Conditionally use pcntl extension in inertia:start-ssr command (#492)

* Add pcntl to requirements

* Move ext-pcntl to suggest and add check to StartSsr command

* Tweak `ext-pcntl` suggestion message

* Update `inertia:start-ssr` command to only use `pcntl` when it's available

Co-authored-by: Jonathan Reinink <[email protected]>

Author: RobertBoes

composer.json

@@ -35,6 +35,9 @@
         "mockery/mockery": "^1.3.3",
         "phpunit/phpunit": "^8.0|^9.5.8"
     },
+    "suggest": {
+        "ext-pcntl": "Recommended when running the Inertia SSR server via the `inertia:start-ssr` artisan command."
+    },
     "extra": {
         "laravel": {
             "providers": [

src/Commands/StartSsr.php

@@ -56,13 +56,15 @@ public function handle(): int
         $process->setTimeout(null);
         $process->start();
 
-        $stop = function () use ($process) {
-            $process->stop();
-        };
-        pcntl_async_signals(true);
-        pcntl_signal(SIGINT, $stop);
-        pcntl_signal(SIGQUIT, $stop);
-        pcntl_signal(SIGTERM, $stop);
+        if (extension_loaded('pcntl')) {
+            $stop = function () use ($process) {
+                $process->stop();
+            };
+            pcntl_async_signals(true);
+            pcntl_signal(SIGINT, $stop);
+            pcntl_signal(SIGQUIT, $stop);
+            pcntl_signal(SIGTERM, $stop);
+        }
 
         foreach ($process as $type => $data) {
             if ($process::OUT === $type) {