#7 Only include existing assets into gulp file and always run gulp, not only during update

src/Handler.php

@@ -132,14 +132,16 @@ class Handler
         ],
       ], $extra['theme-d8-sass']);
 
+      $fs = new Filesystem();
+
       $to = $this->buildInstallationPath($this->options['project_name']);
       foreach ($this->options['bower_assets']['fonts'] as $key => $def) {
         $package = $this->getPackage('bower-asset/' . $key);
-        if (!$package) {
+        $from = $package ? $this->getInstallationManager()->getInstallPath($package) : NULL;
+        if (!$package || !$fs->exists($from)) {
           unset($this->options['bower_assets']['fonts'][$key]);
         }
         else {
-          $from = $this->getInstallationManager()->getInstallPath($package);
           $converter = new Converter($from, $to);
           $this->options['bower_assets']['fonts'][$key]['src'] = $converter->convert($def['src']);
         }
@@ -148,14 +150,14 @@ class Handler
       $dependencies = [];
       foreach ($this->options['bower_assets']['sass'] as $key => $def) {
         $package = $this->getPackage('bower-asset/' . $key);
-        if (!$package) {
+        $from = $package ? $this->getInstallationManager()->getInstallPath($package) : NULL;
+        if (!$package || !$fs->exists($from)) {
           unset($this->options['bower_assets']['sass'][$key]);
         }
         else {
           if (!isset($def['version'])) {
             $def['version'] = 'latest';
           }
-          $from = $this->getInstallationManager()->getInstallPath($package);
           $converter = new Converter($from, $to);
           $this->options['bower_assets']['sass'][$key]['src'] = $converter->convert($def['src']);
           $dependencies[] = '"' . $key . '": "' . $def['version'] . '"';
@@ -371,14 +373,12 @@ class Handler
       }
     }
 
-    if ($update) {
-      // Run Gulp
-      $args = ['default'];
-      if (!$event->isDevMode()) {
-        $args[] = '--env production';
-      }
-      $this->gulp(implode(' ', $args));
+    // Run Gulp
+    $args = ['default'];
+    if (!$event->isDevMode()) {
+      $args[] = '--env production';
     }
+    $this->gulp(implode(' ', $args));
 
     // Restore current directory
     chdir($currentDir);