remove adapter and interface

src/AsyncClient.php

@@ -6,5 +6,5 @@
 interface AsyncClient extends Client
 {
     /** Execute a GraphQL query against an endpoint and return a Response. */
-    public function requestAsync(string $query, \stdClass $variables = null): PromiseInterface;
+    public function requestAsync(string $query, \stdClass $variables = null);
 }

src/Client/Guzzle.php

@@ -3,9 +3,9 @@
 namespace Spawnia\Sailor\Client;
 
 use GuzzleHttp\Client as GuzzleClient;
+use GuzzleHttp\Promise\PromiseInterface;
 use Psr\Http\Message\ResponseInterface;
 use Spawnia\Sailor\AsyncClient;
-use Spawnia\Sailor\PromiseInterface;
 use Spawnia\Sailor\Response;
 
 class Guzzle implements AsyncClient
@@ -42,10 +42,10 @@ public function requestAsync(string $query, \stdClass $variables = null): Promis
 
         $promise = $this->guzzle->postAsync($this->uri, ['json' => $json]);
 
-        return new GuzzlePromiseAdapter($promise->then(
+        return $promise->then(
             function (ResponseInterface $response) {
                 return Response::fromResponseInterface($response);
             }
-        ));
+        );
     }
 }

src/Codegen/OperationBuilder.php

@@ -9,7 +9,6 @@
 use Nette\PhpGenerator\PhpNamespace;
 use Spawnia\Sailor\ObjectLike;
 use Spawnia\Sailor\Operation;
-use Spawnia\Sailor\PromiseInterface;
 
 /**
  * @phpstan-type PropertyArgs array{string, Type, string, string, mixed}
@@ -71,7 +70,6 @@ public function extendOperation(string $resultClass): void
         $this->class->setComment("@extends \\{$operationBaseClass}<\\{$resultClass}>");
 
         $this->execute->setReturnType($resultClass);
-        $this->executeAsync->setReturnType(PromiseInterface::class);
     }
 
     public function storeDocument(string $operationString): void

src/Operation.php

@@ -91,9 +91,9 @@ protected static function fetchResponse(array $args): Response
     /**
      * @param  mixed  ...$args type depends on the subclass
      *
-     * @return PromiseInterface
+     * @return \GuzzleHttp\Promise\PromiseInterface
      */
-    protected static function executeOperationAsync(...$args): PromiseInterface
+    protected static function executeOperationAsync(...$args)
     {
         $mock = self::$mocks[static::class] ?? null;
         if ($mock !== null) {
@@ -120,7 +120,7 @@ function ($response) {
      *
      * @param  array<int, mixed>  $args
      */
-    protected static function fetchResponseAsync(array $args): PromiseInterface
+    protected static function fetchResponseAsync(array $args)
     {
         $endpointConfig = Configuration::endpoint(static::config(), static::endpoint());