dart-sass error since bootstrap 5.3.3

[arnriu]

Prerequisites

• I have searched for duplicate or closed issues
• I have validated any HTML to avoid common problems
• I have read the contributing guidelines

Describe the issue

Since bootstrap 5.3.3, dart-sass 1.77.1 is not compiling.
If I go back to bootstrap 5.3.2, everything is fine. If I switch to original sass 1.77.1, everything is fine.

Error in console:

node:internal/url:804
    this.#updateContext(bindingUrl.parse(input, base));

TypeError: Invalid URL
    at new URL (node:internal/url:804:36)
    at removeLegacyImporterFromSpan (/project_path/node_modules/.pnpm/sass-embedded@1.74.1/node_modules/sass-embedded/dist/lib/src/legacy/utils.js:35:28)
    at newLegacyException (/project_path/node_modules/.pnpm/sass-embedded@1.74.1/node_modules/sass-embedded/dist/lib/src/legacy/index.js:253:72)
    at /project_path/node_modules/.pnpm/sass-embedded@1.74.1/node_modules/sass-embedded/dist/lib/src/legacy/index.js:24:116
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5) {
  code: 'ERR_INVALID_URL',
  input: '/project_path/node_modules/.pnpm/bootstrap@5.3.3_@popperjs+core@2.11.8/node_modules/bootstrap/scss/_variables.scss'
}

Reduced test cases

You can try this devbox with bootstrap 5.3.3. npm start fails
Now in package.json , change bootstrap to 5.3.2, then npm i && npm start. It works.

I only imported 2 files in index.sass, for minimum case. First is functions.scss which seems to be ok in both versions, second is variables.scss, which fails in 5.3.3.

https://codesandbox.io/p/devbox/competent-mahavira-4vgdjg?embed=1&file=%2Fpackage.json

What operating system(s) are you seeing the problem on?

macOS

What browser(s) are you seeing the problem on?

No response

What version of Bootstrap are you using?

5.3.3

[arnriu]

Problem seems to happen since this commit from @julien-deramond , and more specifically, from the last line in variables.scss.
If I comment it out, everything is fine.

@import "variables-dark"; // TODO: can be removed safely in v6, only here to avoid breaking changes in v5.3