Circular reference handling

Question

Given that modern Javascript engines can better detect circular references, is the code below acceptable? If not, what would be the design pattern in Javascript to mitigate this?

class Validator {
    constructor(elem) {
        this._elem = elem;
    }

    validate() {
        if (this._elem.value < 0) {
            throw new Error('Value cannot be negative');
        } else {
            console.log('Value is valid');
        }
    }
}

class Parent {
    constructor() {
        this._validator = new Validator(this);
        this._value = 0;
    }

    get value() {
        return this._value;
    }

    set value(newVal) {
        this._value = newVal;
    }

    validate() {
        this._validator.validate();
    }
}

and this has

p._validator._elem === p

Would passing in interfaces like the below code mitigate this

class Validator {
    constructor(valueGetter) {
        this._valueGetter = valueGetter;
    }

    validate() {
        if (this._valueGetter() < 0) {
            throw new Error('Value cannot be negative');
        } else {
            console.log('Value is valid');
        }
    }
}

class Parent {
    constructor() {
        this._validator = new Validator(()=> {return this.value});
        this._value = 0;
    }

    get value() {
        return this._value;
    }

    set value(newVal) {
        this._value = newVal;
    }

    validate() {
        this._validator.validate();
    }
}

However, this too seems to mask the reference wrapped because the function passed into the Validator class has the reference to the Parent class.