Convert validation context to data store (https://github.com/woocommerce/woocommerce-blocks/pull/6402)

* Add validation reducers, actions, and action types

* Add selector for getValidationErrors

* Export store key and register store

* Export validation store key

* Move TextInput files to checkout package

* Export ValidatedTextInput from blocks-checkout package

* Update imports of ValidatedTextInput to reflect new location

* Use the validation wp-data store for showing error messages

* Export getValidationError in checkout package

* Move validation store to checkout package

* Move ValidationInputError to blocks-checkout package

* Only export "exposedSelectors" from validation

* Convert validation context to data store

* Fixed linting error

* Fixed linting error

* Change the validation selectors to return a function

* Convert reducer and selectors to TS

* Remove superfluous comments and improve test titles

* Test to ensure visible errors remain visible

* Make test for hasValidationErrors more robust

* Augment the wp-data module to include our selectors and actions

* Removed unused `exposedSelectors` variable

* Remove TS error because of `instanceId` on props

* Remove unnecessary as const

* Use function returned by getValidationError

* Use correct selector/action names now context has been decoupled

* hide validation error when input value changes

* Add correct aria-describedBy now we can get error id from store

* Clear validation error from store when component unmounts

* Clear validation error if input is valid

* convert ValidationInputError to TS and get correct id/error from store

* Ensure checkout block doesn't break when there are no errors

* Get validation data from the store instead of context

* Update country input to remove validation context

* Move validation store out of checkout package

* Move TextInput and ValidationInputError back out of the checkout package

* Remove duplicate internal styles comment

* Remove exports that no longer exist

* Get validation store key from block-data

* Make attribute-select-control use validation data store

* Export FieldValidationStatus type

* Make combobox use validation store not context

* Make Address use validation store not context

* Make Address use validation store not context

* Use hasValidationErrors selector as a function in shipping calculator

* Remove validation context from coupon story

* Import VALIDATION_STORE_KEY from correct location

* Stop coupon story from erroring

* Update useStoreCartCoupons to use validation store not context

* Make TotalsCoupon use validation store instead of context

* Make AddToCartFormContext use validation store not context

* Remove ValidationContext

* Import FieldValidationStatus from correct location

* Import ValidatedTextInput and ValidatedTextInput from correct location

* Remove ValidationContextProvider

* Update components to use validation store not context

* Update useValidation to use the data store

* Replace the validation context in checkout-events file

* Use the re-mapped path for the store key import

* Use "register" instead of the deprecated "registerStore"

* Fix import error of the "FieldValidationStatus" type

* Use TS instead of React's "PropTypes"

* Fix the type of "ValidationInputError" in the "payment-method-interface"

* Fix error not showing on the first place order click bug

We were mutating the state in the reducer, which prevented re-rendering
on state change

* Fix state mutation issue in the Validation reducer

Co-authored-by: Thomas Roberts <thomas.roberts@automattic.com>
Co-authored-by: Saad Tarhi <saad.trh@gmail.com>

plugins/woocommerce-blocks/assets/js/atomic/blocks/product-elements/add-to-cart/product-types/variable/variation-attributes/attribute-select-control.js

@@ -6,10 +6,9 @@ import { decodeEntities } from '@wordpress/html-entities';
 import { SelectControl } from 'wordpress-components';
 import { useEffect } from 'react';
 import classnames from 'classnames';
-import {
+import { ValidationInputError } from '@woocommerce/base-components/validation-input-error';
-	ValidationInputError,
+import { VALIDATION_STORE_KEY } from '@woocommerce/block-data';
-	useValidationContext,
+import { useDispatch, useSelect } from '@wordpress/data';
-} from '@woocommerce/base-context';
 
 // Default option for select boxes.
 const selectAnOption = {
@@ -32,8 +31,16 @@ const AttributeSelectControl = ( {
 		'woo-gutenberg-products-block'
 	),
 } ) => {
-	const { getValidationError, setValidationErrors, clearValidationError } =
+	const { setValidationErrors, clearValidationError } = useDispatch(
-		useValidationContext();
+		VALIDATION_STORE_KEY
+	);
+
+	const { getValidationError } = useSelect( ( select ) => {
+		const store = select( VALIDATION_STORE_KEY );
+		return {
+			getValidationError: store.getValidationError(),
+		};
+	} );
 	const errorId = attributeName;
 	const error = getValidationError( errorId ) || {};
 

plugins/woocommerce-blocks/assets/js/base/components/cart-checkout/address-form/address-form.tsx

@@ -10,7 +10,6 @@ import {
 	BillingStateInput,
 	ShippingStateInput,
 } from '@woocommerce/base-components/state-input';
-import { useValidationContext } from '@woocommerce/base-context';
 import { useEffect, useMemo } from '@wordpress/element';
 import { __ } from '@wordpress/i18n';
 import { withInstanceId } from '@wordpress/compose';
@@ -22,6 +21,11 @@ import {
 	defaultAddressFields,
 	EnteredAddress,
 } from '@woocommerce/settings';
+import { useSelect, useDispatch } from '@wordpress/data';
+import {
+	VALIDATION_STORE_KEY,
+	FieldValidationStatus,
+} from '@woocommerce/block-data';
 
 /**
  * Internal dependencies
@@ -32,7 +36,9 @@ import prepareAddressFields from './prepare-address-fields';
 // values without having set the country first, show an error.
 const validateShippingCountry = (
 	values: EnteredAddress,
-	setValidationErrors: ( errors: Record< string, unknown > ) => void,
+	setValidationErrors: (
+		errors: Record< string, FieldValidationStatus >
+	) => void,
 	clearValidationError: ( error: string ) => void,
 	hasValidationError: boolean
 ): void => {
@@ -87,8 +93,14 @@ const AddressForm = ( {
 	type = 'shipping',
 	values,
 }: AddressFormProps ): JSX.Element => {
-	const { getValidationError, setValidationErrors, clearValidationError } =
+	const { setValidationErrors, clearValidationError } = useDispatch(
-		useValidationContext();
+		VALIDATION_STORE_KEY
+	);
+
+	const getValidationError = useSelect( ( select ) => {
+		const store = select( VALIDATION_STORE_KEY );
+		return store.getValidationError();
+	} );
 
 	const currentFields = useShallowEqual( fields );
 

plugins/woocommerce-blocks/assets/js/base/components/cart-checkout/shipping-calculator/address.tsx

@@ -5,8 +5,9 @@ import { __ } from '@wordpress/i18n';
 import Button from '@woocommerce/base-components/button';
 import { useState } from '@wordpress/element';
 import isShallowEqual from '@wordpress/is-shallow-equal';
-import { useValidationContext } from '@woocommerce/base-context';
 import type { EnteredAddress, AddressFields } from '@woocommerce/settings';
+import { VALIDATION_STORE_KEY } from '@woocommerce/block-data';
+import { useDispatch, useSelect } from '@wordpress/data';
 
 /**
  * Internal dependencies
@@ -25,12 +26,18 @@ const ShippingCalculatorAddress = ( {
 	addressFields,
 }: ShippingCalculatorAddressProps ): JSX.Element => {
 	const [ address, setAddress ] = useState( initialAddress );
-	const { hasValidationErrors, showAllValidationErrors } =
+	const { showAllValidationErrors } = useDispatch( VALIDATION_STORE_KEY );
-		useValidationContext();
+
+	const { hasValidationErrors } = useSelect( ( select ) => {
+		const store = select( VALIDATION_STORE_KEY );
+		return {
+			hasValidationErrors: store.hasValidationErrors,
+		};
+	} );
 
 	const validateSubmit = () => {
 		showAllValidationErrors();
-		return ! hasValidationErrors;
+		return ! hasValidationErrors();
 	};
 
 	return (

plugins/woocommerce-blocks/assets/js/base/components/cart-checkout/totals/coupon/index.tsx

@@ -4,15 +4,14 @@
 import { __ } from '@wordpress/i18n';
 import { useState, useEffect, useRef } from '@wordpress/element';
 import Button from '@woocommerce/base-components/button';
-import { ValidatedTextInput } from '@woocommerce/base-components/text-input';
+import { Panel } from '@woocommerce/blocks-checkout';
 import Label from '@woocommerce/base-components/label';
 import LoadingMask from '@woocommerce/base-components/loading-mask';
 import { withInstanceId } from '@wordpress/compose';
-import {
+import { ValidatedTextInput } from '@woocommerce/base-components/text-input';
-	ValidationInputError,
+import ValidationInputError from '@woocommerce/base-components/validation-input-error';
-	useValidationContext,
+import { useSelect } from '@wordpress/data';
-} from '@woocommerce/base-context';
+import { VALIDATION_STORE_KEY } from '@woocommerce/block-data';
-import { Panel } from '@woocommerce/blocks-checkout';
 
 /**
  * Internal dependencies
@@ -46,7 +45,16 @@ export const TotalsCoupon = ( {
 }: TotalsCouponProps ): JSX.Element => {
 	const [ couponValue, setCouponValue ] = useState( '' );
 	const currentIsLoading = useRef( false );
-	const { getValidationError, getValidationErrorId } = useValidationContext();
+	const { getValidationError, getValidationErrorId } = useSelect(
+		( select ) => {
+			const store = select( VALIDATION_STORE_KEY );
+			return {
+				getValidationError: store.getValidationError(),
+				getValidationErrorId: store.getValidationErrorId(),
+			};
+		}
+	);
+
 	const validationError = getValidationError( 'coupon' );
 
 	useEffect( () => {

plugins/woocommerce-blocks/assets/js/base/components/cart-checkout/totals/coupon/stories/index.tsx

@@ -3,11 +3,9 @@
  */
 import { useArgs } from '@storybook/client-api';
 import { Story, Meta } from '@storybook/react';
-import {
-	useValidationContext,
-	ValidationContextProvider,
-} from '@woocommerce/base-context';
 import { INTERACTION_TIMEOUT } from '@woocommerce/storybook-controls';
+import { useDispatch } from '@wordpress/data';
+import { VALIDATION_STORE_KEY } from '@woocommerce/block-data';
 
 /**
  * Internal dependencies
@@ -52,7 +50,7 @@ LoadingState.args = {
 };
 
 export const ErrorState: Story< TotalsCouponProps > = ( args ) => {
-	const { setValidationErrors } = useValidationContext();
+	const { setValidationErrors } = useDispatch( VALIDATION_STORE_KEY );
 
 	setValidationErrors( { coupon: INVALID_COUPON_ERROR } );
 
@@ -61,10 +59,6 @@ export const ErrorState: Story< TotalsCouponProps > = ( args ) => {
 
 ErrorState.decorators = [
 	( StoryComponent ) => {
-		return (
+		return <StoryComponent />;
-			<ValidationContextProvider>
-				<StoryComponent />
-			</ValidationContextProvider>
-		);
 	},
 ];

plugins/woocommerce-blocks/assets/js/base/components/combobox/index.tsx

@@ -6,11 +6,10 @@ import { __ } from '@wordpress/i18n';
 import { useEffect, useRef } from '@wordpress/element';
 import { withInstanceId } from '@wordpress/compose';
 import { ComboboxControl } from 'wordpress-components';
-import {
+import { ValidationInputError } from '@woocommerce/base-components/validation-input-error';
-	ValidationInputError,
-	useValidationContext,
-} from '@woocommerce/base-context';
 import { isObject } from '@woocommerce/types';
+import { useDispatch, useSelect } from '@wordpress/data';
+import { VALIDATION_STORE_KEY } from '@woocommerce/block-data';
 
 /**
  * Internal dependencies
@@ -55,8 +54,13 @@ const Combobox = ( {
 	instanceId = '0',
 	autoComplete = 'off',
 }: ComboboxProps ): JSX.Element => {
-	const { getValidationError, setValidationErrors, clearValidationError } =
+	const { setValidationErrors, clearValidationError } = useDispatch(
-		useValidationContext();
+		VALIDATION_STORE_KEY
+	);
+	const getValidationError = useSelect( ( select ) => {
+		const store = select( VALIDATION_STORE_KEY );
+		return store.getValidationError();
+	} );
 
 	const controlRef = useRef< HTMLDivElement >( null );
 	const controlId = id || 'control-' + instanceId;

plugins/woocommerce-blocks/assets/js/base/components/country-input/stories/index.tsx

@@ -2,11 +2,9 @@
  * External dependencies
  */
 import { Story, Meta } from '@storybook/react';
-import {
+import { useDispatch } from '@wordpress/data';
-	useValidationContext,
-	ValidationContextProvider,
-} from '@woocommerce/base-context';
 import { useState, useEffect } from '@wordpress/element';
+import { VALIDATION_STORE_KEY } from '@woocommerce/block-data';
 
 /**
  * Internal dependencies
@@ -31,21 +29,16 @@ export default {
 		options: { table: { disable: true } },
 		value: { control: false },
 	},
-	decorators: [
+	decorators: [ ( StoryComponent ) => <StoryComponent /> ],
-		( StoryComponent ) => (
-			<ValidationContextProvider>
-				<StoryComponent />
-			</ValidationContextProvider>
-		),
-	],
 } as Meta< CountryInputWithCountriesProps >;
 
 const Template: Story< CountryInputWithCountriesProps > = ( args ) => {
 	const [ selectedCountry, selectCountry ] = useState< CountryCode | '' >(
 		''
 	);
-	const { clearValidationError, showValidationError } =
+	const { clearValidationError, showValidationError } = useDispatch(
-		useValidationContext();
+		VALIDATION_STORE_KEY
+	);
 
 	useEffect( () => {
 		showValidationError( 'country' );

plugins/woocommerce-blocks/assets/js/base/components/state-input/state-input.tsx

@@ -5,11 +5,11 @@ import { __ } from '@wordpress/i18n';
 import { decodeEntities } from '@wordpress/html-entities';
 import { useCallback, useMemo, useEffect, useRef } from '@wordpress/element';
 import classnames from 'classnames';
+import { ValidatedTextInput } from '@woocommerce/base-components/text-input';
 
 /**
  * Internal dependencies
  */
-import { ValidatedTextInput } from '../text-input';
 import Combobox from '../combobox';
 import './style.scss';
 import type { StateInputWithStatesProps } from './StateInputProps';

plugins/woocommerce-blocks/assets/js/base/components/text-input/validated-text-input.tsx

@@ -4,33 +4,21 @@
 import { __ } from '@wordpress/i18n';
 import { useCallback, useRef, useEffect, useState } from 'react';
 import classnames from 'classnames';
-import {
-	ValidationInputError,
-	useValidationContext,
-} from '@woocommerce/base-context';
 import { withInstanceId } from '@wordpress/compose';
 import { isString } from '@woocommerce/types';
+import { dispatch, useSelect } from '@wordpress/data';
+import { VALIDATION_STORE_KEY } from '@woocommerce/block-data';
 
 /**
  * Internal dependencies
  */
 import TextInput from './text-input';
 import './style.scss';
+import { ValidationInputError } from '../validation-input-error';
 
-interface ValidatedTextInputPropsWithId {
+interface ValidatedTextInputProps {
-	instanceId?: string;
-	id: string;
-}
-
-interface ValidatedTextInputPropsWithInstanceId {
-	instanceId: string;
 	id?: string;
-}
+	instanceId: string;
-
-type ValidatedTextInputProps = (
-	| ValidatedTextInputPropsWithId
-	| ValidatedTextInputPropsWithInstanceId
- ) & {
 	className?: string;
 	ariaDescribedBy?: string;
 	errorId?: string;
@@ -39,7 +27,7 @@ type ValidatedTextInputProps = (
 	errorMessage?: string;
 	onChange: ( newValue: string ) => void;
 	value: string;
-};
+}
 
 const ValidatedTextInput = ( {
 	className,
@@ -53,20 +41,26 @@ const ValidatedTextInput = ( {
 	errorMessage: passedErrorMessage = '',
 	value = '',
 	...rest
-}: ValidatedTextInputProps ) => {
+}: ValidatedTextInputProps ): JSX.Element => {
 	const [ isPristine, setIsPristine ] = useState( true );
 	const inputRef = useRef< HTMLInputElement >( null );
-	const {
+
-		getValidationError,
+	const { setValidationErrors, hideValidationError, clearValidationError } =
-		hideValidationError,
+		dispatch( VALIDATION_STORE_KEY );
-		setValidationErrors,
-		clearValidationError,
-		getValidationErrorId,
-	} = useValidationContext();
 	const textInputId =
 		typeof id !== 'undefined' ? id : 'textinput-' + instanceId;
 	const errorIdString = errorId !== undefined ? errorId : textInputId;
 
+	const { getValidationError, getValidationErrorId } = useSelect(
+		( select ) => {
+			const store = select( VALIDATION_STORE_KEY );
+			return {
+				getValidationError: store.getValidationError(),
+				getValidationErrorId: store.getValidationErrorId(),
+			};
+		}
+	);
+
 	const validateInput = useCallback(
 		( errorsHidden = true ) => {
 			const inputObject = inputRef.current || null;
@@ -79,7 +73,7 @@ const ValidatedTextInput = ( {
 			if ( inputIsValid ) {
 				clearValidationError( errorIdString );
 			} else {
-				setValidationErrors( {
+				const validationErrors = {
 					[ errorIdString ]: {
 						message:
 							inputObject.validationMessage ||
@@ -89,7 +83,8 @@ const ValidatedTextInput = ( {
 							),
 						hidden: errorsHidden,
 					},
-				} );
+				};
+				setValidationErrors( validationErrors );
 			}
 		},
 		[ clearValidationError, errorIdString, setValidationErrors ]
@@ -129,17 +124,13 @@ const ValidatedTextInput = ( {
 		};
 	}, [ clearValidationError, errorIdString ] );
 
-	// @todo - When useValidationContext is converted to TypeScript, remove this cast and use the correct type.
+	const errorMessage = getValidationError( errorIdString );
-	const errorMessage = ( getValidationError( errorIdString ) || {} ) as {
-		message?: string;
-		hidden?: boolean;
-	};
 
 	if ( isString( passedErrorMessage ) && passedErrorMessage !== '' ) {
 		errorMessage.message = passedErrorMessage;
 	}
 
-	const hasError = errorMessage.message && ! errorMessage.hidden;
+	const hasError = errorMessage?.message && ! errorMessage?.hidden;
 	const describedBy =
 		showError && hasError && getValidationErrorId( errorIdString )
 			? getValidationErrorId( errorIdString )

plugins/woocommerce-blocks/assets/js/base/components/tsconfig.json

@@ -12,6 +12,7 @@
 		"../hocs",
 		"../../atomic/utils",
 		"../../atomic/blocks/component-init.js",
+		"../../data",
 		"../../shared/context"
 	],
 	"exclude": [ "**/test/**" ]

plugins/woocommerce-blocks/assets/js/base/components/validation-input-error/index.tsx

@@ -0,0 +1,50 @@
+/**
+ * External dependencies
+ */
+import { useSelect } from '@wordpress/data';
+import { VALIDATION_STORE_KEY } from '@woocommerce/block-data';
+
+/**
+ * Internal dependencies
+ */
+import './style.scss';
+
+interface ValidationInputErrorProps {
+	errorMessage?: string;
+	propertyName?: string;
+	elementId?: string;
+}
+
+export const ValidationInputError = ( {
+	errorMessage = '',
+	propertyName = '',
+	elementId = '',
+}: ValidationInputErrorProps ): JSX.Element | null => {
+	const { getValidationError, getValidationErrorId } = useSelect(
+		( select ) => {
+			const store = select( VALIDATION_STORE_KEY );
+			return {
+				getValidationError: store.getValidationError(),
+				getValidationErrorId: store.getValidationErrorId(),
+			};
+		}
+	);
+	const validationError = getValidationError( propertyName );
+
+	if ( ! errorMessage || typeof errorMessage !== 'string' ) {
+		const error = validationError || {};
+		if ( error.message && ! error.hidden ) {
+			errorMessage = error.message;
+		} else {
+			return null;
+		}
+	}
+
+	return (
+		<div className="wc-block-components-validation-error" role="alert">
+			<p id={ getValidationErrorId( elementId ) }>{ errorMessage }</p>
+		</div>
+	);
+};
+
+export default ValidationInputError;

plugins/woocommerce-blocks/assets/js/base/context/hooks/cart/use-store-cart-coupons.ts

@@ -5,7 +5,10 @@
  */
 import { __, sprintf } from '@wordpress/i18n';
 import { useDispatch, useSelect } from '@wordpress/data';
-import { CART_STORE_KEY as storeKey } from '@woocommerce/block-data';
+import {
+	CART_STORE_KEY as storeKey,
+	VALIDATION_STORE_KEY,
+} from '@woocommerce/block-data';
 import { decodeEntities } from '@wordpress/html-entities';
 import type { StoreCartCoupon } from '@woocommerce/types';
 
@@ -13,7 +16,6 @@ import type { StoreCartCoupon } from '@woocommerce/types';
  * Internal dependencies
  */
 import { useStoreCart } from './use-store-cart';
-import { useValidationContext } from '../../providers/validation';
 
 /**
  * This is a custom hook for loading the Store API /cart/coupons endpoint and an
@@ -27,7 +29,7 @@ export const useStoreCartCoupons = ( context = '' ): StoreCartCoupon => {
 	const { cartCoupons, cartIsLoading } = useStoreCart();
 	const { createErrorNotice } = useDispatch( 'core/notices' );
 	const { createNotice } = useDispatch( 'core/notices' );
-	const { setValidationErrors } = useValidationContext();
+	const { setValidationErrors } = useDispatch( VALIDATION_STORE_KEY );
 
 	const {
 		applyCoupon,

plugins/woocommerce-blocks/assets/js/base/context/hooks/payment-methods/use-payment-method-interface.ts

@@ -12,11 +12,11 @@ import LoadingMask from '@woocommerce/base-components/loading-mask';
 import type { PaymentMethodInterface } from '@woocommerce/types';
 import { useSelect } from '@wordpress/data';
 import { CHECKOUT_STORE_KEY } from '@woocommerce/block-data';
+import { ValidationInputError } from '@woocommerce/base-components/validation-input-error';
 
 /**
  * Internal dependencies
  */
-import { ValidationInputError } from '../../providers/validation';
 import { useStoreCart } from '../cart/use-store-cart';
 import { useStoreCartCoupons } from '../cart/use-store-cart-coupons';
 import { useEmitResponse } from '../use-emit-response';

plugins/woocommerce-blocks/assets/js/base/context/hooks/use-validation.ts

@@ -6,27 +6,31 @@ import type {
 	ValidationData,
 	ValidationContextError,
 } from '@woocommerce/type-defs/contexts';
-
+import { useDispatch, useSelect } from '@wordpress/data';
-/**
+import { VALIDATION_STORE_KEY } from '@woocommerce/block-data';
- * Internal dependencies
- */
-import { useValidationContext } from '../providers/validation/';
 
 /**
  * Custom hook for setting for adding errors to the validation system.
  */
 export const useValidation = (): ValidationData => {
 	const {
-		hasValidationErrors,
-		getValidationError,
 		clearValidationError,
 		hideValidationError,
 		setValidationErrors,
-	} = useValidationContext();
+	} = useDispatch( VALIDATION_STORE_KEY );
+	const { hasValidationErrors, getValidationError } = useSelect(
+		( select ) => {
+			const store = select( VALIDATION_STORE_KEY );
+			return {
+				hasValidationErrors: store.hasValidationErrors,
+				getValidationError: store.getValidationError(),
+			};
+		}
+	);
 	const prefix = 'extensions-errors';
 
 	return {
-		hasValidationErrors,
+		hasValidationErrors: hasValidationErrors(),
 		getValidationError: useCallback(
 			( validationErrorId: string ) =>
 				getValidationError( `${ prefix }-${ validationErrorId }` ),

plugins/woocommerce-blocks/assets/js/base/context/providers/add-to-cart-form/form-state/index.js

@@ -15,6 +15,8 @@ import {
 	productSupportsAddToCartForm,
 } from '@woocommerce/base-utils';
 import { useDispatch } from '@wordpress/data';
+import { VALIDATION_STORE_KEY } from '@woocommerce/block-data';
+
 /**
  * Internal dependencies
  */
@@ -28,7 +30,6 @@ import {
 	emitEventWithAbort,
 	reducer as emitReducer,
 } from './event-emit';
-import { useValidationContext } from '../../validation';
 import { useEmitResponse } from '../../../hooks/use-emit-response';
 import { removeNoticesByStatus } from '../../../../../utils/notices';
 
@@ -100,9 +101,12 @@ export const AddToCartFormStateContextProvider = ( {
 	const [ observers, observerDispatch ] = useReducer( emitReducer, {} );
 	const currentObservers = useShallowEqual( observers );
 	const { createErrorNotice } = useDispatch( 'core/notices' );
-	const { setValidationErrors } = useValidationContext();
+	const { setValidationErrors } = useDispatch( VALIDATION_STORE_KEY );
-	const { isSuccessResponse, isErrorResponse, isFailResponse } =
+	const {
-		useEmitResponse();
+		isSuccessResponse,
+		isErrorResponse,
+		isFailResponse,
+	} = useEmitResponse();
 
 	/**
 	 * @type {AddToCartFormEventRegistration}

plugins/woocommerce-blocks/assets/js/base/context/providers/add-to-cart-form/form/index.js

@@ -2,7 +2,6 @@
  * Internal dependencies
  */
 import { AddToCartFormStateContextProvider } from '../form-state';
-import { ValidationContextProvider } from '../../validation';
 import FormSubmit from './submit';
 
 /**
@@ -21,7 +20,6 @@ export const AddToCartFormContextProvider = ( {
 	showFormElements,
 } ) => {
 	return (
-		<ValidationContextProvider>
 		<AddToCartFormStateContextProvider
 			product={ product }
 			showFormElements={ showFormElements }
@@ -29,6 +27,5 @@ export const AddToCartFormContextProvider = ( {
 			{ children }
 			<FormSubmit />
 		</AddToCartFormStateContextProvider>
-		</ValidationContextProvider>
 	);
 };

plugins/woocommerce-blocks/assets/js/base/context/providers/add-to-cart-form/form/submit/index.js

@@ -6,13 +6,13 @@ import triggerFetch from '@wordpress/api-fetch';
 import { useEffect, useCallback, useState } from '@wordpress/element';
 import { decodeEntities } from '@wordpress/html-entities';
 import { triggerAddedToCartEvent } from '@woocommerce/base-utils';
-import { useDispatch } from '@wordpress/data';
+import { useDispatch, useSelect } from '@wordpress/data';
+import { VALIDATION_STORE_KEY } from '@woocommerce/block-data';
 
 /**
  * Internal dependencies
  */
 import { useAddToCartFormContext } from '../../form-state';
-import { useValidationContext } from '../../../validation';
 import { useStoreCart } from '../../../../hooks/cart/use-store-cart';
 
 /**
@@ -30,15 +30,18 @@ const FormSubmit = () => {
 		isProcessing,
 		requestParams,
 	} = useAddToCartFormContext();
-	const { hasValidationErrors, showAllValidationErrors } =
+	const { showAllValidationErrors } = useDispatch( VALIDATION_STORE_KEY );
-		useValidationContext();
+	const hasValidationErrors = useSelect( ( select ) => {
+		const store = select( VALIDATION_STORE_KEY );
+		return store.hasValidationErrors;
+	} );
 	const { createErrorNotice, removeNotice } = useDispatch( 'core/notices' );
 	const { receiveCart } = useStoreCart();
 	const [ isSubmitting, setIsSubmitting ] = useState( false );
 	const doSubmit = ! hasError && isProcessing;
 
 	const checkValidationContext = useCallback( () => {
-		if ( hasValidationErrors ) {
+		if ( hasValidationErrors() ) {
 			showAllValidationErrors();
 			return {
 				type: 'error',

plugins/woocommerce-blocks/assets/js/base/context/providers/cart-checkout/checkout-events/index.tsx

@@ -14,7 +14,10 @@ import {
 import { usePrevious } from '@woocommerce/base-hooks';
 import deprecated from '@wordpress/deprecated';
 import { useDispatch, useSelect } from '@wordpress/data';
-import { CHECKOUT_STORE_KEY } from '@woocommerce/block-data';
+import {
+	CHECKOUT_STORE_KEY,
+	VALIDATION_STORE_KEY,
+} from '@woocommerce/block-data';
 
 /**
  * Internal dependencies
@@ -22,7 +25,6 @@ import { CHECKOUT_STORE_KEY } from '@woocommerce/block-data';
 import type { CheckoutEventsContextType } from './types';
 import { useEventEmitters, reducer as emitReducer } from './event-emit';
 import { STATUS } from '../../../../../data/checkout/constants';
-import { useValidationContext } from '../../validation';
 import { useStoreEvents } from '../../../hooks/use-store-events';
 import { useCheckoutNotices } from '../../../hooks/use-checkout-notices';
 import { useEmitResponse } from '../../../hooks/use-emit-response';
@@ -64,7 +66,7 @@ export const CheckoutEventsProvider = ( {
 		checkoutActions.setRedirectUrl( redirectUrl );
 	}
 
-	const { setValidationErrors } = useValidationContext();
+	const { setValidationErrors } = useDispatch( VALIDATION_STORE_KEY );
 	const { createErrorNotice } = useDispatch( 'core/notices' );
 
 	const { dispatchCheckoutEvent } = useStoreEvents();

plugins/woocommerce-blocks/assets/js/base/context/providers/cart-checkout/checkout-processor.js

@@ -15,7 +15,10 @@ import {
 	formatStoreApiErrorMessage,
 } from '@woocommerce/base-utils';
 import { useDispatch, useSelect } from '@wordpress/data';
-import { CHECKOUT_STORE_KEY } from '@woocommerce/block-data';
+import {
+	CHECKOUT_STORE_KEY,
+	VALIDATION_STORE_KEY,
+} from '@woocommerce/block-data';
 
 /**
  * Internal dependencies
@@ -25,9 +28,9 @@ import { useCheckoutEventsContext } from './checkout-events';
 import { useShippingDataContext } from './shipping';
 import { useCustomerDataContext } from './customer';
 import { usePaymentMethodDataContext } from './payment-methods';
-import { useValidationContext } from '../validation';
 import { useStoreCart } from '../../hooks/cart/use-store-cart';
 import { useStoreNoticesContext } from '../store-notices';
+
 /**
  * CheckoutProcessor component.
  *
@@ -58,7 +61,9 @@ const CheckoutProcessor = () => {
 	const { setHasError, processCheckoutResponse } =
 		useDispatch( CHECKOUT_STORE_KEY );
 
-	const { hasValidationErrors } = useValidationContext();
+	const hasValidationErrors = useSelect(
+		( select ) => select( VALIDATION_STORE_KEY ).hasValidationErrors
+	);
 	const { shippingErrorStatus } = useShippingDataContext();
 	const { billingAddress, shippingAddress } = useCustomerDataContext();
 	const { cartNeedsPayment, cartNeedsShipping, receiveCart } = useStoreCart();
@@ -87,7 +92,7 @@ const CheckoutProcessor = () => {
 	}, [ activePaymentMethod, expressPaymentMethods, paymentMethods ] );
 
 	const checkoutWillHaveError =
-		( hasValidationErrors && ! isExpressPaymentMethodActive ) ||
+		( hasValidationErrors() && ! isExpressPaymentMethodActive ) ||
 		currentPaymentStatus.hasError ||
 		shippingErrorStatus.hasError;
 
@@ -128,7 +133,7 @@ const CheckoutProcessor = () => {
 	}, [ billingAddress, shippingAddress, redirectUrl ] );
 
 	const checkValidation = useCallback( () => {
-		if ( hasValidationErrors ) {
+		if ( hasValidationErrors() ) {
 			return false;
 		}
 		if ( currentPaymentStatus.hasError ) {

plugins/woocommerce-blocks/assets/js/base/context/providers/cart-checkout/payment-methods/payment-method-data-context.tsx

@@ -12,7 +12,10 @@ import {
 } from '@wordpress/element';
 import { objectHasProp } from '@woocommerce/types';
 import { useDispatch, useSelect } from '@wordpress/data';
-import { CHECKOUT_STORE_KEY } from '@woocommerce/block-data';
+import {
+	CHECKOUT_STORE_KEY,
+	VALIDATION_STORE_KEY,
+} from '@woocommerce/block-data';
 
 /**
  * Internal dependencies
@@ -39,7 +42,6 @@ import {
 	emitEventWithAbort,
 	reducer as emitReducer,
 } from './event-emit';
-import { useValidationContext } from '../../validation';
 import { useEmitResponse } from '../../../hooks/use-emit-response';
 import { getCustomerPaymentMethods } from './utils';
 
@@ -77,9 +79,10 @@ export const PaymentMethodDataProvider = ( {
 		};
 	} );
 	const { isEditor, getPreviewData } = useEditorContext();
-	const { setValidationErrors } = useValidationContext();
+	const { setValidationErrors } = useDispatch( VALIDATION_STORE_KEY );
-	const { createErrorNotice: addErrorNotice, removeNotice } =
+	const { createErrorNotice: addErrorNotice, removeNotice } = useDispatch(
-		useDispatch( 'core/notices' );
+		'core/notices'
+	);
 	const {
 		isSuccessResponse,
 		isErrorResponse,

plugins/woocommerce-blocks/assets/js/base/context/providers/index.js

@@ -3,7 +3,6 @@ export * from './add-to-cart-form';
 export * from './cart-checkout';
 export * from './store-notices';
 export * from './store-snackbar-notices';
-export * from './validation';
 export * from './container-width-context';
 export * from './editor-context';
 export * from './query-state-context';

plugins/woocommerce-blocks/assets/js/base/context/providers/validation/components/index.js

@@ -1 +0,0 @@
-export * from './validation-input-error';

plugins/woocommerce-blocks/assets/js/base/context/providers/validation/components/validation-input-error/index.js

@@ -1,41 +0,0 @@
-/**
- * External dependencies
- */
-import PropTypes from 'prop-types';
-
-/**
- * Internal dependencies
- */
-import { useValidationContext } from '../../context';
-import './style.scss';
-
-export const ValidationInputError = ( {
-	errorMessage = '',
-	propertyName = '',
-	elementId = '',
-} ) => {
-	const { getValidationError, getValidationErrorId } = useValidationContext();
-
-	if ( ! errorMessage || typeof errorMessage !== 'string' ) {
-		const error = getValidationError( propertyName ) || {};
-		if ( error.message && ! error.hidden ) {
-			errorMessage = error.message;
-		} else {
-			return null;
-		}
-	}
-
-	return (
-		<div className="wc-block-components-validation-error" role="alert">
-			<p id={ getValidationErrorId( elementId ) }>{ errorMessage }</p>
-		</div>
-	);
-};
-
-ValidationInputError.propTypes = {
-	errorMessage: PropTypes.string,
-	propertyName: PropTypes.string,
-	elementId: PropTypes.string,
-};
-
-export default ValidationInputError;

plugins/woocommerce-blocks/assets/js/base/context/providers/validation/context.js

@@ -1,257 +0,0 @@
-/**
- * External dependencies
- */
-import {
-	createContext,
-	useCallback,
-	useContext,
-	useState,
-} from '@wordpress/element';
-import { pickBy } from 'lodash';
-import isShallowEqual from '@wordpress/is-shallow-equal';
-
-/**
- * @typedef { import('@woocommerce/type-defs/contexts').ValidationContext } ValidationContext
- * @typedef {import('react')} React
- */
-
-const ValidationContext = createContext( {
-	getValidationError: () => '',
-	setValidationErrors: ( errors ) => void errors,
-	clearValidationError: ( property ) => void property,
-	clearAllValidationErrors: () => void null,
-	hideValidationError: () => void null,
-	showValidationError: () => void null,
-	showAllValidationErrors: () => void null,
-	hasValidationErrors: false,
-	getValidationErrorId: ( errorId ) => errorId,
-} );
-
-/**
- * @return {ValidationContext} The context values for the validation context.
- */
-export const useValidationContext = () => {
-	return useContext( ValidationContext );
-};
-
-/**
- * Validation context provider
- *
- * Any children of this context will be exposed to validation state and helpers
- * for tracking validation.
- *
- * @param {Object}      props          Incoming props for the component.
- * @param {JSX.Element} props.children What react elements are wrapped by this component.
- */
-export const ValidationContextProvider = ( { children } ) => {
-	const [ validationErrors, updateValidationErrors ] = useState( {} );
-
-	/**
-	 * This retrieves any validation error message that exists in state for the
-	 * given property name.
-	 *
-	 * @param {string} property The property the error message is for.
-	 *
-	 * @return {Object} The error object for the given property.
-	 */
-	const getValidationError = useCallback(
-		( property ) => validationErrors[ property ],
-		[ validationErrors ]
-	);
-
-	/**
-	 * Provides an id for the validation error that can be used to fill out
-	 * aria-describedby attribute values.
-	 *
-	 * @param {string} errorId The input css id the validation error is related
-	 *                         to.
-	 * @return {string} The id to use for the validation error container.
-	 */
-	const getValidationErrorId = useCallback(
-		( errorId ) => {
-			const error = validationErrors[ errorId ];
-			if ( ! error || error.hidden ) {
-				return '';
-			}
-			return `validate-error-${ errorId }`;
-		},
-		[ validationErrors ]
-	);
-
-	/**
-	 * Clears any validation error that exists in state for the given property
-	 * name.
-	 *
-	 * @param {string} property The name of the property to clear if exists in
-	 *                          validation error state.
-	 */
-	const clearValidationError = useCallback(
-		/**
-		 * Callback that is memoized.
-		 *
-		 * @param {string} property
-		 */
-		( property ) => {
-			updateValidationErrors(
-				/**
-				 * Callback for validation Errors handling.
-				 *
-				 * @param {Object} prevErrors
-				 */
-				( prevErrors ) => {
-					if ( ! prevErrors[ property ] ) {
-						return prevErrors;
-					}
-
-					const {
-						// eslint-disable-next-line no-unused-vars -- this is intentional to omit the dynamic property from the returned object.
-						[ property ]: clearedProperty,
-						...newErrors
-					} = prevErrors;
-					return newErrors;
-				}
-			);
-		},
-		[]
-	);
-
-	/**
-	 * Clears the entire validation error state.
-	 */
-	const clearAllValidationErrors = useCallback(
-		() => void updateValidationErrors( {} ),
-		[]
-	);
-
-	/**
-	 * Used to record new validation errors in the state.
-	 *
-	 * @param {Object} newErrors An object where keys are the property names the
-	 *                           validation error is for and values are the
-	 *                           validation error message displayed to the user.
-	 */
-	const setValidationErrors = useCallback( ( newErrors ) => {
-		if ( ! newErrors ) {
-			return;
-		}
-		updateValidationErrors( ( prevErrors ) => {
-			newErrors = pickBy( newErrors, ( error, property ) => {
-				if ( typeof error.message !== 'string' ) {
-					return false;
-				}
-				if ( prevErrors.hasOwnProperty( property ) ) {
-					return ! isShallowEqual( prevErrors[ property ], error );
-				}
-				return true;
-			} );
-			if ( Object.values( newErrors ).length === 0 ) {
-				return prevErrors;
-			}
-			return {
-				...prevErrors,
-				...newErrors,
-			};
-		} );
-	}, [] );
-
-	/**
-	 * Used to update a validation error.
-	 *
-	 * @param {string} property The name of the property to update.
-	 * @param {Object} newError New validation error object.
-	 */
-	const updateValidationError = useCallback( ( property, newError ) => {
-		updateValidationErrors( ( prevErrors ) => {
-			if ( ! prevErrors.hasOwnProperty( property ) ) {
-				return prevErrors;
-			}
-			const updatedError = {
-				...prevErrors[ property ],
-				...newError,
-			};
-			return isShallowEqual( prevErrors[ property ], updatedError )
-				? prevErrors
-				: {
-						...prevErrors,
-						[ property ]: updatedError,
-				  };
-		} );
-	}, [] );
-
-	/**
-	 * Given a property name and if an associated error exists, it sets its
-	 * `hidden` value to true.
-	 *
-	 * @param {string} property The name of the property to set the `hidden`
-	 *                          value to true.
-	 */
-	const hideValidationError = useCallback(
-		( property ) =>
-			void updateValidationError( property, {
-				hidden: true,
-			} ),
-		[ updateValidationError ]
-	);
-
-	/**
-	 * Given a property name and if an associated error exists, it sets its
-	 * `hidden` value to false.
-	 *
-	 * @param {string} property The name of the property to set the `hidden`
-	 *                          value to false.
-	 */
-	const showValidationError = useCallback(
-		( property ) =>
-			void updateValidationError( property, {
-				hidden: false,
-			} ),
-		[ updateValidationError ]
-	);
-
-	/**
-	 * Sets the `hidden` value of all errors to `false`.
-	 */
-	const showAllValidationErrors = useCallback(
-		() =>
-			void updateValidationErrors( ( prevErrors ) => {
-				const updatedErrors = {};
-
-				Object.keys( prevErrors ).forEach( ( property ) => {
-					if ( prevErrors[ property ].hidden ) {
-						updatedErrors[ property ] = {
-							...prevErrors[ property ],
-							hidden: false,
-						};
-					}
-				} );
-
-				if ( Object.values( updatedErrors ).length === 0 ) {
-					return prevErrors;
-				}
-
-				return {
-					...prevErrors,
-					...updatedErrors,
-				};
-			} ),
-		[]
-	);
-
-	const context = {
-		getValidationError,
-		setValidationErrors,
-		clearValidationError,
-		clearAllValidationErrors,
-		hideValidationError,
-		showValidationError,
-		showAllValidationErrors,
-		hasValidationErrors: Object.keys( validationErrors ).length > 0,
-		getValidationErrorId,
-	};
-
-	return (
-		<ValidationContext.Provider value={ context }>
-			{ children }
-		</ValidationContext.Provider>
-	);
-};

plugins/woocommerce-blocks/assets/js/base/context/providers/validation/index.js

@@ -1,2 +0,0 @@
-export * from './context';
-export * from './components';

plugins/woocommerce-blocks/assets/js/blocks/cart/block.js

@@ -6,7 +6,6 @@ import { useStoreCart } from '@woocommerce/base-context/hooks';
 import { useEffect } from '@wordpress/element';
 import LoadingMask from '@woocommerce/base-components/loading-mask';
 import {
-	ValidationContextProvider,
 	StoreNoticesContainer,
 	SnackbarNoticesContainer,
 } from '@woocommerce/base-context';
@@ -39,9 +38,7 @@ const Cart = ( { children, attributes = {} } ) => {
 					hasDarkControls,
 				} }
 			>
-				<ValidationContextProvider>
 				{ children }
-				</ValidationContextProvider>
 			</CartBlockContext.Provider>
 		</LoadingMask>
 	);

plugins/woocommerce-blocks/assets/js/blocks/checkout/block.tsx

@@ -6,8 +6,6 @@ import classnames from 'classnames';
 import { createInterpolateElement, useEffect } from '@wordpress/element';
 import { useStoreCart } from '@woocommerce/base-context/hooks';
 import {
-	useValidationContext,
-	ValidationContextProvider,
 	CheckoutProvider,
 	SnackbarNoticesContainer,
 } from '@woocommerce/base-context';
@@ -17,8 +15,11 @@ import { SidebarLayout } from '@woocommerce/base-components/sidebar-layout';
 import { CURRENT_USER_IS_ADMIN, getSetting } from '@woocommerce/settings';
 import { SlotFillProvider } from '@woocommerce/blocks-checkout';
 import withScrollToTop from '@woocommerce/base-hocs/with-scroll-to-top';
-import { useSelect } from '@wordpress/data';
+import { useDispatch, useSelect } from '@wordpress/data';
-import { CHECKOUT_STORE_KEY } from '@woocommerce/block-data';
+import {
+	CHECKOUT_STORE_KEY,
+	VALIDATION_STORE_KEY,
+} from '@woocommerce/block-data';
 
 /**
  * Internal dependencies
@@ -120,8 +121,13 @@ const ScrollOnError = ( {
 			};
 		}
 	);
-	const { hasValidationErrors, showAllValidationErrors } =
+	const { hasValidationErrors } = useSelect( ( select ) => {
-		useValidationContext();
+		const store = select( VALIDATION_STORE_KEY );
+		return {
+			hasValidationErrors: store.hasValidationErrors(),
+		};
+	} );
+	const { showAllValidationErrors } = useDispatch( VALIDATION_STORE_KEY );
 
 	const hasErrorsToDisplay =
 		checkoutIsIdle &&
@@ -181,14 +187,12 @@ const Block = ( {
 			<SnackbarNoticesContainer context="wc/checkout" />
 			<StoreNoticesProvider>
 				<StoreNoticesContainer context="wc/checkout" />
-				<ValidationContextProvider>
 				{ /* SlotFillProvider need to be defined before CheckoutProvider so fills have the SlotFill context ready when they mount. */ }
 				<SlotFillProvider>
 					<CheckoutProvider>
 						<SidebarLayout
 							className={ classnames( 'wc-block-checkout', {
-									'has-dark-controls':
+								'has-dark-controls': attributes.hasDarkControls,
-										attributes.hasDarkControls,
 							} ) }
 						>
 							<Checkout attributes={ attributes }>
@@ -198,7 +202,6 @@ const Block = ( {
 						</SidebarLayout>
 					</CheckoutProvider>
 				</SlotFillProvider>
-				</ValidationContextProvider>
 			</StoreNoticesProvider>
 		</BlockErrorBoundary>
 	);

plugins/woocommerce-blocks/assets/js/data/checkout/types.ts

@@ -12,6 +12,7 @@ import type { CheckoutState } from './default-state';
 import type { DispatchFromMap, SelectFromMap } from '../mapped-types';
 import * as selectors from './selectors';
 import * as actions from './actions';
+import { FieldValidationStatus } from '../types';
 
 export type CheckoutAfterProcessingWithErrorEventData = {
 	redirectUrl: CheckoutState[ 'redirectUrl' ];
@@ -53,7 +54,9 @@ export type emitValidateEventType = ( {
 	setValidationErrors,
 }: {
 	observers: EventObserversType;
-	setValidationErrors: ( errors: Array< unknown > ) => void;
+	setValidationErrors: (
+		errors: Record< string, FieldValidationStatus >
+	) => void;
 } ) => ( {
 	dispatch,
 	registry,

plugins/woocommerce-blocks/assets/js/data/index.ts

@@ -10,6 +10,7 @@ export { SCHEMA_STORE_KEY } from './schema';
 export { COLLECTIONS_STORE_KEY } from './collections';
 export { CART_STORE_KEY } from './cart';
 export { CHECKOUT_STORE_KEY } from './checkout';
+export { VALIDATION_STORE_KEY } from './validation';
 export { QUERY_STATE_STORE_KEY } from './query-state';
 export * from './constants';
 export * from './types';

plugins/woocommerce-blocks/assets/js/data/types.ts

@@ -42,3 +42,8 @@ export function assertResponseIsValid(
 	}
 	throw new Error( 'Response not valid' );
 }
+
+export interface FieldValidationStatus {
+	message: string;
+	hidden: boolean;
+}

plugins/woocommerce-blocks/assets/js/data/validation/action-types.ts

@@ -0,0 +1,8 @@
+export const ACTION_TYPES = {
+	SET_VALIDATION_ERRORS: 'SET_VALIDATION_ERRORS',
+	CLEAR_ALL_VALIDATION_ERRORS: 'CLEAR_ALL_VALIDATION_ERRORS',
+	CLEAR_VALIDATION_ERROR: 'CLEAR_VALIDATION_ERROR',
+	HIDE_VALIDATION_ERROR: 'HIDE_VALIDATION_ERROR',
+	SHOW_VALIDATION_ERROR: 'SHOW_VALIDATION_ERROR',
+	SHOW_ALL_VALIDATION_ERRORS: 'SHOW_ALL_VALIDATION_ERRORS',
+} as const;

plugins/woocommerce-blocks/assets/js/data/validation/actions.ts

@@ -0,0 +1,41 @@
+/**
+ * Internal dependencies
+ */
+import { ACTION_TYPES as types } from './action-types';
+import { ReturnOrGeneratorYieldUnion } from '../mapped-types';
+import { FieldValidationStatus } from '../types';
+
+export const setValidationErrors = (
+	errors: Record< string, FieldValidationStatus >
+) => ( {
+	type: types.SET_VALIDATION_ERRORS,
+	errors,
+} );
+
+export const clearAllValidationErrors = () => ( {
+	type: types.CLEAR_ALL_VALIDATION_ERRORS,
+} );
+
+export const clearValidationError = ( error: string ) => ( {
+	type: types.CLEAR_VALIDATION_ERROR,
+	error,
+} );
+export const hideValidationError = ( error: string ) => ( {
+	type: types.HIDE_VALIDATION_ERROR,
+	error,
+} );
+export const showValidationError = ( error: string ) => ( {
+	type: types.SHOW_VALIDATION_ERROR,
+	error,
+} );
+export const showAllValidationErrors = () => ( {
+	type: types.SHOW_ALL_VALIDATION_ERRORS,
+} );
+export type ValidationAction = ReturnOrGeneratorYieldUnion<
+	| typeof setValidationErrors
+	| typeof clearAllValidationErrors
+	| typeof clearValidationError
+	| typeof hideValidationError
+	| typeof showValidationError
+	| typeof showAllValidationErrors
+>;

plugins/woocommerce-blocks/assets/js/data/validation/constants.ts

@@ -0,0 +1 @@
+export const STORE_KEY = 'wc/store/validation';

plugins/woocommerce-blocks/assets/js/data/validation/index.ts

@@ -0,0 +1,39 @@
+/**
+ * External dependencies
+ */
+import { createReduxStore, register } from '@wordpress/data';
+
+/**
+ * Internal dependencies
+ */
+import reducer from './reducers';
+import { STORE_KEY } from './constants';
+import * as actions from './actions';
+import * as selectors from './selectors';
+import { DispatchFromMap, SelectFromMap } from '../mapped-types';
+
+export const config = {
+	reducer,
+	selectors,
+	actions,
+	// TODO: Gutenberg with Thunks was released in WP 6.0. Once 6.1 is released, remove the experimental flag here
+	// eslint-disable-next-line @typescript-eslint/ban-ts-comment
+	// @ts-ignore We pass this in case there is an older version of Gutenberg running.
+	__experimentalUseThunks: true,
+};
+
+const store = createReduxStore( STORE_KEY, config );
+register( store );
+
+export const VALIDATION_STORE_KEY = STORE_KEY;
+
+declare module '@wordpress/data' {
+	function dispatch(
+		key: typeof VALIDATION_STORE_KEY
+	): DispatchFromMap< typeof actions >;
+	function select( key: typeof VALIDATION_STORE_KEY ): SelectFromMap<
+		typeof selectors
+	> & {
+		hasFinishedResolution: ( selector: string ) => boolean;
+	};
+}

plugins/woocommerce-blocks/assets/js/data/validation/reducers.ts

@@ -0,0 +1,80 @@
+/**
+ * External dependencies
+ */
+import type { Reducer } from 'redux';
+import { pickBy } from 'lodash';
+import isShallowEqual from '@wordpress/is-shallow-equal';
+import { isString } from '@woocommerce/types';
+
+/**
+ * Internal dependencies
+ */
+import { ValidationAction } from './actions';
+import { ACTION_TYPES as types } from './action-types';
+import { FieldValidationStatus } from '../types';
+
+const reducer: Reducer< Record< string, FieldValidationStatus > > = (
+	state: Record< string, FieldValidationStatus > = {},
+	action: Partial< ValidationAction >
+) => {
+	const newState = { ...state };
+	switch ( action.type ) {
+		case types.SET_VALIDATION_ERRORS:
+			const newErrors = pickBy( action.errors, ( error, property ) => {
+				if ( typeof error.message !== 'string' ) {
+					return false;
+				}
+				if ( state.hasOwnProperty( property ) ) {
+					return ! isShallowEqual( state[ property ], error );
+				}
+				return true;
+			} );
+			if ( Object.values( newErrors ).length === 0 ) {
+				return state;
+			}
+			return { ...state, ...action.errors };
+		case types.CLEAR_ALL_VALIDATION_ERRORS:
+			return {};
+
+		case types.CLEAR_VALIDATION_ERROR:
+			if (
+				! isString( action.error ) ||
+				! newState.hasOwnProperty( action.error )
+			) {
+				return newState;
+			}
+			delete newState[ action.error ];
+			return newState;
+		case types.HIDE_VALIDATION_ERROR:
+			if (
+				! isString( action.error ) ||
+				! newState.hasOwnProperty( action.error )
+			) {
+				return newState;
+			}
+			newState[ action.error ].hidden = true;
+			return newState;
+		case types.SHOW_VALIDATION_ERROR:
+			if (
+				! isString( action.error ) ||
+				! newState.hasOwnProperty( action.error )
+			) {
+				return newState;
+			}
+			newState[ action.error ].hidden = false;
+			return newState;
+		case types.SHOW_ALL_VALIDATION_ERRORS:
+			Object.keys( newState ).forEach( ( property ) => {
+				if ( newState[ property ].hidden ) {
+					newState[ property ].hidden = false;
+				}
+			} );
+			return { ...newState };
+
+		default:
+			return state;
+	}
+};
+
+export type State = ReturnType< typeof reducer >;
+export default reducer;

plugins/woocommerce-blocks/assets/js/data/validation/selectors.ts

@@ -0,0 +1,19 @@
+/**
+ * Internal dependencies
+ */
+import type { State } from './reducers';
+
+export const getValidationError = ( state: State ) => {
+	return ( errorId: string ) => state[ errorId ];
+};
+export const getValidationErrorId = ( state: State ) => {
+	return ( errorId: string ) => {
+		if ( ! state.hasOwnProperty( errorId ) || state[ errorId ].hidden ) {
+			return;
+		}
+		return `validate-error-${ errorId }`;
+	};
+};
+export const hasValidationErrors = ( state: State ) => {
+	return Object.keys( state ).length > 0;
+};

plugins/woocommerce-blocks/assets/js/data/validation/test/reducers.ts

@@ -0,0 +1,248 @@
+/**
+ * Internal dependencies
+ */
+import reducer from '../reducers';
+import { FieldValidationStatus } from '../../types';
+import { ACTION_TYPES as types } from '.././action-types';
+import { ValidationAction } from '../actions';
+
+describe( 'Validation reducer', () => {
+	it( 'Sets a single validation error', () => {
+		const singleValidationAction: ValidationAction = {
+			type: types.SET_VALIDATION_ERRORS,
+			errors: {
+				singleValidationError: {
+					message: 'This is a single validation error message',
+					hidden: false,
+				},
+			},
+		};
+		const nextState = reducer( {}, singleValidationAction );
+		expect( nextState ).toEqual( {
+			singleValidationError: {
+				message: 'This is a single validation error message',
+				hidden: false,
+			},
+		} );
+	} );
+
+	it( 'Does not add new errors if the same error already exists in state', () => {
+		const state: Record< string, FieldValidationStatus > = {
+			existingError: {
+				message: 'This is an existing error message',
+				hidden: false,
+			},
+		};
+		const existingErrorValidation: ValidationAction = {
+			type: types.SET_VALIDATION_ERRORS,
+			errors: {
+				existingError: {
+					message: 'This is an existing error message',
+					hidden: false,
+				},
+			},
+		};
+		const nextState = reducer( state, existingErrorValidation );
+		expect( nextState ).toEqual( {
+			existingError: {
+				message: 'This is an existing error message',
+				hidden: false,
+			},
+		} );
+	} );
+
+	it( 'Does not add new errors if error message is not string, but keeps existing errors', () => {
+		const integerErrorAction: ValidationAction = {
+			type: types.SET_VALIDATION_ERRORS,
+			errors: {
+				integerError: {
+					// eslint-disable-next-line @typescript-eslint/ban-ts-comment
+					// @ts-ignore ignoring because we're testing runtime errors with integers.
+					message: 1234,
+					hidden: false,
+				},
+			},
+		};
+		const nextState = reducer( {}, integerErrorAction );
+		expect( nextState ).not.toHaveProperty( 'integerError' );
+	} );
+
+	it( 'Updates existing error if message or hidden property changes', () => {
+		const state: Record< string, FieldValidationStatus > = {
+			existingValidationError: {
+				message: 'This is an existing error message',
+				hidden: false,
+			},
+		};
+		const updateExistingErrorAction: ValidationAction = {
+			type: types.SET_VALIDATION_ERRORS,
+			errors: {
+				existingValidationError: {
+					message: 'This is an existing error message',
+					hidden: true,
+				},
+			},
+		};
+		const nextState = reducer( state, updateExistingErrorAction );
+		expect( nextState ).toEqual( {
+			existingValidationError: {
+				message: 'This is an existing error message',
+				hidden: true,
+			},
+		} );
+	} );
+
+	it( 'Appends new errors to list of existing errors', () => {
+		const state: Record< string, FieldValidationStatus > = {
+			existingError: {
+				message: 'This is an existing error message',
+				hidden: false,
+			},
+		};
+		const addNewError: ValidationAction = {
+			type: types.SET_VALIDATION_ERRORS,
+			errors: {
+				newError: {
+					message: 'This is a new error',
+					hidden: false,
+				},
+			},
+		};
+		const nextState = reducer( state, addNewError );
+		expect( nextState ).toEqual( {
+			existingError: {
+				message: 'This is an existing error message',
+				hidden: false,
+			},
+			newError: {
+				message: 'This is a new error',
+				hidden: false,
+			},
+		} );
+	} );
+
+	it( 'Clears all validation errors', () => {
+		const state: Record< string, FieldValidationStatus > = {
+			existingError: {
+				message: 'This is an existing error message',
+				hidden: false,
+			},
+		};
+		const clearAllErrors: ValidationAction = {
+			type: types.CLEAR_ALL_VALIDATION_ERRORS,
+		};
+		const nextState = reducer( state, clearAllErrors );
+		expect( nextState ).toEqual( {} );
+	} );
+
+	it( 'Clears a single validation error', () => {
+		const state: Record< string, FieldValidationStatus > = {
+			existingError: {
+				message: 'This is an existing error message',
+				hidden: false,
+			},
+			testError: {
+				message: 'This is error should not be removed',
+				hidden: false,
+			},
+		};
+		const clearError: ValidationAction = {
+			type: types.CLEAR_VALIDATION_ERROR,
+			error: 'existingError',
+		};
+		const nextState = reducer( state, clearError );
+		expect( nextState ).not.toHaveProperty( 'existingError' );
+		expect( nextState ).toHaveProperty( 'testError' );
+	} );
+
+	it( 'Hides a single validation error', () => {
+		const state: Record< string, FieldValidationStatus > = {
+			existingError: {
+				message: 'This is an existing error message',
+				hidden: false,
+			},
+			testError: {
+				message: 'This is error should not be removed',
+				hidden: false,
+			},
+		};
+		const testAction: ValidationAction = {
+			type: types.HIDE_VALIDATION_ERROR,
+			error: 'existingError',
+		};
+		const nextState = reducer( state, testAction );
+		expect( nextState ).toEqual( {
+			existingError: {
+				message: 'This is an existing error message',
+				hidden: true,
+			},
+			testError: {
+				message: 'This is error should not be removed',
+				hidden: false,
+			},
+		} );
+	} );
+
+	it( 'Shows a single validation error', () => {
+		const state: Record< string, FieldValidationStatus > = {
+			existingError: {
+				message: 'This is an existing error message',
+				hidden: true,
+			},
+			testError: {
+				message: 'This is error should not be removed',
+				hidden: true,
+			},
+			visibleError: {
+				message: 'This is error should remain visible',
+				hidden: false,
+			},
+		};
+		const testAction: ValidationAction = {
+			type: types.SHOW_VALIDATION_ERROR,
+			error: 'existingError',
+		};
+		const nextState = reducer( state, testAction );
+		expect( nextState ).toEqual( {
+			existingError: {
+				message: 'This is an existing error message',
+				hidden: false,
+			},
+			testError: {
+				message: 'This is error should not be removed',
+				hidden: true,
+			},
+			visibleError: {
+				message: 'This is error should remain visible',
+				hidden: false,
+			},
+		} );
+	} );
+
+	it( 'Shows all validation errors', () => {
+		const state: Record< string, FieldValidationStatus > = {
+			firstExistingError: {
+				message: 'This is first existing error message',
+				hidden: true,
+			},
+			secondExistingError: {
+				message: 'This is the second existing error message',
+				hidden: true,
+			},
+		};
+		const showAllErrors: ValidationAction = {
+			type: types.SHOW_ALL_VALIDATION_ERRORS,
+		};
+		const nextState = reducer( state, showAllErrors );
+		expect( nextState ).toEqual( {
+			firstExistingError: {
+				message: 'This is first existing error message',
+				hidden: false,
+			},
+			secondExistingError: {
+				message: 'This is the second existing error message',
+				hidden: false,
+			},
+		} );
+	} );
+} );

plugins/woocommerce-blocks/assets/js/data/validation/test/selectors.ts

@@ -0,0 +1,56 @@
+/**
+ * Internal dependencies
+ */
+import {
+	getValidationErrorId,
+	getValidationError,
+	hasValidationErrors,
+} from '../selectors';
+import { FieldValidationStatus } from '../../types';
+
+describe( 'Validation selectors', () => {
+	it( 'Gets the validation error', () => {
+		const state: Record< string, FieldValidationStatus > = {
+			validationError: {
+				message: 'This is a test message',
+				hidden: false,
+			},
+		};
+		const validationError = getValidationError( state )(
+			'validationError'
+		);
+		expect( validationError ).toEqual( {
+			message: 'This is a test message',
+			hidden: false,
+		} );
+	} );
+
+	it( 'Gets the generated validation error ID', () => {
+		const state: Record< string, FieldValidationStatus > = {
+			validationError: {
+				message: 'This is a test message',
+				hidden: false,
+			},
+		};
+		const validationErrorID = getValidationErrorId( state )(
+			'validationError'
+		);
+		expect( validationErrorID ).toEqual( `validate-error-validationError` );
+	} );
+
+	it( 'Checks if state has any validation errors', () => {
+		const state: Record< string, FieldValidationStatus > = {
+			validationError: {
+				message: 'This is a test message',
+				hidden: false,
+			},
+		};
+		const validationErrors = hasValidationErrors( state );
+		expect( validationErrors ).toEqual( true );
+		const stateWithNoErrors: Record< string, FieldValidationStatus > = {};
+		const stateWithNoErrorsCheckResult = hasValidationErrors(
+			stateWithNoErrors
+		);
+		expect( stateWithNoErrorsCheckResult ).toEqual( false );
+	} );
+} );

plugins/woocommerce-blocks/assets/js/types/type-defs/payment-method-interface.ts

@@ -5,6 +5,7 @@
 import type PaymentMethodLabel from '@woocommerce/base-components/cart-checkout/payment-method-label';
 import type PaymentMethodIcons from '@woocommerce/base-components/cart-checkout/payment-method-icons';
 import type LoadingMask from '@woocommerce/base-components/loading-mask';
+import type ValidationInputError from '@woocommerce/base-components/validation-input-error';
 
 /**
  * Internal dependencies
@@ -76,7 +77,7 @@ export interface ComponentProps {
 	// A component used for displaying payment method labels, including an icon.
 	PaymentMethodLabel: typeof PaymentMethodLabel;
 	// A container for holding validation errors
-	ValidationInputError: () => JSX.Element | null;
+	ValidationInputError: typeof ValidationInputError;
 }
 
 export interface EmitResponseProps {