如何模拟内部函数的实现？

function outerFunction() {
  function innerFunction() {
    console.log("This is the inner function");
  }
  return innerFunction;
}

const myFunction = outerFunction();
myFunction(); // 输出：This is the inner function

const myObject = {
  innerFunction: function() {
    console.log("This is the inner function");
  }
};

myObject.innerFunction(); // 输出：This is the inner function

const myFunction = (function() {
  function innerFunction() {
    console.log("This is the inner function");
  }
  return innerFunction;
})();

myFunction(); // 输出：This is the inner function