From bdc27a1e46f93c93dd64499153adab3acfb84dfe Mon Sep 17 00:00:00 2001
From: Paul Trowbridge <paul@hptrow.me>
Date: Sun, 18 Apr 2021 23:17:02 -0400
Subject: [PATCH] stop the game

---
 src/index.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/index.js b/src/index.js
index 6f0fe35..0a60d3f 100644
--- a/src/index.js
+++ b/src/index.js
@@ -21,6 +21,9 @@ function Square(props){
 
     handleClick(i) {
         const squares = this.state.squares.slice();
+        if (calculateWinner(squares) || squares[i]) {
+          return;
+        }
         squares[i] = this.state.xIsNext ? 'X' : 'O';
         this.setState(
           {