摘要：
Consider this discriminated union called Fruit: type Fruit = | { name: "apple"; color: "red"; } | { name: "banana"; color: "yellow"; } | { name: "oran 阅读全文
摘要：
We start with a Values interface: interface Values { email: string; firstName: string; lastName: string; } We want a union of tuple [key, value]as res 阅读全文
摘要：
We have a type Route that is a discriminated union of the possible routes in the application. Each route has the properties search and route type Rout 阅读全文