newsupernova/vendor/magento/module-ui/etc/adminhtml/system.xml

<?xml version="1.0"?>
<!--
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */
-->
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:module:Magento_Config:etc/system_file.xsd">
    <system>
        <section id="dev">
            <group id="js">
                <field id="session_storage_logging" translate="label comment" type="select" sortOrder="100" showInDefault="1" showInWebsite="0" showInStore="0" canRestore="1">
                    <label>Log JS Errors to Session Storage</label>
                    <source_model>Magento\Config\Model\Config\Source\Yesno</source_model>
                    <comment>If enabled, can be used by functional tests for extended reporting</comment>
                </field>
                <field id="session_storage_key" translate="label comment" type="text" sortOrder="110" showInDefault="1" showInWebsite="0" showInStore="0" canRestore="1">
                    <label>Log JS Errors to Session Storage Key</label>
                    <comment>Use this key to retrieve collected js errors</comment>
                </field>
            </group>
        </section>
    </system>
</config>