diff --git a/lib/composer/autoload_classmap.php b/lib/composer/autoload_classmap.php
index b1e6f62f6..6a978b3ea 100644
--- a/lib/composer/autoload_classmap.php
+++ b/lib/composer/autoload_classmap.php
@@ -419,6 +419,7 @@ return array(
     'Combodo\\iTop\\Core\\Trigger\\Enum\\SubscriptionPolicy' => $baseDir . '/sources/Core/Trigger/Enum/SubscriptionPolicy.php',
     'Combodo\\iTop\\Dependencies\\AbstractHook' => $baseDir . '/sources/Dependencies/AbstractHook.php',
     'Combodo\\iTop\\Dependencies\\Composer\\iTopComposer' => $baseDir . '/sources/Dependencies/Composer/iTopComposer.php',
+    'Combodo\\iTop\\Dependencies\\NPM\\iTopNPM' => $baseDir . '/sources/Dependencies/NPM/iTopNPM.php',
     'Combodo\\iTop\\DesignDocument' => $baseDir . '/core/designdocument.class.inc.php',
     'Combodo\\iTop\\DesignElement' => $baseDir . '/core/designdocument.class.inc.php',
     'Combodo\\iTop\\Form\\Field\\AbstractSimpleField' => $baseDir . '/sources/Form/Field/AbstractSimpleField.php',
diff --git a/lib/composer/autoload_static.php b/lib/composer/autoload_static.php
index 5422a3f3f..d4cd1ceca 100644
--- a/lib/composer/autoload_static.php
+++ b/lib/composer/autoload_static.php
@@ -794,6 +794,7 @@ class ComposerStaticInit7f81b4a2a468a061c306af5e447a9a9f
         'Combodo\\iTop\\Core\\Trigger\\Enum\\SubscriptionPolicy' => __DIR__ . '/../..' . '/sources/Core/Trigger/Enum/SubscriptionPolicy.php',
         'Combodo\\iTop\\Dependencies\\AbstractHook' => __DIR__ . '/../..' . '/sources/Dependencies/AbstractHook.php',
         'Combodo\\iTop\\Dependencies\\Composer\\iTopComposer' => __DIR__ . '/../..' . '/sources/Dependencies/Composer/iTopComposer.php',
+        'Combodo\\iTop\\Dependencies\\NPM\\iTopNPM' => __DIR__ . '/../..' . '/sources/Dependencies/NPM/iTopNPM.php',
         'Combodo\\iTop\\DesignDocument' => __DIR__ . '/../..' . '/core/designdocument.class.inc.php',
         'Combodo\\iTop\\DesignElement' => __DIR__ . '/../..' . '/core/designdocument.class.inc.php',
         'Combodo\\iTop\\Form\\Field\\AbstractSimpleField' => __DIR__ . '/../..' . '/sources/Form/Field/AbstractSimpleField.php',
diff --git a/lib/composer/installed.php b/lib/composer/installed.php
index 54fa11a53..36ca1d988 100644
--- a/lib/composer/installed.php
+++ b/lib/composer/installed.php
@@ -3,7 +3,7 @@
         'name' => 'combodo/itop',
         'pretty_version' => 'dev-develop',
         'version' => 'dev-develop',
-        'reference' => '0c3e839381fb70ad7856576de4fc1da17278dfa2',
+        'reference' => '26e588c1c3f3c4c30b0da3f14e0c4726d49d659e',
         'type' => 'project',
         'install_path' => __DIR__ . '/../../',
         'aliases' => array(),
@@ -22,7 +22,7 @@
         'combodo/itop' => array(
             'pretty_version' => 'dev-develop',
             'version' => 'dev-develop',
-            'reference' => '0c3e839381fb70ad7856576de4fc1da17278dfa2',
+            'reference' => '26e588c1c3f3c4c30b0da3f14e0c4726d49d659e',
             'type' => 'project',
             'install_path' => __DIR__ . '/../../',
             'aliases' => array(),
diff --git a/package.json b/package.json
index e74c4bc74..9f60a79c8 100644
--- a/package.json
+++ b/package.json
@@ -26,5 +26,9 @@
     "showdown": "^2.0.0",
     "tippy.js": "^6.2.5",
     "toastify-js": "^1.12.0"
+  },
+  "scripts": {
+    "postinstall": "php .make/dependencies/rmUnnecessaryFolders.php --manager npm",
+    "postupdate": "php .make/dependencies/rmUnnecessaryFolders.php --manager npm"
   }
 }
diff --git a/sources/Dependencies/NPM/iTopNPM.php b/sources/Dependencies/NPM/iTopNPM.php
new file mode 100644
index 000000000..1485a5b70
--- /dev/null
+++ b/sources/Dependencies/NPM/iTopNPM.php
@@ -0,0 +1,73 @@
+<?php
+/**
+ * Copyright (C) 2010-2023 Combodo SARL
+ *
+ *   This file is part of iTop.
+ *
+ *   iTop is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU Affero General Public License as published by
+ *   the Free Software Foundation, either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   iTop is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU Affero General Public License for more details.
+ *
+ *   You should have received a copy of the GNU Affero General Public License
+ *   along with iTop. If not, see <http: *www.gnu.org/licenses/>
+ *
+ */
+
+namespace  Combodo\iTop\Dependencies\NPM;
+
+use Combodo\iTop\Dependencies\AbstractHook;
+
+class iTopNPM extends AbstractHook
+{
+	/**
+	 * @inheritDoc
+	 */
+	protected function GetDependenciesRootFolderAbsPath(): string
+	{
+		return $this->GetApprootPathWithSlashes() . "node_modules";
+	}
+
+	/**
+	 * @inheritDoc
+	 */
+	public function ListAllowedQuestionnableFoldersAbsPaths(): array
+	{
+		$APPROOT_WITH_SLASHES = $this->GetDependenciesRootFolderAbsPath();
+		return [
+			// jQuery Sizzle used by jQuery
+			$APPROOT_WITH_SLASHES . '/jquery/external',
+		];
+	}
+
+	/**
+	 * @inheritDoc
+	 */
+	public function ListDeniedQuestionnableFolderAbsPaths(): array
+	{
+		$APPROOT_WITH_SLASHES = $this->GetDependenciesRootFolderAbsPath();
+		return [
+			$APPROOT_WITH_SLASHES . '/c3/htdocs',
+			$APPROOT_WITH_SLASHES . '/clipboard/demo',
+			$APPROOT_WITH_SLASHES . '/clipboard/test',
+			$APPROOT_WITH_SLASHES . '/delegate/demo',
+			$APPROOT_WITH_SLASHES . '/delegate/test',
+			$APPROOT_WITH_SLASHES . '/good-listener/demo',
+			$APPROOT_WITH_SLASHES . '/good-listener/test',
+			$APPROOT_WITH_SLASHES . '/jquery-migrate/test',
+			$APPROOT_WITH_SLASHES . '/jquery-ui/external',
+			$APPROOT_WITH_SLASHES . '/jquery-ui-dist/external',
+			$APPROOT_WITH_SLASHES . '/mousetrap/plugins/record/tests',
+			$APPROOT_WITH_SLASHES . '/mousetrap/tests',
+			$APPROOT_WITH_SLASHES . '/select/demo',
+			$APPROOT_WITH_SLASHES . '/select/test',
+			$APPROOT_WITH_SLASHES . '/selectize-plugin-a11y/examples',
+			$APPROOT_WITH_SLASHES . '/tiny-emitter/test',
+		];
+	}
+}
\ No newline at end of file
diff --git a/tests/php-unit-tests/unitary-tests/sources/Dependencies/NPM/iTopNPMTest.php b/tests/php-unit-tests/unitary-tests/sources/Dependencies/NPM/iTopNPMTest.php
new file mode 100644
index 000000000..a10aa38d9
--- /dev/null
+++ b/tests/php-unit-tests/unitary-tests/sources/Dependencies/NPM/iTopNPMTest.php
@@ -0,0 +1,59 @@
+<?php
+
+namespace Combodo\iTop\Test\UnitTest\Dependencies\NPM;
+
+use Combodo\iTop\Dependencies\NPM\iTopNPM;
+use Combodo\iTop\Test\UnitTest\ItopTestCase;
+
+/**
+ * Copyright (C) 2010-2023 Combodo SARL
+ *
+ *   This file is part of iTop.
+ *
+ *   iTop is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU Affero General Public License as published by
+ *   the Free Software Foundation, either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   iTop is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU Affero General Public License for more details.
+ *
+ *   You should have received a copy of the GNU Affero General Public License
+ *   along with iTop. If not, see <http: *www.gnu.org/licenses/>
+ *
+ */
+class iTopNPMTest extends ItopTestCase
+{
+
+	protected function setUp(): void
+	{
+		parent::setUp();
+		clearstatcache();
+	}
+
+	/**
+	 * This is NOT a unit test, this test the iTop instance running the test ...
+	 */
+	public function testAllFoldersCovered()
+	{
+		$oDependenciesHandler = new iTopNPM();
+		$aAllowedAndDeniedDirs = array_merge(
+			$oDependenciesHandler->ListAllowedQuestionnableFoldersAbsPaths(),
+			$oDependenciesHandler->ListDeniedQuestionnableFolderAbsPaths()
+		);
+
+		$aExistingDirs = $oDependenciesHandler->ListAllQuestionnableFoldersAbsPaths();
+
+		$aMissing = array_diff($aExistingDirs, $aAllowedAndDeniedDirs);
+		$aExtra = array_diff($aAllowedAndDeniedDirs, $aExistingDirs);
+
+		$this->assertEmpty(
+			$aMissing,
+			'Test dirs exists in /node_modules !'."\n"
+			.'  They must be declared either in the allowed or denied list in '.iTopNPM::class." (see N°2651).\n"
+			.'  List of dirs:'."\n".var_export($aMissing, true)
+		);
+	}
+}