refactor(react): remove state

react/tic-tac-toe/src/App.tsx

@@ -74,16 +74,15 @@ export default function Game() {
     Array(9).fill(null),
   ]);
   const [currentMove, setCurrentMove] = useState<number>(0);
+  const xIsNext = currentMove % 2 === 0;
   const currentSquares = history[currentMove];
   function handlePlay(nextSquares: Array<string | null>): void {
     const nextHistory = [...history.slice(0, currentMove + 1), nextSquares];
     setHistory(nextHistory);
     setCurrentMove(nextHistory.length - 1);
-    setXIsNext(!xIsNext);
   }
   function jumpTo(nextMove: number): void {
     setCurrentMove(nextMove);
-    setXIsNext(nextMove % 2 === 0);
   }
 
   const moves = history.map((squares: Array<string | null>, move: number) => {