typescript - TypeScript : No type error when passing an array with object literals as a reference/variable

Question

当将带有对象常量的数组传递给函数时，出现了预期的错误，因为它们在分配给它们的类型中没有对应的属性。

type hasAge = {
  age: number;
};

function getOldest(items: hasAge[]): hasAge {
  return items.sort((a, b) => b.age - a.age)[0];
}

let oldest = getOldest([
  { age: 22, name: "Pete" },
  { age: 87, name: "Daniel" },
  { age: 36, name: "Jessica" },
]); //Type error - Object literal may only specify known properties

将数组作为变量传递时，不会检测到任何问题:

let people = [
  { age: 22, name: "Pete" },
  { age: 87, name: "Daniel" },
  { age: 36, name: "Jessica" },
];
let oldest = getOldest(people);

甚至破坏数组也不会引起问题:

let people = [
  { age: 22, name: "Pete" },
  { age: 87, name: "Daniel" },
  { age: 36, name: "Jessica" },
];
let oldest = getOldest([...people]);

我想念什么？不是所有的函数调用都基本相同吗？

Answer 1

当您传递数组类型脚本时，它使用的是鸭子类型，因此只会困扰于必需的属性，而不是多余的属性。
https://www.typescriptlang.org/docs/handbook/interfaces.html
对于第一种情况，当您使用对象文字时，请参见此
Why am I getting an error "Object literal may only specify known properties"?