Increase PHPStan rule level

Author: gapple

.gitignore

@@ -2,4 +2,5 @@ composer.lock
 /vendor/
 /tmp/
 phpcs.xml
+phpstan.neon
 phpunit.xml

phpstan.neon.dist

@@ -1,8 +1,13 @@
 includes:
     - vendor/phpstan/phpstan-phpunit/extension.neon
     - vendor/phpstan/phpstan-phpunit/rules.neon
+
 parameters:
-	level: 1
-	paths:
-		- src
-		- tests
+    level: 5
+    paths:
+        - src
+        - tests
+
+    universalObjectCratesClasses:
+        - gapple\StructuredFields\Dictionary
+        - gapple\StructuredFields\Parameters

src/Serializer.php

@@ -170,7 +170,7 @@ private static function serializeInteger(int $value): string
         if ($value > 999999999999999 || $value < -999999999999999) {
             throw new SerializeException("Integers are limited to 15 digits");
         }
-        return $value;
+        return (string) $value;
     }
 
     private static function serializeDecimal(float $value): string

tests/Httpwg/HttpwgTest.php

@@ -32,6 +32,7 @@ protected function rulesetDataProvider(): array
         }
 
         $dataset = [];
+        /** @var \stdClass $rule */
         foreach ($rules as $rule) {
             if (isset($rule->expected)) {
                 try {
@@ -166,6 +167,7 @@ private static function convertExpectedDictionary(array $dictionary): Dictionary
     private static function convertValue($data)
     {
         if (is_object($data) && property_exists($data, '__type')) {
+            /** @var \stdClass $data */
             switch ($data->__type) {
                 case 'token':
                     return new Token($data->value);