The first step is to add the following code in Vendor/Module/etc/frontend/di.xml of your custom module –
<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
<type name="Magento\Checkout\Model\CompositeConfigProvider">
<arguments>
<argument name="configProviders" xsi:type="array">
<item name="additional_provider" xsi:type="object">Armmage\test\Model\AdditionalConfigVars</item>
</argument>
</arguments>
</type>
</config>
After this, we will create AdditionalConfigVars.php in Vendor/Module/Model and add the following code to it –
<?php
namespace Armmage\Test\Model;
use \Magento\Checkout\Model\ConfigProviderInterface
class AdditionalConfigVars implements ConfigProviderInterface
{
public function getConfig()
{
$additionalVariables['test_var'] = 'Test Var';
return $additionalVariables;
}
}
Now all you need to do is flush the Magento cache and check ‘window.checkoutConfig.test_var’ in your js on the checkout page. It will return ‘Test Var’.
This is all for now.
Basic module create --> link
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