checkout-sdk-js

The checkout-sdk-js is a JavaScript SDK by BigCommerce that provides developers with a programmatic interface to customize and extend the checkout experience on BigCommerce stores. It is designed for front-end developers and merchants building headless or custom storefronts, offering fine-grained control over checkout flows, payment integrations, and address validation. This project is interesting because it enables deep, flexible customization of a critical ecommerce conversion point without requiring a full platform migration.