From 9235bbdc7b9354be821bce30195f684a6dfbd6e9 Mon Sep 17 00:00:00 2001
From: Minh Nguyen <minhnguyenxx@gmail.com>
Date: Tue, 7 Apr 2020 23:02:11 +0100
Subject: [PATCH] [core] Fix TypeScript type for `children`

This is a follow-up to #20450.

See https://github.com/mui-org/material-ui/pull/20450#issuecomment-610303516
---
 packages/material-ui-lab/src/AvatarGroup/AvatarGroup.d.ts | 2 +-
 packages/material-ui/src/Badge/Badge.d.ts                 | 2 +-
 packages/material-ui/src/StepContent/StepContent.d.ts     | 2 +-
 packages/material-ui/src/StepLabel/StepLabel.d.ts         | 2 +-
 4 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/packages/material-ui-lab/src/AvatarGroup/AvatarGroup.d.ts b/packages/material-ui-lab/src/AvatarGroup/AvatarGroup.d.ts
index 17c3ea3469700b..b2f90e471bb5c1 100644
--- a/packages/material-ui-lab/src/AvatarGroup/AvatarGroup.d.ts
+++ b/packages/material-ui-lab/src/AvatarGroup/AvatarGroup.d.ts
@@ -6,7 +6,7 @@ export interface AvatarGroupProps
   /**
    * The avatars to stack.
    */
-  children: React.ReactNode;
+  children?: React.ReactNode;
   /**
    * Max avatars to show before +x.
    */
diff --git a/packages/material-ui/src/Badge/Badge.d.ts b/packages/material-ui/src/Badge/Badge.d.ts
index 91103a3ea2336c..c4ffa0f26105e3 100644
--- a/packages/material-ui/src/Badge/Badge.d.ts
+++ b/packages/material-ui/src/Badge/Badge.d.ts
@@ -23,7 +23,7 @@ export interface BadgeTypeMap<P = {}, D extends React.ElementType = 'div'> {
     /**
      * The badge will be added relative to this node.
      */
-    children: React.ReactNode;
+    children?: React.ReactNode;
     /**
      * The color of the component.
      * It supports those theme colors that make sense for this component.
diff --git a/packages/material-ui/src/StepContent/StepContent.d.ts b/packages/material-ui/src/StepContent/StepContent.d.ts
index 2dad8dc2b3658a..a2ec1e47ee5967 100644
--- a/packages/material-ui/src/StepContent/StepContent.d.ts
+++ b/packages/material-ui/src/StepContent/StepContent.d.ts
@@ -7,7 +7,7 @@ export interface StepContentProps
   extends StandardProps<React.HTMLAttributes<HTMLDivElement>, StepContentClasskey> {
   active?: boolean;
   alternativeLabel?: boolean;
-  children: React.ReactNode;
+  children?: React.ReactNode;
   completed?: boolean;
   last?: boolean;
   optional?: boolean;
diff --git a/packages/material-ui/src/StepLabel/StepLabel.d.ts b/packages/material-ui/src/StepLabel/StepLabel.d.ts
index 31c4f0ebce1801..fe1ff242495a0d 100644
--- a/packages/material-ui/src/StepLabel/StepLabel.d.ts
+++ b/packages/material-ui/src/StepLabel/StepLabel.d.ts
@@ -8,7 +8,7 @@ export interface StepLabelProps
   extends StandardProps<React.HTMLAttributes<HTMLDivElement>, StepLabelClasskey> {
   active?: boolean;
   alternativeLabel?: boolean;
-  children: React.ReactNode;
+  children?: React.ReactNode;
   completed?: boolean;
   disabled?: boolean;
   error?: boolean;