Incorporates feedback

Author: weierophinney

.travis.yml

@@ -38,7 +38,7 @@ before_install:
   - if [[ $TEST_COVERAGE != 'true' ]]; then phpenv config-rm xdebug.ini || return 0 ; fi
 
 install:
-  - travis_retry composer install $COMPOSER_ARGS --ignore-platform-reqs
+  - travis_retry composer install $COMPOSER_ARGS
   - if [[ $DEPS == 'latest' ]]; then travis_retry composer update $COMPOSER_ARGS ; fi
   - if [[ $DEPS == 'lowest' ]]; then travis_retry composer update --prefer-lowest --prefer-stable $COMPOSER_ARGS ; fi
   - if [[ $TEST_COVERAGE == 'true' ]]; then travis_retry composer require --dev $COMPOSER_ARGS $COVERAGE_DEPS ; fi

composer.json

@@ -31,7 +31,7 @@
     },
     "require-dev": {
         "malukenho/docheader": "^0.1.5",
-        "phpunit/phpunit": "^6.5.3",
+        "phpunit/phpunit": "^6.5.4",
         "zendframework/zend-coding-standard": "~1.0.0"
     },
     "conflict": {

composer.lock

@@ -29,7 +29,7 @@
  */
 class NamespacedPathStackResolver extends TemplatePathStack
 {
-    const DEFAULT_NAMESPACE = '__DEFAULT__';
+    public const DEFAULT_NAMESPACE = '__DEFAULT__';
 
     /**
      * @var array

src/NamespacedPathStackResolver.php

@@ -33,7 +33,7 @@ public function __construct(BaseHelper $helper)
      *
      * Proxies to `Zend\Expressive\Helper\ServerUrlHelper::generate()`.
      */
-    public function __invoke(?string $path = null) : string
+    public function __invoke(string $path = null) : string
     {
         return $this->helper->generate($path);
     }