fs

type File interface {
	io.Closer
	io.Reader
	io.ReaderAt
	io.Seeker
	io.Writer
	Stat() (os.FileInfo, error)
}

type FileSystem interface {
	Exists(path string) bool
	MkdirP(path string) error
	WriteFile(name string, writeFunc func(writer io.Writer) error) error
	WriteFileNotExist(name string, writeFunc func(writer io.Writer) error) error
	WriteJSON(path string, data interface{}) error
	ReadJSON(path string, data interface{}) error
}