diff --git a/packages/admin/src/Charcoal/Admin/Config.php b/packages/admin/src/Charcoal/Admin/Config.php
index 0f750216a..5fd4c9949 100644
--- a/packages/admin/src/Charcoal/Admin/Config.php
+++ b/packages/admin/src/Charcoal/Admin/Config.php
@@ -50,7 +50,7 @@ class Config extends AbstractConfig
      *
      * @return array
      */
-    public function defaults()
+    public function defaults(): array
     {
         $baseDir = rtrim(realpath(__DIR__ . '/../../../'), '/');
         $confDir = $baseDir . '/config';
diff --git a/packages/admin/src/Charcoal/Admin/User/AuthTokenMetadata.php b/packages/admin/src/Charcoal/Admin/User/AuthTokenMetadata.php
index 9874dfae5..36161df0c 100644
--- a/packages/admin/src/Charcoal/Admin/User/AuthTokenMetadata.php
+++ b/packages/admin/src/Charcoal/Admin/User/AuthTokenMetadata.php
@@ -13,7 +13,7 @@ class AuthTokenMetadata extends BaseAuthTokenMetadata
     /**
      * @return array
      */
-    public function defaults()
+    public function defaults(): array
     {
         $parentDefaults = parent::defaults();
 
diff --git a/packages/app/src/Charcoal/App/AppConfig.php b/packages/app/src/Charcoal/App/AppConfig.php
index 8c7b8a809..0853462af 100644
--- a/packages/app/src/Charcoal/App/AppConfig.php
+++ b/packages/app/src/Charcoal/App/AppConfig.php
@@ -19,68 +19,51 @@ class AppConfig extends AbstractConfig
 {
     /**
      * The application's timezone.
-     *
-     * @var string|null
      */
-    private $timezone;
+    private ?string $timezone;
 
     /**
      * The application's name.
      *
      * For internal usage.
-     *
-     * @var string|null
      */
-    private $projectName;
+    private ?string $projectName;
 
     /**
      * The base URL (public) for the Charcoal installation.
-     *
-     * @var UriInterface|null
      */
-    private $baseUrl;
+    private ?UriInterface $baseUrl = null;
 
     /**
      * The base path for the Charcoal installation.
-     *
-     * @var string|null
      */
-    private $basePath;
+    private ?string $basePath = null;
 
     /**
      * The path to the public / web directory.
      *
-     * @var string|null
      */
-    private $publicPath;
+    private ?string $publicPath = null;
 
     /**
      * The path to the cache directory.
-     *
-     * @var string|null
      */
-    private $cachePath;
+    private ?string $cachePath = null;
 
     /**
      * The path to the logs directory.
-     *
-     * @var string|null
      */
-    private $logsPath;
+    private ?string $logsPath = null;
 
     /**
      * Whether the debug mode is enabled (TRUE) or not (FALSE).
-     *
-     * @var boolean
      */
-    private $devMode = false;
+    private bool $devMode = false;
 
     /**
      * The application's routes.
-     *
-     * @var array
      */
-    private $routes = [];
+    private array $routes = [];
 
     /**
      * The application's dynamic routes.
@@ -91,84 +74,63 @@ class AppConfig extends AbstractConfig
 
     /**
      * The application's HTTP middleware.
-     *
-     * @var array
      */
-    private $middlewares = [];
+    private array $middlewares = [];
 
     /**
      * The application's handlers.
-     *
-     * @var array
      */
-    private $handlers = [];
+    private array $handlers = [];
 
     /**
      * The application's modules.
-     *
-     * @var array
      */
-    private $modules = [];
+    private array $modules = [];
 
     /**
      * The application's API credentials and service configsets.
-     *
-     * @var array
      */
-    private $apis = [];
+    private array $apis = [];
 
     /**
      * The application's caching configset.
-     *
-     * @var array
      */
-    private $cache;
+    private array $cache = [];
 
     /**
      * The application's logging configset.
      *
      * @var array
      */
-    private $logger;
+    private array $logger = [];
 
     /**
      * The application's view/rendering configset.
-     *
-     * @var array
      */
-    protected $view;
+    protected array $view = [];
 
     /**
      * The application's database configsets.
-     *
-     * @var array
      */
-    private $databases = [];
+    private array $databases = [];
 
     /**
      * The application's default database configset.
-     *
-     * @var string
      */
-    private $defaultDatabase;
+    private ?string $defaultDatabase;
 
     /**
      * The application's filesystem configset.
-     *
-     * @var array
      */
-    private $filesystem;
+    private array $filesystem = [];
 
     /**
      * Default app-config values.
      *
      * @return array
      */
-    public function defaults()
+    public function defaults(): array
     {
-        /** @var string $baseDir Presume that Charcoal App _is_ the application */
-        $baseDir = rtrim(realpath(__DIR__ . '/../../../'), '/') . '/';
-
         return [
             'project_name'     => '',
             'timezone'         => 'UTC',
@@ -182,7 +144,7 @@ public function defaults()
             'view'             => [],
             'databases'        => [],
             'default_database' => 'default',
-            'dev_mode'         => false
+            'dev_mode'         => false,
         ];
     }
 
@@ -209,7 +171,7 @@ public function resolveValue($value)
             'app.public_path' => $this->publicPath(),
             'app.cache_path'  => $this->cachePath(),
             'app.logs_path'   => $this->logsPath(),
-            'packages.path'   => ($_ENV['PACKAGES_PATH'] ?? 'vendor/charcoal')
+            'packages.path'   => ($_ENV['PACKAGES_PATH'] ?? 'vendor/charcoal'),
         ];
 
         if (is_string($value)) {
@@ -251,7 +213,7 @@ public function resolveValue($value)
      * @param  string $path The file to load and add.
      * @return self
      */
-    public function addFile($path)
+    public function addFile(string $path): self
     {
         $path = $this->resolveValue($path);
 
@@ -263,11 +225,11 @@ public function addFile($path)
      *
      * Resolves symlinks with realpath() and ensure trailing slash.
      *
-     * @param  string $path The absolute path to the application's root directory.
+     * @param  string|null $path The absolute path to the application's root directory.
      * @throws InvalidArgumentException If the argument is not a string.
      * @return self
      */
-    public function setBasePath($path)
+    public function setBasePath(?string $path): self
     {
         if ($path === null) {
             throw new InvalidArgumentException(
@@ -290,7 +252,7 @@ public function setBasePath($path)
      *
      * @return string|null The absolute path to the application's root directory.
      */
-    public function basePath()
+    public function basePath(): ?string
     {
         return $this->basePath;
     }
@@ -298,11 +260,11 @@ public function basePath()
     /**
      * Set the application's absolute path to the public web directory.
      *
-     * @param  string $path The path to the application's public directory.
+     * @param  string|null $path The path to the application's public directory.
      * @throws InvalidArgumentException If the argument is not a string.
      * @return self
      */
-    public function setPublicPath($path)
+    public function setPublicPath(?string $path): self
     {
         if ($path === null) {
             $this->publicPath = null;
@@ -324,7 +286,7 @@ public function setPublicPath($path)
      *
      * @return string The absolute path to the application's public directory.
      */
-    public function publicPath()
+    public function publicPath(): string
     {
         if ($this->publicPath === null) {
             $this->publicPath = $this->basePath() . DIRECTORY_SEPARATOR . 'www';
@@ -336,11 +298,11 @@ public function publicPath()
     /**
      * Set the application's absolute path to the cache directory.
      *
-     * @param  string $path The path to the application's cache directory.
+     * @param  string|null $path The path to the application's cache directory.
      * @throws InvalidArgumentException If the argument is not a string.
      * @return self
      */
-    public function setCachePath($path)
+    public function setCachePath(?string $path): self
     {
         if ($path === null) {
             $this->cachePath = null;
@@ -362,7 +324,7 @@ public function setCachePath($path)
      *
      * @return string The absolute path to the application's cache directory.
      */
-    public function cachePath()
+    public function cachePath(): string
     {
         if ($this->cachePath === null) {
             $this->cachePath = $this->basePath() . DIRECTORY_SEPARATOR . 'var' . DIRECTORY_SEPARATOR . 'cache';
@@ -374,11 +336,11 @@ public function cachePath()
     /**
      * Set the application's absolute path to the logs directory.
      *
-     * @param  string $path The path to the application's logs directory.
+     * @param  string|null $path The path to the application's logs directory.
      * @throws InvalidArgumentException If the argument is not a string.
      * @return self
      */
-    public function setLogsPath($path)
+    public function setLogsPath(?string $path): self
     {
         if ($path === null) {
             $this->logsPath = null;
@@ -400,7 +362,7 @@ public function setLogsPath($path)
      *
      * @return string The absolute path to the application's logs directory.
      */
-    public function logsPath()
+    public function logsPath(): string
     {
         if ($this->logsPath === null) {
             $this->logsPath = $this->basePath() . DIRECTORY_SEPARATOR . 'var' . DIRECTORY_SEPARATOR . 'logs';
@@ -415,7 +377,7 @@ public function logsPath()
      * @param  UriInterface|string $uri The base URI to the application's web directory.
      * @return self
      */
-    public function setBaseUrl($uri)
+    public function setBaseUrl($uri): self
     {
         if (is_string($uri)) {
             $this->baseUrl = Uri::createFromString($uri);
@@ -430,7 +392,7 @@ public function setBaseUrl($uri)
      *
      * @return UriInterface|null The base URI to the application's web directory.
      */
-    public function baseUrl()
+    public function baseUrl(): ?UriInterface
     {
         return $this->baseUrl;
     }
@@ -442,14 +404,8 @@ public function baseUrl()
      * @throws InvalidArgumentException If the argument is not a string.
      * @return self
      */
-    public function setTimezone($timezone)
+    public function setTimezone(string $timezone): self
     {
-        if (!is_string($timezone)) {
-            throw new InvalidArgumentException(
-                'Timezone must be a string.'
-            );
-        }
-
         $this->timezone = $timezone;
         return $this;
     }
@@ -461,13 +417,9 @@ public function setTimezone($timezone)
      *
      * @return string
      */
-    public function timezone()
+    public function timezone(): string
     {
-        if (isset($this->timezone)) {
-            return $this->timezone;
-        } else {
-            return 'UTC';
-        }
+        return ($this->timezone ?? 'UTC');
     }
 
     /**
@@ -477,7 +429,7 @@ public function timezone()
      * @throws InvalidArgumentException If the project argument is not a string (or null).
      * @return self
      */
-    public function setProjectName($projectName)
+    public function setProjectName(?string $projectName): self
     {
         if ($projectName === null) {
             $this->projectName = null;
@@ -496,7 +448,7 @@ public function setProjectName($projectName)
     /**
      * @return string|null
      */
-    public function projectName()
+    public function projectName(): ?string
     {
         if ($this->projectName === null) {
             $baseUrl = $this->baseUrl();
@@ -512,7 +464,7 @@ public function projectName()
      * @param boolean $devMode The "dev mode" flag.
      * @return self
      */
-    public function setDevMode($devMode)
+    public function setDevMode(bool $devMode): self
     {
         $this->devMode = !!$devMode;
         return $this;
@@ -521,7 +473,7 @@ public function setDevMode($devMode)
     /**
      * @return boolean
      */
-    public function devMode()
+    public function devMode(): bool
     {
         return !!$this->devMode;
     }
@@ -533,7 +485,7 @@ public function devMode()
      * @throws InvalidArgumentException If the argument is not a configset.
      * @return self
      */
-    public function setView(array $view)
+    public function setView(array $view): self
     {
         $this->view = $view;
         return $this;
@@ -544,7 +496,7 @@ public function setView(array $view)
      *
      * @return array
      */
-    public function view()
+    public function view(): array
     {
         return $this->view;
     }
@@ -555,7 +507,7 @@ public function view()
      * @param  array $apis The API configuration structure to set.
      * @return self
      */
-    public function setApis(array $apis)
+    public function setApis(array $apis): self
     {
         $this->apis = $apis;
         return $this;
@@ -564,7 +516,7 @@ public function setApis(array $apis)
     /**
      * @return array
      */
-    public function apis()
+    public function apis(): array
     {
         return $this->apis;
     }
@@ -576,7 +528,7 @@ public function apis()
      * @param  array $routes The route configuration structure to set.
      * @return self
      */
-    public function setRoutes(array $routes)
+    public function setRoutes(array $routes): self
     {
         $this->routes = $routes;
         return $this;
@@ -585,7 +537,7 @@ public function setRoutes(array $routes)
     /**
      * @return array
      */
-    public function routes()
+    public function routes(): array
     {
         return $this->routes;
     }
@@ -594,7 +546,7 @@ public function routes()
      * @param  array|boolean $routables The routable configuration structure to set or FALSE to disable dynamic routing.
      * @return self
      */
-    public function setRoutables($routables)
+    public function setRoutables($routables): self
     {
         if ($routables !== false) {
             if (!is_array($routables) || empty($routables)) {
@@ -620,7 +572,7 @@ public function routables()
      * @param  array $middlewares The middleware configuration structure to set.
      * @return self
      */
-    public function setMiddlewares(array $middlewares)
+    public function setMiddlewares(array $middlewares): self
     {
         $this->middlewares = $middlewares;
         return $this;
@@ -629,7 +581,7 @@ public function setMiddlewares(array $middlewares)
     /**
      * @return array
      */
-    public function middlewares()
+    public function middlewares(): array
     {
         return $this->middlewares;
     }
@@ -647,7 +599,7 @@ public function middlewares()
      * @param  array $handlers The handlers configuration structure to set.
      * @return self
      */
-    public function setHandlers(array $handlers)
+    public function setHandlers(array $handlers): self
     {
         $this->handlers = $handlers;
         return $this;
@@ -656,7 +608,7 @@ public function setHandlers(array $handlers)
     /**
      * @return array
      */
-    public function handlers()
+    public function handlers(): array
     {
         return $this->handlers;
     }
@@ -667,7 +619,7 @@ public function handlers()
      * @param array $modules The module configuration structure to set.
      * @return self
      */
-    public function setModules(array $modules)
+    public function setModules(array $modules): self
     {
         $this->modules = $modules;
         return $this;
@@ -676,7 +628,7 @@ public function setModules(array $modules)
     /**
      * @return array
      */
-    public function modules()
+    public function modules(): array
     {
         return $this->modules;
     }
@@ -688,7 +640,7 @@ public function modules()
      * @throws InvalidArgumentException If the argument is not a configset.
      * @return self
      */
-    public function setCache(array $cache)
+    public function setCache(array $cache): self
     {
         $this->cache = $cache;
         return $this;
@@ -699,7 +651,7 @@ public function setCache(array $cache)
      *
      * @return array
      */
-    public function cache()
+    public function cache(): array
     {
         return $this->cache;
     }
@@ -711,7 +663,7 @@ public function cache()
      * @throws InvalidArgumentException If the argument is not a configset.
      * @return self
      */
-    public function setLogger(array $logger)
+    public function setLogger(array $logger): self
     {
         $this->logger = $logger;
         return $this;
@@ -722,16 +674,16 @@ public function setLogger(array $logger)
      *
      * @return array
      */
-    public function logger()
+    public function logger(): array
     {
         return $this->logger;
     }
 
     /**
-     * @param array $databases The avaiable databases config.
+     * @param array $databases The available databases config.
      * @return self
      */
-    public function setDatabases(array $databases)
+    public function setDatabases(array $databases): self
     {
         $this->databases = $databases;
         return $this;
@@ -741,7 +693,7 @@ public function setDatabases(array $databases)
      * @throws Exception If trying to access this method and no databases were set.
      * @return array
      */
-    public function databases()
+    public function databases(): array
     {
         if ($this->databases === null) {
             throw new Exception(
@@ -757,13 +709,8 @@ public function databases()
      * @throws Exception If trying to access an invalid database.
      * @return array
      */
-    public function databaseConfig($ident)
+    public function databaseConfig(string $ident): array
     {
-        if (!is_string($ident)) {
-            throw new InvalidArgumentException(
-                'Invalid app config: default database must be a string.'
-            );
-        }
         $databases = $this->databases();
         if (!isset($databases[$ident])) {
             throw new Exception(
@@ -778,13 +725,8 @@ public function databaseConfig($ident)
      * @throws InvalidArgumentException If the argument is not a string.
      * @return self
      */
-    public function setDefaultDatabase($defaultDatabase)
+    public function setDefaultDatabase(string $defaultDatabase): self
     {
-        if (!is_string($defaultDatabase)) {
-            throw new InvalidArgumentException(
-                'Invalid app config: Default database must be a string.'
-            );
-        }
         $this->defaultDatabase = $defaultDatabase;
         return $this;
     }
@@ -795,14 +737,8 @@ public function setDefaultDatabase($defaultDatabase)
      * @throws InvalidArgumentException If the arguments are invalid.
      * @return self
      */
-    public function addDatabase($ident, array $config)
+    public function addDatabase(string $ident, array $config): self
     {
-        if (!is_string($ident)) {
-            throw new InvalidArgumentException(
-                'Invalid app config: database ident must be a string.'
-            );
-        }
-
         if ($this->databases === null) {
             $this->databases = [];
         }
@@ -812,9 +748,9 @@ public function addDatabase($ident, array $config)
 
     /**
      * @throws Exception If trying to access this method before a setter.
-     * @return mixed
+     * @return string
      */
-    public function defaultDatabase()
+    public function defaultDatabase(): string
     {
         if ($this->defaultDatabase === null) {
             throw new Exception(
@@ -831,7 +767,7 @@ public function defaultDatabase()
      * @throws InvalidArgumentException If the argument is not a configset.
      * @return self
      */
-    public function setFilesystem(array $filesystem)
+    public function setFilesystem(array $filesystem): self
     {
         $this->filesystem = $filesystem;
         return $this;
@@ -842,7 +778,7 @@ public function setFilesystem(array $filesystem)
      *
      * @return array
      */
-    public function filesystem()
+    public function filesystem(): array
     {
         return $this->filesystem;
     }
diff --git a/packages/app/src/Charcoal/App/Config/DatabaseConfig.php b/packages/app/src/Charcoal/App/Config/DatabaseConfig.php
index c5533aa49..a76296eb3 100644
--- a/packages/app/src/Charcoal/App/Config/DatabaseConfig.php
+++ b/packages/app/src/Charcoal/App/Config/DatabaseConfig.php
@@ -44,7 +44,7 @@ class DatabaseConfig extends AbstractConfig
     /**
      * @return array
      */
-    public function defaults()
+    public function defaults(): array
     {
         return [
             'type'         => 'mysql',
diff --git a/packages/app/src/Charcoal/App/Config/LoggerConfig.php b/packages/app/src/Charcoal/App/Config/LoggerConfig.php
index 800314189..214056ff1 100644
--- a/packages/app/src/Charcoal/App/Config/LoggerConfig.php
+++ b/packages/app/src/Charcoal/App/Config/LoggerConfig.php
@@ -50,7 +50,7 @@ class LoggerConfig extends AbstractConfig
      *
      * @return array
      */
-    public function defaults()
+    public function defaults(): array
     {
         return [
             'active'    => true,
diff --git a/packages/cache/src/Charcoal/Cache/CacheConfig.php b/packages/cache/src/Charcoal/Cache/CacheConfig.php
index 041df2bc9..ad8724fb6 100644
--- a/packages/cache/src/Charcoal/Cache/CacheConfig.php
+++ b/packages/cache/src/Charcoal/Cache/CacheConfig.php
@@ -66,7 +66,7 @@ class CacheConfig extends AbstractConfig
      *
      * @return array
      */
-    public function defaults()
+    public function defaults(): array
     {
         return [
             'active'      => true,
diff --git a/packages/cache/src/Charcoal/Cache/Middleware/CacheMiddleware.php b/packages/cache/src/Charcoal/Cache/Middleware/CacheMiddleware.php
index 1c94a670c..f71037999 100644
--- a/packages/cache/src/Charcoal/Cache/Middleware/CacheMiddleware.php
+++ b/packages/cache/src/Charcoal/Cache/Middleware/CacheMiddleware.php
@@ -145,7 +145,7 @@ public function __construct(array $data)
      *
      * @return array
      */
-    public function defaults()
+    public function defaults(): array
     {
         return [
             'ttl'            => CacheConfig::DAY_IN_SECONDS,
diff --git a/packages/config/src/Charcoal/Config/AbstractConfig.php b/packages/config/src/Charcoal/Config/AbstractConfig.php
index d9a33d9e8..5a06b0f8b 100644
--- a/packages/config/src/Charcoal/Config/AbstractConfig.php
+++ b/packages/config/src/Charcoal/Config/AbstractConfig.php
@@ -82,7 +82,7 @@ final public function __construct($data = null, array $delegates = null)
      *
      * @return array Key-value array of data
      */
-    public function defaults()
+    public function defaults(): array
     {
         return [];
     }
@@ -96,7 +96,7 @@ public function defaults()
      *     (such as {@see ConfigInterface}).
      * @return self
      */
-    public function merge($data)
+    public function merge($data): self
     {
         foreach ($data as $key => $value) {
             $this->offsetReplace($key, $value);
@@ -334,7 +334,7 @@ public function offsetReplace($key, $value)
      * @param  string $path The file to load and add.
      * @return self
      */
-    public function addFile($path)
+    public function addFile(string $path): self
     {
         $config = $this->loadFile($path);
         if (is_array($config)) {
diff --git a/packages/config/src/Charcoal/Config/ConfigInterface.php b/packages/config/src/Charcoal/Config/ConfigInterface.php
index 780dcd384..83ed59e94 100644
--- a/packages/config/src/Charcoal/Config/ConfigInterface.php
+++ b/packages/config/src/Charcoal/Config/ConfigInterface.php
@@ -18,7 +18,7 @@ interface ConfigInterface extends
      *
      * @return array Key-value array of data
      */
-    public function defaults();
+    public function defaults(): array;
 
     /**
      * Adds new data, replacing / merging existing data with the same key.
@@ -26,7 +26,7 @@ public function defaults();
      * @param  array|\Traversable $data Key-value array of data to merge.
      * @return ConfigInterface Chainable
      */
-    public function merge($data);
+    public function merge(array $data): ConfigInterface;
 
     /**
      * Add a configuration file to the configset.
@@ -34,5 +34,5 @@ public function merge($data);
      * @param  string $path The file to load and add.
      * @return ConfigInterface Chainable
      */
-    public function addFile($path);
+    public function addFile(string $path): ConfigInterface;
 }
diff --git a/packages/config/tests/Charcoal/Config/Mock/MacroConfig.php b/packages/config/tests/Charcoal/Config/Mock/MacroConfig.php
index 9a4dd4933..128abc9a3 100644
--- a/packages/config/tests/Charcoal/Config/Mock/MacroConfig.php
+++ b/packages/config/tests/Charcoal/Config/Mock/MacroConfig.php
@@ -16,7 +16,7 @@ class MacroConfig extends AbstractConfig
     /**
      * @return array
      */
-    public function defaults()
+    public function defaults(): array
     {
         return [
             'foo' => -3,
diff --git a/packages/core/src/Charcoal/Model/Service/MetadataConfig.php b/packages/core/src/Charcoal/Model/Service/MetadataConfig.php
index 446dc61bf..442f59c20 100644
--- a/packages/core/src/Charcoal/Model/Service/MetadataConfig.php
+++ b/packages/core/src/Charcoal/Model/Service/MetadataConfig.php
@@ -34,7 +34,7 @@ class MetadataConfig extends AbstractConfig
      * @return mixed An associative array if $key is NULL.
      *     If $key is specified, the value of that data key if it exists, NULL on failure.
      */
-    public function defaults($key = null)
+    public function defaults($key = null): array
     {
         $data = [
             'paths' => [],
@@ -55,7 +55,7 @@ public function defaults($key = null)
      * @param  array|Traversable $data The data to merge.
      * @return self
      */
-    public function merge($data)
+    public function merge($data): self
     {
         foreach ($data as $key => $val) {
             if ($key === 'paths') {
diff --git a/packages/core/src/Charcoal/Source/DatabaseSourceConfig.php b/packages/core/src/Charcoal/Source/DatabaseSourceConfig.php
index 6cfe1042c..1cfbfee80 100644
--- a/packages/core/src/Charcoal/Source/DatabaseSourceConfig.php
+++ b/packages/core/src/Charcoal/Source/DatabaseSourceConfig.php
@@ -44,7 +44,7 @@ class DatabaseSourceConfig extends SourceConfig
     /**
      * @return array
      */
-    public function defaults()
+    public function defaults(): array
     {
         return [
             'type'         => 'mysql',
diff --git a/packages/core/src/Charcoal/Source/SourceConfig.php b/packages/core/src/Charcoal/Source/SourceConfig.php
index 5f4081606..09b9b756a 100644
--- a/packages/core/src/Charcoal/Source/SourceConfig.php
+++ b/packages/core/src/Charcoal/Source/SourceConfig.php
@@ -19,7 +19,7 @@ class SourceConfig extends AbstractConfig
     /**
      * @return array
      */
-    public function defaults()
+    public function defaults(): array
     {
         return [
             'type' => ''
diff --git a/packages/translator/src/Charcoal/Translator/LocalesConfig.php b/packages/translator/src/Charcoal/Translator/LocalesConfig.php
index 7640c6111..f042e59d4 100644
--- a/packages/translator/src/Charcoal/Translator/LocalesConfig.php
+++ b/packages/translator/src/Charcoal/Translator/LocalesConfig.php
@@ -37,7 +37,7 @@ class LocalesConfig extends AbstractConfig
     /**
      * @return array
      */
-    public function defaults()
+    public function defaults(): array
     {
         return [
             'languages' => [
diff --git a/packages/translator/src/Charcoal/Translator/Middleware/LanguageMiddleware.php b/packages/translator/src/Charcoal/Translator/Middleware/LanguageMiddleware.php
index 388157429..4ebaec46b 100644
--- a/packages/translator/src/Charcoal/Translator/Middleware/LanguageMiddleware.php
+++ b/packages/translator/src/Charcoal/Translator/Middleware/LanguageMiddleware.php
@@ -119,7 +119,7 @@ public function __construct(array $data)
      *
      * @return array
      */
-    public function defaults()
+    public function defaults(): array
     {
         return [
             'default_language' => null,
diff --git a/packages/translator/src/Charcoal/Translator/TranslatorConfig.php b/packages/translator/src/Charcoal/Translator/TranslatorConfig.php
index 9063debdb..29a2d1e77 100644
--- a/packages/translator/src/Charcoal/Translator/TranslatorConfig.php
+++ b/packages/translator/src/Charcoal/Translator/TranslatorConfig.php
@@ -52,7 +52,7 @@ class TranslatorConfig extends AbstractConfig
     /**
      * @return array
      */
-    public function defaults()
+    public function defaults(): array
     {
         return [
             'loaders' => [
diff --git a/packages/user/src/Charcoal/User/AuthTokenMetadata.php b/packages/user/src/Charcoal/User/AuthTokenMetadata.php
index 43c445d54..de39268a0 100644
--- a/packages/user/src/Charcoal/User/AuthTokenMetadata.php
+++ b/packages/user/src/Charcoal/User/AuthTokenMetadata.php
@@ -36,7 +36,7 @@ class AuthTokenMetadata extends ModelMetadata
      *
      * @return array
      */
-    public function defaults()
+    public function defaults(): array
     {
         $parentDefaults = parent::defaults();