为什么我的闭包函数不想在 if 语句中重新分配其父函数变量？

我创建了这个工厂函数，用于描述游戏逻辑。我使用内部函数来切换游戏中的玩家。问题是，当我尝试从内部函数中重新分配当前玩家时，它不起作用。当前的玩家永远不会改变。我想这是关于封闭的一些事情，我并没有真正理解。你能向我解释一下我缺少什么吗？这是我正在处理的代码片段：

const game = (() => {
    let player1 = "Jim";
    let player2 = "Mary";
    let currentPlayer = player1;

    const switchPlayers = () => { //This closure function is supposed to reassign the value of currentPlayer above. But it does not do it.
        if (currentPlayer === player1) {
            currentPlayer = player2;
        } else {
            currentPlayer = player1;
        }
        return currentPlayer;
    };

    return {currentPlayer, switchPlayers};

})();

game.switchPlayers // works as needed and switches the players every time it is invoked but does not reassign the variable within its parent function;
game.currentPlayer // does not get reassigned, when switchPlayers function is invoked, and returns player1 as was assigned at the start;

It does重新分配变量。

问题是您返回的对象具有以下属性值的副本这些变量的引用，而不是对变量的引用。

So let currentPlayer被改变了但是game.currentPlayer仍然包含原始值的副本。

摆脱变量，只修改对象属性。

const game = (function() {
  const player1 = "Jim";
  const player2 = "Mary";
  let o = {
    currentPlayer: player1
  };

  const switchPlayers = () => {
    if (o.currentPlayer === player1) {
      o.currentPlayer = player2;
    } else {
      o.currentPlayer = player1;
    }
    return o.currentPlayer;
  };

  o.switchPlayers = switchPlayers;
  return o;
})();

console.log(game.currentPlayer);
console.log(game.currentPlayer);
console.log(game.switchPlayers());
console.log(game.currentPlayer);
console.log(game.currentPlayer);