scss: Handle single-file sourcemaps correctly

Simple sites may only have one css file. Update the replace directive to
correctly match single-file sourcemaps and multi-file sourcemaps.

Verified locally with and without SASS and CSS imports.

Fixes #8174

diff --git a/resources/resource_transformers/tocss/scss/tocss.go b/resources/resource_transformers/tocss/scss/tocss.go
index 57ac16711550fea3d38cda6bc9b20e803149d294..10bd1f6f8d8cd53eb7218103dda3e2b1a852db9b 100644 (file)
--- a/resources/resource_transformers/tocss/scss/tocss.go
+++ b/resources/resource_transformers/tocss/scss/tocss.go
@@ -163,7 +163,7 @@ func (t *toCSSTransformation) Transform(ctx *resources.ResourceTransformationCtx
                // This is a workaround for what looks like a bug in Libsass. But
                // getting this resolution correct in tools like Chrome Workspaces
                // is important enough to go this extra mile.
-               mapContent := strings.Replace(res.SourceMapContent, `stdin",`, fmt.Sprintf("%s\",", sourcePath), 1)
+               mapContent := strings.Replace(res.SourceMapContent, `stdin"`, fmt.Sprintf("%s\"", sourcePath), 1)
 
                return ctx.PublishSourceMap(mapContent)
        }