function class0() {
    class1.prototype.constructor(this, "666666")
    this.a = "123";
}

class0.prototype.constructor = class0;
class0.prototype.qwe =
    function () {
        console.log(this.a)
        console.log(this.b)
        console.log(this.c)
        console.log(this.d)
    };
class0.prototype.a = 1;
class0.prototype.b = 2;

function class1(arg) {
    this.d = arg;
}

class1.prototype.constructor = class1;
class1.prototype.qwe =
    function () {
        console.log("11111111111111111111")
    };
class1.prototype.a = 1;
class1.prototype.b = 2;