如何使对象键为字符串且值为混合类型的对象的类型数组流动

function getTypeArray(obj) {
  var typeArray = [];

  for (var key in obj) {
    if (obj.hasOwnProperty(key)) {
      var value = obj[key];
      var type = typeof value;

      if (typeArray.indexOf(type) === -1) {
        typeArray.push(type);
      }
    }
  }

  return typeArray;
}

// 示例用法
var obj = {
  key1: "value",
  key2: 123,
  key3: true,
  key4: { nestedKey: "nestedValue" },
  key5: ["item1", "item2"]
};

var result = getTypeArray(obj);
console.log(result); // 输出 ["string", "number", "boolean", "object", "object"]