Drain pkg/transformers.

api/transform/nooptransformer.go

@@ -0,0 +1,21 @@
+// Copyright 2019 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package transform
+
+import "sigs.k8s.io/kustomize/v3/pkg/resmap"
+
+// noOpTransformer contains a no-op transformer.
+type noOpTransformer struct{}
+
+var _ resmap.Transformer = &noOpTransformer{}
+
+// newNoOpTransformer constructs a noOpTransformer.
+func newNoOpTransformer() resmap.Transformer {
+	return &noOpTransformer{}
+}
+
+// Transform does nothing.
+func (o *noOpTransformer) Transform(_ resmap.ResMap) error {
+	return nil
+}