From 907a65e1289bcdf15d954c92ddbdc3031c6824c4 Mon Sep 17 00:00:00 2001
From: Marin Atanasov <8436925+tyxla@users.noreply.github.com>
Date: Mon, 5 Sep 2022 17:10:34 +0300
Subject: [PATCH] Lodash: Remove _.first() and _.last() from block editor store
 (#43854)

---
 packages/block-editor/src/store/reducer.js   | 18 ++++++++----------
 packages/block-editor/src/store/selectors.js | 19 +++++--------------
 2 files changed, 13 insertions(+), 24 deletions(-)

diff --git a/packages/block-editor/src/store/reducer.js b/packages/block-editor/src/store/reducer.js
index 73055bdef71996..706b3b41893d3d 100644
--- a/packages/block-editor/src/store/reducer.js
+++ b/packages/block-editor/src/store/reducer.js
@@ -4,8 +4,6 @@
 import {
 	flow,
 	reduce,
-	first,
-	last,
 	omit,
 	without,
 	mapValues,
@@ -1004,13 +1002,10 @@ export const blocks = flow(
 
 			case 'MOVE_BLOCKS_UP': {
 				const { clientIds, rootClientId = '' } = action;
-				const firstClientId = first( clientIds );
+				const firstClientId = clientIds[ 0 ];
 				const subState = state[ rootClientId ];
 
-				if (
-					! subState.length ||
-					firstClientId === first( subState )
-				) {
+				if ( ! subState.length || firstClientId === subState[ 0 ] ) {
 					return state;
 				}
 
@@ -1029,11 +1024,14 @@ export const blocks = flow(
 
 			case 'MOVE_BLOCKS_DOWN': {
 				const { clientIds, rootClientId = '' } = action;
-				const firstClientId = first( clientIds );
-				const lastClientId = last( clientIds );
+				const firstClientId = clientIds[ 0 ];
+				const lastClientId = clientIds[ clientIds.length - 1 ];
 				const subState = state[ rootClientId ];
 
-				if ( ! subState.length || lastClientId === last( subState ) ) {
+				if (
+					! subState.length ||
+					lastClientId === subState[ subState.length - 1 ]
+				) {
 					return state;
 				}
 
diff --git a/packages/block-editor/src/store/selectors.js b/packages/block-editor/src/store/selectors.js
index 13ab5eb264cad5..5c3ca61ead71fe 100644
--- a/packages/block-editor/src/store/selectors.js
+++ b/packages/block-editor/src/store/selectors.js
@@ -1,17 +1,7 @@
 /**
  * External dependencies
  */
-import {
-	castArray,
-	first,
-	last,
-	map,
-	reduce,
-	some,
-	find,
-	filter,
-	orderBy,
-} from 'lodash';
+import { castArray, map, reduce, some, find, filter, orderBy } from 'lodash';
 import createSelector from 'rememo';
 
 /**
@@ -798,7 +788,7 @@ export const getMultiSelectedBlocks = createSelector(
  * @return {?string} First block client ID in the multi-selection set.
  */
 export function getFirstMultiSelectedBlockClientId( state ) {
-	return first( getMultiSelectedBlockClientIds( state ) ) || null;
+	return getMultiSelectedBlockClientIds( state )[ 0 ] || null;
 }
 
 /**
@@ -810,7 +800,8 @@ export function getFirstMultiSelectedBlockClientId( state ) {
  * @return {?string} Last block client ID in the multi-selection set.
  */
 export function getLastMultiSelectedBlockClientId( state ) {
-	return last( getMultiSelectedBlockClientIds( state ) ) || null;
+	const selectedClientIds = getMultiSelectedBlockClientIds( state );
+	return selectedClientIds[ selectedClientIds.length - 1 ] || null;
 }
 
 /**
@@ -2633,7 +2624,7 @@ export const __experimentalGetActiveBlockIdByBlockNames = createSelector(
 		);
 		if ( entityAreaParents ) {
 			// Last parent closest/most interior.
-			return last( entityAreaParents );
+			return entityAreaParents[ entityAreaParents.length - 1 ];
 		}
 		return null;
 	},