gistfile1.txt

class AAA{
    constructor(){
        console.log("aaa")
    }
}

class BBB{
    constructor(){
        console.log("bbb")
    }
}

class Hoge<A , B>{
    constructor(public a : A , public b : B){
        console.log("CCCCC")
    }
}

class Fuga<B> extends Hoge<AAA , B>{
}

interface Piyo<Y>{
    a : {new(p : AAA , q : Y) :Fuga<Y>}
}

class Bar implements Piyo<BBB>{
    a = Fuga
    constructor(){
        new this.a(new AAA(),new BBB())
    }
}

new Bar()