对已知的一些类型定义名称
type 类型名 = ...
# 举个例子
type Gender = "男" | "女";
type User = {
name: string,
age: number,
gender: Gender
}
let u: User;
u = {
name: "sadas",
gender: "男",
age: 20
}
function getUsers(g: Gender): User[] {
return [];
}