检查 class 类型是否扩展了另一个 class?

Check if class type extends another class?

我很难表达我的问题,以下面这段代码为例。

class Foo {}

class Bar extends Foo {}

const myFct = (bar: typeof Bar) => {
    if(bar instanceof Foo) { 
        // I want to check if Bar extends Foo 
        // bar is not an instance so instanceof won't do it
    }

}

如何检查 class Bar 从 typeof 扩展 Foo?

试试这个:

class Foo {}

class Bar extends Foo {}

const myFct = (bar: typeof Bar) => {
    if(bar.prototype instanceof Foo) { 
        // I want to check if Bar extends Foo 
        // bar is not an instance so instanceof won't do it
    }

}