include a cache resolver

config/mix.php

@@ -4,6 +4,10 @@
     'home' => base_path(),
     'vendor_dir' => env('MIX_VENDOR_DIR', 'vendor'),
     'use_manifest' => env('MIX_USE_MANIFEST', true),
+    'cache' => [
+        'enabled' => env('MIX_CACHE_ENABLED', true),
+        'key' => env('MIX_CACHE_KEY', basename(base_path())),
+    ],
     'driver' => [
         'cdn' => [
             'include_vendor' => env('MIX_CDN_INCLUDE_VENDOR', false),

src/Mix.php

@@ -4,6 +4,7 @@
 
 use Illuminate\Pipeline\Pipeline;
 use Illuminate\Support\HtmlString;
+use TorMorten\Mix\Resolvers\ResolveCache;
 use TorMorten\Mix\Resolvers\ResolveCdn;
 use TorMorten\Mix\Resolvers\ResolveHmr;
 use TorMorten\Mix\Resolvers\ResolveLocal;
@@ -29,6 +30,7 @@ public function handle($filename, $package, $forceLocal = false)
         $pipes = [
             ResolveHmr::class,
             ResolveLocal::class,
+            ResolveCache::class,
             ResolveCdn::class,
         ];
 

src/Resolvers/ResolveCache.php

@@ -0,0 +1,33 @@
+<?php
+
+namespace TorMorten\Mix\Resolvers;
+
+use Illuminate\Support\Collection;
+use Illuminate\Support\Facades\Cache;
+use Illuminate\Support\Facades\Config;
+use Illuminate\Support\Facades\Request;
+use TorMorten\Mix\Mix;
+use TorMorten\Mix\Support\Packages;
+
+class ResolveCache
+{
+    public function handle(array $params, \Closure $next)
+    {
+        if (config('mix.cache.enabled', true)) {
+            if (Cache::has($this->cacheKey($params['package']))) {
+                return Cache::get($this->cacheKey($params['package']));
+            }
+        }
+        return $next($params);
+    }
+
+    public function cacheKey($package)
+    {
+        return join(':', [
+            'mix',
+            config('mix.cache.key'),
+            md5($package)
+        ]);
+    }
+
+}

src/Resolvers/ResolveCdn.php

@@ -18,7 +18,11 @@ public function handle(array $params, \Closure $next)
         if (Config::get('mix.driver.cdn.url')) {
             $packages = $this->getInstalledPackages();
             if (($packages = $packages->where('name', $params['package']))->isNotEmpty()) {
-                return $this->getMixUrl(app()->environment('local', 'testing') ? 'develop' : $packages->first()['version']);
+                $url = $this->getMixUrl(app()->environment('local', 'testing') ? 'develop' : $packages->first()['version']);
+                if (config('mix.cache.enabled', true)) {
+                    Cache::put(resolve(ResolveCache::class)->cacheKey($params['package']), $url);
+                }
+                return $url;
             }
         }