diff --git a/.travis.yml b/.travis.yml
index 05d8546..6b5a1c7 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,6 +3,7 @@ language: php
 php:
   - 7.0
   - 7.1
+  - 7.2
 
 before_script:
   - composer self-update
diff --git a/src/Foundation/helpers.php b/src/Foundation/helpers.php
index 04a61a1..d20b0a2 100644
--- a/src/Foundation/helpers.php
+++ b/src/Foundation/helpers.php
@@ -1,11 +1,10 @@
 <?php
 
 use Yish\Generators\Exceptions\ClassNotFoundException;
-use Yish\Generators\Exceptions\MethodNotFoundException;
 use Illuminate\Http\Request;
 
-if (! function_exists('transform')) {
-    function transform($instance, $attributes)
+if (! function_exists('transformer')) {
+    function transformer($instance, $attributes)
     {
         if (! class_exists($instance)) {
             throw new ClassNotFoundException($instance);
@@ -15,8 +14,8 @@ function transform($instance, $attributes)
     }
 }
 
-if (! function_exists('format')) {
-    function format(Request $request, $instance, $items)
+if (! function_exists('formatter')) {
+    function formatter(Request $request, $instance, $items)
     {
         if (! class_exists($instance)) {
             throw new ClassNotFoundException($instance);
diff --git a/tests/FormatterTest.php b/tests/FormatterTest.php
index 5696fb1..f428cb7 100644
--- a/tests/FormatterTest.php
+++ b/tests/FormatterTest.php
@@ -297,7 +297,7 @@ public function it_should_format_and_success()
             ],
         ];
 
-        $result = format(request(), InstanceSuccess::class, [
+        $result = formatter(request(), InstanceSuccess::class, [
             1,
             2,
             3,
@@ -323,7 +323,7 @@ public function it_should_format_and_failed()
             'errors' => null,
         ];
 
-        $result = format(request(), InstanceFailed::class, null);
+        $result = formatter(request(), InstanceFailed::class, null);
 
         $this->assertEquals($expected, $result);
     }
@@ -344,7 +344,7 @@ public function it_should_format_and_customize_message_success_by_helper()
             'items' => [],
         ];
 
-        $result = format(request(), CustomSuccessMessage::class, []);
+        $result = formatter(request(), CustomSuccessMessage::class, []);
 
         $this->assertEquals($expected, $result);
     }
@@ -363,7 +363,7 @@ public function it_should_format_and_customize_code_success_by_helper()
             'items' => [],
         ];
 
-        $result = format(request(), CustomSuccessCode::class, []);
+        $result = formatter(request(), CustomSuccessCode::class, []);
 
         $this->assertEquals($expected, $result);
     }
@@ -384,7 +384,7 @@ public function it_should_format_and_customize_all_success_by_helper()
             'items' => [],
         ];
 
-        $result = format(request(), CustomSuccessAll::class, []);
+        $result = formatter(request(), CustomSuccessAll::class, []);
 
         $this->assertEquals($expected, $result);
     }
@@ -405,7 +405,7 @@ public function it_should_format_and_customize_message_failed_by_helper()
             'errors' => [],
         ];
 
-        $result = format(request(), CustomFailedMessage::class, []);
+        $result = formatter(request(), CustomFailedMessage::class, []);
 
         $this->assertEquals($expected, $result);
     }
@@ -424,7 +424,7 @@ public function it_should_format_and_customize_code_failed_by_helper()
             'errors' => [],
         ];
 
-        $result = format(request(), CustomFailedCode::class, []);
+        $result = formatter(request(), CustomFailedCode::class, []);
 
         $this->assertEquals($expected, $result);
     }
@@ -445,7 +445,7 @@ public function it_should_format_and_customize_all_failed_by_helper()
             'errors' => [],
         ];
 
-        $result = format(request(), CustomFailedAll::class, []);
+        $result = formatter(request(), CustomFailedAll::class, []);
 
         $this->assertEquals($expected, $result);
     }
@@ -458,7 +458,7 @@ public function it_should_format_not_found_class_by_helper()
     {
         $this->expectException(\Yish\Generators\Exceptions\ClassNotFoundException::class);
 
-        format(request(), ABCD::class, []);
+        formatter(request(), ABCD::class, []);
     }
 
     /**
@@ -469,7 +469,7 @@ public function if_status_not_bool_got_exception()
     {
         $this->expectException(\Yish\Generators\Exceptions\InvalidArgumentException::class);
 
-        format(request(), ErrorStatus::class, []);
+        formatter(request(), ErrorStatus::class, []);
     }
 
     /**
@@ -490,7 +490,7 @@ public function if_status_no_given_will_be_false()
             'errors' => [],
         ];
 
-        $result = format(request(), NoGivenStatus::class, []);
+        $result = formatter(request(), NoGivenStatus::class, []);
 
         $this->assertEquals($expected, $result);
     }
diff --git a/tests/TransformerTest.php b/tests/TransformerTest.php
index 9b2d45e..fec0cbf 100644
--- a/tests/TransformerTest.php
+++ b/tests/TransformerTest.php
@@ -30,7 +30,7 @@ public function it_should_transform_by_helper()
     {
         $expected = ['name' => 'yish'];
 
-        $result = transform(UserTransformer::class, [
+        $result = transformer(UserTransformer::class, [
             'name' => 'yish',
             'age' => 28
         ]);
@@ -46,6 +46,6 @@ public function it_should_not_found_class_by_helper()
     {
         $this->expectException(\Yish\Generators\Exceptions\ClassNotFoundException::class);
 
-        transform(ABCD::class, []);
+        transformer(ABCD::class, []);
     }
 }
\ No newline at end of file