From ea8ad329a2d39ef3ecb137df57b5b8fe1de66110 Mon Sep 17 00:00:00 2001
From: Matt <github@nospam.33m.co>
Date: Mon, 21 Sep 2020 14:49:01 +0100
Subject: [PATCH] don't use warning

---
 packages/material-ui-lab/src/Alert/Alert.d.ts |  1 +
 packages/material-ui-lab/src/Alert/Alert.js   | 26 +++++++++----------
 .../src/AlertTitle/AlertTitle.d.ts            |  1 +
 .../src/AlertTitle/AlertTitle.js              | 26 +++++++++----------
 4 files changed, 27 insertions(+), 27 deletions(-)

diff --git a/packages/material-ui-lab/src/Alert/Alert.d.ts b/packages/material-ui-lab/src/Alert/Alert.d.ts
index e761cb5c2ac815..7dca614cfefb44 100644
--- a/packages/material-ui-lab/src/Alert/Alert.d.ts
+++ b/packages/material-ui-lab/src/Alert/Alert.d.ts
@@ -1,2 +1,3 @@
 import Alert from '@material-ui/core/Alert';
+
 export default Alert;
diff --git a/packages/material-ui-lab/src/Alert/Alert.js b/packages/material-ui-lab/src/Alert/Alert.js
index f71dce6dbacf0b..e15e2229123781 100644
--- a/packages/material-ui-lab/src/Alert/Alert.js
+++ b/packages/material-ui-lab/src/Alert/Alert.js
@@ -1,23 +1,21 @@
 import React from 'react';
-import warning from 'warning';
 import Alert from '@material-ui/core/Alert';
 
-let warnedOnce = false;
- 
 export default React.forwardRef(function DeprecatedAlert(props, ref) {
+  let warnedOnce = false;
 
-  warning(
-    warnOnce,
+  if (!warnedOnce) {
+    console.warn(
+      [
+        'Material-UI: the Alert component was moved from the lab to the core.',
+        '',
+        "You should use `import { Alert } from '@material-ui/core'`",
+        "or `import Alert from '@material-ui/core/Alert'`",
+      ].join('\n'),
+    );
 
-    [
-      'Material-UI: the Alert component was moved from the lab to the core.',
-      '',
-      "You should use `import { Alert } from '@material-ui/core'`",
-      "or `import Alert from '@material-ui/core/Alert'`",
-    ].join('\n'),
-  );
-
-  warnOnce = true;
+    warnedOnce = true;
+  }
 
   return <Alert ref={ref} {...props} />;
 });
diff --git a/packages/material-ui-lab/src/AlertTitle/AlertTitle.d.ts b/packages/material-ui-lab/src/AlertTitle/AlertTitle.d.ts
index e636fcee3cdfd2..b19569472d820e 100644
--- a/packages/material-ui-lab/src/AlertTitle/AlertTitle.d.ts
+++ b/packages/material-ui-lab/src/AlertTitle/AlertTitle.d.ts
@@ -1,2 +1,3 @@
 import AlertTitle from '@material-ui/core/AlertTitle';
+
 export default AlertTitle;
diff --git a/packages/material-ui-lab/src/AlertTitle/AlertTitle.js b/packages/material-ui-lab/src/AlertTitle/AlertTitle.js
index 77c08fd55ddbb0..f39ae66b7aae44 100644
--- a/packages/material-ui-lab/src/AlertTitle/AlertTitle.js
+++ b/packages/material-ui-lab/src/AlertTitle/AlertTitle.js
@@ -1,21 +1,21 @@
 import React from 'react';
-import warning from 'warning';
 import AlertTitle from '@material-ui/core/AlertTitle';
 
 export default React.forwardRef(function DeprecatedAlertTitle(props, ref) {
-  let warnOnce = false;
+  let warnedOnce = false;
 
-  warning(
-    warnOnce,
-    [
-      'Material-UI: the AlertTitle component was moved from the lab to the core.',
-      '',
-      "You should use `import { AlertTitle } from '@material-ui/core'`",
-      "or `import AlertTitle from '@material-ui/core/AlertTitle'`",
-    ].join('\n'),
-  );
-  
-  warnOnce = true;
+  if (!warnedOnce) {
+    console.warn(
+      [
+        'Material-UI: the AlertTitle component was moved from the lab to the core.',
+        '',
+        "You should use `import { AlertTitle } from '@material-ui/core'`",
+        "or `import AlertTitle from '@material-ui/core/AlertTitle'`",
+      ].join('\n'),
+    );
+
+    warnedOnce = true;
+  }
 
   return <AlertTitle ref={ref} {...props} />;
 });