filesystem

type FileSystem interface {
	Stat(name string) (os.FileInfo, error)
	ReadFile(name string) ([]byte, error)
	WriteFile(name string, data []byte, perm os.FileMode) error
	AtomicWrite(name string, data []byte, perm os.FileMode) error
	Open(name string) (*os.File, error)
	MkdirAll(path string, perm os.FileMode) error
	ReadDir(name string) ([]os.DirEntry, error)
	Remove(name string) error
}

type OSFileSystem struct{}