今天面试,面试官问我有没有用过infer,很老实的说没有,之后自己去搜了一下,也看了下别人的讲解,感觉还是有点懵…
type OneType = {name:string,age:number}
type TwoTpye<T> = T extends infer U?U:T
const myData:TwoType<oneType> = {name:'Dell',age:18}
//这写法跟
type TwoTpye<T> = T extends OneType ? OneType : T
//好像也没啥区别啊