Lodash: Remove completely from annotations package (WordPress#41856)

packages/annotations/package.json

@@ -30,7 +30,6 @@
 		"@wordpress/hooks": "file:../hooks",
 		"@wordpress/i18n": "file:../i18n",
 		"@wordpress/rich-text": "file:../rich-text",
-		"lodash": "^4.17.21",
 		"rememo": "^4.0.0",
 		"uuid": "^8.3.0"
 	},

packages/annotations/src/store/reducer.js

@@ -1,8 +1,3 @@
-/**
- * External dependencies
- */
-import { mapValues } from 'lodash';
-
 /**
  * Filters an array based on the predicate, but keeps the reference the same if
  * the array hasn't changed.
@@ -20,6 +15,23 @@ function filterWithReference( collection, predicate ) {
 		: filteredCollection;
 }
 
+/**
+ * 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 ),
+		} ),
+		{}
+	);
+
 /**
  * Verifies whether the given annotations is a valid annotation.
  *

packages/annotations/src/store/selectors.js

@@ -2,7 +2,6 @@
  * External dependencies
  */
 import createSelector from 'rememo';
-import { flatMap } from 'lodash';
 
 /**
  * Shared reference to an empty array for cases where it is important to avoid
@@ -79,7 +78,5 @@ export const __experimentalGetAnnotationsForRichText = createSelector(
  * @return {Array} All annotations currently applied.
  */
 export function __experimentalGetAnnotations( state ) {
-	return flatMap( state, ( annotations ) => {
-		return annotations;
-	} );
+	return Object.values( state ).flat();
 }