extend js

Here is the original js code that is in the sale_variant_mixin.js file of the website_sale module

_onChangeCombination: function (ev, $parent, combination) {
        var self = this;
        var $price = $parent.find(".oe_price:first .oe_currency_value");
        var $default_price = $parent.find(".oe_default_price:first .oe_currency_value");
        var $optional_price = $parent.find(".oe_optional:first .oe_currency_value");
        $price.text(self._priceToStr(combination.price));
        $default_price.text(self._priceToStr(combination.list_price));
        $default_price.text(self._priceToStr(combination.standard_price));

        var isCombinationPossible = true;
        if (typeof combination.is_combination_possible !== "undefined") {
            isCombinationPossible = combination.is_combination_possible;
        }
        this._toggleDisable($parent, isCombinationPossible);

        if (combination.has_discounted_price && !combination.compare_list_price) {
            $default_price
                .closest('.oe_website_sale')
                .addClass("discount");
            $optional_price
                .closest('.oe_optional')
                .removeClass('d-none')
                .css('text-decoration', 'line-through');
            $default_price.parent().removeClass('d-none');
        } else {
            $default_price
                .closest('.oe_website_sale')
                .removeClass("discount");
            $optional_price.closest('.oe_optional').addClass('d-none');
            $default_price.parent().addClass('d-none');
        }

        var rootComponentSelectors = [
            'tr.js_product',
            '.oe_website_sale',
            '.o_product_configurator'
        ];
I need to modify the code where the prices are updated:

$price.text(self._priceToStr(combination.price));
$default_price.text(self._priceToStr(combination.list_price));

I want to add something like this:

$standard_price.text(self._priceToStr(combination.standard_price));

I want to make this change within my custom module, but I'm not sure how to properly extend this function in Odoo 17.

I read about extends and patch but i do not know what to use.

Could someone guide me on how to achieve this?