return back "strcase" functions for InterfaceName

add deprecation comment

go.mod

@@ -6,6 +6,7 @@ require (
 	github.com/chigopher/pathlib v0.15.0
 	github.com/davecgh/go-spew v1.1.1
 	github.com/huandu/xstrings v1.4.0
+	github.com/iancoleman/strcase v0.2.0
 	github.com/jinzhu/copier v0.3.5
 	github.com/mitchellh/go-homedir v1.1.0
 	github.com/mitchellh/mapstructure v1.5.0

go.sum

@@ -130,6 +130,8 @@ github.com/hashicorp/hcl v1.0.0 h1:0Anlzjpi4vEasTeNFn2mLJgTSwt0+6sfsiTG8qcWGx4=
 github.com/hashicorp/hcl v1.0.0/go.mod h1:E5yfLk+7swimpb2L/Alb/PJmXilQ/rhwaUYs4T20WEQ=
 github.com/huandu/xstrings v1.4.0 h1:D17IlohoQq4UcpqD7fDk80P7l+lwAmlFaBHgOipl2FU=
 github.com/huandu/xstrings v1.4.0/go.mod h1:y5/lhBue+AyNmUVz9RLU9xbLR0o4KIIExikq4ovT0aE=
+github.com/iancoleman/strcase v0.2.0 h1:05I4QRnGpI0m37iZQRuskXh+w77mr6Z41lwQzuHLwW0=
+github.com/iancoleman/strcase v0.2.0/go.mod h1:iwCmte+B7n89clKwxIoIXy/HfoL7AsD47ZCWhYzw7ho=
 github.com/ianlancetaylor/demangle v0.0.0-20181102032728-5e5cf60278f6/go.mod h1:aSSvb/t6k1mPoxDqO4vJh6VOCGPwU4O0C2/Eqndh1Sc=
 github.com/ianlancetaylor/demangle v0.0.0-20200824232613-28f6c0f3b639/go.mod h1:aSSvb/t6k1mPoxDqO4vJh6VOCGPwU4O0C2/Eqndh1Sc=
 github.com/inconshreveable/mousetrap v1.0.1/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw=

go.work.sum

@@ -443,7 +443,7 @@ github.com/hashicorp/memberlist v0.5.0 h1:EtYPN8DpAURiapus508I4n9CzHs2W+8NZGbmmR
 github.com/hashicorp/memberlist v0.5.0/go.mod h1:yvyXLpo0QaGE59Y7hDTsTzDD25JYBZ4mHgHUZ8lrOI0=
 github.com/hashicorp/serf v0.10.1 h1:Z1H2J60yRKvfDYAOZLd2MU0ND4AH/WDz7xYHDWQsIPY=
 github.com/hashicorp/serf v0.10.1/go.mod h1:yL2t6BqATOLGc5HF7qbFkTfXoPIY0WZdWHfEvMqbG+4=
-github.com/huandu/xstrings v1.4.0/go.mod h1:y5/lhBue+AyNmUVz9RLU9xbLR0o4KIIExikq4ovT0aE=
+github.com/iancoleman/strcase v0.2.0/go.mod h1:iwCmte+B7n89clKwxIoIXy/HfoL7AsD47ZCWhYzw7ho=
 github.com/ianlancetaylor/demangle v0.0.0-20200824232613-28f6c0f3b639 h1:mV02weKRL81bEnm8A0HT1/CAelMQDBuQIfLw8n+d6xI=
 github.com/jmoiron/sqlx v1.3.5 h1:vFFPA71p1o5gAeqtEAwLU4dnX2napprKtHr7PYIcN3g=
 github.com/jmoiron/sqlx v1.3.5/go.mod h1:nRVWtLre0KfCLJvgxzCsLVMogSvQ1zNJtpYr2Ccp0mQ=

pkg/outputter.go

@@ -15,6 +15,7 @@ import (
 
 	"github.com/chigopher/pathlib"
 	"github.com/huandu/xstrings"
+	"github.com/iancoleman/strcase"
 	"github.com/rs/zerolog"
 
 	"github.com/vektra/mockery/v2/pkg/config"
@@ -219,12 +220,14 @@ func parseConfigTemplates(ctx context.Context, c *config.Config, iface *Interfac
 		PackageName             string
 		PackagePath             string
 	}{
-		InterfaceDir:            filepath.Dir(iface.FileName),
-		InterfaceDirRelative:    interfaceDirRelative,
-		InterfaceName:           iface.Name,
-		InterfaceNameCamel:      xstrings.ToCamelCase(iface.Name),
-		InterfaceNameLowerCamel: xstrings.FirstRuneToLower(xstrings.ToCamelCase(iface.Name)),
-		InterfaceNameSnake:      xstrings.ToSnakeCase(iface.Name),
+		InterfaceDir:         filepath.Dir(iface.FileName),
+		InterfaceDirRelative: interfaceDirRelative,
+		InterfaceName:        iface.Name,
+		// Deprecated: All custom case variables of InterfaceName will be removed in the next major version
+		// Use the template functions instead
+		InterfaceNameCamel:      strcase.ToCamel(iface.Name),
+		InterfaceNameLowerCamel: strcase.ToLowerCamel(iface.Name),
+		InterfaceNameSnake:      strcase.ToSnake(iface.Name),
 		InterfaceNameLower:      strings.ToLower(iface.Name),
 		Mock:                    mock,
 		MockName:                c.MockName,