feat: add native return types to helper functions

Author: calebdw

src/Illuminate/Collections/helpers.php

@@ -13,7 +13,7 @@
      * @param  \Illuminate\Contracts\Support\Arrayable<TKey, TValue>|iterable<TKey, TValue>|null  $value
      * @return \Illuminate\Support\Collection<TKey, TValue>
      */
-    function collect($value = [])
+    function collect($value = []): Collection
     {
         return new Collection($value);
     }

src/Illuminate/Events/functions.php

@@ -9,9 +9,8 @@
      * Create a new queued Closure event listener.
      *
      * @param  \Closure  $closure
-     * @return \Illuminate\Events\QueuedClosure
      */
-    function queueable(Closure $closure)
+    function queueable(Closure $closure): QueuedClosure
     {
         return new QueuedClosure($closure);
     }

src/Illuminate/Filesystem/functions.php

@@ -8,9 +8,8 @@
      *
      * @param  string|null  $basePath
      * @param  string  ...$paths
-     * @return string
      */
-    function join_paths($basePath, ...$paths)
+    function join_paths($basePath, ...$paths): string
     {
         foreach ($paths as $index => $path) {
             if (empty($path) && $path !== '0') {