Rename WithNamespace to Nested

errors.go

@@ -3,8 +3,6 @@ package yav
 import (
 	"errors"
 	"fmt"
-
-	"go.uber.org/multierr"
 )
 
 const (
@@ -120,31 +118,3 @@ func (err Error) ValueAsString() string {
 
 	return ""
 }
-
-func WithNamespace(namespace string, err error) error {
-	if err == nil {
-		return nil
-	}
-
-	if validationErr, ok := err.(Error); ok {
-		if validationErr.ValueName == "" {
-			return err
-		}
-
-		validationErr.ValueName = namespace + "." + validationErr.ValueName
-		return validationErr
-	}
-
-	partialErrs := multierr.Errors(err) // TODO update in-place ?
-	if len(partialErrs) <= 1 {
-		return err
-	}
-
-	var combinedErr error
-
-	for _, partialErr := range partialErrs {
-		multierr.AppendInto(&combinedErr, WithNamespace(namespace, partialErr))
-	}
-
-	return combinedErr
-}

yav.go

@@ -1,5 +1,9 @@
 package yav
 
+import (
+	"go.uber.org/multierr"
+)
+
 type ValidateFunc[T any] func(name string, value T) (stop bool, err error)
 
 func Chain[T any](name string, value T, validateFuncs ...ValidateFunc[T]) error {
@@ -21,3 +25,31 @@ func Or[T any](name string, value T, validateFuncs ...ValidateFunc[T]) (stop boo
 
 	return
 }
+
+func Nested(name string, err error) error {
+	if err == nil {
+		return nil
+	}
+
+	if validationErr, ok := err.(Error); ok {
+		if validationErr.ValueName == "" {
+			return err
+		}
+
+		validationErr.ValueName = name + "." + validationErr.ValueName
+		return validationErr
+	}
+
+	partialErrs := multierr.Errors(err) // TODO update in-place ?
+	if len(partialErrs) <= 1 {
+		return err
+	}
+
+	var combinedErr error
+
+	for _, partialErr := range partialErrs {
+		multierr.AppendInto(&combinedErr, Nested(name, partialErr))
+	}
+
+	return combinedErr
+}