public Module Transform(Module module)
        {
            string fullModulePath = module.FullPath;
            string moduleId       = module.ModuleId;
            string content        = module.TransformedContent ?? _fileSystem.File.ReadAllText(fullModulePath);

            LibSass.Compiler.SassCompiler compiler = new LibSass.Compiler.SassCompiler(new LibSass.Compiler.Options.SassOptions
            {
                Data        = content,
                InputPath   = fullModulePath,
                OutputStyle = LibSass.Compiler.Options.SassOutputStyle.Compressed,
                Importers   = new LibSass.Compiler.Options.CustomImportDelegate[]
                {
                    new CustomImportDelegate((string currentImport, string parentImport, ISassOptions sassOptions) =>
                    {
                        var importPath = _fileSystem.Path.GetFullPath(_fileSystem.Path.Combine(_fileSystem.Path.GetDirectoryName(fullModulePath), currentImport));
                        return(new SassImport[]
                        {
                            new SassImport
                            {
                                Data = _fileSystem.File.ReadAllText(importPath),
                                Path = importPath
                            }
                        });
                    })
                }
            });

            CssToJsModule cssTransformer = new CssToJsModule();
            var           css            = compiler.Compile().Output;

            module.OriginalContent    = module.OriginalContent ?? content;
            module.TransformedContent = cssTransformer.Build(css, moduleId);
            return(module);
        }
        public Module Transform(Module module)
        {
            string fullModulePath = module.FullPath;
            string moduleId       = module.ModuleId;
            string content        = module.TransformedContent ?? _fileSystem.File.ReadAllText(fullModulePath);

            dotless.Core.EngineFactory factory = new dotless.Core.EngineFactory(new dotless.Core.configuration.DotlessConfiguration {
                Debug = true, ImportAllFilesAsLess = true, InlineCssFiles = true, MinifyOutput = true
            });
            // Temporary solution until Pandora is exposed by Dotless.
            FileReader.FileSystem            = _fileSystem;
            factory.Configuration.LessSource = typeof(FileReader);
            var engine = factory.GetEngine();

            engine.CurrentDirectory = _fileSystem.Path.GetFullPath(_fileSystem.Path.GetDirectoryName(fullModulePath));
            var           css            = engine.TransformToCss(content, moduleId);
            CssToJsModule cssTransformer = new CssToJsModule();

            module.OriginalContent    = module.OriginalContent ?? content;
            module.TransformedContent = cssTransformer.Build(css, moduleId);
            return(module);
        }