From bdbeb002d00312421cba3a530daddb1a423c75a8 Mon Sep 17 00:00:00 2001
From: Simon Bos <simonbos9@gmail.com>
Date: Sun, 17 Nov 2019 13:39:24 +0100
Subject: [PATCH 1/2] Safe override of TransitionProps

---
 src/SnackbarItem/SnackbarItem.js | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/src/SnackbarItem/SnackbarItem.js b/src/SnackbarItem/SnackbarItem.js
index a50d5200..860ebb24 100644
--- a/src/SnackbarItem/SnackbarItem.js
+++ b/src/SnackbarItem/SnackbarItem.js
@@ -63,6 +63,7 @@ class SnackbarItem extends Component {
             iconVariant,
             snack,
             dense,
+            TransitionProps: otherTransitionProps = {},
             ...other
         } = this.props;
 
@@ -79,6 +80,7 @@ class SnackbarItem extends Component {
             anchorOrigin,
             requestClose,
             entered,
+            TransitionProps: singleTransitionProps = {},
             ...singleSnackProps
         } = snack;
 
@@ -90,6 +92,13 @@ class SnackbarItem extends Component {
             action: singleAction || singleContentProps.action || contentAction || action,
         };
 
+        const transitionProps = {
+            ...otherTransitionProps,
+            ...singleTransitionProps,
+            direction: getTransitionDirection(anchorOrigin),
+            onExited: this.handleExitedScreen,
+        };
+
         const ariaDescribedby = contentProps['aria-describedby'] || 'client-snackbar';
 
         let finalAction = contentProps.action;
@@ -119,10 +128,7 @@ class SnackbarItem extends Component {
                 onExited={this.handleExited(key)}
             >
                 <Snackbar
-                    TransitionProps={{
-                        direction: getTransitionDirection(anchorOrigin),
-                        onExited: this.handleExitedScreen,
-                    }}
+                    TransitionProps={transitionProps}
                     {...other}
                     {...singleSnackProps}
                     anchorOrigin={anchorOrigin}

From 09922ca39cdf621f6897540259a52a1bda4e9fd5 Mon Sep 17 00:00:00 2001
From: Hossein Dehnokhalaji <hossein.dehnavi98@yahoo.com>
Date: Sun, 1 Dec 2019 19:00:49 +0000
Subject: [PATCH 2/2] Allow transition direction to be overridden

---
 src/SnackbarItem/SnackbarItem.js | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/SnackbarItem/SnackbarItem.js b/src/SnackbarItem/SnackbarItem.js
index 860ebb24..f20886cc 100644
--- a/src/SnackbarItem/SnackbarItem.js
+++ b/src/SnackbarItem/SnackbarItem.js
@@ -93,9 +93,9 @@ class SnackbarItem extends Component {
         };
 
         const transitionProps = {
+            direction: getTransitionDirection(anchorOrigin),
             ...otherTransitionProps,
             ...singleTransitionProps,
-            direction: getTransitionDirection(anchorOrigin),
             onExited: this.handleExitedScreen,
         };
 
@@ -128,11 +128,11 @@ class SnackbarItem extends Component {
                 onExited={this.handleExited(key)}
             >
                 <Snackbar
-                    TransitionProps={transitionProps}
                     {...other}
                     {...singleSnackProps}
-                    anchorOrigin={anchorOrigin}
                     open={snack.open}
+                    anchorOrigin={anchorOrigin}
+                    TransitionProps={transitionProps}
                     classes={getSnackbarClasses(classes)}
                     onClose={this.handleClose(key)}
                     onEntered={this.handleEntered(key)}