --prerelease

[shilman]

Gadzooks!! I just released https://github.com/storybookjs/storybook/releases/tag/v6.5.9 containing PR #18469 that references this issue. Upgrade today to the @latest NPM tag to try it out!

npx sb upgrade

[shilman]

¡Ay Caramba!! I just released https://github.com/storybookjs/storybook/releases/tag/v7.0.0-alpha.2 containing PR #18469 that references this issue. Upgrade today to the @future NPM tag to try it out!

npx sb upgrade --prerelease

[shilman]

Boo-yah!! I just released https://github.com/storybookjs/storybook/releases/tag/v6.5.10-alpha.0 containing PR #18469 that references this issue. Upgrade today to the @prerelease NPM tag to try it out!

npx sb upgrade --prerelease

[shilman]

Jeepers creepers!! I just released https://github.com/storybookjs/storybook/releases/tag/v6.5.10 containing PR #18367 that references this issue. Upgrade today to the @latest NPM tag to try it out!

npx sb upgrade