[server] prepare module.Open to return error

1 files changed, 3 insertions, 3 deletions

diff --git a/pkg/server/module/alpha.go b/pkg/server/module/alpha.go
index 4552c50..8174b25 100644
--- a/pkg/server/module/alpha.go
+++ b/pkg/server/module/alpha.go
@@ -7,7 +7,7 @@ import (
 	"unicode"
 )
 
-func alpha(cb func(rune) rune) Pipe {
+func alpha(cb func(rune) rune) Func {
 	return func(rq, wq queue.Q) error {
 		r := bufio.NewReader(rq.Reader())
 
@@ -27,6 +27,6 @@ func alpha(cb func(rune) rune) Pipe {
 }
 
 func init() {
-	registerPipe("lower", alpha(unicode.ToLower))
-	registerPipe("upper", alpha(unicode.ToUpper))
+	registerFunc("lower", alpha(unicode.ToLower))
+	registerFunc("upper", alpha(unicode.ToUpper))
 }