小编Ami*_*gar的帖子

interface ExampleType {
  [key: string]: string | (() => string);
}

const testObj: ExampleType = {
  firstName: "Peter",
  lastName: "Parker",
  gender: "male",
  getFullName: () => "I am Peter Parker",
};

const { firstName, lastName, getFullName } = testObj;


console.log(getFullName()); // this does  not works

if (typeof getFullName === "function") {
    console.log(getFullName()) // this works
}

我收到以下错误：**此表达式不可调用。并非所有类型为 'string | 的成分| (() => string)' 是可调用的。'string' 类型没有调用签名。**