From 47cb37039c56be09a678ac2597663e2bd06d739f Mon Sep 17 00:00:00 2001
From: "S. Andrew Sheppard" <andrew@wq.io>
Date: Fri, 26 Aug 2022 13:52:10 +0900
Subject: [PATCH] ensure Icon exists

---
 packages/material/src/components/IconButton.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/packages/material/src/components/IconButton.js b/packages/material/src/components/IconButton.js
index 953f0564..c9653a4b 100644
--- a/packages/material/src/components/IconButton.js
+++ b/packages/material/src/components/IconButton.js
@@ -5,6 +5,9 @@ import PropTypes from 'prop-types';
 
 export default function IconButton({ icon, ...rest }) {
     const Icon = useIcon(icon);
+    if (!Icon) {
+        throw new Error(`"${icon}" is not a registered icon!`);
+    }
     return (
         <MuiIconButton {...rest}>
             <Icon />