Fix PSR-12 conformance

Author: kocsismate

CHANGELOG.md

@@ -25,7 +25,7 @@
         "phpstan/phpstan-phpunit": "^0.11.2",
         "phpstan/phpstan-strict-rules": "^0.11.0",
         "phpunit/phpunit": "^7.0.0||^8.2.0",
-        "squizlabs/php_codesniffer": "^3.4.0",
+        "squizlabs/php_codesniffer": "^3.5.1",
         "woohoolabs/coding-standard": "^1.0.0",
         "woohoolabs/releaser": "^1.1.0"
     },

composer.json

@@ -18,4 +18,21 @@
     <file>tests/</file>
 
     <rule ref="WoohooLabs"/>
+
+    <rule ref="SlevomatCodingStandard.Namespaces.UseSpacing">
+        <properties>
+            <property name="linesCountAfterLastUse" value="1"/>
+            <property name="linesCountBeforeFirstUse" value="1"/>
+            <property name="linesCountBetweenUseTypes" value="1"/>
+        </properties>
+    </rule>
+
+    <!-- Require presence of declare(strict_types=1) -->
+    <rule ref="SlevomatCodingStandard.TypeHints.DeclareStrictTypes">
+        <properties>
+            <property name="newlinesCountBetweenOpenTagAndDeclare" value="2"/>
+            <property name="spacesCountAroundEqualsSign" value="0"/>
+            <property name="newlinesCountAfterDeclare" value="2"/>
+        </properties>
+    </rule>
 </ruleset>

phpcs.xml

@@ -1,4 +1,5 @@
 <?php
+
 declare(strict_types=1);
 
 namespace WoohooLabs\Yang\JsonApi\Client;

src/JsonApi/Client/JsonApiAsyncClient.php

@@ -1,4 +1,5 @@
 <?php
+
 declare(strict_types=1);
 
 namespace WoohooLabs\Yang\JsonApi\Client;

src/JsonApi/Client/JsonApiClient.php

@@ -1,4 +1,5 @@
 <?php
+
 declare(strict_types=1);
 
 namespace WoohooLabs\Yang\JsonApi\Exception;

src/JsonApi/Exception/DocumentException.php

@@ -1,4 +1,5 @@
 <?php
+
 declare(strict_types=1);
 
 namespace WoohooLabs\Yang\JsonApi\Exception;

src/JsonApi/Exception/JsonApiExceptionInterface.php

@@ -1,4 +1,5 @@
 <?php
+
 declare(strict_types=1);
 
 namespace WoohooLabs\Yang\JsonApi\Exception;

src/JsonApi/Exception/ResponseException.php

@@ -1,4 +1,5 @@
 <?php
+
 declare(strict_types=1);
 
 namespace WoohooLabs\Yang\JsonApi\Exception;

src/JsonApi/Exception/SerializationException.php

@@ -1,4 +1,5 @@
 <?php
+
 declare(strict_types=1);
 
 namespace WoohooLabs\Yang\JsonApi\Hydrator;