woocommerce/docs/extensibility-in-blocks/README.md

category_title	category_slug	post_title
Extensibility in Blocks	extensibility-in-blocks	Extensibility in blocks

These documents are all dealing with extensibility in the various WooCommerce Blocks.

Imports and dependency extration

The documentation in this section will use window globals in code examples, for example:

const { registerCheckoutFilters } = window.wc.blocksCheckout;

However, if you're using @woocommerce/dependency-extraction-webpack-plugin for enhanced dependency management you can instead use ES module syntax:

import { registerCheckoutFilters } from '@woocommerce/blocks-checkout';

See https://www.npmjs.com/package/@woocommerce/dependency-extraction-webpack-plugin for more information.

Hooks (actions and filters)

Document	Description
Actions	Documentation covering action hooks on the server side.
Filters	Documentation covering filter hooks on the server side.
Migrated Hooks	Documentation covering the migrated WooCommerce core hooks.

REST API

Document	Description
Exposing your data in the Store API.	Explains how you can add additional data to Store API endpoints.
Available endpoints to extend with ExtendSchema	A list of all available endpoints to extend.
Available Formatters	Available Formatters to format data for use in the Store API.
Updating the cart with the Store API	Update the server-side cart following an action from the front-end.

Checkout Payment Methods

Document	Description
Checkout Flow and Events	All about the checkout flow in the checkout block and the various emitted events that can be subscribed to.
Payment Method Integration	Information about implementing payment methods.
Filtering Payment Methods	Information about filtering the payment methods available in the Checkout Block.

Checkout Block

In addition to the reference material below, please see the block-checkout package documentation which is used to extend checkout with Filters, Slot Fills, and Inner Blocks.

Document	Description
How the Checkout Block processes an order	The detailed inner workings of the Checkout Flow.
IntegrationInterface	The IntegrationInterface class and how to use it to register scripts, styles, and data with WooCommerce Blocks.
Available Filters	All about the filters that you may use to change values of certain elements of WooCommerce Blocks.
Slots and Fills	Explains Slot Fills and how to use them to render your own components in Cart and Checkout.
Available Slot Fills	Available Slots that you can use and their positions in Cart and Checkout.
DOM Events	A list of DOM Events used by some blocks to communicate between them and with other parts of WooCommerce.
Filter Registry	The filter registry allows callbacks to be registered to manipulate certain values.
Additional Checkout Fields	The filter registry allows callbacks to be registered to manipulate certain values.