From b818bad3deb7ca776ec4dc6f1c9bb956d1df58db Mon Sep 17 00:00:00 2001
From: Haroen Viaene <hello@haroen.me>
Date: Thu, 16 May 2019 11:29:35 +0200
Subject: [PATCH] refactor(lodash): remove difference (#2455)

Both are arrays & always defined, so it's really enough to find all props in this._props (prevProps), but not in `props`
---
 .../src/connectors/connectConfigure.js                       | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/packages/react-instantsearch-core/src/connectors/connectConfigure.js b/packages/react-instantsearch-core/src/connectors/connectConfigure.js
index 928353fd91..765bbb64c1 100644
--- a/packages/react-instantsearch-core/src/connectors/connectConfigure.js
+++ b/packages/react-instantsearch-core/src/connectors/connectConfigure.js
@@ -1,4 +1,4 @@
-import { omit, difference } from 'lodash';
+import { omit } from 'lodash';
 import createConnector from '../core/createConnector';
 import {
   refineValue,
@@ -22,8 +22,9 @@ export default createConnector({
   transitionState(props, prevSearchState, nextSearchState) {
     const id = getId();
     const { children, contextValue, indexContextValue, ...items } = props;
+    const propKeys = Object.keys(props);
     const nonPresentKeys = this._props
-      ? difference(Object.keys(this._props), Object.keys(props))
+      ? Object.keys(this._props).filter(prop => propKeys.indexOf(prop) === -1)
       : [];
     this._props = props;
     const nextValue = {