Interface SystemFS

config.go:322–327

}

type SystemFS interface {
	Open(string) (fs.File, error)
	ReadDir(string) ([]fs.DirEntry, error)
	Stat(string) (fs.FileInfo, error)
	WriteFile(string, []byte, os.FileMode) error
}

// https://github.com/golang/go/issues/47803
type osFS struct{}