How to change the property setter of an object in another function?

Question

JavaScript

How, if necessary, to modify the setter of an object without changing its declaration, if
when using Object.defineProperty this points to the object that called this method?
When trying to use the Object.defineProperty.call(...) function , this still points to the object that called this function.
An example piece of code:

class Foo {
    public ModifySetter(obj: object, field: string): void {
        Object.defineProperty(obj, field, {
            set: (value) => {
                console.log(this); // объект класса Foo
                this[field] = value;
                // some actions
            },
            get: () => this[field]
        });
    }
}

const bar = (field) => {
       Object.defineProperty(this, field, {
            set: (value) => {
                console.log(this); // объект класса Foo
                this[field] = value;
                // some actions
            },
            get: () => this[field]
        });
}

class Foo {
    public ModifySetter(obj: object, field: string): void {
        bar.call(obj, field);
    }
}

Answer 1

Changing the context inside a class method does not work. (Features of compiling typescript to js, ​​as I understand it).
However, it is possible to change the context when a class method is called.

Answer 2

class Foo {
    constructor() {
        this._field = '';
    }

    set field(value) {
        this._field = value+='Foo';
    }

    get field() {
        return this._field;
    }
}

class MyFoo extends Foo {
    set field(value) {
        super.field = value;
        this._field += 'MyFoo';
    }
}