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Chris Schuhmacher
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Created React Tic Tac Toe game
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lines changed

‎README.md

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‎package.json

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{
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"name": "tic-tac-toe",
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"version": "0.1.0",
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"private": true,
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"dependencies": {
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"node-sass-chokidar": "^0.0.3",
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"react": "^16.1.1",
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"react-dom": "^16.1.1",
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"react-scripts": "1.0.17"
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},
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"scripts": {
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"build-css": "node-sass-chokidar src/ -o src/",
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"watch-css": "npm run build-css && node-sass-chokidar src/ -o src/ --watch --recursive",
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"start": "react-scripts start",
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"build": "react-scripts build",
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"test": "react-scripts test --env=jsdom",
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"eject": "react-scripts eject"
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}
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}

‎public/favicon.ico

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‎public/index.html

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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
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<meta name="theme-color" content="#000000">
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<!--
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manifest.json provides metadata used when your web app is added to the
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homescreen on Android. See https://developers.google.com/web/fundamentals/engage-and-retain/web-app-manifest/
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-->
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<link rel="manifest" href="%PUBLIC_URL%/manifest.json">
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<link rel="shortcut icon" href="%PUBLIC_URL%/favicon.ico">
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<!--
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Notice the use of %PUBLIC_URL% in the tags above.
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It will be replaced with the URL of the `public` folder during the build.
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Only files inside the `public` folder can be referenced from the HTML.
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Unlike "/favicon.ico" or "favicon.ico", "%PUBLIC_URL%/favicon.ico" will
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work correctly both with client-side routing and a non-root public URL.
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Learn how to configure a non-root public URL by running `npm run build`.
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-->
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<title>React Tac Toe</title>
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</head>
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<body>
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<noscript>
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You need to enable JavaScript to run this app.
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</noscript>
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<div id="root"></div>
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<!--
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This HTML file is a template.
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If you open it directly in the browser, you will see an empty page.
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You can add webfonts, meta tags, or analytics to this file.
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The build step will place the bundled scripts into the <body> tag.
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To begin the development, run `npm start` or `yarn start`.
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To create a production bundle, use `npm run build` or `yarn build`.
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-->
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</body>
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</html>

‎public/manifest.json

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{
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"short_name": "React App",
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"name": "Create React App Sample",
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"icons": [
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{
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"src": "favicon.ico",
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"sizes": "64x64 32x32 24x24 16x16",
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"type": "image/x-icon"
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}
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],
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"start_url": "./index.html",
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"display": "standalone",
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"theme_color": "#000000",
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"background_color": "#ffffff"
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}

‎src/index.css

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body {
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font: 14px "Century Gothic", Futura, sans-serif;
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margin: 20px;
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}
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ol, ul {
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padding-left: 30px;
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}
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.board-row:after {
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clear: both;
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content: "";
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display: table;
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}
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.status {
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margin-bottom: 10px;
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}
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.square {
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background: #fff;
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border: 1px solid #999;
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float: left;
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font-size: 24px;
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font-weight: bold;
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line-height: 34px;
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height: 34px;
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margin-right: -1px;
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margin-top: -1px;
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padding: 0;
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text-align: center;
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width: 34px;
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}
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.square:focus {
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outline: none;
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}
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.kbd-navigation .square:focus {
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background: #ddd;
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}
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.game {
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display: flex;
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flex-direction: row;
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}
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.game-info {
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margin-left: 20px;
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}

‎src/index.js

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import React from 'react';
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import ReactDOM from 'react-dom';
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import './index.css';
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function Square(props) {
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return (
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<button className="square" onClick={props.onClick}>
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{props.value}
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</button>
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);
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}
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class Board extends React.Component {
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renderSquare(i) {
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return (
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<Square
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value={this.props.squares[i]}
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onClick={() => this.props.onClick(i)}
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/>
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);
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}
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render() {
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return (
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<div>
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<div className="board-row">
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{this.renderSquare(0)}
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{this.renderSquare(1)}
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{this.renderSquare(2)}
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</div>
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<div className="board-row">
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{this.renderSquare(3)}
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{this.renderSquare(4)}
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{this.renderSquare(5)}
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</div>
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<div className="board-row">
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{this.renderSquare(6)}
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{this.renderSquare(7)}
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{this.renderSquare(8)}
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</div>
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</div>
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);
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}
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}
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class Game extends React.Component {
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constructor() {
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super();
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this.state = {
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history: [{
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squares: Array(9).fill(null)
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}],
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stepNumber: 0,
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xIsNext: true
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}
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}
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handleClick(i) {
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const history = this.state.history.slice(0, this.state.stepNumber + 1);
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const current = history[history.length - 1];
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const squares = current.squares.slice();
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if(calculateWinner(squares) || squares[i]) {
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return;
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}
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squares[i] = this.state.xIsNext ? 'X' : 'O';
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this.setState({
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history: history.concat([{
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squares: squares
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}]),
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stepNumber: history.length,
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xIsNext: !this.state.xIsNext
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});
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}
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jumpTo(step) {
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this.setState({
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stepNumber: step,
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xIsNext: (step % 2) === 0
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});
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}
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render() {
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const history = this.state.history;
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const current = history[this.state.stepNumber];
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const winner = calculateWinner(current.squares);
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const moves = history.map((step, move) => {
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const desc = move ?
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'Go to move #' + move :
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'Go to game start';
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return (
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<li key={move}>
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<button onClick={() => this.jumpTo(move)}>{desc}</button>
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</li>
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);
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});
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let status;
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if(winner) {
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status = 'Winner: ' + winner;
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} else {
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status = 'Next player: ' + (this.state.xIsNext ? 'X' : 'O');
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}
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return (
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<div className="game">
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<div className="game-board">
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<Board
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squares={current.squares}
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onClick={(i) => this.handleClick(i)}
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/>
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</div>
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<div className="game-info">
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<div>{status}</div>
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<ol>{moves}</ol>
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</div>
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</div>
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);
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}
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}
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// ========================================
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ReactDOM.render(
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<Game />,
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document.getElementById('root')
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);
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function calculateWinner(squares) {
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const lines = [
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[0, 1, 2],
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[3, 4, 5],
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[6, 7, 8],
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[0, 3, 6],
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[1, 4, 7],
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[2, 5, 8],
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[0, 4, 8],
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[2, 4, 6]
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];
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for(let i = 0; i < lines.length; i++) {
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const [a, b, c] = lines[i];
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if(squares[a] && squares[a] === squares[b] && squares[a] === squares[c]){
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return squares[a];
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}
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}
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return null;
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}

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