Merge pull request #39 from packbackbooks/type-error

PODB-266 Make return type optional

CHANGELOG.md

@@ -1,3 +1,7 @@
+## 4.1.2
+
+Fixed a typing error when the response body of a request is null.
+
 ## 4.1.1
 
 * Updated `LtiMessageLaunch` to fetch JWKs via an HTTP client instead of `file_get_contents()`. ([#38](https://github.com/packbackbooks/lti-1-3-php-library/pull/38))

src/Interfaces/ILtiServiceConnector.php

@@ -10,7 +10,7 @@ public function getAccessToken(ILtiRegistration $registration, array $scopes);
 
     public function makeRequest(IServiceRequest $request);
 
-    public function getResponseBody(Response $request): array;
+    public function getResponseBody(Response $request): ?array;
 
     public function makeServiceRequest(
         ILtiRegistration $registration,

src/LtiServiceConnector.php

@@ -89,7 +89,7 @@ public function makeRequest(IServiceRequest $request)
         );
     }
 
-    public function getResponseBody(Response $response): array
+    public function getResponseBody(Response $response): ?array
     {
         $responseBody = (string) $response->getBody();