Lodash: Remove from @wordpress/data (#47848)

packages/data/README.md

@@ -164,14 +164,22 @@ Integrating an existing redux store with its own reducers, store enhancers and m
 _Example:_
 
 ```js
-import { mapValues } from 'lodash';
 import { register } from '@wordpress/data';
 import existingSelectors from './existing-app/selectors';
 import existingActions from './existing-app/actions';
 import createStore from './existing-app/store';
 
 const reduxStore = createStore();
 
+const mapValues = ( obj, callback ) =>
+	Object.entries( obj ).reduce(
+		( acc, [ key, value ] ) => ( {
+			...acc,
+			[ key ]: callback( value ),
+		} ),
+		{}
+	);
+
 const boundSelectors = mapValues(
 	existingSelectors,
 	( selector ) =>

packages/data/package.json

@@ -40,7 +40,6 @@
 		"equivalent-key-map": "^0.2.2",
 		"is-plain-object": "^5.0.0",
 		"is-promise": "^4.0.0",
-		"lodash": "^4.17.21",
 		"redux": "^4.1.2",
 		"turbo-combine-reducers": "^1.0.2",
 		"use-memo-one": "^1.1.1"

packages/data/src/redux-store/index.js

@@ -2,7 +2,6 @@
  * External dependencies
  */
 import { createStore, applyMiddleware } from 'redux';
-import { get, mapValues } from 'lodash';
 import combineReducers from 'turbo-combine-reducers';
 import EquivalentKeyMap from 'equivalent-key-map';
 
@@ -45,6 +44,23 @@ const trimUndefinedValues = ( array ) => {
 	return result;
 };
 
+/**
+ * Creates a new object with the same keys, but with `callback()` called as
+ * a transformer function on each of the values.
+ *
+ * @param {Object}   obj      The object to transform.
+ * @param {Function} callback The function to transform each object value.
+ * @return {Array} Transformed object.
+ */
+const mapValues = ( obj, callback ) =>
+	Object.entries( obj ?? {} ).reduce(
+		( acc, [ key, value ] ) => ( {
+			...acc,
+			[ key ]: callback( value, key ),
+		} ),
+		{}
+	);
+
 // Convert Map objects to plain objects
 const mapToObject = ( key, state ) => {
 	if ( state instanceof Map ) {
@@ -608,7 +624,7 @@ function mapResolvers( resolvers, selectors, store, resolversCache ) {
  * @param {Array}  args         Selector Arguments.
  */
 async function fulfillResolver( store, resolvers, selectorName, ...args ) {
-	const resolver = get( resolvers, [ selectorName ] );
+	const resolver = resolvers[ selectorName ];
 	if ( ! resolver ) {
 		return;
 	}