refactoring: improve readable code.

Author: uzulla

src/Adapters/Archive/Detectors/AuthorName.php

@@ -15,6 +15,6 @@ public function detect(): ?string
         $api = $extractor->getApi();
 
         $result = $api->str('metadata', 'creator');
-        return ($result !== null && $result !== '') ? $result : parent::detect();
+        return (is_string($result) && $result !== '') ? $result : parent::detect();
     }
 }

src/Adapters/Archive/Detectors/Description.php

@@ -15,6 +15,6 @@ public function detect(): ?string
         $api = $extractor->getApi();
 
         $result = $api->str('metadata', 'extract');
-        return ($result !== null && $result !== '') ? $result : parent::detect();
+        return (is_string($result) && $result !== '') ? $result : parent::detect();
     }
 }

src/Adapters/Archive/Detectors/Title.php

@@ -15,6 +15,6 @@ public function detect(): ?string
         $api = $extractor->getApi();
 
         $result = $api->str('metadata', 'title');
-        return ($result !== null && $result !== '') ? $result : parent::detect();
+        return (is_string($result) && $result !== '') ? $result : parent::detect();
     }
 }

src/Adapters/Gist/Detectors/AuthorName.php

@@ -15,6 +15,6 @@ public function detect(): ?string
         $api = $extractor->getApi();
 
         $result = $api->str('owner');
-        return ($result !== null && $result !== '') ? $result : parent::detect();
+        return (is_string($result) && $result !== '') ? $result : parent::detect();
     }
 }

src/Adapters/Gist/Detectors/AuthorUrl.php

@@ -16,7 +16,7 @@ public function detect(): ?UriInterface
         $api = $extractor->getApi();
         $owner = $api->str('owner');
 
-        if ($owner !== null && $owner !== '') {
+        if (is_string($owner) && $owner !== '') {
             return $extractor->getCrawler()->createUri("https://github.com/{$owner}");
         }
 

src/Adapters/ImageShack/Detectors/AuthorName.php

@@ -15,6 +15,6 @@ public function detect(): ?string
         $api = $extractor->getApi();
 
         $result = $api->str('owner', 'username');
-        return ($result !== null && $result !== '') ? $result : parent::detect();
+        return (is_string($result) && $result !== '') ? $result : parent::detect();
     }
 }

src/Adapters/ImageShack/Detectors/AuthorUrl.php

@@ -16,7 +16,7 @@ public function detect(): ?UriInterface
         $api = $extractor->getApi();
         $owner = $api->str('owner', 'username');
 
-        if ($owner !== null && $owner !== '') {
+        if (is_string($owner) && $owner !== '') {
             return $extractor->getCrawler()->createUri("https://imageshack.com/{$owner}");
         }
 

src/Adapters/ImageShack/Detectors/Description.php

@@ -15,6 +15,6 @@ public function detect(): ?string
         $api = $extractor->getApi();
 
         $result = $api->str('description');
-        return ($result !== null && $result !== '') ? $result : parent::detect();
+        return (is_string($result) && $result !== '') ? $result : parent::detect();
     }
 }

src/Adapters/ImageShack/Detectors/Title.php

@@ -15,6 +15,6 @@ public function detect(): ?string
         $api = $extractor->getApi();
 
         $result = $api->str('title');
-        return ($result !== null && $result !== '') ? $result : parent::detect();
+        return (is_string($result) && $result !== '') ? $result : parent::detect();
     }
 }

src/Adapters/Twitter/Detectors/AuthorName.php

@@ -15,6 +15,6 @@ public function detect(): ?string
         $api = $extractor->getApi();
 
         $result = $api->str('includes', 'users', '0', 'name');
-        return ($result !== null && $result !== '') ? $result : parent::detect();
+        return (is_string($result) && $result !== '') ? $result : parent::detect();
     }
 }