From c4321e12a6231f6f407e783a648c9f52a9abc81a Mon Sep 17 00:00:00 2001
From: Francesco Cioria <firefelix@gmail.com>
Date: Wed, 13 Dec 2017 10:42:33 +0100
Subject: [PATCH] set boxSizing by default to "content-box" if
 this.props.maxRows is passed

---
 src/TextareaAutosize.tsx | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/TextareaAutosize.tsx b/src/TextareaAutosize.tsx
index 5173a20..2b40506 100644
--- a/src/TextareaAutosize.tsx
+++ b/src/TextareaAutosize.tsx
@@ -121,12 +121,16 @@ export default class TextareaAutosize extends React.Component<TextareaAutosize.P
       saveDOMNodeRef
     } = this;
 
-    const maxHeight = maxRows && lineHeight ? lineHeight * maxRows : null;
+    const maxHeight = typeof maxRows !== 'undefined' && lineHeight ? lineHeight * maxRows : null;
 
     return {
       ...props,
       saveDOMNodeRef,
-      style: maxHeight ? { ...style, maxHeight } : style,
+      style: maxHeight ? {
+        boxSizing: typeof maxRows !== 'undefined' ? 'content-box' : undefined,
+        ...style,
+        maxHeight
+      } : style,
       onChange: this.onChange
     };
   }