From dec61e61a39e0c7be9d6a3d4de7de95a49093572 Mon Sep 17 00:00:00 2001
From: David Stone <david@nnucomputerwhiz.com>
Date: Wed, 15 Apr 2020 10:56:42 -0600
Subject: [PATCH] Extern some more libs to save on js bundle size

---
 webpack.config.js | 25 ++++++++++++++++++-------
 1 file changed, 18 insertions(+), 7 deletions(-)

diff --git a/webpack.config.js b/webpack.config.js
index 84c0fd276..c7b688b64 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -130,13 +130,24 @@ module.exports = {
 		hot: true,
 		liveReload: false,
 	},
-	externals: {
-		'jquery': 'jQuery',
-		'cheerio': 'window',
-		'react/addons': true,
-		'react/lib/ExecutionEnvironment': true,
-		'react/lib/ReactContext': true,
-	},
+	externals: Object.assign(
+		{},
+		{
+			'jquery': 'jQuery',
+			'cheerio': 'window',
+			'react/addons': true,
+			'react/lib/ExecutionEnvironment': true,
+			'react/lib/ReactContext': true,
+			moment: 'moment',
+			lodash: 'lodash',
+			// WordPress components are too heavy to extern because we only use a few components.
+		},
+		! isDev ? {
+			// Dev mode cannot use external react-dom because HMR requires patched @hot-loader/react-dom
+			react: 'React',
+			'react-dom': 'ReactDOM',
+		} : undefined
+	),
 	module: {
 		rules: [
 			{