Start pluglib, a set of public, plugin specific functions.

plugin/builtin/AnnotationsTransformer.go

@@ -2,7 +2,6 @@
 package builtin
 
 import (
-	"sigs.k8s.io/kustomize/v3/pkg/ifc"
 	"sigs.k8s.io/kustomize/v3/pkg/resmap"
 	"sigs.k8s.io/kustomize/v3/pkg/transformers"
 	"sigs.k8s.io/kustomize/v3/pkg/transformers/config"
@@ -16,7 +15,7 @@ type AnnotationsTransformerPlugin struct {
 }
 
 func (p *AnnotationsTransformerPlugin) Config(
-	ldr ifc.Loader, rf *resmap.Factory, c []byte) (err error) {
+	h *resmap.PluginHelpers, c []byte) (err error) {
 	p.Annotations = nil
 	p.FieldSpecs = nil
 	return yaml.Unmarshal(c, p)

plugin/builtin/ConfigMapGenerator.go

@@ -2,22 +2,20 @@
 package builtin
 
 import (
-	"sigs.k8s.io/kustomize/v3/pkg/ifc"
 	"sigs.k8s.io/kustomize/v3/pkg/resmap"
 	"sigs.k8s.io/kustomize/v3/pkg/types"
 	"sigs.k8s.io/yaml"
 )
 
 type ConfigMapGeneratorPlugin struct {
-	ldr              ifc.Loader
-	rf               *resmap.Factory
+	h                *resmap.PluginHelpers
 	types.ObjectMeta `json:"metadata,omitempty" yaml:"metadata,omitempty" protobuf:"bytes,1,opt,name=metadata"`
 	types.GeneratorOptions
 	types.ConfigMapArgs
 }
 
 func (p *ConfigMapGeneratorPlugin) Config(
-	ldr ifc.Loader, rf *resmap.Factory, config []byte) (err error) {
+	h *resmap.PluginHelpers, config []byte) (err error) {
 	p.GeneratorOptions = types.GeneratorOptions{}
 	p.ConfigMapArgs = types.ConfigMapArgs{}
 	err = yaml.Unmarshal(config, p)
@@ -27,13 +25,13 @@ func (p *ConfigMapGeneratorPlugin) Config(
 	if p.ConfigMapArgs.Namespace == "" {
 		p.ConfigMapArgs.Namespace = p.Namespace
 	}
-	p.ldr = ldr
-	p.rf = rf
+	p.h = h
 	return
 }
 
 func (p *ConfigMapGeneratorPlugin) Generate() (resmap.ResMap, error) {
-	return p.rf.FromConfigMapArgs(p.ldr, &p.GeneratorOptions, p.ConfigMapArgs)
+	return p.h.ResmapFactory().FromConfigMapArgs(
+		p.h.Loader(), &p.GeneratorOptions, p.ConfigMapArgs)
 }
 
 func NewConfigMapGeneratorPlugin() resmap.GeneratorPlugin {

plugin/builtin/HashTransformer.go

@@ -13,8 +13,8 @@ type HashTransformerPlugin struct {
 }
 
 func (p *HashTransformerPlugin) Config(
-	ldr ifc.Loader, rf *resmap.Factory, config []byte) (err error) {
-	p.hasher = rf.RF().Hasher()
+	h *resmap.PluginHelpers, config []byte) (err error) {
+	p.hasher = h.ResmapFactory().RF().Hasher()
 	return nil
 }
 

plugin/builtin/ImageTagTransformer.go

@@ -6,7 +6,6 @@ import (
 	"regexp"
 	"strings"
 
-	"sigs.k8s.io/kustomize/v3/pkg/ifc"
 	"sigs.k8s.io/kustomize/v3/pkg/image"
 	"sigs.k8s.io/kustomize/v3/pkg/resmap"
 	"sigs.k8s.io/kustomize/v3/pkg/transformers"
@@ -22,7 +21,7 @@ type ImageTagTransformerPlugin struct {
 }
 
 func (p *ImageTagTransformerPlugin) Config(
-	ldr ifc.Loader, rf *resmap.Factory, c []byte) (err error) {
+	h *resmap.PluginHelpers, c []byte) (err error) {
 	p.ImageTag = image.Image{}
 	p.FieldSpecs = nil
 	return yaml.Unmarshal(c, p)

plugin/builtin/InventoryTransformer.go

@@ -4,28 +4,24 @@ package builtin
 import (
 	"fmt"
 
-	"sigs.k8s.io/kustomize/v3/pkg/resource"
-
 	"sigs.k8s.io/kustomize/v3/pkg/hasher"
-	"sigs.k8s.io/kustomize/v3/pkg/ifc"
 	"sigs.k8s.io/kustomize/v3/pkg/inventory"
 	"sigs.k8s.io/kustomize/v3/pkg/resid"
 	"sigs.k8s.io/kustomize/v3/pkg/resmap"
+	"sigs.k8s.io/kustomize/v3/pkg/resource"
 	"sigs.k8s.io/kustomize/v3/pkg/types"
 	"sigs.k8s.io/yaml"
 )
 
 type InventoryTransformerPlugin struct {
-	ldr              ifc.Loader
-	rf               *resmap.Factory
+	h                *resmap.PluginHelpers
 	types.ObjectMeta `json:"metadata,omitempty" yaml:"metadata,omitempty" protobuf:"bytes,1,opt,name=metadata"`
 	Policy           string `json:"policy,omitempty" yaml:"policy,omitempty"`
 }
 
 func (p *InventoryTransformerPlugin) Config(
-	ldr ifc.Loader, rf *resmap.Factory, c []byte) (err error) {
-	p.ldr = ldr
-	p.rf = rf
+	h *resmap.PluginHelpers, c []byte) (err error) {
+	p.h = h
 	err = yaml.Unmarshal(c, p)
 	if err != nil {
 		return err
@@ -74,7 +70,8 @@ func (p *InventoryTransformerPlugin) Transform(m resmap.ResMap) error {
 		return err
 	}
 
-	cm, err := p.rf.RF().MakeConfigMap(p.ldr, opts, &args)
+	cm, err := p.h.ResmapFactory().RF().MakeConfigMap(
+		p.h.Loader(), opts, &args)
 	if err != nil {
 		return err
 	}

plugin/builtin/LabelTransformer.go

@@ -2,7 +2,6 @@
 package builtin
 
 import (
-	"sigs.k8s.io/kustomize/v3/pkg/ifc"
 	"sigs.k8s.io/kustomize/v3/pkg/resmap"
 	"sigs.k8s.io/kustomize/v3/pkg/transformers"
 	"sigs.k8s.io/kustomize/v3/pkg/transformers/config"
@@ -16,7 +15,7 @@ type LabelTransformerPlugin struct {
 }
 
 func (p *LabelTransformerPlugin) Config(
-	ldr ifc.Loader, rf *resmap.Factory, c []byte) (err error) {
+	h *resmap.PluginHelpers, c []byte) (err error) {
 	p.Labels = nil
 	p.FieldSpecs = nil
 	return yaml.Unmarshal(c, p)

plugin/builtin/LegacyOrderTransformer.go

@@ -5,7 +5,6 @@ import (
 	"sort"
 
 	"github.com/pkg/errors"
-	"sigs.k8s.io/kustomize/v3/pkg/ifc"
 	"sigs.k8s.io/kustomize/v3/pkg/resmap"
 	"sigs.k8s.io/kustomize/v3/pkg/resource"
 )
@@ -19,7 +18,7 @@ type LegacyOrderTransformerPlugin struct{}
 
 // Nothing needed for configuration.
 func (p *LegacyOrderTransformerPlugin) Config(
-	ldr ifc.Loader, rf *resmap.Factory, c []byte) (err error) {
+	h *resmap.PluginHelpers, c []byte) (err error) {
 	return nil
 }
 

plugin/builtin/NamespaceTransformer.go

@@ -4,7 +4,6 @@ package builtin
 import (
 	"fmt"
 
-	"sigs.k8s.io/kustomize/v3/pkg/ifc"
 	"sigs.k8s.io/kustomize/v3/pkg/resid"
 	"sigs.k8s.io/kustomize/v3/pkg/resmap"
 	"sigs.k8s.io/kustomize/v3/pkg/resource"
@@ -21,7 +20,7 @@ type NamespaceTransformerPlugin struct {
 }
 
 func (p *NamespaceTransformerPlugin) Config(
-	ldr ifc.Loader, rf *resmap.Factory, c []byte) (err error) {
+	h *resmap.PluginHelpers, c []byte) (err error) {
 	p.Namespace = ""
 	p.FieldSpecs = nil
 	return yaml.Unmarshal(c, p)

plugin/builtin/PatchJson6902Transformer.go

@@ -4,7 +4,7 @@ package builtin
 import (
 	"fmt"
 
-	jsonpatch "github.com/evanphx/json-patch"
+	"github.com/evanphx/json-patch"
 	"github.com/pkg/errors"
 	"sigs.k8s.io/kustomize/v3/pkg/gvk"
 	"sigs.k8s.io/kustomize/v3/pkg/ifc"
@@ -23,8 +23,8 @@ type PatchJson6902TransformerPlugin struct {
 }
 
 func (p *PatchJson6902TransformerPlugin) Config(
-	ldr ifc.Loader, rf *resmap.Factory, c []byte) (err error) {
-	p.ldr = ldr
+	h *resmap.PluginHelpers, c []byte) (err error) {
+	p.ldr = h.Loader()
 	err = yaml.Unmarshal(c, p)
 	if err != nil {
 		return err

plugin/builtin/PatchStrategicMergeTransformer.go

@@ -4,7 +4,6 @@ package builtin
 import (
 	"fmt"
 
-	"sigs.k8s.io/kustomize/v3/pkg/ifc"
 	"sigs.k8s.io/kustomize/v3/pkg/resmap"
 	"sigs.k8s.io/kustomize/v3/pkg/resource"
 	"sigs.k8s.io/kustomize/v3/pkg/types"
@@ -12,17 +11,15 @@ import (
 )
 
 type PatchStrategicMergeTransformerPlugin struct {
-	ldr           ifc.Loader
-	rf            *resmap.Factory
+	h             *resmap.PluginHelpers
 	loadedPatches []*resource.Resource
 	Paths         []types.PatchStrategicMerge `json:"paths,omitempty" yaml:"paths,omitempty"`
 	Patches       string                      `json:"patches,omitempty" yaml:"patches,omitempty"`
 }
 
 func (p *PatchStrategicMergeTransformerPlugin) Config(
-	ldr ifc.Loader, rf *resmap.Factory, c []byte) (err error) {
-	p.ldr = ldr
-	p.rf = rf
+	h *resmap.PluginHelpers, c []byte) (err error) {
+	p.h = h
 	err = yaml.Unmarshal(c, p)
 	if err != nil {
 		return err
@@ -32,12 +29,13 @@ func (p *PatchStrategicMergeTransformerPlugin) Config(
 	}
 	if len(p.Paths) != 0 {
 		for _, onePath := range p.Paths {
-			res, err := p.rf.RF().SliceFromBytes([]byte(onePath))
+			res, err := p.h.ResmapFactory().RF().SliceFromBytes([]byte(onePath))
 			if err == nil {
 				p.loadedPatches = append(p.loadedPatches, res...)
 				continue
 			}
-			res, err = p.rf.RF().SliceFromPatches(ldr, []types.PatchStrategicMerge{onePath})
+			res, err = p.h.ResmapFactory().RF().SliceFromPatches(
+				p.h.Loader(), []types.PatchStrategicMerge{onePath})
 			if err != nil {
 				return err
 			}
@@ -45,7 +43,7 @@ func (p *PatchStrategicMergeTransformerPlugin) Config(
 		}
 	}
 	if p.Patches != "" {
-		res, err := p.rf.RF().SliceFromBytes([]byte(p.Patches))
+		res, err := p.h.ResmapFactory().RF().SliceFromBytes([]byte(p.Patches))
 		if err != nil {
 			return err
 		}
@@ -60,7 +58,7 @@ func (p *PatchStrategicMergeTransformerPlugin) Config(
 }
 
 func (p *PatchStrategicMergeTransformerPlugin) Transform(m resmap.ResMap) error {
-	patches, err := p.rf.MergePatches(p.loadedPatches)
+	patches, err := p.h.ResmapFactory().MergePatches(p.loadedPatches)
 	if err != nil {
 		return err
 	}

plugin/builtin/PatchTransformer.go

@@ -6,7 +6,6 @@ import (
 
 	"github.com/evanphx/json-patch"
 	"github.com/pkg/errors"
-	"sigs.k8s.io/kustomize/v3/pkg/ifc"
 	"sigs.k8s.io/kustomize/v3/pkg/resmap"
 	"sigs.k8s.io/kustomize/v3/pkg/resource"
 	"sigs.k8s.io/kustomize/v3/pkg/types"
@@ -14,8 +13,6 @@ import (
 )
 
 type PatchTransformerPlugin struct {
-	ldr          ifc.Loader
-	rf           *resmap.Factory
 	loadedPatch  *resource.Resource
 	decodedPatch jsonpatch.Patch
 	Path         string          `json:"path,omitempty" yaml:"path,omitempty"`
@@ -24,9 +21,7 @@ type PatchTransformerPlugin struct {
 }
 
 func (p *PatchTransformerPlugin) Config(
-	ldr ifc.Loader, rf *resmap.Factory, c []byte) (err error) {
-	p.ldr = ldr
-	p.rf = rf
+	h *resmap.PluginHelpers, c []byte) (err error) {
 	err = yaml.Unmarshal(c, p)
 	if err != nil {
 		return err
@@ -43,7 +38,7 @@ func (p *PatchTransformerPlugin) Config(
 	}
 	var in []byte
 	if p.Path != "" {
-		in, err = ldr.Load(p.Path)
+		in, err = h.Loader().Load(p.Path)
 		if err != nil {
 			return
 		}
@@ -52,7 +47,7 @@ func (p *PatchTransformerPlugin) Config(
 		in = []byte(p.Patch)
 	}
 
-	patchSM, errSM := p.rf.RF().FromBytes(in)
+	patchSM, errSM := h.ResmapFactory().RF().FromBytes(in)
 	patchJson, errJson := jsonPatchFromBytes(in)
 	if errSM != nil && errJson != nil {
 		err = fmt.Errorf(

plugin/builtin/PrefixSuffixTransformer.go

@@ -6,7 +6,6 @@ import (
 	"fmt"
 
 	"sigs.k8s.io/kustomize/v3/pkg/gvk"
-	"sigs.k8s.io/kustomize/v3/pkg/ifc"
 	"sigs.k8s.io/kustomize/v3/pkg/resid"
 	"sigs.k8s.io/kustomize/v3/pkg/resmap"
 	"sigs.k8s.io/kustomize/v3/pkg/transformers"
@@ -32,7 +31,7 @@ var prefixSuffixFieldSpecsToSkip = []config.FieldSpec{
 }
 
 func (p *PrefixSuffixTransformerPlugin) Config(
-	ldr ifc.Loader, rf *resmap.Factory, c []byte) (err error) {
+	h *resmap.PluginHelpers, c []byte) (err error) {
 	p.Prefix = ""
 	p.Suffix = ""
 	p.FieldSpecs = nil

plugin/builtin/ReplicaCountTransformer.go

@@ -4,7 +4,6 @@ package builtin
 import (
 	"fmt"
 
-	"sigs.k8s.io/kustomize/v3/pkg/ifc"
 	"sigs.k8s.io/kustomize/v3/pkg/resid"
 	"sigs.k8s.io/kustomize/v3/pkg/resmap"
 	"sigs.k8s.io/kustomize/v3/pkg/transformers"
@@ -21,7 +20,7 @@ type ReplicaCountTransformerPlugin struct {
 }
 
 func (p *ReplicaCountTransformerPlugin) Config(
-	ldr ifc.Loader, rf *resmap.Factory, c []byte) (err error) {
+	h *resmap.PluginHelpers, c []byte) (err error) {
 
 	p.Replica = types.Replica{}
 	p.FieldSpecs = nil
@@ -29,7 +28,6 @@ func (p *ReplicaCountTransformerPlugin) Config(
 }
 
 func (p *ReplicaCountTransformerPlugin) Transform(m resmap.ResMap) error {
-
 	found := false
 	for i, replicaSpec := range p.FieldSpecs {
 		matcher := p.createMatcher(i)

plugin/builtin/SecretGenerator.go

@@ -2,22 +2,19 @@
 package builtin
 
 import (
-	"sigs.k8s.io/kustomize/v3/pkg/ifc"
 	"sigs.k8s.io/kustomize/v3/pkg/resmap"
 	"sigs.k8s.io/kustomize/v3/pkg/types"
 	"sigs.k8s.io/yaml"
 )
 
 type SecretGeneratorPlugin struct {
-	ldr              ifc.Loader
-	rf               *resmap.Factory
+	h                *resmap.PluginHelpers
 	types.ObjectMeta `json:"metadata,omitempty" yaml:"metadata,omitempty" protobuf:"bytes,1,opt,name=metadata"`
 	types.GeneratorOptions
 	types.SecretArgs
 }
 
-func (p *SecretGeneratorPlugin) Config(
-	ldr ifc.Loader, rf *resmap.Factory, config []byte) (err error) {
+func (p *SecretGeneratorPlugin) Config(h *resmap.PluginHelpers, config []byte) (err error) {
 	p.GeneratorOptions = types.GeneratorOptions{}
 	p.SecretArgs = types.SecretArgs{}
 	err = yaml.Unmarshal(config, p)
@@ -27,13 +24,13 @@ func (p *SecretGeneratorPlugin) Config(
 	if p.SecretArgs.Namespace == "" {
 		p.SecretArgs.Namespace = p.Namespace
 	}
-	p.ldr = ldr
-	p.rf = rf
+	p.h = h
 	return
 }
 
 func (p *SecretGeneratorPlugin) Generate() (resmap.ResMap, error) {
-	return p.rf.FromSecretArgs(p.ldr, &p.GeneratorOptions, p.SecretArgs)
+	return p.h.ResmapFactory().FromSecretArgs(
+		p.h.Loader(), &p.GeneratorOptions, p.SecretArgs)
 }
 
 func NewSecretGeneratorPlugin() resmap.GeneratorPlugin {

plugin/builtin/annotationstransformer/AnnotationsTransformer.go

@@ -5,7 +5,6 @@
 package main
 
 import (
-	"sigs.k8s.io/kustomize/v3/pkg/ifc"
 	"sigs.k8s.io/kustomize/v3/pkg/resmap"
 	"sigs.k8s.io/kustomize/v3/pkg/transformers"
 	"sigs.k8s.io/kustomize/v3/pkg/transformers/config"
@@ -22,7 +21,7 @@ type plugin struct {
 var KustomizePlugin plugin
 
 func (p *plugin) Config(
-	ldr ifc.Loader, rf *resmap.Factory, c []byte) (err error) {
+	h *resmap.PluginHelpers, c []byte) (err error) {
 	p.Annotations = nil
 	p.FieldSpecs = nil
 	return yaml.Unmarshal(c, p)

plugin/builtin/annotationstransformer/AnnotationsTransformer_test.go

@@ -7,11 +7,11 @@ import (
 	"testing"
 
 	"sigs.k8s.io/kustomize/v3/pkg/kusttest"
-	"sigs.k8s.io/kustomize/v3/pkg/plugins/testenv"
+	"sigs.k8s.io/kustomize/v3/pluglib"
 )
 
 func TestAnnotationsTransformer(t *testing.T) {
-	tc := testenv.NewEnvForTest(t).Set()
+	tc := pluglib.NewEnvForTest(t).Set()
 	defer tc.Reset()
 
 	tc.BuildGoPlugin(

plugin/builtin/configmapgenerator/ConfigMapGenerator.go

@@ -5,15 +5,13 @@
 package main
 
 import (
-	"sigs.k8s.io/kustomize/v3/pkg/ifc"
 	"sigs.k8s.io/kustomize/v3/pkg/resmap"
 	"sigs.k8s.io/kustomize/v3/pkg/types"
 	"sigs.k8s.io/yaml"
 )
 
 type plugin struct {
-	ldr              ifc.Loader
-	rf               *resmap.Factory
+	h                *resmap.PluginHelpers
 	types.ObjectMeta `json:"metadata,omitempty" yaml:"metadata,omitempty" protobuf:"bytes,1,opt,name=metadata"`
 	types.GeneratorOptions
 	types.ConfigMapArgs
@@ -23,7 +21,7 @@ type plugin struct {
 var KustomizePlugin plugin
 
 func (p *plugin) Config(
-	ldr ifc.Loader, rf *resmap.Factory, config []byte) (err error) {
+	h *resmap.PluginHelpers, config []byte) (err error) {
 	p.GeneratorOptions = types.GeneratorOptions{}
 	p.ConfigMapArgs = types.ConfigMapArgs{}
 	err = yaml.Unmarshal(config, p)
@@ -33,11 +31,11 @@ func (p *plugin) Config(
 	if p.ConfigMapArgs.Namespace == "" {
 		p.ConfigMapArgs.Namespace = p.Namespace
 	}
-	p.ldr = ldr
-	p.rf = rf
+	p.h = h
 	return
 }
 
 func (p *plugin) Generate() (resmap.ResMap, error) {
-	return p.rf.FromConfigMapArgs(p.ldr, &p.GeneratorOptions, p.ConfigMapArgs)
+	return p.h.ResmapFactory().FromConfigMapArgs(
+		p.h.Loader(), &p.GeneratorOptions, p.ConfigMapArgs)
 }

plugin/builtin/configmapgenerator/ConfigMapGenerator_test.go

@@ -6,12 +6,13 @@ package main_test
 import (
 	"testing"
 
+	"sigs.k8s.io/kustomize/v3/pluglib"
+
 	"sigs.k8s.io/kustomize/v3/pkg/kusttest"
-	"sigs.k8s.io/kustomize/v3/pkg/plugins/testenv"
 )
 
 func TestConfigMapGenerator(t *testing.T) {
-	tc := testenv.NewEnvForTest(t).Set()
+	tc := pluglib.NewEnvForTest(t).Set()
 	defer tc.Reset()
 
 	tc.BuildGoPlugin(

plugin/builtin/hashtransformer/HashTransformer.go

@@ -19,8 +19,8 @@ type plugin struct {
 var KustomizePlugin plugin
 
 func (p *plugin) Config(
-	ldr ifc.Loader, rf *resmap.Factory, config []byte) (err error) {
-	p.hasher = rf.RF().Hasher()
+	h *resmap.PluginHelpers, config []byte) (err error) {
+	p.hasher = h.ResmapFactory().RF().Hasher()
 	return nil
 }
 

plugin/builtin/hashtransformer/HashTransformer_test.go

@@ -6,12 +6,13 @@ package main_test
 import (
 	"testing"
 
+	"sigs.k8s.io/kustomize/v3/pluglib"
+
 	"sigs.k8s.io/kustomize/v3/pkg/kusttest"
-	"sigs.k8s.io/kustomize/v3/pkg/plugins/testenv"
 )
 
 func TestHashTransformer(t *testing.T) {
-	tc := testenv.NewEnvForTest(t).Set()
+	tc := pluglib.NewEnvForTest(t).Set()
 	defer tc.Reset()
 
 	tc.BuildGoPlugin(

plugin/builtin/imagetagtransformer/ImageTagTransformer.go

@@ -9,7 +9,6 @@ import (
 	"regexp"
 	"strings"
 
-	"sigs.k8s.io/kustomize/v3/pkg/ifc"
 	"sigs.k8s.io/kustomize/v3/pkg/image"
 	"sigs.k8s.io/kustomize/v3/pkg/resmap"
 	"sigs.k8s.io/kustomize/v3/pkg/transformers"
@@ -28,7 +27,7 @@ type plugin struct {
 var KustomizePlugin plugin
 
 func (p *plugin) Config(
-	ldr ifc.Loader, rf *resmap.Factory, c []byte) (err error) {
+	h *resmap.PluginHelpers, c []byte) (err error) {
 	p.ImageTag = image.Image{}
 	p.FieldSpecs = nil
 	return yaml.Unmarshal(c, p)

plugin/builtin/imagetagtransformer/ImageTagTransformer_test.go

@@ -6,12 +6,13 @@ package main_test
 import (
 	"testing"
 
+	"sigs.k8s.io/kustomize/v3/pluglib"
+
 	"sigs.k8s.io/kustomize/v3/pkg/kusttest"
-	"sigs.k8s.io/kustomize/v3/pkg/plugins/testenv"
 )
 
 func TestImageTagTransformerNewTag(t *testing.T) {
-	tc := testenv.NewEnvForTest(t).Set()
+	tc := pluglib.NewEnvForTest(t).Set()
 	defer tc.Reset()
 
 	tc.BuildGoPlugin(
@@ -82,7 +83,7 @@ spec:
 `)
 }
 func TestImageTagTransformerNewImage(t *testing.T) {
-	tc := testenv.NewEnvForTest(t).Set()
+	tc := pluglib.NewEnvForTest(t).Set()
 	defer tc.Reset()
 
 	tc.BuildGoPlugin(
@@ -154,7 +155,7 @@ spec:
 }
 
 func TestImageTagTransformerNewImageAndTag(t *testing.T) {
-	tc := testenv.NewEnvForTest(t).Set()
+	tc := pluglib.NewEnvForTest(t).Set()
 	defer tc.Reset()
 
 	tc.BuildGoPlugin(
@@ -227,7 +228,7 @@ spec:
 }
 
 func TestImageTagTransformerNewDigest(t *testing.T) {
-	tc := testenv.NewEnvForTest(t).Set()
+	tc := pluglib.NewEnvForTest(t).Set()
 	defer tc.Reset()
 
 	tc.BuildGoPlugin(
@@ -299,7 +300,7 @@ spec:
 }
 
 func TestImageTagTransformerNewImageAndDigest(t *testing.T) {
-	tc := testenv.NewEnvForTest(t).Set()
+	tc := pluglib.NewEnvForTest(t).Set()
 	defer tc.Reset()
 
 	tc.BuildGoPlugin(

plugin/builtin/inventorytransformer/InventoryTransformer.go

@@ -7,20 +7,17 @@ package main
 import (
 	"fmt"
 
-	"sigs.k8s.io/kustomize/v3/pkg/resource"
-
 	"sigs.k8s.io/kustomize/v3/pkg/hasher"
-	"sigs.k8s.io/kustomize/v3/pkg/ifc"
 	"sigs.k8s.io/kustomize/v3/pkg/inventory"
 	"sigs.k8s.io/kustomize/v3/pkg/resid"
 	"sigs.k8s.io/kustomize/v3/pkg/resmap"
+	"sigs.k8s.io/kustomize/v3/pkg/resource"
 	"sigs.k8s.io/kustomize/v3/pkg/types"
 	"sigs.k8s.io/yaml"
 )
 
 type plugin struct {
-	ldr              ifc.Loader
-	rf               *resmap.Factory
+	h                *resmap.PluginHelpers
 	types.ObjectMeta `json:"metadata,omitempty" yaml:"metadata,omitempty" protobuf:"bytes,1,opt,name=metadata"`
 	Policy           string `json:"policy,omitempty" yaml:"policy,omitempty"`
 }
@@ -29,9 +26,8 @@ type plugin struct {
 var KustomizePlugin plugin
 
 func (p *plugin) Config(
-	ldr ifc.Loader, rf *resmap.Factory, c []byte) (err error) {
-	p.ldr = ldr
-	p.rf = rf
+	h *resmap.PluginHelpers, c []byte) (err error) {
+	p.h = h
 	err = yaml.Unmarshal(c, p)
 	if err != nil {
 		return err
@@ -80,7 +76,8 @@ func (p *plugin) Transform(m resmap.ResMap) error {
 		return err
 	}
 
-	cm, err := p.rf.RF().MakeConfigMap(p.ldr, opts, &args)
+	cm, err := p.h.ResmapFactory().RF().MakeConfigMap(
+		p.h.Loader(), opts, &args)
 	if err != nil {
 		return err
 	}

plugin/builtin/inventorytransformer/InventoryTransformer_test.go

@@ -6,8 +6,9 @@ package main_test
 import (
 	"testing"
 
+	"sigs.k8s.io/kustomize/v3/pluglib"
+
 	"sigs.k8s.io/kustomize/v3/pkg/kusttest"
-	"sigs.k8s.io/kustomize/v3/pkg/plugins/testenv"
 )
 
 const (
@@ -59,7 +60,7 @@ metadata:
 )
 
 func TestInventoryTransformerCollect(t *testing.T) {
-	tc := testenv.NewEnvForTest(t).Set()
+	tc := pluglib.NewEnvForTest(t).Set()
 	defer tc.Reset()
 
 	tc.BuildGoPlugin(
@@ -80,7 +81,7 @@ policy: GarbageCollect
 }
 
 func TestInventoryTransformerIgnore(t *testing.T) {
-	tc := testenv.NewEnvForTest(t).Set()
+	tc := pluglib.NewEnvForTest(t).Set()
 	defer tc.Reset()
 
 	tc.BuildGoPlugin(
@@ -101,7 +102,7 @@ policy: GarbageIgnore
 }
 
 func TestInventoryTransformerDefaultPolicy(t *testing.T) {
-	tc := testenv.NewEnvForTest(t).Set()
+	tc := pluglib.NewEnvForTest(t).Set()
 	defer tc.Reset()
 
 	tc.BuildGoPlugin(

plugin/builtin/labeltransformer/LabelTransformer.go

@@ -5,7 +5,6 @@
 package main
 
 import (
-	"sigs.k8s.io/kustomize/v3/pkg/ifc"
 	"sigs.k8s.io/kustomize/v3/pkg/resmap"
 	"sigs.k8s.io/kustomize/v3/pkg/transformers"
 	"sigs.k8s.io/kustomize/v3/pkg/transformers/config"
@@ -22,7 +21,7 @@ type plugin struct {
 var KustomizePlugin plugin
 
 func (p *plugin) Config(
-	ldr ifc.Loader, rf *resmap.Factory, c []byte) (err error) {
+	h *resmap.PluginHelpers, c []byte) (err error) {
 	p.Labels = nil
 	p.FieldSpecs = nil
 	return yaml.Unmarshal(c, p)

plugin/builtin/labeltransformer/LabelTransformer_test.go

@@ -6,12 +6,13 @@ package main_test
 import (
 	"testing"
 
+	"sigs.k8s.io/kustomize/v3/pluglib"
+
 	"sigs.k8s.io/kustomize/v3/pkg/kusttest"
-	"sigs.k8s.io/kustomize/v3/pkg/plugins/testenv"
 )
 
 func TestLabelTransformer(t *testing.T) {
-	tc := testenv.NewEnvForTest(t).Set()
+	tc := pluglib.NewEnvForTest(t).Set()
 	defer tc.Reset()
 
 	tc.BuildGoPlugin(

plugin/builtin/legacyordertransformer/LegacyOrderTransformer.go

@@ -8,7 +8,6 @@ import (
 	"sort"
 
 	"github.com/pkg/errors"
-	"sigs.k8s.io/kustomize/v3/pkg/ifc"
 	"sigs.k8s.io/kustomize/v3/pkg/resmap"
 	"sigs.k8s.io/kustomize/v3/pkg/resource"
 )
@@ -25,7 +24,7 @@ var KustomizePlugin plugin
 
 // Nothing needed for configuration.
 func (p *plugin) Config(
-	ldr ifc.Loader, rf *resmap.Factory, c []byte) (err error) {
+	h *resmap.PluginHelpers, c []byte) (err error) {
 	return nil
 }
 

plugin/builtin/legacyordertransformer/LegacyOrderTransformer_test.go

@@ -6,12 +6,13 @@ package main_test
 import (
 	"testing"
 
+	"sigs.k8s.io/kustomize/v3/pluglib"
+
 	"sigs.k8s.io/kustomize/v3/pkg/kusttest"
-	"sigs.k8s.io/kustomize/v3/pkg/plugins/testenv"
 )
 
 func TestLegacyOrderTransformer(t *testing.T) {
-	tc := testenv.NewEnvForTest(t).Set()
+	tc := pluglib.NewEnvForTest(t).Set()
 	defer tc.Reset()
 
 	tc.BuildGoPlugin(

plugin/builtin/namespacetransformer/NamespaceTransformer.go

@@ -7,7 +7,6 @@ package main
 import (
 	"fmt"
 
-	"sigs.k8s.io/kustomize/v3/pkg/ifc"
 	"sigs.k8s.io/kustomize/v3/pkg/resid"
 	"sigs.k8s.io/kustomize/v3/pkg/resmap"
 	"sigs.k8s.io/kustomize/v3/pkg/resource"
@@ -27,7 +26,7 @@ type plugin struct {
 var KustomizePlugin plugin
 
 func (p *plugin) Config(
-	ldr ifc.Loader, rf *resmap.Factory, c []byte) (err error) {
+	h *resmap.PluginHelpers, c []byte) (err error) {
 	p.Namespace = ""
 	p.FieldSpecs = nil
 	return yaml.Unmarshal(c, p)

plugin/builtin/namespacetransformer/NamespaceTransformer_test.go

@@ -7,12 +7,13 @@ import (
 	"strings"
 	"testing"
 
+	"sigs.k8s.io/kustomize/v3/pluglib"
+
 	"sigs.k8s.io/kustomize/v3/pkg/kusttest"
-	"sigs.k8s.io/kustomize/v3/pkg/plugins/testenv"
 )
 
 func TestNamespaceTransformer1(t *testing.T) {
-	tc := testenv.NewEnvForTest(t).Set()
+	tc := pluglib.NewEnvForTest(t).Set()
 	defer tc.Reset()
 
 	tc.BuildGoPlugin(
@@ -190,7 +191,7 @@ metadata:
 }
 
 func TestNamespaceTransformerClusterLevelKinds(t *testing.T) {
-	tc := testenv.NewEnvForTest(t).Set()
+	tc := pluglib.NewEnvForTest(t).Set()
 	defer tc.Reset()
 
 	tc.BuildGoPlugin(
@@ -241,7 +242,7 @@ fieldSpecs:
 }
 
 func TestNamespaceTransformerObjectConflict(t *testing.T) {
-	tc := testenv.NewEnvForTest(t).Set()
+	tc := pluglib.NewEnvForTest(t).Set()
 	defer tc.Reset()
 
 	tc.BuildGoPlugin(

plugin/builtin/patchjson6902transformer/PatchJson6902Transformer.go

@@ -7,7 +7,7 @@ package main
 import (
 	"fmt"
 
-	jsonpatch "github.com/evanphx/json-patch"
+	"github.com/evanphx/json-patch"
 	"github.com/pkg/errors"
 	"sigs.k8s.io/kustomize/v3/pkg/gvk"
 	"sigs.k8s.io/kustomize/v3/pkg/ifc"
@@ -29,8 +29,8 @@ type plugin struct {
 var KustomizePlugin plugin
 
 func (p *plugin) Config(
-	ldr ifc.Loader, rf *resmap.Factory, c []byte) (err error) {
-	p.ldr = ldr
+	h *resmap.PluginHelpers, c []byte) (err error) {
+	p.ldr = h.Loader()
 	err = yaml.Unmarshal(c, p)
 	if err != nil {
 		return err

plugin/builtin/patchjson6902transformer/PatchJson6902Transformer_test.go

@@ -7,8 +7,9 @@ import (
 	"strings"
 	"testing"
 
+	"sigs.k8s.io/kustomize/v3/pluglib"
+
 	"sigs.k8s.io/kustomize/v3/pkg/kusttest"
-	"sigs.k8s.io/kustomize/v3/pkg/plugins/testenv"
 )
 
 const target = `
@@ -29,7 +30,7 @@ spec:
 `
 
 func TestPatchJson6902TransformerMissingFile(t *testing.T) {
-	tc := testenv.NewEnvForTest(t).Set()
+	tc := pluglib.NewEnvForTest(t).Set()
 	defer tc.Reset()
 
 	tc.BuildGoPlugin(
@@ -58,7 +59,7 @@ path: jsonpatch.json
 }
 
 func TestBadPatchJson6902Transformer(t *testing.T) {
-	tc := testenv.NewEnvForTest(t).Set()
+	tc := pluglib.NewEnvForTest(t).Set()
 	defer tc.Reset()
 
 	tc.BuildGoPlugin(
@@ -87,7 +88,7 @@ jsonOp: 'thisIsNotAPatch'
 }
 
 func TestBothEmptyJson6902Transformer(t *testing.T) {
-	tc := testenv.NewEnvForTest(t).Set()
+	tc := pluglib.NewEnvForTest(t).Set()
 	defer tc.Reset()
 
 	tc.BuildGoPlugin(
@@ -115,7 +116,7 @@ target:
 }
 
 func TestBothSpecifiedJson6902Transformer(t *testing.T) {
-	tc := testenv.NewEnvForTest(t).Set()
+	tc := pluglib.NewEnvForTest(t).Set()
 	defer tc.Reset()
 
 	tc.BuildGoPlugin(
@@ -151,7 +152,7 @@ jsonOp: '[{"op": "add", "path": "/spec/template/spec/dnsPolicy", "value": "Clust
 }
 
 func TestPatchJson6902TransformerFromJsonFile(t *testing.T) {
-	tc := testenv.NewEnvForTest(t).Set()
+	tc := pluglib.NewEnvForTest(t).Set()
 	defer tc.Reset()
 
 	tc.BuildGoPlugin(
@@ -201,7 +202,7 @@ spec:
 }
 
 func TestPatchJson6902TransformerFromYamlFile(t *testing.T) {
-	tc := testenv.NewEnvForTest(t).Set()
+	tc := pluglib.NewEnvForTest(t).Set()
 	defer tc.Reset()
 
 	tc.BuildGoPlugin(
@@ -251,7 +252,7 @@ spec:
 }
 
 func TestPatchJson6902TransformerWithInlineJSON(t *testing.T) {
-	tc := testenv.NewEnvForTest(t).Set()
+	tc := pluglib.NewEnvForTest(t).Set()
 	defer tc.Reset()
 
 	tc.BuildGoPlugin(
@@ -292,7 +293,7 @@ spec:
 }
 
 func TestPatchJson6902TransformerWithInlineYAML(t *testing.T) {
-	tc := testenv.NewEnvForTest(t).Set()
+	tc := pluglib.NewEnvForTest(t).Set()
 	defer tc.Reset()
 
 	tc.BuildGoPlugin(

plugin/builtin/patchstrategicmergetransformer/PatchStrategicMergeTransformer.go

@@ -7,7 +7,6 @@ package main
 import (
 	"fmt"
 
-	"sigs.k8s.io/kustomize/v3/pkg/ifc"
 	"sigs.k8s.io/kustomize/v3/pkg/resmap"
 	"sigs.k8s.io/kustomize/v3/pkg/resource"
 	"sigs.k8s.io/kustomize/v3/pkg/types"
@@ -15,8 +14,7 @@ import (
 )
 
 type plugin struct {
-	ldr           ifc.Loader
-	rf            *resmap.Factory
+	h             *resmap.PluginHelpers
 	loadedPatches []*resource.Resource
 	Paths         []types.PatchStrategicMerge `json:"paths,omitempty" yaml:"paths,omitempty"`
 	Patches       string                      `json:"patches,omitempty" yaml:"patches,omitempty"`
@@ -26,9 +24,8 @@ type plugin struct {
 var KustomizePlugin plugin
 
 func (p *plugin) Config(
-	ldr ifc.Loader, rf *resmap.Factory, c []byte) (err error) {
-	p.ldr = ldr
-	p.rf = rf
+	h *resmap.PluginHelpers, c []byte) (err error) {
+	p.h = h
 	err = yaml.Unmarshal(c, p)
 	if err != nil {
 		return err
@@ -38,12 +35,13 @@ func (p *plugin) Config(
 	}
 	if len(p.Paths) != 0 {
 		for _, onePath := range p.Paths {
-			res, err := p.rf.RF().SliceFromBytes([]byte(onePath))
+			res, err := p.h.ResmapFactory().RF().SliceFromBytes([]byte(onePath))
 			if err == nil {
 				p.loadedPatches = append(p.loadedPatches, res...)
 				continue
 			}
-			res, err = p.rf.RF().SliceFromPatches(ldr, []types.PatchStrategicMerge{onePath})
+			res, err = p.h.ResmapFactory().RF().SliceFromPatches(
+				p.h.Loader(), []types.PatchStrategicMerge{onePath})
 			if err != nil {
 				return err
 			}
@@ -51,7 +49,7 @@ func (p *plugin) Config(
 		}
 	}
 	if p.Patches != "" {
-		res, err := p.rf.RF().SliceFromBytes([]byte(p.Patches))
+		res, err := p.h.ResmapFactory().RF().SliceFromBytes([]byte(p.Patches))
 		if err != nil {
 			return err
 		}
@@ -66,7 +64,7 @@ func (p *plugin) Config(
 }
 
 func (p *plugin) Transform(m resmap.ResMap) error {
-	patches, err := p.rf.MergePatches(p.loadedPatches)
+	patches, err := p.h.ResmapFactory().MergePatches(p.loadedPatches)
 	if err != nil {
 		return err
 	}

plugin/builtin/patchstrategicmergetransformer/PatchStrategicMergeTransformer_test.go

@@ -8,8 +8,9 @@ import (
 	"strings"
 	"testing"
 
+	"sigs.k8s.io/kustomize/v3/pluglib"
+
 	"sigs.k8s.io/kustomize/v3/pkg/kusttest"
-	"sigs.k8s.io/kustomize/v3/pkg/plugins/testenv"
 )
 
 const (
@@ -59,7 +60,7 @@ spec:
 )
 
 func TestPatchStrategicMergeTransformerMissingFile(t *testing.T) {
-	tc := testenv.NewEnvForTest(t).Set()
+	tc := pluglib.NewEnvForTest(t).Set()
 	defer tc.Reset()
 
 	tc.BuildGoPlugin(
@@ -86,7 +87,7 @@ paths:
 }
 
 func TestBadPatchStrategicMergeTransformer(t *testing.T) {
-	tc := testenv.NewEnvForTest(t).Set()
+	tc := pluglib.NewEnvForTest(t).Set()
 	defer tc.Reset()
 
 	tc.BuildGoPlugin(
@@ -111,7 +112,7 @@ patches: 'thisIsNotAPatch'
 }
 
 func TestBothEmptyPatchStrategicMergeTransformer(t *testing.T) {
-	tc := testenv.NewEnvForTest(t).Set()
+	tc := pluglib.NewEnvForTest(t).Set()
 	defer tc.Reset()
 
 	tc.BuildGoPlugin(
@@ -134,7 +135,7 @@ metadata:
 }
 
 func TestPatchStrategicMergeTransformerFromFiles(t *testing.T) {
-	tc := testenv.NewEnvForTest(t).Set()
+	tc := pluglib.NewEnvForTest(t).Set()
 	defer tc.Reset()
 
 	tc.BuildGoPlugin(
@@ -184,7 +185,7 @@ spec:
 }
 
 func TestPatchStrategicMergeTransformerWithInlineJSON(t *testing.T) {
-	tc := testenv.NewEnvForTest(t).Set()
+	tc := pluglib.NewEnvForTest(t).Set()
 	defer tc.Reset()
 
 	tc.BuildGoPlugin(
@@ -219,7 +220,7 @@ spec:
 }
 
 func TestPatchStrategicMergeTransformerWithInlineYAML(t *testing.T) {
-	tc := testenv.NewEnvForTest(t).Set()
+	tc := pluglib.NewEnvForTest(t).Set()
 	defer tc.Reset()
 
 	tc.BuildGoPlugin(
@@ -271,7 +272,7 @@ spec:
 }
 
 func TestPatchStrategicMergeTransformerMultiplePatches(t *testing.T) {
-	tc := testenv.NewEnvForTest(t).Set()
+	tc := pluglib.NewEnvForTest(t).Set()
 	defer tc.Reset()
 
 	tc.BuildGoPlugin(
@@ -348,7 +349,7 @@ spec:
 }
 
 func TestStrategicMergeTransformerMultiplePatchesWithConflicts(t *testing.T) {
-	tc := testenv.NewEnvForTest(t).Set()
+	tc := pluglib.NewEnvForTest(t).Set()
 	defer tc.Reset()
 
 	tc.BuildGoPlugin(
@@ -409,7 +410,7 @@ paths:
 }
 
 func TestStrategicMergeTransformerWrongNamespace(t *testing.T) {
-	tc := testenv.NewEnvForTest(t).Set()
+	tc := pluglib.NewEnvForTest(t).Set()
 	defer tc.Reset()
 
 	tc.BuildGoPlugin(
@@ -452,7 +453,7 @@ paths:
 }
 
 func TestStrategicMergeTransformerNoSchema(t *testing.T) {
-	tc := testenv.NewEnvForTest(t).Set()
+	tc := pluglib.NewEnvForTest(t).Set()
 	defer tc.Reset()
 
 	tc.BuildGoPlugin(
@@ -492,7 +493,7 @@ spec:
 }
 
 func TestStrategicMergeTransformerNoSchemaMultiPatches(t *testing.T) {
-	tc := testenv.NewEnvForTest(t).Set()
+	tc := pluglib.NewEnvForTest(t).Set()
 	defer tc.Reset()
 
 	tc.BuildGoPlugin(
@@ -548,7 +549,7 @@ spec:
 }
 
 func TestStrategicMergeTransformerNoSchemaMultiPatchesWithConflict(t *testing.T) {
-	tc := testenv.NewEnvForTest(t).Set()
+	tc := pluglib.NewEnvForTest(t).Set()
 	defer tc.Reset()
 
 	tc.BuildGoPlugin(
@@ -884,7 +885,7 @@ func TestSinglePatch(t *testing.T) {
 		},
 	}
 
-	tc := testenv.NewEnvForTest(t).Set()
+	tc := pluglib.NewEnvForTest(t).Set()
 	defer tc.Reset()
 	tc.BuildGoPlugin(
 		"builtin", "", "PatchStrategicMergeTransformer")
@@ -987,7 +988,7 @@ func TestMultiplePatches(t *testing.T) {
 		},
 	}
 
-	tc := testenv.NewEnvForTest(t).Set()
+	tc := pluglib.NewEnvForTest(t).Set()
 	defer tc.Reset()
 	tc.BuildGoPlugin(
 		"builtin", "", "PatchStrategicMergeTransformer")
@@ -1118,7 +1119,7 @@ func TestMultiplePatchesWithConflict(t *testing.T) {
 		},
 	}
 
-	tc := testenv.NewEnvForTest(t).Set()
+	tc := pluglib.NewEnvForTest(t).Set()
 	defer tc.Reset()
 	tc.BuildGoPlugin(
 		"builtin", "", "PatchStrategicMergeTransformer")
@@ -1227,7 +1228,7 @@ func TestMultipleNamespaces(t *testing.T) {
 		},
 	}
 
-	tc := testenv.NewEnvForTest(t).Set()
+	tc := pluglib.NewEnvForTest(t).Set()
 	defer tc.Reset()
 	tc.BuildGoPlugin(
 		"builtin", "", "PatchStrategicMergeTransformer")
@@ -1249,7 +1250,7 @@ func TestMultipleNamespaces(t *testing.T) {
 }
 
 func TestPatchStrategicMergeTransformerPatchDelete(t *testing.T) {
-	tc := testenv.NewEnvForTest(t).Set()
+	tc := pluglib.NewEnvForTest(t).Set()
 	defer tc.Reset()
 
 	tc.BuildGoPlugin(

plugin/builtin/patchtransformer/PatchTransformer.go

@@ -9,7 +9,6 @@ import (
 
 	"github.com/evanphx/json-patch"
 	"github.com/pkg/errors"
-	"sigs.k8s.io/kustomize/v3/pkg/ifc"
 	"sigs.k8s.io/kustomize/v3/pkg/resmap"
 	"sigs.k8s.io/kustomize/v3/pkg/resource"
 	"sigs.k8s.io/kustomize/v3/pkg/types"
@@ -17,8 +16,6 @@ import (
 )
 
 type plugin struct {
-	ldr          ifc.Loader
-	rf           *resmap.Factory
 	loadedPatch  *resource.Resource
 	decodedPatch jsonpatch.Patch
 	Path         string          `json:"path,omitempty" yaml:"path,omitempty"`
@@ -30,9 +27,7 @@ type plugin struct {
 var KustomizePlugin plugin
 
 func (p *plugin) Config(
-	ldr ifc.Loader, rf *resmap.Factory, c []byte) (err error) {
-	p.ldr = ldr
-	p.rf = rf
+	h *resmap.PluginHelpers, c []byte) (err error) {
 	err = yaml.Unmarshal(c, p)
 	if err != nil {
 		return err
@@ -49,7 +44,7 @@ func (p *plugin) Config(
 	}
 	var in []byte
 	if p.Path != "" {
-		in, err = ldr.Load(p.Path)
+		in, err = h.Loader().Load(p.Path)
 		if err != nil {
 			return
 		}
@@ -58,7 +53,7 @@ func (p *plugin) Config(
 		in = []byte(p.Patch)
 	}
 
-	patchSM, errSM := p.rf.RF().FromBytes(in)
+	patchSM, errSM := h.ResmapFactory().RF().FromBytes(in)
 	patchJson, errJson := jsonPatchFromBytes(in)
 	if errSM != nil && errJson != nil {
 		err = fmt.Errorf(

plugin/builtin/patchtransformer/PatchTransformer_test.go

@@ -7,8 +7,9 @@ import (
 	"strings"
 	"testing"
 
+	"sigs.k8s.io/kustomize/v3/pluglib"
+
 	"sigs.k8s.io/kustomize/v3/pkg/kusttest"
-	"sigs.k8s.io/kustomize/v3/pkg/plugins/testenv"
 )
 
 const (
@@ -66,7 +67,7 @@ spec:
 )
 
 func TestPatchTransformerMissingFile(t *testing.T) {
-	tc := testenv.NewEnvForTest(t).Set()
+	tc := pluglib.NewEnvForTest(t).Set()
 	defer tc.Reset()
 
 	tc.BuildGoPlugin(
@@ -90,7 +91,7 @@ path: patch.yaml
 }
 
 func TestPatchTransformerBadPatch(t *testing.T) {
-	tc := testenv.NewEnvForTest(t).Set()
+	tc := pluglib.NewEnvForTest(t).Set()
 	defer tc.Reset()
 
 	tc.BuildGoPlugin(
@@ -114,7 +115,7 @@ patch: "thisIsNotAPatch"
 }
 
 func TestPatchTransformerMissingSelector(t *testing.T) {
-	tc := testenv.NewEnvForTest(t).Set()
+	tc := pluglib.NewEnvForTest(t).Set()
 	defer tc.Reset()
 
 	tc.BuildGoPlugin(
@@ -138,7 +139,7 @@ patch: '[{"op": "add", "path": "/spec/template/spec/dnsPolicy", "value": "Cluste
 }
 
 func TestPatchTransformerBothEmptyPathAndPatch(t *testing.T) {
-	tc := testenv.NewEnvForTest(t).Set()
+	tc := pluglib.NewEnvForTest(t).Set()
 	defer tc.Reset()
 
 	tc.BuildGoPlugin(
@@ -161,7 +162,7 @@ metadata:
 }
 
 func TestPatchTransformerBothNonEmptyPathAndPatch(t *testing.T) {
-	tc := testenv.NewEnvForTest(t).Set()
+	tc := pluglib.NewEnvForTest(t).Set()
 	defer tc.Reset()
 
 	tc.BuildGoPlugin(
@@ -186,7 +187,7 @@ Patch: "something"
 }
 
 func TestPatchTransformerFromFiles(t *testing.T) {
-	tc := testenv.NewEnvForTest(t).Set()
+	tc := pluglib.NewEnvForTest(t).Set()
 	defer tc.Reset()
 
 	tc.BuildGoPlugin(
@@ -268,7 +269,7 @@ spec:
 }
 
 func TestPatchTransformerWithInline(t *testing.T) {
-	tc := testenv.NewEnvForTest(t).Set()
+	tc := pluglib.NewEnvForTest(t).Set()
 	defer tc.Reset()
 
 	tc.BuildGoPlugin(

plugin/builtin/prefixsuffixtransformer/PrefixSuffixTransformer.go

@@ -9,7 +9,6 @@ import (
 	"fmt"
 
 	"sigs.k8s.io/kustomize/v3/pkg/gvk"
-	"sigs.k8s.io/kustomize/v3/pkg/ifc"
 	"sigs.k8s.io/kustomize/v3/pkg/resid"
 	"sigs.k8s.io/kustomize/v3/pkg/resmap"
 	"sigs.k8s.io/kustomize/v3/pkg/transformers"
@@ -38,7 +37,7 @@ var prefixSuffixFieldSpecsToSkip = []config.FieldSpec{
 }
 
 func (p *plugin) Config(
-	ldr ifc.Loader, rf *resmap.Factory, c []byte) (err error) {
+	h *resmap.PluginHelpers, c []byte) (err error) {
 	p.Prefix = ""
 	p.Suffix = ""
 	p.FieldSpecs = nil

plugin/builtin/prefixsuffixtransformer/PrefixSuffixTransformer_test.go

@@ -6,12 +6,13 @@ package main_test
 import (
 	"testing"
 
+	"sigs.k8s.io/kustomize/v3/pluglib"
+
 	"sigs.k8s.io/kustomize/v3/pkg/kusttest"
-	"sigs.k8s.io/kustomize/v3/pkg/plugins/testenv"
 )
 
 func TestPrefixSuffixTransformer(t *testing.T) {
-	tc := testenv.NewEnvForTest(t).Set()
+	tc := pluglib.NewEnvForTest(t).Set()
 	defer tc.Reset()
 
 	tc.BuildGoPlugin(

plugin/builtin/replicacounttransformer/ReplicaCountTransformer.go

@@ -7,7 +7,6 @@ package main
 import (
 	"fmt"
 
-	"sigs.k8s.io/kustomize/v3/pkg/ifc"
 	"sigs.k8s.io/kustomize/v3/pkg/resid"
 	"sigs.k8s.io/kustomize/v3/pkg/resmap"
 	"sigs.k8s.io/kustomize/v3/pkg/transformers"
@@ -27,7 +26,7 @@ type plugin struct {
 var KustomizePlugin plugin
 
 func (p *plugin) Config(
-	ldr ifc.Loader, rf *resmap.Factory, c []byte) (err error) {
+	h *resmap.PluginHelpers, c []byte) (err error) {
 
 	p.Replica = types.Replica{}
 	p.FieldSpecs = nil
@@ -35,7 +34,6 @@ func (p *plugin) Config(
 }
 
 func (p *plugin) Transform(m resmap.ResMap) error {
-
 	found := false
 	for i, replicaSpec := range p.FieldSpecs {
 		matcher := p.createMatcher(i)

plugin/builtin/replicacounttransformer/ReplicaCountTransformer_test.go

@@ -6,12 +6,13 @@ package main_test
 import (
 	"testing"
 
+	"sigs.k8s.io/kustomize/v3/pluglib"
+
 	"sigs.k8s.io/kustomize/v3/pkg/kusttest"
-	"sigs.k8s.io/kustomize/v3/pkg/plugins/testenv"
 )
 
 func TestReplicaCountTransformer(t *testing.T) {
-	tc := testenv.NewEnvForTest(t).Set()
+	tc := pluglib.NewEnvForTest(t).Set()
 	defer tc.Reset()
 
 	tc.BuildGoPlugin(
@@ -153,7 +154,7 @@ spec:
 }
 
 func TestMatchesCurrentID(t *testing.T) {
-	tc := testenv.NewEnvForTest(t).Set()
+	tc := pluglib.NewEnvForTest(t).Set()
 	defer tc.Reset()
 
 	tc.BuildGoPlugin("builtin", "", "PrefixSuffixTransformer")
@@ -199,7 +200,7 @@ spec:
 }
 
 func TestNoMatch(t *testing.T) {
-	tc := testenv.NewEnvForTest(t).Set()
+	tc := pluglib.NewEnvForTest(t).Set()
 	defer tc.Reset()
 
 	tc.BuildGoPlugin("builtin", "", "ReplicaCountTransformer")

plugin/builtin/secretgenerator/SecretGenerator.go

@@ -5,15 +5,13 @@
 package main
 
 import (
-	"sigs.k8s.io/kustomize/v3/pkg/ifc"
 	"sigs.k8s.io/kustomize/v3/pkg/resmap"
 	"sigs.k8s.io/kustomize/v3/pkg/types"
 	"sigs.k8s.io/yaml"
 )
 
 type plugin struct {
-	ldr              ifc.Loader
-	rf               *resmap.Factory
+	h                *resmap.PluginHelpers
 	types.ObjectMeta `json:"metadata,omitempty" yaml:"metadata,omitempty" protobuf:"bytes,1,opt,name=metadata"`
 	types.GeneratorOptions
 	types.SecretArgs
@@ -22,8 +20,7 @@ type plugin struct {
 //noinspection GoUnusedGlobalVariable
 var KustomizePlugin plugin
 
-func (p *plugin) Config(
-	ldr ifc.Loader, rf *resmap.Factory, config []byte) (err error) {
+func (p *plugin) Config(h *resmap.PluginHelpers, config []byte) (err error) {
 	p.GeneratorOptions = types.GeneratorOptions{}
 	p.SecretArgs = types.SecretArgs{}
 	err = yaml.Unmarshal(config, p)
@@ -33,11 +30,11 @@ func (p *plugin) Config(
 	if p.SecretArgs.Namespace == "" {
 		p.SecretArgs.Namespace = p.Namespace
 	}
-	p.ldr = ldr
-	p.rf = rf
+	p.h = h
 	return
 }
 
 func (p *plugin) Generate() (resmap.ResMap, error) {
-	return p.rf.FromSecretArgs(p.ldr, &p.GeneratorOptions, p.SecretArgs)
+	return p.h.ResmapFactory().FromSecretArgs(
+		p.h.Loader(), &p.GeneratorOptions, p.SecretArgs)
 }

plugin/builtin/secretgenerator/SecretGenerator_test.go

@@ -6,12 +6,13 @@ package main_test
 import (
 	"testing"
 
+	"sigs.k8s.io/kustomize/v3/pluglib"
+
 	"sigs.k8s.io/kustomize/v3/pkg/kusttest"
-	"sigs.k8s.io/kustomize/v3/pkg/plugins/testenv"
 )
 
 func TestSecretGenerator(t *testing.T) {
-	tc := testenv.NewEnvForTest(t).Set()
+	tc := pluglib.NewEnvForTest(t).Set()
 	defer tc.Reset()
 
 	tc.BuildGoPlugin(