From 816c1643d86cb0d4a91cd5d455aaf296d33c7aee Mon Sep 17 00:00:00 2001
From: Sebastian Silbermann <silbermann.sebastian@gmail.com>
Date: Tue, 17 Mar 2020 22:33:36 +0100
Subject: [PATCH] skip rollup warning

---
 packages/material-ui/scripts/rollup.config.js | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/packages/material-ui/scripts/rollup.config.js b/packages/material-ui/scripts/rollup.config.js
index fc02426ceea1e9..6b5bd77a178874 100644
--- a/packages/material-ui/scripts/rollup.config.js
+++ b/packages/material-ui/scripts/rollup.config.js
@@ -41,7 +41,21 @@ const commonjsOptions = {
 };
 
 function onwarn(warning) {
-  throw Error(warning.message);
+  let ignoreWarning = false;
+  if (
+    warning.code === 'UNUSED_EXTERNAL_IMPORT' &&
+    warning.source === 'react' &&
+    warning.names.filter(identifier => identifier !== 'useDebugValue').length === 0
+  ) {
+    // skip
+    // import * as React from 'react'
+    // if (__DEV__) React.useDebugValue()
+    ignoreWarning = true;
+  }
+
+  if (!ignoreWarning) {
+    throw Error(warning.message);
+  }
 }
 
 export default [