How to Pass Custom Data in Checkout in Magento 2

To add custom data to the checkout process in Magento 2, you should utilize the `window.checkoutConfig` object efficiently. This will enhance the functionality and personalization of your store, tailoring your checkout experience to meet your specific customer and business needs.

Step-by-Step Instructions to Add Custom Data

To achieve successful integration of customer data, follow these steps on how to Magento 2 add customer data to window.checkoutConfig:

Step 1: Create a Custom Module:

Start by creating a custom module, if you don't already have one. This module will allow you to extend Magento 2 without modifying the core files directly.

Directory Structure: Create the directories for your module under `app/code/Vendor/ModuleName` and include essential files like `registration.php`, `etc/module.xml`, and `etc/frontend/di.xml`.

Step 2: Customize the Checkout Config:

To modify `window.checkoutConfig`, you'll need to create a mixin for the JavaScript component that initializes it.

Create a requirejs-config.js File: This file will be used to declare your mixin. Place it under `view/frontend/requirejs-config.js` in your module directory.