🐛 postal exception codes are not numeric

Author: willpower232

src/Client.php

@@ -73,10 +73,9 @@ protected function validateResponse(ResponseInterface $response): array
             $code = 0;
             if (isset($json['data']['code'])) {
                 $message = $json['data']['code'] . ': ' . $message;
-                $code = $json['data']['code'];
             }
 
-            throw new ApiException($message, $code);
+            throw new ApiException($message);
         }
 
         if (! isset($json['data'])) {

tests/ClientTest.php

@@ -41,14 +41,13 @@ public function testPrepareResponseThrowsApiErrors(): void
         $response = new Response(200, [], json_encode([
             'status' => 'error',
             'data' => [
-                'code' => 5,
+                'code' => 'TestExceptionCode',
                 'message' => 'my-test-error',
             ],
         ]));
 
         $this->expectException(ApiException::class);
-        $this->expectExceptionMessage('5: my-test-error');
-        $this->expectExceptionCode(5);
+        $this->expectExceptionMessage('TestExceptionCode: my-test-error');
 
         $client->prepareResponse($response, new class() {
         });