Check composer requirements on Travis

Author: lookyman

.travis.yml

@@ -11,3 +11,6 @@ before_script:
   - if [ "$dependencies" = "highest" ]; then composer update --no-interaction; fi;
 script:
   - vendor/bin/phing
+  - >
+    wget https://github.com/maglnet/ComposerRequireChecker/releases/download/0.2.1/composer-require-checker.phar
+    && php composer-require-checker.phar check composer.json

src/Type/WebMozartAssert/AssertTypeSpecifyingExtension.php

@@ -35,7 +35,7 @@ public function setTypeSpecifier(TypeSpecifier $typeSpecifier): void
 
 	public function getClass(): string
 	{
-		return \Webmozart\Assert\Assert::class;
+		return 'Webmozart\Assert\Assert';
 	}
 
 	public function isStaticMethodSupported(