@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Dhii\Modular\Module\Exception;
 
 use Dhii\Modular\Module\ModuleAwareInterface;
 
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Dhii\Modular\Module;
 
 /**
@@ -16,5 +18,5 @@ interface ModuleAwareInterface
      *
      * @return ModuleInterface|null The module, if applicable; otherwise, null.
      */
-    public function getModule();
+    public function getModule(): ?ModuleInterface;
 }
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Dhii\Modular\Module;
 
 use Dhii\Modular\Module\Exception\ModuleExceptionInterface;
@@ -31,7 +33,7 @@ interface ModuleInterface
      *
      * @throws ModuleExceptionInterface If module setup failed and/or a service provider instance could not be returned.
      */
-    public function setup() : ServiceProviderInterface;
+    public function setup(): ServiceProviderInterface;
 
     /**
      * Runs the module.
Original file line number	Diff line number	Diff line change
`@@ -1,5 +1,7 @@`
`1`	`1`	`<?php`
`2`	`2`
	`3`	`+declare(strict_types=1);`
	`4`	`+`
`3`	`5`	`namespace Dhii\Modular\Module;`
`4`	`6`
`5`	`7`	`/**`
`@@ -16,5 +18,5 @@ interface ModuleAwareInterface`
`16`	`18`	`*`
`17`	`19`	`* @return ModuleInterface\|null The module, if applicable; otherwise, null.`
`18`	`20`	`*/`
`19`		`- public function getModule();`
	`21`	`+ public function getModule(): ?ModuleInterface;`
`20`	`22`	`}`