initial commits

fileinfo.go

@@ -6,6 +6,7 @@ import (
 )
 
 type internalFileInfo struct {
+	sys string
 	mode fs.FileMode
 	modtime time.Time
 	name string
@@ -35,5 +36,5 @@ func (receiver internalFileInfo) Size() int64 {
 }
 
 func (receiver internalFileInfo) Sys() any {
-	return nil
+	return receiver.sys
 }

regularfile.go

@@ -96,6 +96,7 @@ func (receiver *RegularFile) Stat() (fs.FileInfo, error) {
 	const modeRegularFile = 0
 
 	return internalFileInfo{
+		sys:     receiver.FileContent.String(),
 		name:    receiver.FileName,
 		size:    receiver.FileContent.Size(),
 		mode:    modeRegularFile,