相关疑难解决方法(0)

这是代码

class A {
    x = 0;
    y = 0;
    visible = false;
    render() {

    }
}

type RemoveProperties<T> = {
    readonly [P in keyof T]: T[P] extends Function ? T[P] : never//;
};


var a = new A() as RemoveProperties<A>
a.visible // never
a.render() // ok!

我想通过RemoveProperties删除"visible/x/y"属性,但我只能用never替换它