type Entry struct {
	// contains filtered or unexported fields
}

type EntryKind uint8

const (
	DirEntry  EntryKind = 1
	FileEntry EntryKind = 2
)

type FS interface {
	// The returned map is immutable and is cached across invocations. Do not
	// mutate it.
	ReadDirectory(path string) (map[string]*Entry, error)
	ReadFile(path string) (string, error)

	// This is part of the interface because the mock interface used for tests
	// should not depend on file system behavior (i.e. different slashes for
	// Windows) while the real interface should.
	IsAbs(path string) bool
	Abs(path string) (string, bool)
	Dir(path string) string
	Base(path string) string
	Ext(path string) string
	Join(parts ...string) string
	Cwd() string
	Rel(base string, target string) (string, bool)
}