diff --git a/src/Executor/ExecutionResult.php b/src/Executor/ExecutionResult.php
index c9ec782..d998b96 100644
--- a/src/Executor/ExecutionResult.php
+++ b/src/Executor/ExecutionResult.php
@@ -1,7 +1,6 @@
 <?php
 namespace GraphQL\Executor;
 
-use GraphQL\Error\Error;
 use GraphQL\Error\FormattedError;
 
 /**
@@ -32,7 +31,7 @@ class ExecutionResult implements \JsonSerializable
      * @var \GraphQL\Error\Error[]
      */
     public $errors;
-    
+
     /**
      * User-defined serializable array of extensions included in serialized result.
      * Conforms to
@@ -138,7 +137,7 @@ class ExecutionResult implements \JsonSerializable
         if (null !== $this->data) {
             $result['data'] = $this->data;
         }
-        
+
         if (!empty($this->extensions)) {
             $result['extensions'] = (array) $this->extensions;
         }
diff --git a/src/Executor/Values.php b/src/Executor/Values.php
index c8353c4..372d63f 100644
--- a/src/Executor/Values.php
+++ b/src/Executor/Values.php
@@ -13,21 +13,16 @@ use GraphQL\Language\AST\NodeList;
 use GraphQL\Language\AST\VariableNode;
 use GraphQL\Language\AST\VariableDefinitionNode;
 use GraphQL\Language\Printer;
-use GraphQL\Type\Definition\EnumType;
-use GraphQL\Type\Definition\ScalarType;
 use GraphQL\Type\Schema;
 use GraphQL\Type\Definition\Directive;
 use GraphQL\Type\Definition\FieldDefinition;
-use GraphQL\Type\Definition\InputObjectType;
 use GraphQL\Type\Definition\InputType;
-use GraphQL\Type\Definition\ListOfType;
 use GraphQL\Type\Definition\NonNull;
 use GraphQL\Type\Definition\Type;
 use GraphQL\Utils\AST;
 use GraphQL\Utils\TypeInfo;
 use GraphQL\Utils\Utils;
 use GraphQL\Utils\Value;
-use GraphQL\Validator\DocumentValidator;
 
 class Values
 {
diff --git a/src/Language/AST/Node.php b/src/Language/AST/Node.php
index 6b42fe2..e12deec 100644
--- a/src/Language/AST/Node.php
+++ b/src/Language/AST/Node.php
@@ -1,7 +1,6 @@
 <?php
 namespace GraphQL\Language\AST;
 
-use GraphQL\Error\InvariantViolation;
 use GraphQL\Utils\Utils;
 
 abstract class Node
diff --git a/src/Type/Definition/CustomScalarType.php b/src/Type/Definition/CustomScalarType.php
index d801644..5c25c8b 100644
--- a/src/Type/Definition/CustomScalarType.php
+++ b/src/Type/Definition/CustomScalarType.php
@@ -1,7 +1,6 @@
 <?php
 namespace GraphQL\Type\Definition;
 
-use GraphQL\Error\Error;
 use GraphQL\Language\AST\Node;
 use GraphQL\Utils\AST;
 use GraphQL\Utils\Utils;
diff --git a/src/Type/Definition/Type.php b/src/Type/Definition/Type.php
index 5dd6b93..cf7ef2f 100644
--- a/src/Type/Definition/Type.php
+++ b/src/Type/Definition/Type.php
@@ -2,9 +2,6 @@
 namespace GraphQL\Type\Definition;
 
 use GraphQL\Error\InvariantViolation;
-use GraphQL\Language\AST\ListType;
-use GraphQL\Language\AST\NamedType;
-use GraphQL\Language\AST\NonNullType;
 use GraphQL\Language\AST\TypeDefinitionNode;
 use GraphQL\Type\Introspection;
 use GraphQL\Utils\Utils;
diff --git a/src/Type/EagerResolution.php b/src/Type/EagerResolution.php
index 262903c..d814868 100644
--- a/src/Type/EagerResolution.php
+++ b/src/Type/EagerResolution.php
@@ -2,13 +2,10 @@
 namespace GraphQL\Type;
 
 use GraphQL\Type\Definition\AbstractType;
-use GraphQL\Type\Definition\FieldArgument;
-use GraphQL\Type\Definition\InputObjectType;
 use GraphQL\Type\Definition\InterfaceType;
 use GraphQL\Type\Definition\ObjectType;
 use GraphQL\Type\Definition\Type;
 use GraphQL\Type\Definition\UnionType;
-use GraphQL\Type\Definition\WrappingType;
 use GraphQL\Utils\TypeInfo;
 use GraphQL\Utils\Utils;
 
diff --git a/src/Utils/AST.php b/src/Utils/AST.php
index 7462cd8..7535239 100644
--- a/src/Utils/AST.php
+++ b/src/Utils/AST.php
@@ -28,7 +28,6 @@ use GraphQL\Type\Definition\EnumType;
 use GraphQL\Type\Definition\IDType;
 use GraphQL\Type\Definition\InputObjectType;
 use GraphQL\Type\Definition\InputType;
-use GraphQL\Type\Definition\LeafType;
 use GraphQL\Type\Definition\ListOfType;
 use GraphQL\Type\Definition\NonNull;
 use GraphQL\Type\Definition\ScalarType;
diff --git a/src/Validator/Rules/CustomValidationRule.php b/src/Validator/Rules/CustomValidationRule.php
index ba7cd40..5ccc606 100644
--- a/src/Validator/Rules/CustomValidationRule.php
+++ b/src/Validator/Rules/CustomValidationRule.php
@@ -1,7 +1,6 @@
 <?php
 namespace GraphQL\Validator\Rules;
 
-
 use GraphQL\Error\Error;
 use GraphQL\Validator\ValidationContext;
 
diff --git a/src/Validator/Rules/FieldsOnCorrectType.php b/src/Validator/Rules/FieldsOnCorrectType.php
index 7d052ae..1244a72 100644
--- a/src/Validator/Rules/FieldsOnCorrectType.php
+++ b/src/Validator/Rules/FieldsOnCorrectType.php
@@ -4,11 +4,9 @@ namespace GraphQL\Validator\Rules;
 use GraphQL\Error\Error;
 use GraphQL\Language\AST\FieldNode;
 use GraphQL\Language\AST\NodeKind;
-use GraphQL\Type\Definition\InputObjectType;
 use GraphQL\Type\Definition\InterfaceType;
 use GraphQL\Type\Definition\ObjectType;
 use GraphQL\Type\Definition\Type;
-use GraphQL\Type\Definition\UnionType;
 use GraphQL\Type\Schema;
 use GraphQL\Utils\Utils;
 use GraphQL\Validator\ValidationContext;
diff --git a/src/Validator/Rules/KnownFragmentNames.php b/src/Validator/Rules/KnownFragmentNames.php
index 35645db..ad5bc27 100644
--- a/src/Validator/Rules/KnownFragmentNames.php
+++ b/src/Validator/Rules/KnownFragmentNames.php
@@ -1,10 +1,8 @@
 <?php
 namespace GraphQL\Validator\Rules;
 
-
 use GraphQL\Error\Error;
 use GraphQL\Language\AST\FragmentSpreadNode;
-use GraphQL\Language\AST\Node;
 use GraphQL\Language\AST\NodeKind;
 use GraphQL\Validator\ValidationContext;
 
diff --git a/src/Validator/Rules/KnownTypeNames.php b/src/Validator/Rules/KnownTypeNames.php
index 47065c1..935b3ad 100644
--- a/src/Validator/Rules/KnownTypeNames.php
+++ b/src/Validator/Rules/KnownTypeNames.php
@@ -5,7 +5,6 @@ use GraphQL\Error\Error;
 use GraphQL\Language\AST\NamedTypeNode;
 use GraphQL\Language\AST\NodeKind;
 use GraphQL\Language\Visitor;
-use GraphQL\Type\Definition\Type;
 use GraphQL\Utils\Utils;
 use GraphQL\Validator\ValidationContext;
 
diff --git a/src/Validator/Rules/LoneAnonymousOperation.php b/src/Validator/Rules/LoneAnonymousOperation.php
index f02025f..7f848ef 100644
--- a/src/Validator/Rules/LoneAnonymousOperation.php
+++ b/src/Validator/Rules/LoneAnonymousOperation.php
@@ -3,7 +3,6 @@ namespace GraphQL\Validator\Rules;
 
 use GraphQL\Error\Error;
 use GraphQL\Language\AST\DocumentNode;
-use GraphQL\Language\AST\Node;
 use GraphQL\Language\AST\NodeKind;
 use GraphQL\Language\AST\OperationDefinitionNode;
 use GraphQL\Utils\Utils;
diff --git a/src/Validator/Rules/NoFragmentCycles.php b/src/Validator/Rules/NoFragmentCycles.php
index cf3eb0a..df81b77 100644
--- a/src/Validator/Rules/NoFragmentCycles.php
+++ b/src/Validator/Rules/NoFragmentCycles.php
@@ -1,11 +1,8 @@
 <?php
 namespace GraphQL\Validator\Rules;
 
-
 use GraphQL\Error\Error;
 use GraphQL\Language\AST\FragmentDefinitionNode;
-use GraphQL\Language\AST\FragmentSpreadNode;
-use GraphQL\Language\AST\Node;
 use GraphQL\Language\AST\NodeKind;
 use GraphQL\Language\Visitor;
 use GraphQL\Utils\Utils;
diff --git a/src/Validator/Rules/PossibleFragmentSpreads.php b/src/Validator/Rules/PossibleFragmentSpreads.php
index 37a24dc..0647e6f 100644
--- a/src/Validator/Rules/PossibleFragmentSpreads.php
+++ b/src/Validator/Rules/PossibleFragmentSpreads.php
@@ -1,7 +1,6 @@
 <?php
 namespace GraphQL\Validator\Rules;
 
-
 use GraphQL\Error\Error;
 use GraphQL\Language\AST\FragmentSpreadNode;
 use GraphQL\Language\AST\InlineFragmentNode;
diff --git a/src/Validator/Rules/ProvidedNonNullArguments.php b/src/Validator/Rules/ProvidedNonNullArguments.php
index a0370f9..4d0c63c 100644
--- a/src/Validator/Rules/ProvidedNonNullArguments.php
+++ b/src/Validator/Rules/ProvidedNonNullArguments.php
@@ -1,15 +1,12 @@
 <?php
 namespace GraphQL\Validator\Rules;
 
-
 use GraphQL\Error\Error;
 use GraphQL\Language\AST\DirectiveNode;
 use GraphQL\Language\AST\FieldNode;
-use GraphQL\Language\AST\Node;
 use GraphQL\Language\AST\NodeKind;
 use GraphQL\Language\Visitor;
 use GraphQL\Type\Definition\NonNull;
-use GraphQL\Utils\Utils;
 use GraphQL\Validator\ValidationContext;
 
 class ProvidedNonNullArguments extends AbstractValidationRule
diff --git a/src/Validator/Rules/QueryComplexity.php b/src/Validator/Rules/QueryComplexity.php
index 0b1d611..638010d 100644
--- a/src/Validator/Rules/QueryComplexity.php
+++ b/src/Validator/Rules/QueryComplexity.php
@@ -1,5 +1,4 @@
 <?php
-
 namespace GraphQL\Validator\Rules;
 
 use GraphQL\Error\Error;
diff --git a/src/Validator/Rules/UniqueFragmentNames.php b/src/Validator/Rules/UniqueFragmentNames.php
index af5706b..ebeb0b2 100644
--- a/src/Validator/Rules/UniqueFragmentNames.php
+++ b/src/Validator/Rules/UniqueFragmentNames.php
@@ -2,9 +2,7 @@
 namespace GraphQL\Validator\Rules;
 
 use GraphQL\Error\Error;
-use GraphQL\Language\AST\ArgumentNode;
 use GraphQL\Language\AST\FragmentDefinitionNode;
-use GraphQL\Language\AST\Node;
 use GraphQL\Language\AST\NodeKind;
 use GraphQL\Language\Visitor;
 use GraphQL\Validator\ValidationContext;
diff --git a/src/Validator/Rules/UniqueInputFieldNames.php b/src/Validator/Rules/UniqueInputFieldNames.php
index 3e60df8..1e48d48 100644
--- a/src/Validator/Rules/UniqueInputFieldNames.php
+++ b/src/Validator/Rules/UniqueInputFieldNames.php
@@ -2,7 +2,6 @@
 namespace GraphQL\Validator\Rules;
 
 use GraphQL\Error\Error;
-use GraphQL\Language\AST\Node;
 use GraphQL\Language\AST\NodeKind;
 use GraphQL\Language\AST\ObjectFieldNode;
 use GraphQL\Language\Visitor;
diff --git a/src/Validator/Rules/UniqueOperationNames.php b/src/Validator/Rules/UniqueOperationNames.php
index 17fff14..80a352c 100644
--- a/src/Validator/Rules/UniqueOperationNames.php
+++ b/src/Validator/Rules/UniqueOperationNames.php
@@ -2,7 +2,6 @@
 namespace GraphQL\Validator\Rules;
 
 use GraphQL\Error\Error;
-use GraphQL\Language\AST\Node;
 use GraphQL\Language\AST\NodeKind;
 use GraphQL\Language\AST\OperationDefinitionNode;
 use GraphQL\Language\Visitor;
diff --git a/src/Validator/Rules/UniqueVariableNames.php b/src/Validator/Rules/UniqueVariableNames.php
index cdbb1ca..4329721 100644
--- a/src/Validator/Rules/UniqueVariableNames.php
+++ b/src/Validator/Rules/UniqueVariableNames.php
@@ -2,7 +2,6 @@
 namespace GraphQL\Validator\Rules;
 
 use GraphQL\Error\Error;
-use GraphQL\Language\AST\Node;
 use GraphQL\Language\AST\NodeKind;
 use GraphQL\Language\AST\VariableDefinitionNode;
 use GraphQL\Validator\ValidationContext;