as function instead

builder.go

@@ -0,0 +1,34 @@
+package curre
+
+import "context"
+
+type FunctionalComponent struct {
+	init  func(ctx context.Context) error
+	start func(ctx context.Context) error
+	stop  func(ctx context.Context) error
+}
+
+func NewFunctionalComponent(
+	fc *FunctionalComponent,
+) Component {
+	return fc
+}
+
+func (fc *FunctionalComponent) Init(ctx context.Context) error {
+	if fc.init != nil {
+		return fc.init(ctx)
+	}
+	return nil
+}
+func (fc *FunctionalComponent) Start(ctx context.Context) error {
+	if fc.start != nil {
+		return fc.start(ctx)
+	}
+	return nil
+}
+func (fc *FunctionalComponent) Stop(ctx context.Context) error {
+	if fc.stop != nil {
+		return fc.stop(ctx)
+	}
+	return nil
+}

closers.go

@@ -2,6 +2,6 @@ package curre
 
 import "context"
 
-type Closer interface {
-	Close(ctx context.Context) error
+type Stopper interface {
+	Stop(ctx context.Context) error
 }

component.go

@@ -3,5 +3,5 @@ package curre
 type Component interface {
 	Initer
 	Starter
-	Closer
+	Stopper
 }

example/app/main.go

@@ -28,6 +28,6 @@ func (hs *httpServer) Start(ctx context.Context) error {
 
 	return nil
 }
-func (hs *httpServer) Close(ctx context.Context) error {
+func (hs *httpServer) Stop(ctx context.Context) error {
 	return nil
 }

manager.go

@@ -139,7 +139,7 @@ func (m *Manager) shutdown(ctx context.Context) error {
 
 	go func(ctx context.Context) {
 		for _, c := range closers {
-			c.Close(ctx)
+			c.Stop(ctx)
 		}
 
 		shutdownChan <- struct{}{}