Merge pull request #2 from shellrent/fix_jsonserializable

Fix JsonSerializable implementations

composer.json

@@ -22,7 +22,7 @@
     ],
     "require": {
         "guzzlehttp/guzzle": "^7.5",
-        "php": "^7.4 || ^8.0",
+        "php": "^8.1",
 	    "ext-json": "*"
     }
 }

src/Support/Filter.php

@@ -108,7 +108,7 @@ public function toArray() {
 		];
 	}
 
-	public function jsonSerialize() {
+	public function jsonSerialize(): mixed {
 		return [$this->toArray()];
 	}
 }

src/Support/FilterCollection.php

@@ -12,7 +12,7 @@ public function add( Filter $filter ) {
 		$this->Filters[] = $filter->toArray();
 	}
 
-	public function jsonSerialize() {
+	public function jsonSerialize(): mixed {
 		return $this->Filters;
 	}
 }