1 files changed, 16 insertions, 7 deletions
diff --git a/vendor/ramsey/collection/src/Map/AbstractTypedMap.php b/vendor/ramsey/collection/src/Map/AbstractTypedMap.php
index 92fdcd54c..551d2e6c6 100644
--- a/vendor/ramsey/collection/src/Map/AbstractTypedMap.php
+++ b/vendor/ramsey/collection/src/Map/AbstractTypedMap.php
@@ -22,10 +22,10 @@ use Ramsey\Collection\Tool\ValueToStringTrait;
  * This class provides a basic implementation of `TypedMapInterface`, to
  * minimize the effort required to implement this interface.
  *
- * @template K of array-key
+ * @template K
  * @template T
- * @extends AbstractMap<K, T>
- * @implements TypedMapInterface<K, T>
+ * @extends AbstractMap<T>
+ * @implements TypedMapInterface<T>
  */
 abstract class AbstractTypedMap extends AbstractMap implements TypedMapInterface
 {
@@ -33,28 +33,37 @@ abstract class AbstractTypedMap extends AbstractMap implements TypedMapInterface
     use ValueToStringTrait;
 
     /**
-     * @param K $offset
+     * @param K|null $offset
      * @param T $value
      *
      * @inheritDoc
+     *
      * @psalm-suppress MoreSpecificImplementedParamType
      */
-    public function offsetSet(mixed $offset, mixed $value): void
+    public function offsetSet($offset, $value): void
     {
+        if ($offset === null) {
+            throw new InvalidArgumentException(
+                'Map elements are key/value pairs; a key must be provided for '
+                . 'value ' . var_export($value, true)
+            );
+        }
+
         if ($this->checkType($this->getKeyType(), $offset) === false) {
             throw new InvalidArgumentException(
                 'Key must be of type ' . $this->getKeyType() . '; key is '
-                . $this->toolValueToString($offset),
+                . $this->toolValueToString($offset)
             );
         }
 
         if ($this->checkType($this->getValueType(), $value) === false) {
             throw new InvalidArgumentException(
                 'Value must be of type ' . $this->getValueType() . '; value is '
-                . $this->toolValueToString($value),
+                . $this->toolValueToString($value)
             );
         }
 
+        /** @psalm-suppress MixedArgumentTypeCoercion */
         parent::offsetSet($offset, $value);
     }
 }