* Hook up checkout validation with context
* Make sure hasValidationErrors is up to date in onCheckoutProcessing
* Move validation check inside CheckoutProcessor's processCheckout
* Make sure all checkout form fields have a unique ID
* Don't clear checkout context errors in shipping context
* Move CheckoutProcessor to the top so scrollToTop works
* Do not disable Place Order Button if there are errors
* Split checkValidation and processCheckout in Checkout Provider
* Refactor event emitter to use Maps
* Save payment method errors to validation context
* Show an notice when a payment method has an error
* Make sure JS errors during payment are displayed
* Remove error notice when payment method doesn't return an error anymore
* Make sure payment methods know if shipping and billing addresses are the same
* Make sure checkout is only processed if payment methods didn't fail
* Make sure state input also has an id
* Clear input and select errors on unmount
* Pass id to CountryInput and StateInput
* Fix function name
* Add missing default context values
* Move onCheckoutCompleteError effect to CheckoutBlock
* Remove conditional from shipping setHasError
* Make Product Price component accessible
* Render checkout form step number before the content instead of after
* Announce changes in the Shipping Rates Control results
* Render product name before product price in the Checkout sidebar
* Verify error element id exists before using it in describedBy
* Avoid reading 'Choose a shipping method' if no shipping methods are available
* Hide product image from screen readers if there is no alt text and make link not focusable
* Move Checkout block buttons below the sidebar
* Simplify selector
* Remove ternary to make code easier to understand
* Fix rebase issue
* Fix step number not visible for payment methods
* Only update grid default attributes on WP >= 5.3
* Use @wordpress/compose from external in Reviews sort-select
* Import withInstanceId from external only on legacy builds
* FallbackModule: add extensions to paths if it's missing
* Use path package to extract path extension
* Make all components import from the base withInstanceId HOC
* Add Checkout form validation
* Add back validation when filling the address without having set a country
* Split TextInput and Select so they can be used with or without validation
* Cleanup
* Only display the missing country error if city, state or postcode are entered
* Fix CSS specificity conflict
* Remove unnecessary semicolon
* Rename areThereValidationErrors to hasValidationErrors
Albert Juhé Lluveras