refactor: replace interface{} with any

README.md

@@ -544,19 +544,19 @@ go func(){
 In Viper, there are a few ways to get a value depending on the value’s type.
 The following functions and methods exist:
 
- * `Get(key string) : interface{}`
+ * `Get(key string) : any`
  * `GetBool(key string) : bool`
  * `GetFloat64(key string) : float64`
  * `GetInt(key string) : int`
  * `GetIntSlice(key string) : []int`
  * `GetString(key string) : string`
- * `GetStringMap(key string) : map[string]interface{}`
+ * `GetStringMap(key string) : map[string]any`
  * `GetStringMapString(key string) : map[string]string`
  * `GetStringSlice(key string) : []string`
  * `GetTime(key string) : time.Time`
  * `GetDuration(key string) : time.Duration`
  * `IsSet(key string) : bool`
- * `AllSettings() : map[string]interface{}`
+ * `AllSettings() : map[string]any`
 
 One important thing to recognize is that each Get function will return a zero
 value if it’s not found. To check if a given key exists, the `IsSet()` method
@@ -719,8 +719,8 @@ etc.
 
 There are two methods to do this:
 
- * `Unmarshal(rawVal interface{}) : error`
- * `UnmarshalKey(key string, rawVal interface{}) : error`
+ * `Unmarshal(rawVal any) : error`
+ * `UnmarshalKey(key string, rawVal any) : error`
 
 Example:
 
@@ -745,9 +745,9 @@ you have to change the delimiter:
 ```go
 v := viper.NewWithOptions(viper.KeyDelimiter("::"))
 
-v.SetDefault("chart::values", map[string]interface{}{
-	"ingress": map[string]interface{}{
-		"annotations": map[string]interface{}{
+v.SetDefault("chart::values", map[string]any{
+	"ingress": map[string]any{
+		"annotations": map[string]any{
 			"traefik.frontend.rule.type":                 "PathPrefix",
 			"traefik.ingress.kubernetes.io/ssl-redirect": "true",
 		},
@@ -756,7 +756,7 @@ v.SetDefault("chart::values", map[string]interface{}{
 
 type config struct {
 	Chart struct{
-		Values map[string]interface{}
+		Values map[string]any
 	}
 }
 

internal/encoding/decoder.go

@@ -5,9 +5,9 @@ import (
 )
 
 // Decoder decodes the contents of b into v.
-// It's primarily used for decoding contents of a file into a map[string]interface{}.
+// It's primarily used for decoding contents of a file into a map[string]any.
 type Decoder interface {
-	Decode(b []byte, v map[string]interface{}) error
+	Decode(b []byte, v map[string]any) error
 }
 
 const (
@@ -48,7 +48,7 @@ func (e *DecoderRegistry) RegisterDecoder(format string, enc Decoder) error {
 }
 
 // Decode calls the underlying Decoder based on the format.
-func (e *DecoderRegistry) Decode(format string, b []byte, v map[string]interface{}) error {
+func (e *DecoderRegistry) Decode(format string, b []byte, v map[string]any) error {
 	e.mu.RLock()
 	decoder, ok := e.decoders[format]
 	e.mu.RUnlock()

internal/encoding/decoder_test.go

@@ -6,10 +6,10 @@ import (
 )
 
 type decoder struct {
-	v map[string]interface{}
+	v map[string]any
 }
 
-func (d decoder) Decode(_ []byte, v map[string]interface{}) error {
+func (d decoder) Decode(_ []byte, v map[string]any) error {
 	for key, value := range d.v {
 		v[key] = value
 	}
@@ -46,7 +46,7 @@ func TestDecoderRegistry_Decode(t *testing.T) {
 	t.Run("OK", func(t *testing.T) {
 		registry := NewDecoderRegistry()
 		decoder := decoder{
-			v: map[string]interface{}{
+			v: map[string]any{
 				"key": "value",
 			},
 		}
@@ -56,7 +56,7 @@ func TestDecoderRegistry_Decode(t *testing.T) {
 			t.Fatal(err)
 		}
 
-		v := map[string]interface{}{}
+		v := map[string]any{}
 
 		err = registry.Decode("myformat", []byte("key: value"), v)
 		if err != nil {
@@ -71,7 +71,7 @@ func TestDecoderRegistry_Decode(t *testing.T) {
 	t.Run("DecoderNotFound", func(t *testing.T) {
 		registry := NewDecoderRegistry()
 
-		v := map[string]interface{}{}
+		v := map[string]any{}
 
 		err := registry.Decode("myformat", nil, v)
 		if err != ErrDecoderNotFound {

internal/encoding/dotenv/codec.go

@@ -15,8 +15,8 @@ const keyDelimiter = "_"
 // (commonly called as dotenv format).
 type Codec struct{}
 
-func (Codec) Encode(v map[string]interface{}) ([]byte, error) {
-	flattened := map[string]interface{}{}
+func (Codec) Encode(v map[string]any) ([]byte, error) {
+	flattened := map[string]any{}
 
 	flattened = flattenAndMergeMap(flattened, v, "", keyDelimiter)
 
@@ -40,7 +40,7 @@ func (Codec) Encode(v map[string]interface{}) ([]byte, error) {
 	return buf.Bytes(), nil
 }
 
-func (Codec) Decode(b []byte, v map[string]interface{}) error {
+func (Codec) Decode(b []byte, v map[string]any) error {
 	var buf bytes.Buffer
 
 	_, err := buf.Write(b)

internal/encoding/dotenv/codec_test.go

@@ -15,7 +15,7 @@ const encoded = `KEY=value
 `
 
 // Viper's internal representation
-var data = map[string]interface{}{
+var data = map[string]any{
 	"KEY": "value",
 }
 
@@ -36,7 +36,7 @@ func TestCodec_Decode(t *testing.T) {
 	t.Run("OK", func(t *testing.T) {
 		codec := Codec{}
 
-		v := map[string]interface{}{}
+		v := map[string]any{}
 
 		err := codec.Decode([]byte(original), v)
 		if err != nil {
@@ -51,7 +51,7 @@ func TestCodec_Decode(t *testing.T) {
 	t.Run("InvalidData", func(t *testing.T) {
 		codec := Codec{}
 
-		v := map[string]interface{}{}
+		v := map[string]any{}
 
 		err := codec.Decode([]byte(`invalid data`), v)
 		if err == nil {

internal/encoding/dotenv/map_utils.go

@@ -9,25 +9,25 @@ import (
 // flattenAndMergeMap recursively flattens the given map into a new map
 // Code is based on the function with the same name in the main package.
 // TODO: move it to a common place
-func flattenAndMergeMap(shadow map[string]interface{}, m map[string]interface{}, prefix string, delimiter string) map[string]interface{} {
+func flattenAndMergeMap(shadow map[string]any, m map[string]any, prefix string, delimiter string) map[string]any {
 	if shadow != nil && prefix != "" && shadow[prefix] != nil {
 		// prefix is shadowed => nothing more to flatten
 		return shadow
 	}
 	if shadow == nil {
-		shadow = make(map[string]interface{})
+		shadow = make(map[string]any)
 	}
 
-	var m2 map[string]interface{}
+	var m2 map[string]any
 	if prefix != "" {
 		prefix += delimiter
 	}
 	for k, val := range m {
 		fullKey := prefix + k
 		switch val := val.(type) {
-		case map[string]interface{}:
+		case map[string]any:
 			m2 = val
-		case map[interface{}]interface{}:
+		case map[any]any:
 			m2 = cast.ToStringMap(val)
 		default:
 			// immediate value

internal/encoding/encoder.go

@@ -5,9 +5,9 @@ import (
 )
 
 // Encoder encodes the contents of v into a byte representation.
-// It's primarily used for encoding a map[string]interface{} into a file format.
+// It's primarily used for encoding a map[string]any into a file format.
 type Encoder interface {
-	Encode(v map[string]interface{}) ([]byte, error)
+	Encode(v map[string]any) ([]byte, error)
 }
 
 const (
@@ -47,7 +47,7 @@ func (e *EncoderRegistry) RegisterEncoder(format string, enc Encoder) error {
 	return nil
 }
 
-func (e *EncoderRegistry) Encode(format string, v map[string]interface{}) ([]byte, error) {
+func (e *EncoderRegistry) Encode(format string, v map[string]any) ([]byte, error) {
 	e.mu.RLock()
 	encoder, ok := e.encoders[format]
 	e.mu.RUnlock()

internal/encoding/encoder_test.go

@@ -8,7 +8,7 @@ type encoder struct {
 	b []byte
 }
 
-func (e encoder) Encode(_ map[string]interface{}) ([]byte, error) {
+func (e encoder) Encode(_ map[string]any) ([]byte, error) {
 	return e.b, nil
 }
 
@@ -49,7 +49,7 @@ func TestEncoderRegistry_Decode(t *testing.T) {
 			t.Fatal(err)
 		}
 
-		b, err := registry.Encode("myformat", map[string]interface{}{"key": "value"})
+		b, err := registry.Encode("myformat", map[string]any{"key": "value"})
 		if err != nil {
 			t.Fatal(err)
 		}
@@ -62,7 +62,7 @@ func TestEncoderRegistry_Decode(t *testing.T) {
 	t.Run("EncoderNotFound", func(t *testing.T) {
 		registry := NewEncoderRegistry()
 
-		_, err := registry.Encode("myformat", map[string]interface{}{"key": "value"})
+		_, err := registry.Encode("myformat", map[string]any{"key": "value"})
 		if err != ErrEncoderNotFound {
 			t.Fatalf("expected ErrEncoderNotFound, got: %v", err)
 		}

internal/encoding/hcl/codec.go

@@ -12,7 +12,7 @@ import (
 // TODO: add printer config to the codec?
 type Codec struct{}
 
-func (Codec) Encode(v map[string]interface{}) ([]byte, error) {
+func (Codec) Encode(v map[string]any) ([]byte, error) {
 	b, err := json.Marshal(v)
 	if err != nil {
 		return nil, err
@@ -35,6 +35,6 @@ func (Codec) Encode(v map[string]interface{}) ([]byte, error) {
 	return buf.Bytes(), nil
 }
 
-func (Codec) Decode(b []byte, v map[string]interface{}) error {
+func (Codec) Decode(b []byte, v map[string]any) error {
 	return hcl.Unmarshal(b, &v)
 }

internal/encoding/hcl/codec_test.go

@@ -45,24 +45,24 @@ const encoded = `"key" = "value"
 //
 // in case of HCL it's slightly different from Viper's internal representation
 // (eg. map is decoded into a list of maps)
-var decoded = map[string]interface{}{
+var decoded = map[string]any{
 	"key": "value",
-	"list": []interface{}{
+	"list": []any{
 		"item1",
 		"item2",
 		"item3",
 	},
-	"map": []map[string]interface{}{
+	"map": []map[string]any{
 		{
 			"key": "value",
 		},
 	},
-	"nested_map": []map[string]interface{}{
+	"nested_map": []map[string]any{
 		{
-			"map": []map[string]interface{}{
+			"map": []map[string]any{
 				{
 					"key": "value",
-					"list": []interface{}{
+					"list": []any{
 						"item1",
 						"item2",
 						"item3",
@@ -74,20 +74,20 @@ var decoded = map[string]interface{}{
 }
 
 // Viper's internal representation
-var data = map[string]interface{}{
+var data = map[string]any{
 	"key": "value",
-	"list": []interface{}{
+	"list": []any{
 		"item1",
 		"item2",
 		"item3",
 	},
-	"map": map[string]interface{}{
+	"map": map[string]any{
 		"key": "value",
 	},
-	"nested_map": map[string]interface{}{
-		"map": map[string]interface{}{
+	"nested_map": map[string]any{
+		"map": map[string]any{
 			"key": "value",
-			"list": []interface{}{
+			"list": []any{
 				"item1",
 				"item2",
 				"item3",
@@ -113,7 +113,7 @@ func TestCodec_Decode(t *testing.T) {
 	t.Run("OK", func(t *testing.T) {
 		codec := Codec{}
 
-		v := map[string]interface{}{}
+		v := map[string]any{}
 
 		err := codec.Decode([]byte(original), v)
 		if err != nil {
@@ -128,7 +128,7 @@ func TestCodec_Decode(t *testing.T) {
 	t.Run("InvalidData", func(t *testing.T) {
 		codec := Codec{}
 
-		v := map[string]interface{}{}
+		v := map[string]any{}
 
 		err := codec.Decode([]byte(`invalid data`), v)
 		if err == nil {

internal/encoding/ini/codec.go

@@ -19,11 +19,11 @@ type Codec struct {
 	LoadOptions  LoadOptions
 }
 
-func (c Codec) Encode(v map[string]interface{}) ([]byte, error) {
+func (c Codec) Encode(v map[string]any) ([]byte, error) {
 	cfg := ini.Empty()
 	ini.PrettyFormat = false
 
-	flattened := map[string]interface{}{}
+	flattened := map[string]any{}
 
 	flattened = flattenAndMergeMap(flattened, v, "", c.keyDelimiter())
 
@@ -62,7 +62,7 @@ func (c Codec) Encode(v map[string]interface{}) ([]byte, error) {
 	return buf.Bytes(), nil
 }
 
-func (c Codec) Decode(b []byte, v map[string]interface{}) error {
+func (c Codec) Decode(b []byte, v map[string]any) error {
 	cfg := ini.Empty(c.LoadOptions)
 
 	err := cfg.Append(b)

internal/encoding/ini/codec_test.go

@@ -26,19 +26,19 @@ key=value
 //
 // in case of INI it's slightly different from Viper's internal representation
 // (eg. top level keys land in a section called default)
-var decoded = map[string]interface{}{
-	"DEFAULT": map[string]interface{}{
+var decoded = map[string]any{
+	"DEFAULT": map[string]any{
 		"key": "value",
 	},
-	"map": map[string]interface{}{
+	"map": map[string]any{
 		"key": "value",
 	},
 }
 
 // Viper's internal representation
-var data = map[string]interface{}{
+var data = map[string]any{
 	"key": "value",
-	"map": map[string]interface{}{
+	"map": map[string]any{
 		"key": "value",
 	},
 }
@@ -60,11 +60,11 @@ func TestCodec_Encode(t *testing.T) {
 	t.Run("Default", func(t *testing.T) {
 		codec := Codec{}
 
-		data := map[string]interface{}{
-			"default": map[string]interface{}{
+		data := map[string]any{
+			"default": map[string]any{
 				"key": "value",
 			},
-			"map": map[string]interface{}{
+			"map": map[string]any{
 				"key": "value",
 			},
 		}
@@ -84,7 +84,7 @@ func TestCodec_Decode(t *testing.T) {
 	t.Run("OK", func(t *testing.T) {
 		codec := Codec{}
 
-		v := map[string]interface{}{}
+		v := map[string]any{}
 
 		err := codec.Decode([]byte(original), v)
 		if err != nil {
@@ -99,7 +99,7 @@ func TestCodec_Decode(t *testing.T) {
 	t.Run("InvalidData", func(t *testing.T) {
 		codec := Codec{}
 
-		v := map[string]interface{}{}
+		v := map[string]any{}
 
 		err := codec.Decode([]byte(`invalid data`), v)
 		if err == nil {

internal/encoding/ini/map_utils.go

@@ -15,22 +15,22 @@ import (
 // In case intermediate keys do not exist, or map to a non-map value,
 // a new map is created and inserted, and the search continues from there:
 // the initial map "m" may be modified!
-func deepSearch(m map[string]interface{}, path []string) map[string]interface{} {
+func deepSearch(m map[string]any, path []string) map[string]any {
 	for _, k := range path {
 		m2, ok := m[k]
 		if !ok {
 			// intermediate key does not exist
 			// => create it and continue from there
-			m3 := make(map[string]interface{})
+			m3 := make(map[string]any)
 			m[k] = m3
 			m = m3
 			continue
 		}
-		m3, ok := m2.(map[string]interface{})
+		m3, ok := m2.(map[string]any)
 		if !ok {
 			// intermediate key is a value
 			// => replace with a new map
-			m3 = make(map[string]interface{})
+			m3 = make(map[string]any)
 			m[k] = m3
 		}
 		// continue search from here
@@ -42,25 +42,25 @@ func deepSearch(m map[string]interface{}, path []string) map[string]interface{}
 // flattenAndMergeMap recursively flattens the given map into a new map
 // Code is based on the function with the same name in the main package.
 // TODO: move it to a common place
-func flattenAndMergeMap(shadow map[string]interface{}, m map[string]interface{}, prefix string, delimiter string) map[string]interface{} {
+func flattenAndMergeMap(shadow map[string]any, m map[string]any, prefix string, delimiter string) map[string]any {
 	if shadow != nil && prefix != "" && shadow[prefix] != nil {
 		// prefix is shadowed => nothing more to flatten
 		return shadow
 	}
 	if shadow == nil {
-		shadow = make(map[string]interface{})
+		shadow = make(map[string]any)
 	}
 
-	var m2 map[string]interface{}
+	var m2 map[string]any
 	if prefix != "" {
 		prefix += delimiter
 	}
 	for k, val := range m {
 		fullKey := prefix + k
 		switch val := val.(type) {
-		case map[string]interface{}:
+		case map[string]any:
 			m2 = val
-		case map[interface{}]interface{}:
+		case map[any]any:
 			m2 = cast.ToStringMap(val)
 		default:
 			// immediate value

internal/encoding/javaproperties/codec.go

@@ -20,12 +20,12 @@ type Codec struct {
 	Properties *properties.Properties
 }
 
-func (c *Codec) Encode(v map[string]interface{}) ([]byte, error) {
+func (c *Codec) Encode(v map[string]any) ([]byte, error) {
 	if c.Properties == nil {
 		c.Properties = properties.NewProperties()
 	}
 
-	flattened := map[string]interface{}{}
+	flattened := map[string]any{}
 
 	flattened = flattenAndMergeMap(flattened, v, "", c.keyDelimiter())
 
@@ -54,7 +54,7 @@ func (c *Codec) Encode(v map[string]interface{}) ([]byte, error) {
 	return buf.Bytes(), nil
 }
 
-func (c *Codec) Decode(b []byte, v map[string]interface{}) error {
+func (c *Codec) Decode(b []byte, v map[string]any) error {
 	var err error
 	c.Properties, err = properties.Load(b, properties.UTF8)
 	if err != nil {

internal/encoding/javaproperties/codec_test.go

@@ -17,9 +17,9 @@ map.key = value
 `
 
 // Viper's internal representation
-var data = map[string]interface{}{
+var data = map[string]any{
 	"key": "value",
-	"map": map[string]interface{}{
+	"map": map[string]any{
 		"key": "value",
 	},
 }
@@ -41,7 +41,7 @@ func TestCodec_Decode(t *testing.T) {
 	t.Run("OK", func(t *testing.T) {
 		codec := Codec{}
 
-		v := map[string]interface{}{}
+		v := map[string]any{}
 
 		err := codec.Decode([]byte(original), v)
 		if err != nil {
@@ -58,7 +58,7 @@ func TestCodec_Decode(t *testing.T) {
 
 		codec := Codec{}
 
-		v := map[string]interface{}{}
+		v := map[string]any{}
 
 		codec.Decode([]byte(``), v)
 
@@ -71,7 +71,7 @@ func TestCodec_Decode(t *testing.T) {
 func TestCodec_DecodeEncode(t *testing.T) {
 	codec := Codec{}
 
-	v := map[string]interface{}{}
+	v := map[string]any{}
 
 	err := codec.Decode([]byte(original), v)
 	if err != nil {

internal/encoding/javaproperties/map_utils.go

@@ -15,22 +15,22 @@ import (
 // In case intermediate keys do not exist, or map to a non-map value,
 // a new map is created and inserted, and the search continues from there:
 // the initial map "m" may be modified!
-func deepSearch(m map[string]interface{}, path []string) map[string]interface{} {
+func deepSearch(m map[string]any, path []string) map[string]any {
 	for _, k := range path {
 		m2, ok := m[k]
 		if !ok {
 			// intermediate key does not exist
 			// => create it and continue from there
-			m3 := make(map[string]interface{})
+			m3 := make(map[string]any)
 			m[k] = m3
 			m = m3
 			continue
 		}
-		m3, ok := m2.(map[string]interface{})
+		m3, ok := m2.(map[string]any)
 		if !ok {
 			// intermediate key is a value
 			// => replace with a new map
-			m3 = make(map[string]interface{})
+			m3 = make(map[string]any)
 			m[k] = m3
 		}
 		// continue search from here
@@ -42,25 +42,25 @@ func deepSearch(m map[string]interface{}, path []string) map[string]interface{}
 // flattenAndMergeMap recursively flattens the given map into a new map
 // Code is based on the function with the same name in the main package.
 // TODO: move it to a common place
-func flattenAndMergeMap(shadow map[string]interface{}, m map[string]interface{}, prefix string, delimiter string) map[string]interface{} {
+func flattenAndMergeMap(shadow map[string]any, m map[string]any, prefix string, delimiter string) map[string]any {
 	if shadow != nil && prefix != "" && shadow[prefix] != nil {
 		// prefix is shadowed => nothing more to flatten
 		return shadow
 	}
 	if shadow == nil {
-		shadow = make(map[string]interface{})
+		shadow = make(map[string]any)
 	}
 
-	var m2 map[string]interface{}
+	var m2 map[string]any
 	if prefix != "" {
 		prefix += delimiter
 	}
 	for k, val := range m {
 		fullKey := prefix + k
 		switch val := val.(type) {
-		case map[string]interface{}:
+		case map[string]any:
 			m2 = val
-		case map[interface{}]interface{}:
+		case map[any]any:
 			m2 = cast.ToStringMap(val)
 		default:
 			// immediate value

internal/encoding/json/codec.go

@@ -7,11 +7,11 @@ import (
 // Codec implements the encoding.Encoder and encoding.Decoder interfaces for JSON encoding.
 type Codec struct{}
 
-func (Codec) Encode(v map[string]interface{}) ([]byte, error) {
+func (Codec) Encode(v map[string]any) ([]byte, error) {
 	// TODO: expose prefix and indent in the Codec as setting?
 	return json.MarshalIndent(v, "", "  ")
 }
 
-func (Codec) Decode(b []byte, v map[string]interface{}) error {
+func (Codec) Decode(b []byte, v map[string]any) error {
 	return json.Unmarshal(b, &v)
 }

internal/encoding/json/codec_test.go

@@ -29,20 +29,20 @@ const encoded = `{
 }`
 
 // Viper's internal representation
-var data = map[string]interface{}{
+var data = map[string]any{
 	"key": "value",
-	"list": []interface{}{
+	"list": []any{
 		"item1",
 		"item2",
 		"item3",
 	},
-	"map": map[string]interface{}{
+	"map": map[string]any{
 		"key": "value",
 	},
-	"nested_map": map[string]interface{}{
-		"map": map[string]interface{}{
+	"nested_map": map[string]any{
+		"map": map[string]any{
 			"key": "value",
-			"list": []interface{}{
+			"list": []any{
 				"item1",
 				"item2",
 				"item3",
@@ -68,7 +68,7 @@ func TestCodec_Decode(t *testing.T) {
 	t.Run("OK", func(t *testing.T) {
 		codec := Codec{}
 
-		v := map[string]interface{}{}
+		v := map[string]any{}
 
 		err := codec.Decode([]byte(encoded), v)
 		if err != nil {
@@ -83,7 +83,7 @@ func TestCodec_Decode(t *testing.T) {
 	t.Run("InvalidData", func(t *testing.T) {
 		codec := Codec{}
 
-		v := map[string]interface{}{}
+		v := map[string]any{}
 
 		err := codec.Decode([]byte(`invalid data`), v)
 		if err == nil {

internal/encoding/toml/codec.go

@@ -7,10 +7,10 @@ import (
 // Codec implements the encoding.Encoder and encoding.Decoder interfaces for TOML encoding.
 type Codec struct{}
 
-func (Codec) Encode(v map[string]interface{}) ([]byte, error) {
+func (Codec) Encode(v map[string]any) ([]byte, error) {
 	return toml.Marshal(v)
 }
 
-func (Codec) Decode(b []byte, v map[string]interface{}) error {
+func (Codec) Decode(b []byte, v map[string]any) error {
 	return toml.Unmarshal(b, &v)
 }

internal/encoding/toml/codec_test.go

@@ -39,20 +39,20 @@ list = ['item1', 'item2', 'item3']
 `
 
 // Viper's internal representation
-var data = map[string]interface{}{
+var data = map[string]any{
 	"key": "value",
-	"list": []interface{}{
+	"list": []any{
 		"item1",
 		"item2",
 		"item3",
 	},
-	"map": map[string]interface{}{
+	"map": map[string]any{
 		"key": "value",
 	},
-	"nested_map": map[string]interface{}{
-		"map": map[string]interface{}{
+	"nested_map": map[string]any{
+		"map": map[string]any{
 			"key": "value",
-			"list": []interface{}{
+			"list": []any{
 				"item1",
 				"item2",
 				"item3",
@@ -78,7 +78,7 @@ func TestCodec_Decode(t *testing.T) {
 	t.Run("OK", func(t *testing.T) {
 		codec := Codec{}
 
-		v := map[string]interface{}{}
+		v := map[string]any{}
 
 		err := codec.Decode([]byte(original), v)
 		if err != nil {
@@ -93,7 +93,7 @@ func TestCodec_Decode(t *testing.T) {
 	t.Run("InvalidData", func(t *testing.T) {
 		codec := Codec{}
 
-		v := map[string]interface{}{}
+		v := map[string]any{}
 
 		err := codec.Decode([]byte(`invalid data`), v)
 		if err == nil {

internal/encoding/yaml/codec.go

@@ -5,10 +5,10 @@ import "gopkg.in/yaml.v3"
 // Codec implements the encoding.Encoder and encoding.Decoder interfaces for YAML encoding.
 type Codec struct{}
 
-func (Codec) Encode(v map[string]interface{}) ([]byte, error) {
+func (Codec) Encode(v map[string]any) ([]byte, error) {
 	return yaml.Marshal(v)
 }
 
-func (Codec) Decode(b []byte, v map[string]interface{}) error {
+func (Codec) Decode(b []byte, v map[string]any) error {
 	return yaml.Unmarshal(b, &v)
 }

internal/encoding/yaml/codec_test.go

@@ -47,20 +47,20 @@ nested_map:
 //
 // in case of YAML it's slightly different from Viper's internal representation
 // (eg. map is decoded into a map with interface key)
-var decoded = map[string]interface{}{
+var decoded = map[string]any{
 	"key": "value",
-	"list": []interface{}{
+	"list": []any{
 		"item1",
 		"item2",
 		"item3",
 	},
-	"map": map[string]interface{}{
+	"map": map[string]any{
 		"key": "value",
 	},
-	"nested_map": map[string]interface{}{
-		"map": map[string]interface{}{
+	"nested_map": map[string]any{
+		"map": map[string]any{
 			"key": "value",
-			"list": []interface{}{
+			"list": []any{
 				"item1",
 				"item2",
 				"item3",
@@ -70,20 +70,20 @@ var decoded = map[string]interface{}{
 }
 
 // Viper's internal representation
-var data = map[string]interface{}{
+var data = map[string]any{
 	"key": "value",
-	"list": []interface{}{
+	"list": []any{
 		"item1",
 		"item2",
 		"item3",
 	},
-	"map": map[string]interface{}{
+	"map": map[string]any{
 		"key": "value",
 	},
-	"nested_map": map[string]interface{}{
-		"map": map[string]interface{}{
+	"nested_map": map[string]any{
+		"map": map[string]any{
 			"key": "value",
-			"list": []interface{}{
+			"list": []any{
 				"item1",
 				"item2",
 				"item3",
@@ -109,7 +109,7 @@ func TestCodec_Decode(t *testing.T) {
 	t.Run("OK", func(t *testing.T) {
 		codec := Codec{}
 
-		v := map[string]interface{}{}
+		v := map[string]any{}
 
 		err := codec.Decode([]byte(original), v)
 		if err != nil {
@@ -124,7 +124,7 @@ func TestCodec_Decode(t *testing.T) {
 	t.Run("InvalidData", func(t *testing.T) {
 		codec := Codec{}
 
-		v := map[string]interface{}{}
+		v := map[string]any{}
 
 		err := codec.Decode([]byte(`invalid data`), v)
 		if err == nil {

logger.go

@@ -16,30 +16,30 @@ type Logger interface {
 	//
 	// Even more fine-grained information than Debug events.
 	// Loggers not supporting this level should fall back to Debug.
-	Trace(msg string, keyvals ...interface{})
+	Trace(msg string, keyvals ...any)
 
 	// Debug logs a Debug event.
 	//
 	// A verbose series of information events.
 	// They are useful when debugging the system.
-	Debug(msg string, keyvals ...interface{})
+	Debug(msg string, keyvals ...any)
 
 	// Info logs an Info event.
 	//
 	// General information about what's happening inside the system.
-	Info(msg string, keyvals ...interface{})
+	Info(msg string, keyvals ...any)
 
 	// Warn logs a Warn(ing) event.
 	//
 	// Non-critical events that should be looked at.
-	Warn(msg string, keyvals ...interface{})
+	Warn(msg string, keyvals ...any)
 
 	// Error logs an Error event.
 	//
 	// Critical events that require immediate attention.
 	// Loggers commonly provide Fatal and Panic levels above Error level,
 	// but exiting and panicking is out of scope for a logging library.
-	Error(msg string, keyvals ...interface{})
+	Error(msg string, keyvals ...any)
 }
 
 // WithLogger sets a custom logger.

overrides_test.go

@@ -46,11 +46,11 @@ func TestNestedOverrides(t *testing.T) {
 	deepCheckValue(assert, v, overrideLayer, []string{"tom", "size"}, 4)
 
 	// Case 4: key:value overridden by a map
-	v = overrideDefault(assert, "tom.size", 4, "tom", map[string]interface{}{"age": 10}) // "tom.size" is first given "4" as default value, then "tom" is overridden by map{"age":10}
-	assert.Equal(4, v.Get("tom.size"))                                                   // "tom.size" should still be reachable
-	assert.Equal(10, v.Get("tom.age"))                                                   // new value should be there
-	deepCheckValue(assert, v, overrideLayer, []string{"tom", "age"}, 10)                 // new value should be there
-	v = override(assert, "tom.size", 4, "tom", map[string]interface{}{"age": 10})
+	v = overrideDefault(assert, "tom.size", 4, "tom", map[string]any{"age": 10}) // "tom.size" is first given "4" as default value, then "tom" is overridden by map{"age":10}
+	assert.Equal(4, v.Get("tom.size"))                                           // "tom.size" should still be reachable
+	assert.Equal(10, v.Get("tom.age"))                                           // new value should be there
+	deepCheckValue(assert, v, overrideLayer, []string{"tom", "age"}, 10)         // new value should be there
+	v = override(assert, "tom.size", 4, "tom", map[string]any{"age": 10})
 	assert.Nil(v.Get("tom.size"))
 	assert.Equal(10, v.Get("tom.age"))
 	deepCheckValue(assert, v, overrideLayer, []string{"tom", "age"}, 10)
@@ -75,11 +75,11 @@ func TestNestedOverrides(t *testing.T) {
 	}
 }
 
-func overrideDefault(assert *assert.Assertions, firstPath string, firstValue interface{}, secondPath string, secondValue interface{}) *Viper {
+func overrideDefault(assert *assert.Assertions, firstPath string, firstValue any, secondPath string, secondValue any) *Viper {
 	return overrideFromLayer(defaultLayer, assert, firstPath, firstValue, secondPath, secondValue)
 }
 
-func override(assert *assert.Assertions, firstPath string, firstValue interface{}, secondPath string, secondValue interface{}) *Viper {
+func override(assert *assert.Assertions, firstPath string, firstValue any, secondPath string, secondValue any) *Viper {
 	return overrideFromLayer(overrideLayer, assert, firstPath, firstValue, secondPath, secondValue)
 }
 
@@ -94,7 +94,7 @@ func override(assert *assert.Assertions, firstPath string, firstValue interface{
 //
 // After each assignment, the value is checked, retrieved both by its full path
 // and by its key sequence (successive maps).
-func overrideFromLayer(l layer, assert *assert.Assertions, firstPath string, firstValue interface{}, secondPath string, secondValue interface{}) *Viper {
+func overrideFromLayer(l layer, assert *assert.Assertions, firstPath string, firstValue any, secondPath string, secondValue any) *Viper {
 	v := New()
 	firstKeys := strings.Split(firstPath, v.keyDelim)
 	if assert == nil ||
@@ -128,14 +128,14 @@ func overrideFromLayer(l layer, assert *assert.Assertions, firstPath string, fir
 
 // deepCheckValue checks that all given keys correspond to a valid path in the
 // configuration map of the given layer, and that the final value equals the one given
-func deepCheckValue(assert *assert.Assertions, v *Viper, l layer, keys []string, value interface{}) {
+func deepCheckValue(assert *assert.Assertions, v *Viper, l layer, keys []string, value any) {
 	if assert == nil || v == nil ||
 		len(keys) == 0 || len(keys[0]) == 0 {
 		return
 	}
 
 	// init
-	var val interface{}
+	var val any
 	var ms string
 	switch l {
 	case defaultLayer:
@@ -147,22 +147,22 @@ func deepCheckValue(assert *assert.Assertions, v *Viper, l layer, keys []string,
 	}
 
 	// loop through map
-	var m map[string]interface{}
+	var m map[string]any
 	err := false
 	for _, k := range keys {
 		if val == nil {
-			assert.Fail(fmt.Sprintf("%s is not a map[string]interface{}", ms))
+			assert.Fail(fmt.Sprintf("%s is not a map[string]any", ms))
 			return
 		}
 
 		// deep scan of the map to get the final value
 		switch val := val.(type) {
-		case map[interface{}]interface{}:
+		case map[any]any:
 			m = cast.ToStringMap(val)
-		case map[string]interface{}:
+		case map[string]any:
 			m = val
 		default:
-			assert.Fail(fmt.Sprintf("%s is not a map[string]interface{}", ms))
+			assert.Fail(fmt.Sprintf("%s is not a map[string]any", ms))
 			return
 		}
 		ms = ms + "[\"" + k + "\"]"

util.go

@@ -39,11 +39,11 @@ func (pe ConfigParseError) Unwrap() error {
 
 // toCaseInsensitiveValue checks if the value is a  map;
 // if so, create a copy and lower-case the keys recursively.
-func toCaseInsensitiveValue(value interface{}) interface{} {
+func toCaseInsensitiveValue(value any) any {
 	switch v := value.(type) {
-	case map[interface{}]interface{}:
+	case map[any]any:
 		value = copyAndInsensitiviseMap(cast.ToStringMap(v))
-	case map[string]interface{}:
+	case map[string]any:
 		value = copyAndInsensitiviseMap(v)
 	}
 
@@ -52,15 +52,15 @@ func toCaseInsensitiveValue(value interface{}) interface{} {
 
 // copyAndInsensitiviseMap behaves like insensitiviseMap, but creates a copy of
 // any map it makes case insensitive.
-func copyAndInsensitiviseMap(m map[string]interface{}) map[string]interface{} {
-	nm := make(map[string]interface{})
+func copyAndInsensitiviseMap(m map[string]any) map[string]any {
+	nm := make(map[string]any)
 
 	for key, val := range m {
 		lkey := strings.ToLower(key)
 		switch v := val.(type) {
-		case map[interface{}]interface{}:
+		case map[any]any:
 			nm[lkey] = copyAndInsensitiviseMap(cast.ToStringMap(v))
-		case map[string]interface{}:
+		case map[string]any:
 			nm[lkey] = copyAndInsensitiviseMap(v)
 		default:
 			nm[lkey] = v
@@ -70,23 +70,23 @@ func copyAndInsensitiviseMap(m map[string]interface{}) map[string]interface{} {
 	return nm
 }
 
-func insensitiviseVal(val interface{}) interface{} {
+func insensitiviseVal(val any) any {
 	switch v := val.(type) {
-	case map[interface{}]interface{}:
+	case map[any]any:
 		// nested map: cast and recursively insensitivise
 		val = cast.ToStringMap(val)
-		insensitiviseMap(val.(map[string]interface{}))
-	case map[string]interface{}:
+		insensitiviseMap(val.(map[string]any))
+	case map[string]any:
 		// nested map: recursively insensitivise
 		insensitiviseMap(v)
-	case []interface{}:
+	case []any:
 		// nested array: recursively insensitivise
 		insensitiveArray(v)
 	}
 	return val
 }
 
-func insensitiviseMap(m map[string]interface{}) {
+func insensitiviseMap(m map[string]any) {
 	for key, val := range m {
 		val = insensitiviseVal(val)
 		lower := strings.ToLower(key)
@@ -99,7 +99,7 @@ func insensitiviseMap(m map[string]interface{}) {
 	}
 }
 
-func insensitiveArray(a []interface{}) {
+func insensitiveArray(a []any) {
 	for i, val := range a {
 		a[i] = insensitiviseVal(val)
 	}
@@ -198,22 +198,22 @@ func parseSizeInBytes(sizeStr string) uint {
 // In case intermediate keys do not exist, or map to a non-map value,
 // a new map is created and inserted, and the search continues from there:
 // the initial map "m" may be modified!
-func deepSearch(m map[string]interface{}, path []string) map[string]interface{} {
+func deepSearch(m map[string]any, path []string) map[string]any {
 	for _, k := range path {
 		m2, ok := m[k]
 		if !ok {
 			// intermediate key does not exist
 			// => create it and continue from there
-			m3 := make(map[string]interface{})
+			m3 := make(map[string]any)
 			m[k] = m3
 			m = m3
 			continue
 		}
-		m3, ok := m2.(map[string]interface{})
+		m3, ok := m2.(map[string]any)
 		if !ok {
 			// intermediate key is a value
 			// => replace with a new map
-			m3 = make(map[string]interface{})
+			m3 = make(map[string]any)
 			m[k] = m3
 		}
 		// continue search from here

util_test.go

@@ -21,16 +21,16 @@ import (
 
 func TestCopyAndInsensitiviseMap(t *testing.T) {
 	var (
-		given = map[string]interface{}{
+		given = map[string]any{
 			"Foo": 32,
-			"Bar": map[interface{}]interface{}{
+			"Bar": map[any]any{
 				"ABc": "A",
 				"cDE": "B",
 			},
 		}
-		expected = map[string]interface{}{
+		expected = map[string]any{
 			"foo": 32,
-			"bar": map[string]interface{}{
+			"bar": map[string]any{
 				"abc": "A",
 				"cde": "B",
 			},
@@ -51,7 +51,7 @@ func TestCopyAndInsensitiviseMap(t *testing.T) {
 		t.Fatal("Input map changed")
 	}
 
-	m := given["Bar"].(map[interface{}]interface{})
+	m := given["Bar"].(map[any]any)
 	if _, ok := m["ABc"]; !ok {
 		t.Fatal("Input map changed")
 	}

viper.go

@@ -207,10 +207,10 @@ type Viper struct {
 	allowEmptyEnv       bool
 
 	parents        []string
-	config         map[string]interface{}
-	override       map[string]interface{}
-	defaults       map[string]interface{}
-	kvstore        map[string]interface{}
+	config         map[string]any
+	override       map[string]any
+	defaults       map[string]any
+	kvstore        map[string]any
 	pflags         map[string]FlagValue
 	env            map[string][]string
 	aliases        map[string]string
@@ -232,11 +232,11 @@ func New() *Viper {
 	v.configName = "config"
 	v.configPermissions = os.FileMode(0o644)
 	v.fs = afero.NewOsFs()
-	v.config = make(map[string]interface{})
+	v.config = make(map[string]any)
 	v.parents = []string{}
-	v.override = make(map[string]interface{})
-	v.defaults = make(map[string]interface{})
-	v.kvstore = make(map[string]interface{})
+	v.override = make(map[string]any)
+	v.defaults = make(map[string]any)
+	v.kvstore = make(map[string]any)
 	v.pflags = make(map[string]FlagValue)
 	v.env = make(map[string][]string)
 	v.aliases = make(map[string]string)
@@ -660,7 +660,7 @@ func (v *Viper) providerPathExists(p *defaultRemoteProvider) bool {
 // searchMap recursively searches for a value for path in source map.
 // Returns nil if not found.
 // Note: This assumes that the path entries and map keys are lower cased.
-func (v *Viper) searchMap(source map[string]interface{}, path []string) interface{} {
+func (v *Viper) searchMap(source map[string]any, path []string) any {
 	if len(path) == 0 {
 		return source
 	}
@@ -674,9 +674,9 @@ func (v *Viper) searchMap(source map[string]interface{}, path []string) interfac
 
 		// Nested case
 		switch next := next.(type) {
-		case map[interface{}]interface{}:
+		case map[any]any:
 			return v.searchMap(cast.ToStringMap(next), path[1:])
-		case map[string]interface{}:
+		case map[string]any:
 			// Type assertion is safe here since it is only reached
 			// if the type of `next` is the same as the type being asserted
 			return v.searchMap(next, path[1:])
@@ -699,7 +699,7 @@ func (v *Viper) searchMap(source map[string]interface{}, path []string) interfac
 // in their keys).
 //
 // Note: This assumes that the path entries and map keys are lower cased.
-func (v *Viper) searchIndexableWithPathPrefixes(source interface{}, path []string) interface{} {
+func (v *Viper) searchIndexableWithPathPrefixes(source any, path []string) any {
 	if len(path) == 0 {
 		return source
 	}
@@ -708,11 +708,11 @@ func (v *Viper) searchIndexableWithPathPrefixes(source interface{}, path []strin
 	for i := len(path); i > 0; i-- {
 		prefixKey := strings.ToLower(strings.Join(path[0:i], v.keyDelim))
 
-		var val interface{}
+		var val any
 		switch sourceIndexable := source.(type) {
-		case []interface{}:
+		case []any:
 			val = v.searchSliceWithPathPrefixes(sourceIndexable, prefixKey, i, path)
-		case map[string]interface{}:
+		case map[string]any:
 			val = v.searchMapWithPathPrefixes(sourceIndexable, prefixKey, i, path)
 		}
 		if val != nil {
@@ -729,11 +729,11 @@ func (v *Viper) searchIndexableWithPathPrefixes(source interface{}, path []strin
 // This function is part of the searchIndexableWithPathPrefixes recurring search and
 // should not be called directly from functions other than searchIndexableWithPathPrefixes.
 func (v *Viper) searchSliceWithPathPrefixes(
-	sourceSlice []interface{},
+	sourceSlice []any,
 	prefixKey string,
 	pathIndex int,
 	path []string,
-) interface{} {
+) any {
 	// if the prefixKey is not a number or it is out of bounds of the slice
 	index, err := strconv.Atoi(prefixKey)
 	if err != nil || len(sourceSlice) <= index {
@@ -748,9 +748,9 @@ func (v *Viper) searchSliceWithPathPrefixes(
 	}
 
 	switch n := next.(type) {
-	case map[interface{}]interface{}:
+	case map[any]any:
 		return v.searchIndexableWithPathPrefixes(cast.ToStringMap(n), path[pathIndex:])
-	case map[string]interface{}, []interface{}:
+	case map[string]any, []any:
 		return v.searchIndexableWithPathPrefixes(n, path[pathIndex:])
 	default:
 		// got a value but nested key expected, do nothing and look for next prefix
@@ -765,11 +765,11 @@ func (v *Viper) searchSliceWithPathPrefixes(
 // This function is part of the searchIndexableWithPathPrefixes recurring search and
 // should not be called directly from functions other than searchIndexableWithPathPrefixes.
 func (v *Viper) searchMapWithPathPrefixes(
-	sourceMap map[string]interface{},
+	sourceMap map[string]any,
 	prefixKey string,
 	pathIndex int,
 	path []string,
-) interface{} {
+) any {
 	next, ok := sourceMap[prefixKey]
 	if !ok {
 		return nil
@@ -782,9 +782,9 @@ func (v *Viper) searchMapWithPathPrefixes(
 
 	// Nested case
 	switch n := next.(type) {
-	case map[interface{}]interface{}:
+	case map[any]any:
 		return v.searchIndexableWithPathPrefixes(cast.ToStringMap(n), path[pathIndex:])
-	case map[string]interface{}, []interface{}:
+	case map[string]any, []any:
 		return v.searchIndexableWithPathPrefixes(n, path[pathIndex:])
 	default:
 		// got a value but nested key expected, do nothing and look for next prefix
@@ -799,8 +799,8 @@ func (v *Viper) searchMapWithPathPrefixes(
 // e.g., if "foo.bar" has a value in the given map, it “shadows”
 //
 //	"foo.bar.baz" in a lower-priority map
-func (v *Viper) isPathShadowedInDeepMap(path []string, m map[string]interface{}) string {
-	var parentVal interface{}
+func (v *Viper) isPathShadowedInDeepMap(path []string, m map[string]any) string {
+	var parentVal any
 	for i := 1; i < len(path); i++ {
 		parentVal = v.searchMap(m, path[0:i])
 		if parentVal == nil {
@@ -808,9 +808,9 @@ func (v *Viper) isPathShadowedInDeepMap(path []string, m map[string]interface{})
 			return ""
 		}
 		switch parentVal.(type) {
-		case map[interface{}]interface{}:
+		case map[any]any:
 			continue
-		case map[string]interface{}:
+		case map[string]any:
 			continue
 		default:
 			// parentVal is a regular value which shadows "path"
@@ -825,9 +825,9 @@ func (v *Viper) isPathShadowedInDeepMap(path []string, m map[string]interface{})
 // e.g., if "foo.bar" has a value in the given map, it “shadows”
 //
 //	"foo.bar.baz" in a lower-priority map
-func (v *Viper) isPathShadowedInFlatMap(path []string, mi interface{}) string {
+func (v *Viper) isPathShadowedInFlatMap(path []string, mi any) string {
 	// unify input map
-	var m map[string]interface{}
+	var m map[string]any
 	switch mi.(type) {
 	case map[string]string, map[string]FlagValue:
 		m = cast.ToStringMap(mi)
@@ -894,9 +894,9 @@ func GetViper() *Viper {
 // override, flag, env, config file, key/value store, default
 //
 // Get returns an interface. For a specific value use one of the Get____ methods.
-func Get(key string) interface{} { return v.Get(key) }
+func Get(key string) any { return v.Get(key) }
 
-func (v *Viper) Get(key string) interface{} {
+func (v *Viper) Get(key string) any {
 	lcaseKey := strings.ToLower(key)
 	val := v.find(lcaseKey, true)
 	if val == nil {
@@ -1066,9 +1066,9 @@ func (v *Viper) GetStringSlice(key string) []string {
 }
 
 // GetStringMap returns the value associated with the key as a map of interfaces.
-func GetStringMap(key string) map[string]interface{} { return v.GetStringMap(key) }
+func GetStringMap(key string) map[string]any { return v.GetStringMap(key) }
 
-func (v *Viper) GetStringMap(key string) map[string]interface{} {
+func (v *Viper) GetStringMap(key string) map[string]any {
 	return cast.ToStringMap(v.Get(key))
 }
 
@@ -1096,27 +1096,27 @@ func (v *Viper) GetSizeInBytes(key string) uint {
 }
 
 // UnmarshalKey takes a single key and unmarshals it into a Struct.
-func UnmarshalKey(key string, rawVal interface{}, opts ...DecoderConfigOption) error {
+func UnmarshalKey(key string, rawVal any, opts ...DecoderConfigOption) error {
 	return v.UnmarshalKey(key, rawVal, opts...)
 }
 
-func (v *Viper) UnmarshalKey(key string, rawVal interface{}, opts ...DecoderConfigOption) error {
+func (v *Viper) UnmarshalKey(key string, rawVal any, opts ...DecoderConfigOption) error {
 	return decode(v.Get(key), defaultDecoderConfig(rawVal, opts...))
 }
 
 // Unmarshal unmarshals the config into a Struct. Make sure that the tags
 // on the fields of the structure are properly set.
-func Unmarshal(rawVal interface{}, opts ...DecoderConfigOption) error {
+func Unmarshal(rawVal any, opts ...DecoderConfigOption) error {
 	return v.Unmarshal(rawVal, opts...)
 }
 
-func (v *Viper) Unmarshal(rawVal interface{}, opts ...DecoderConfigOption) error {
+func (v *Viper) Unmarshal(rawVal any, opts ...DecoderConfigOption) error {
 	return decode(v.AllSettings(), defaultDecoderConfig(rawVal, opts...))
 }
 
 // defaultDecoderConfig returns default mapstructure.DecoderConfig with support
 // of time.Duration values & string slices
-func defaultDecoderConfig(output interface{}, opts ...DecoderConfigOption) *mapstructure.DecoderConfig {
+func defaultDecoderConfig(output any, opts ...DecoderConfigOption) *mapstructure.DecoderConfig {
 	c := &mapstructure.DecoderConfig{
 		Metadata:         nil,
 		Result:           output,
@@ -1133,7 +1133,7 @@ func defaultDecoderConfig(output interface{}, opts ...DecoderConfigOption) *maps
 }
 
 // A wrapper around mapstructure.Decode that mimics the WeakDecode functionality
-func decode(input interface{}, config *mapstructure.DecoderConfig) error {
+func decode(input any, config *mapstructure.DecoderConfig) error {
 	decoder, err := mapstructure.NewDecoder(config)
 	if err != nil {
 		return err
@@ -1143,11 +1143,11 @@ func decode(input interface{}, config *mapstructure.DecoderConfig) error {
 
 // UnmarshalExact unmarshals the config into a Struct, erroring if a field is nonexistent
 // in the destination struct.
-func UnmarshalExact(rawVal interface{}, opts ...DecoderConfigOption) error {
+func UnmarshalExact(rawVal any, opts ...DecoderConfigOption) error {
 	return v.UnmarshalExact(rawVal, opts...)
 }
 
-func (v *Viper) UnmarshalExact(rawVal interface{}, opts ...DecoderConfigOption) error {
+func (v *Viper) UnmarshalExact(rawVal any, opts ...DecoderConfigOption) error {
 	config := defaultDecoderConfig(rawVal, opts...)
 	config.ErrorUnused = true
 
@@ -1244,9 +1244,9 @@ func (v *Viper) MustBindEnv(input ...string) {
 // corresponds to a flag, the flag's default value is returned.
 //
 // Note: this assumes a lower-cased key given.
-func (v *Viper) find(lcaseKey string, flagDefault bool) interface{} {
+func (v *Viper) find(lcaseKey string, flagDefault bool) any {
 	var (
-		val    interface{}
+		val    any
 		exists bool
 		path   = strings.Split(lcaseKey, v.keyDelim)
 		nested = len(path) > 1
@@ -1405,19 +1405,19 @@ func readAsCSV(val string) ([]string, error) {
 }
 
 // mostly copied from pflag's implementation of this operation here https://github.com/spf13/pflag/blob/master/string_to_string.go#L79
-// alterations are: errors are swallowed, map[string]interface{} is returned in order to enable cast.ToStringMap
-func stringToStringConv(val string) interface{} {
+// alterations are: errors are swallowed, map[string]any is returned in order to enable cast.ToStringMap
+func stringToStringConv(val string) any {
 	val = strings.Trim(val, "[]")
 	// An empty string would cause an empty map
 	if len(val) == 0 {
-		return map[string]interface{}{}
+		return map[string]any{}
 	}
 	r := csv.NewReader(strings.NewReader(val))
 	ss, err := r.Read()
 	if err != nil {
 		return nil
 	}
-	out := make(map[string]interface{}, len(ss))
+	out := make(map[string]any, len(ss))
 	for _, pair := range ss {
 		kv := strings.SplitN(pair, "=", 2)
 		if len(kv) != 2 {
@@ -1429,15 +1429,15 @@ func stringToStringConv(val string) interface{} {
 }
 
 // mostly copied from pflag's implementation of this operation here https://github.com/spf13/pflag/blob/d5e0c0615acee7028e1e2740a11102313be88de1/string_to_int.go#L68
-// alterations are: errors are swallowed, map[string]interface{} is returned in order to enable cast.ToStringMap
-func stringToIntConv(val string) interface{} {
+// alterations are: errors are swallowed, map[string]any is returned in order to enable cast.ToStringMap
+func stringToIntConv(val string) any {
 	val = strings.Trim(val, "[]")
 	// An empty string would cause an empty map
 	if len(val) == 0 {
-		return map[string]interface{}{}
+		return map[string]any{}
 	}
 	ss := strings.Split(val, ",")
-	out := make(map[string]interface{}, len(ss))
+	out := make(map[string]any, len(ss))
 	for _, pair := range ss {
 		kv := strings.SplitN(pair, "=", 2)
 		if len(kv) != 2 {
@@ -1545,9 +1545,9 @@ func (v *Viper) InConfig(key string) bool {
 // SetDefault sets the default value for this key.
 // SetDefault is case-insensitive for a key.
 // Default only used when no value is provided by the user via flag, config or ENV.
-func SetDefault(key string, value interface{}) { v.SetDefault(key, value) }
+func SetDefault(key string, value any) { v.SetDefault(key, value) }
 
-func (v *Viper) SetDefault(key string, value interface{}) {
+func (v *Viper) SetDefault(key string, value any) {
 	// If alias passed in, then set the proper default
 	key = v.realKey(strings.ToLower(key))
 	value = toCaseInsensitiveValue(value)
@@ -1564,9 +1564,9 @@ func (v *Viper) SetDefault(key string, value interface{}) {
 // Set is case-insensitive for a key.
 // Will be used instead of values obtained via
 // flags, config file, ENV, default, or key/value store.
-func Set(key string, value interface{}) { v.Set(key, value) }
+func Set(key string, value any) { v.Set(key, value) }
 
-func (v *Viper) Set(key string, value interface{}) {
+func (v *Viper) Set(key string, value any) {
 	// If alias passed in, then set the proper override
 	key = v.realKey(strings.ToLower(key))
 	value = toCaseInsensitiveValue(value)
@@ -1600,7 +1600,7 @@ func (v *Viper) ReadInConfig() error {
 		return err
 	}
 
-	config := make(map[string]interface{})
+	config := make(map[string]any)
 
 	err = v.unmarshalReader(bytes.NewReader(file), config)
 	if err != nil {
@@ -1638,7 +1638,7 @@ func (v *Viper) MergeInConfig() error {
 func ReadConfig(in io.Reader) error { return v.ReadConfig(in) }
 
 func (v *Viper) ReadConfig(in io.Reader) error {
-	v.config = make(map[string]interface{})
+	v.config = make(map[string]any)
 	return v.unmarshalReader(in, v.config)
 }
 
@@ -1646,7 +1646,7 @@ func (v *Viper) ReadConfig(in io.Reader) error {
 func MergeConfig(in io.Reader) error { return v.MergeConfig(in) }
 
 func (v *Viper) MergeConfig(in io.Reader) error {
-	cfg := make(map[string]interface{})
+	cfg := make(map[string]any)
 	if err := v.unmarshalReader(in, cfg); err != nil {
 		return err
 	}
@@ -1655,11 +1655,11 @@ func (v *Viper) MergeConfig(in io.Reader) error {
 
 // MergeConfigMap merges the configuration from the map given with an existing config.
 // Note that the map given may be modified.
-func MergeConfigMap(cfg map[string]interface{}) error { return v.MergeConfigMap(cfg) }
+func MergeConfigMap(cfg map[string]any) error { return v.MergeConfigMap(cfg) }
 
-func (v *Viper) MergeConfigMap(cfg map[string]interface{}) error {
+func (v *Viper) MergeConfigMap(cfg map[string]any) error {
 	if v.config == nil {
-		v.config = make(map[string]interface{})
+		v.config = make(map[string]any)
 	}
 	insensitiviseMap(cfg)
 	mergeMaps(cfg, v.config, nil)
@@ -1724,7 +1724,7 @@ func (v *Viper) writeConfig(filename string, force bool) error {
 		return UnsupportedConfigError(configType)
 	}
 	if v.config == nil {
-		v.config = make(map[string]interface{})
+		v.config = make(map[string]any)
 	}
 	flags := os.O_CREATE | os.O_TRUNC | os.O_WRONLY
 	if !force {
@@ -1745,11 +1745,11 @@ func (v *Viper) writeConfig(filename string, force bool) error {
 
 // Unmarshal a Reader into a map.
 // Should probably be an unexported function.
-func unmarshalReader(in io.Reader, c map[string]interface{}) error {
+func unmarshalReader(in io.Reader, c map[string]any) error {
 	return v.unmarshalReader(in, c)
 }
 
-func (v *Viper) unmarshalReader(in io.Reader, c map[string]interface{}) error {
+func (v *Viper) unmarshalReader(in io.Reader, c map[string]any) error {
 	buf := new(bytes.Buffer)
 	buf.ReadFrom(in)
 
@@ -1783,7 +1783,7 @@ func (v *Viper) marshalWriter(f afero.File, configType string) error {
 	return nil
 }
 
-func keyExists(k string, m map[string]interface{}) string {
+func keyExists(k string, m map[string]any) string {
 	lk := strings.ToLower(k)
 	for mk := range m {
 		lmk := strings.ToLower(mk)
@@ -1795,33 +1795,33 @@ func keyExists(k string, m map[string]interface{}) string {
 }
 
 func castToMapStringInterface(
-	src map[interface{}]interface{},
-) map[string]interface{} {
-	tgt := map[string]interface{}{}
+	src map[any]any,
+) map[string]any {
+	tgt := map[string]any{}
 	for k, v := range src {
 		tgt[fmt.Sprintf("%v", k)] = v
 	}
 	return tgt
 }
 
-func castMapStringSliceToMapInterface(src map[string][]string) map[string]interface{} {
-	tgt := map[string]interface{}{}
+func castMapStringSliceToMapInterface(src map[string][]string) map[string]any {
+	tgt := map[string]any{}
 	for k, v := range src {
 		tgt[k] = v
 	}
 	return tgt
 }
 
-func castMapStringToMapInterface(src map[string]string) map[string]interface{} {
-	tgt := map[string]interface{}{}
+func castMapStringToMapInterface(src map[string]string) map[string]any {
+	tgt := map[string]any{}
 	for k, v := range src {
 		tgt[k] = v
 	}
 	return tgt
 }
 
-func castMapFlagToMapInterface(src map[string]FlagValue) map[string]interface{} {
-	tgt := map[string]interface{}{}
+func castMapFlagToMapInterface(src map[string]FlagValue) map[string]any {
+	tgt := map[string]any{}
 	for k, v := range src {
 		tgt[k] = v
 	}
@@ -1829,13 +1829,11 @@ func castMapFlagToMapInterface(src map[string]FlagValue) map[string]interface{}
 }
 
 // mergeMaps merges two maps. The `itgt` parameter is for handling go-yaml's
-// insistence on parsing nested structures as `map[interface{}]interface{}`
+// insistence on parsing nested structures as `map[any]any`
 // instead of using a `string` as the key for nest structures beyond one level
 // deep. Both map types are supported as there is a go-yaml fork that uses
-// `map[string]interface{}` instead.
-func mergeMaps(
-	src, tgt map[string]interface{}, itgt map[interface{}]interface{},
-) {
+// `map[string]any` instead.
+func mergeMaps(src, tgt map[string]any, itgt map[any]any) {
 	for sk, sv := range src {
 		tk := keyExists(sk, tgt)
 		if tk == "" {
@@ -1870,12 +1868,12 @@ func mergeMaps(
 		)
 
 		switch ttv := tv.(type) {
-		case map[interface{}]interface{}:
+		case map[any]any:
 			v.logger.Debug("merging maps (must convert)")
-			tsv, ok := sv.(map[interface{}]interface{})
+			tsv, ok := sv.(map[any]any)
 			if !ok {
 				v.logger.Error(
-					"Could not cast sv to map[interface{}]interface{}",
+					"Could not cast sv to map[any]any",
 					"key", sk,
 					"st", svType,
 					"tt", tvType,
@@ -1888,12 +1886,12 @@ func mergeMaps(
 			ssv := castToMapStringInterface(tsv)
 			stv := castToMapStringInterface(ttv)
 			mergeMaps(ssv, stv, ttv)
-		case map[string]interface{}:
+		case map[string]any:
 			v.logger.Debug("merging maps")
-			tsv, ok := sv.(map[string]interface{})
+			tsv, ok := sv.(map[string]any)
 			if !ok {
 				v.logger.Error(
-					"Could not cast sv to map[string]interface{}",
+					"Could not cast sv to map[string]any",
 					"key", sk,
 					"st", svType,
 					"tt", tvType,
@@ -1955,7 +1953,7 @@ func (v *Viper) getKeyValueConfig() error {
 	return RemoteConfigError("No Files Found")
 }
 
-func (v *Viper) getRemoteConfig(provider RemoteProvider) (map[string]interface{}, error) {
+func (v *Viper) getRemoteConfig(provider RemoteProvider) (map[string]any, error) {
 	reader, err := RemoteConfig.Get(provider)
 	if err != nil {
 		return nil, err
@@ -2004,7 +2002,7 @@ func (v *Viper) watchKeyValueConfig() error {
 	return RemoteConfigError("No Files Found")
 }
 
-func (v *Viper) watchRemoteConfig(provider RemoteProvider) (map[string]interface{}, error) {
+func (v *Viper) watchRemoteConfig(provider RemoteProvider) (map[string]any, error) {
 	reader, err := RemoteConfig.Watch(provider)
 	if err != nil {
 		return nil, err
@@ -2043,7 +2041,7 @@ func (v *Viper) AllKeys() []string {
 //     it is skipped.
 //
 // The resulting set of paths is merged to the given shadow set at the same time.
-func (v *Viper) flattenAndMergeMap(shadow map[string]bool, m map[string]interface{}, prefix string) map[string]bool {
+func (v *Viper) flattenAndMergeMap(shadow map[string]bool, m map[string]any, prefix string) map[string]bool {
 	if shadow != nil && prefix != "" && shadow[prefix] {
 		// prefix is shadowed => nothing more to flatten
 		return shadow
@@ -2052,16 +2050,16 @@ func (v *Viper) flattenAndMergeMap(shadow map[string]bool, m map[string]interfac
 		shadow = make(map[string]bool)
 	}
 
-	var m2 map[string]interface{}
+	var m2 map[string]any
 	if prefix != "" {
 		prefix += v.keyDelim
 	}
 	for k, val := range m {
 		fullKey := prefix + k
 		switch val := val.(type) {
-		case map[string]interface{}:
+		case map[string]any:
 			m2 = val
-		case map[interface{}]interface{}:
+		case map[any]any:
 			m2 = cast.ToStringMap(val)
 		default:
 			// immediate value
@@ -2076,7 +2074,7 @@ func (v *Viper) flattenAndMergeMap(shadow map[string]bool, m map[string]interfac
 
 // mergeFlatMap merges the given maps, excluding values of the second map
 // shadowed by values from the first map.
-func (v *Viper) mergeFlatMap(shadow map[string]bool, m map[string]interface{}) map[string]bool {
+func (v *Viper) mergeFlatMap(shadow map[string]bool, m map[string]any) map[string]bool {
 	// scan keys
 outer:
 	for k := range m {
@@ -2096,11 +2094,11 @@ outer:
 	return shadow
 }
 
-// AllSettings merges all settings and returns them as a map[string]interface{}.
-func AllSettings() map[string]interface{} { return v.AllSettings() }
+// AllSettings merges all settings and returns them as a map[string]any.
+func AllSettings() map[string]any { return v.AllSettings() }
 
-func (v *Viper) AllSettings() map[string]interface{} {
-	m := map[string]interface{}{}
+func (v *Viper) AllSettings() map[string]any {
+	m := map[string]any{}
 	// start from the list of keys, and construct the map one value at a time
 	for _, k := range v.AllKeys() {
 		value := v.Get(k)

viper_test.go

@@ -496,8 +496,8 @@ func TestUnmarshaling(t *testing.T) {
 	assert.False(t, InConfig("state"))
 	assert.False(t, InConfig("clothing.hat"))
 	assert.Equal(t, "steve", Get("name"))
-	assert.Equal(t, []interface{}{"skateboarding", "snowboarding", "go"}, Get("hobbies"))
-	assert.Equal(t, map[string]interface{}{"jacket": "leather", "trousers": "denim", "pants": map[string]interface{}{"size": "large"}}, Get("clothing"))
+	assert.Equal(t, []any{"skateboarding", "snowboarding", "go"}, Get("hobbies"))
+	assert.Equal(t, map[string]any{"jacket": "leather", "trousers": "denim", "pants": map[string]any{"size": "large"}}, Get("clothing"))
 	assert.Equal(t, 35, Get("age"))
 }
 
@@ -774,14 +774,14 @@ func TestAllKeys(t *testing.T) {
 		"name_dotenv",
 	}
 	dob, _ := time.Parse(time.RFC3339, "1979-05-27T07:32:00Z")
-	all := map[string]interface{}{
-		"owner": map[string]interface{}{
+	all := map[string]any{
+		"owner": map[string]any{
 			"organization": "MongoDB",
 			"bio":          "MongoDB Chief Developer Advocate & Hacker at Large",
 			"dob":          dob,
 		},
 		"title": "TOML Example",
-		"author": map[string]interface{}{
+		"author": map[string]any{
 			"e-mail": "fake@localhost",
 			"github": "https://github.com/Unknown",
 			"name":   "Unknown",
@@ -789,28 +789,28 @@ func TestAllKeys(t *testing.T) {
 		},
 		"ppu":  0.55,
 		"eyes": "brown",
-		"clothing": map[string]interface{}{
+		"clothing": map[string]any{
 			"trousers": "denim",
 			"jacket":   "leather",
-			"pants":    map[string]interface{}{"size": "large"},
+			"pants":    map[string]any{"size": "large"},
 		},
-		"default": map[string]interface{}{
+		"default": map[string]any{
 			"import_path": "gopkg.in/ini.v1",
 			"name":        "ini",
 			"version":     "v1",
 		},
 		"id": "0001",
-		"batters": map[string]interface{}{
-			"batter": []interface{}{
-				map[string]interface{}{"type": "Regular"},
-				map[string]interface{}{"type": "Chocolate"},
-				map[string]interface{}{"type": "Blueberry"},
-				map[string]interface{}{"type": "Devil's Food"},
+		"batters": map[string]any{
+			"batter": []any{
+				map[string]any{"type": "Regular"},
+				map[string]any{"type": "Chocolate"},
+				map[string]any{"type": "Blueberry"},
+				map[string]any{"type": "Devil's Food"},
 			},
 		},
 		"hacker": true,
 		"beard":  true,
-		"hobbies": []interface{}{
+		"hobbies": []any{
 			"skateboarding",
 			"snowboarding",
 			"go",
@@ -822,13 +822,13 @@ func TestAllKeys(t *testing.T) {
 		"p_id":   "0001",
 		"p_ppu":  "0.55",
 		"p_name": "Cake",
-		"p_batters": map[string]interface{}{
-			"batter": map[string]interface{}{"type": "Regular"},
+		"p_batters": map[string]any{
+			"batter": map[string]any{"type": "Regular"},
 		},
 		"p_type": "donut",
-		"foos": []map[string]interface{}{
+		"foos": []map[string]any{
 			{
-				"foo": []map[string]interface{}{
+				"foo": []map[string]any{
 					{"key": 1},
 					{"key": 2},
 					{"key": 3},
@@ -937,7 +937,7 @@ func TestUnmarshalWithDecoderOptions(t *testing.T) {
 		mapstructure.StringToTimeDurationHookFunc(),
 		mapstructure.StringToSliceHookFunc(","),
 		// Custom Decode Hook Function
-		func(rf reflect.Kind, rt reflect.Kind, data interface{}) (interface{}, error) {
+		func(rf reflect.Kind, rt reflect.Kind, data any) (any, error) {
 			if rf != reflect.String || rt != reflect.Map {
 				return data, nil
 			}
@@ -1328,38 +1328,38 @@ func TestFindsNestedKeys(t *testing.T) {
 	initConfigs()
 	dob, _ := time.Parse(time.RFC3339, "1979-05-27T07:32:00Z")
 
-	Set("super", map[string]interface{}{
-		"deep": map[string]interface{}{
+	Set("super", map[string]any{
+		"deep": map[string]any{
 			"nested": "value",
 		},
 	})
 
-	expected := map[string]interface{}{
-		"super": map[string]interface{}{
-			"deep": map[string]interface{}{
+	expected := map[string]any{
+		"super": map[string]any{
+			"deep": map[string]any{
 				"nested": "value",
 			},
 		},
-		"super.deep": map[string]interface{}{
+		"super.deep": map[string]any{
 			"nested": "value",
 		},
 		"super.deep.nested":  "value",
 		"owner.organization": "MongoDB",
-		"batters.batter": []interface{}{
-			map[string]interface{}{
+		"batters.batter": []any{
+			map[string]any{
 				"type": "Regular",
 			},
-			map[string]interface{}{
+			map[string]any{
 				"type": "Chocolate",
 			},
-			map[string]interface{}{
+			map[string]any{
 				"type": "Blueberry",
 			},
-			map[string]interface{}{
+			map[string]any{
 				"type": "Devil's Food",
 			},
 		},
-		"hobbies": []interface{}{
+		"hobbies": []any{
 			"skateboarding", "snowboarding", "go",
 		},
 		"TITLE_DOTENV": "DotEnv Example",
@@ -1367,25 +1367,25 @@ func TestFindsNestedKeys(t *testing.T) {
 		"NAME_DOTENV":  "Cake",
 		"title":        "TOML Example",
 		"newkey":       "remote",
-		"batters": map[string]interface{}{
-			"batter": []interface{}{
-				map[string]interface{}{
+		"batters": map[string]any{
+			"batter": []any{
+				map[string]any{
 					"type": "Regular",
 				},
-				map[string]interface{}{
+				map[string]any{
 					"type": "Chocolate",
 				},
-				map[string]interface{}{
+				map[string]any{
 					"type": "Blueberry",
 				},
-				map[string]interface{}{
+				map[string]any{
 					"type": "Devil's Food",
 				},
 			},
 		},
 		"eyes": "brown",
 		"age":  35,
-		"owner": map[string]interface{}{
+		"owner": map[string]any{
 			"organization": "MongoDB",
 			"bio":          "MongoDB Chief Developer Advocate & Hacker at Large",
 			"dob":          dob,
@@ -1396,10 +1396,10 @@ func TestFindsNestedKeys(t *testing.T) {
 		"name":      "Cake",
 		"hacker":    true,
 		"ppu":       0.55,
-		"clothing": map[string]interface{}{
+		"clothing": map[string]any{
 			"jacket":   "leather",
 			"trousers": "denim",
-			"pants": map[string]interface{}{
+			"pants": map[string]any{
 				"size": "large",
 			},
 		},
@@ -1408,9 +1408,9 @@ func TestFindsNestedKeys(t *testing.T) {
 		"clothing.trousers":   "denim",
 		"owner.dob":           dob,
 		"beard":               true,
-		"foos": []map[string]interface{}{
+		"foos": []map[string]any{
 			{
-				"foo": []map[string]interface{}{
+				"foo": []map[string]any{
 					{
 						"key": 1,
 					},
@@ -1444,8 +1444,8 @@ func TestReadBufConfig(t *testing.T) {
 	assert.False(t, v.InConfig("state"))
 	assert.False(t, v.InConfig("clothing.hat"))
 	assert.Equal(t, "steve", v.Get("name"))
-	assert.Equal(t, []interface{}{"skateboarding", "snowboarding", "go"}, v.Get("hobbies"))
-	assert.Equal(t, map[string]interface{}{"jacket": "leather", "trousers": "denim", "pants": map[string]interface{}{"size": "large"}}, v.Get("clothing"))
+	assert.Equal(t, []any{"skateboarding", "snowboarding", "go"}, v.Get("hobbies"))
+	assert.Equal(t, map[string]any{"jacket": "leather", "trousers": "denim", "pants": map[string]any{"size": "large"}}, v.Get("clothing"))
 	assert.Equal(t, 35, v.Get("age"))
 }
 
@@ -2180,11 +2180,11 @@ func TestMergeConfigMap(t *testing.T) {
 
 	assert(37890)
 
-	update := map[string]interface{}{
-		"Hello": map[string]interface{}{
+	update := map[string]any{
+		"Hello": map[string]any{
 			"Pop": 1234,
 		},
-		"World": map[interface{}]interface{}{
+		"World": map[any]any{
 			"Rock": 345,
 		},
 	}
@@ -2255,7 +2255,7 @@ clothing:
 	assert.Nil(t, Get("clothing.jacket.price"))
 	assert.Equal(t, polyester, GetString("clothing.shirt"))
 
-	clothingSettings := AllSettings()["clothing"].(map[string]interface{})
+	clothingSettings := AllSettings()["clothing"].(map[string]any)
 	assert.Equal(t, "leather", clothingSettings["jacket"])
 	assert.Equal(t, polyester, clothingSettings["shirt"])
 }
@@ -2267,7 +2267,7 @@ func TestDotParameter(t *testing.T) {
 	unmarshalReader(r, v.config)
 
 	actual := Get("batters.batter")
-	expected := []interface{}{map[string]interface{}{"type": "Small"}}
+	expected := []any{map[string]any{"type": "Small"}}
 	assert.Equal(t, expected, actual)
 }
 
@@ -2318,17 +2318,17 @@ R = 6
 
 func TestCaseInsensitiveSet(t *testing.T) {
 	Reset()
-	m1 := map[string]interface{}{
+	m1 := map[string]any{
 		"Foo": 32,
-		"Bar": map[interface{}]interface{}{
+		"Bar": map[any]any{
 			"ABc": "A",
 			"cDE": "B",
 		},
 	}
 
-	m2 := map[string]interface{}{
+	m2 := map[string]any{
 		"Foo": 52,
-		"Bar": map[interface{}]interface{}{
+		"Bar": map[any]any{
 			"bCd": "A",
 			"eFG": "B",
 		},
@@ -2559,13 +2559,13 @@ func TestKeyDelimiter(t *testing.T) {
 	err := v.unmarshalReader(r, v.config)
 	require.NoError(t, err)
 
-	values := map[string]interface{}{
-		"image": map[string]interface{}{
+	values := map[string]any{
+		"image": map[string]any{
 			"repository": "someImage",
 			"tag":        "1.0.0",
 		},
-		"ingress": map[string]interface{}{
-			"annotations": map[string]interface{}{
+		"ingress": map[string]any{
+			"annotations": map[string]any{
 				"traefik.frontend.rule.type":                 "PathPrefix",
 				"traefik.ingress.kubernetes.io/ssl-redirect": "true",
 			},
@@ -2579,13 +2579,13 @@ func TestKeyDelimiter(t *testing.T) {
 
 	type config struct {
 		Charts struct {
-			Values map[string]interface{}
+			Values map[string]any
 		}
 	}
 
 	expected := config{
 		Charts: struct {
-			Values map[string]interface{}
+			Values map[string]any
 		}{
 			Values: values,
 		},