JavaScript objects

const team = {
  _players: [
    {
      firstName: 'Danila',
      lastName: 'Slabovat',
      age: 19
    },
    {
      firstName: 'Mark',
      lastName: 'GameMaster',
      age: 18
    },
    {
      firstName: 'Arseniy',
      lastName: 'Programátor',
      age: 18
    },
  ],
  _games: [
    {
      opponent: 'Dota',
      teamPoints: 44,
      opponentPoints: 9000
    },
    {
      opponent: 'programming',
      teamPoints: 25,
      opponentPoints: 1011
    },
    {
      opponent: 'chesky language',
      teamPoints: 39,
      opponentPoints: 100
    }
  ],
  get players(){
    return this._players;
  },
  get games(){
    return this._games;
  },
  addPlayer(firstName, lastName, age){
    let player = {
      firstName: firstName,
      lastName: lastName,
      age: age
    };

    this._players.push(player);
  },
  addGame (opponentTeamName, points, opponentPoints){
    let game = {
      opponent: opponentTeamName,
      teamPoints: points,
      opponentPoints: opponentPoints
    };

    this._games.push(game);
  }
}

team.addPlayer('Steph', 'Curry', 28);
team.addPlayer('Lisa', 'Leslie', 44);
team.addPlayer('Bugs', 'Bunny', 76);

console.log(team._players);

team.addGame('Fnatic', 6, 56);
team.addGame('NaVi', 10, 43);
team.addGame('Poseurs', 55, 3);

console.log(team._games);