Using types intstead of several type in auth file

auth.go

@@ -16,15 +16,17 @@ import (
 // AuthUserKey is the cookie name for user credential in basic auth.
 const AuthUserKey = "user"
 
+type (
 	// Accounts defines a key/value for user/pass list of authorized logins.
-type Accounts map[string]string
+	Accounts map[string]string
 
-type authPair struct {
+	authPair struct {
 		value string
 		user  string
 	}
 
-type authPairs []authPair
+	authPairs []authPair
+)
 
 func (a authPairs) searchCredential(authValue string) (string, bool) {
 	if authValue == "" {