code: function getImportAbsolutePath(url, prev, includedFilesMap, includedPaths = []) {
    // Ensure that both @import 'file' and @import 'file.scss' is mapped correctly
    let extension = path.posix.extname(prev);
    if(path.posix.extname(url) !== extension) {
      url += extension;
    }
  
    const absolutePath = findImportedPath(url, prev, includedFilesMap, includedPaths);
  
    if(!absolutePath) {
      throw new Error(`Can not determine imported file for url '${url}' imported in ${prev}`);
    }
  
    return absolutePath;
  }
docs: Get the absolute file path for a relative @import like './sub/file.scsss'
  If the @import is made from a raw data section a best guess path is returned