Javascript init class properties before calling super

Question

i'm trying to convert my javascript classes from old style to new style. The problem is, that with the new style JavaScript requires that in a constructor super is called before accessing this. I have to extend a class that i am not the owner of and in that constructor it calls a method that i overwrite where i use my own properties. How to solve that?

class A {
    constructor() {
        this.create()
    }

    create() {}

    reload() {
        this.create()
    }
}

class B extends A {
    constructor(options) {
        super()
        this.options = options
    }

    create() {
        let title = this.options.title // TypeError: Cannot read properties of undefined (reading 'title')
    }
}

Answer 1

I would add a guard in B's create, and have its constructor execute it again:

class A {
    constructor() {
        this.create();
    }

    create() {
        console.log("I don't want to run this");
    }

    reload() {
        this.create();
    }
}

class B extends A {
    constructor(options) {
        super();
        this.options = options;
        this.create(); // ... but now
    }

    create() {
        if (!this.hasOwnProperty("options")) return; // not now...
        let title = this.options.title;
        console.log("title", title);
    }
}

let b = new B({ title: "my title" });
console.log("let's reload");
b.reload();