wip

src/Plugins/Tia/JsModuleGraph.php

@@ -4,6 +4,7 @@ declare(strict_types=1);
 
 namespace Pest\Plugins\Tia;
 
+use Pest\Support\Cpu;
 use Symfony\Component\Process\ExecutableFinder;
 use Symfony\Component\Process\Process;
 
@@ -166,7 +167,7 @@ final class JsModuleGraph
             return null;
         }
 
-        $env = [];
+        $env = ['TIA_VITE_CONCURRENCY' => (string) max(4, min(32, Cpu::cores() * 2))];
         foreach (['resources/js/Pages', 'resources/js/pages'] as $candidate) {
             if (is_dir($projectRoot.DIRECTORY_SEPARATOR.$candidate)) {
                 $env['TIA_VITE_PAGES_DIR'] = $candidate;

src/Support/Cpu.php

@@ -0,0 +1,18 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Pest\Support;
+
+use Fidry\CpuCoreCounter\CpuCoreCounter;
+
+/**
+ * @internal
+ */
+final class Cpu
+{
+    public static function cores(int $fallback = 4): int
+    {
+        return (new CpuCoreCounter)->getCountWithFallback($fallback);
+    }
+}