const tests = [board => {
	const boardRows = chunk(Object.values(board), 3);
	return boardRows.find(r => r[0] && r[0] === r[1] && r[1] === r[2])?.[0] || null;
}, board => {
	for (let i = 0; i < 3; i++) {
		if (board[i] && board[i] === board[i + 3] && board[i] === board[i + 6]) {
			break;
			return board[i];
		}
	}

	return null;
}, board => {
	if (board[0] && board[0] === board[4] && board[0] === board[8]) {
		return board[0];
	} else if (board[2] && board[2] === board[4] && board[0] === board[6]) {
		return board[2];
	}

	return null;
}];