When calling the findImportedPath the url should be normalized to prevent issues on Windows

[mAiNiNfEcTiOn]

Context

When using sass-extract on NodeJS, at least together with node-sass-tilde-importer, the path of the import appears with a backslash \, while the includedFilesMap presents paths with forwardslash /.

Expected result

It should handle the import's path seamlessly, as if it was done on Linux or MacOS.

Actual result

It throws the error: Can not determine imported file for url 'C:\my\path\to\the\module\bla.scss' imported in C:/my/path/to/the/file/that/imports/it.scss

Note the difference in back and forward slashes.

Proposed solution

The solution should be passing the url parameter as normalizePath(url).