Color-mode throws error in a static storybook build

Version

• @nuxtjs/color-mode: 2.1.1
• @nuxtjs/storybook: 4.2.0
• nuxt: 2.15.8

Reproduction Link

GitHub repository that can reproduce the bug: https://github.com/wetendorff/nuxt-storybook-colormode-bug

Steps to reproduce

npm install
npm run storybook:build
npx http-server storybook-static/

What is Expected?

Same result as:

npm run storybook

What is actually happening?

Fails with error:

colorMode is undefined

plugin_client@http://127.0.0.1:8080/main.ad4abd53.iframe.bundle.js:1:55263
_callee2$@http://127.0.0.1:8080/main.ad4abd53.iframe.bundle.js:1:62178
tryCatch@http://127.0.0.1:8080/vendors~main.a248c2cf.iframe.bundle.js:2:484186
invoke@http://127.0.0.1:8080/vendors~main.a248c2cf.iframe.bundle.js:2:483817
defineIteratorMethods/</<@http://127.0.0.1:8080/vendors~main.a248c2cf.iframe.bundle.js:2:484961
asyncGeneratorStep@http://127.0.0.1:8080/vendors~main.a248c2cf.iframe.bundle.js:2:405102
_next@http://127.0.0.1:8080/vendors~main.a248c2cf.iframe.bundle.js:2:405422

Start with the linked reproduction repository and run npm install, npm run storybook:build, and npx http-server storybook-static/. Compare the static build with npm run storybook, then trace where colorMode becomes undefined; done means the static Storybook build produces the same result without the error.