export {}
type ObjType = { myName: string; Person: (m: string) => void }

let obj: ObjType = { myName: 'zz', Person: () => {} }

// 定义函数的时候，this的烈性，必须和调用的时候类型一致
function Person(this: ObjType, name: string) {
  this.myName = name
}
obj.Person = Person
obj.Person('lisa')