Ecmascript next 动态对象属性javascript

javascript es6或es next是否有语法来实现以下行为

let t = {
    text: 'hello world',
    [shouldShow ? ...{'show' : 'test text'} : ''],
    test: 21
}

我想如果shouldShow是真的，那么对象t应该是真的

{
    text: 'hello world',
    show: 'test text',
    test: 21
}

如果shouldShow为false，则对象t将为

{
    text: 'hello world',
    test: 21
}

---

我知道，我可以用if/else实现这一点，但我想问的是，是否有一种语法可以只用于一行代码

如果希望show属性在shouldShow为false时出现，请尝试以下操作：

// this would give show:"" when shouldShow is false, else it will give show="test text"
let shouldShow = false;
let t = {
  text: "hello world",
  show: shouldShow ? "test text" : "",
  test: 21
}; 

如果您希望将其从对象本身中删除，请尝试此操作

// this would make show="test text" when shouldShow is true else remove it from "t"
let shouldShow = true;
let t = {
  text: "hello world",
  test: 21
};
t = shouldShow ? { ...t, show: "test text" } : t; 

---

希望这能解决：

如果希望show属性在shouldShow为false时出现，请尝试以下操作：

// this would give show:"" when shouldShow is false, else it will give show="test text"
let shouldShow = false;
let t = {
  text: "hello world",
  show: shouldShow ? "test text" : "",
  test: 21
}; 

如果您希望将其从对象本身中删除，请尝试此操作

// this would make show="test text" when shouldShow is true else remove it from "t"
let shouldShow = true;
let t = {
  text: "hello world",
  test: 21
};
t = shouldShow ? { ...t, show: "test text" } : t;