class Person {
name: string
age: number
constructor(name: string, age: number) {
this.name = name
this.age = age
}
}
function createInstance(ctor: new (...params) => T, ...args): T {
return new ctor(...args)
}
const person = createInstance(Person, 123, 20) // should be error: 类型“123”的参数不能赋给类型“string”的参数
console.log(person.name) // 123
console.log(person.name.length) // undefined
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