i have used this method but still can't manage to make it work 

odoo.define('custom_module.CustomReceiptScreen', function (require) {
    'use strict';
    const ReceiptScreen = require('point_of_sale.ReceiptScreen');
    const Registries = require('point_of_sale.Registries');
    const CustomReceiptScreen = (ReceiptScreen) => {
        class CustomReceiptScreen extends ReceiptScreen {
            async printReceipt() {
            alert("yaw rani hna")
                // Add your custom printing logic here
                console.log('Custom printReceipt logic');

                // Call the original method if needed
                const currentOrder = this.currentOrder;
                const isPrinted = await this._printReceipt();




                if (isPrinted) {
                    currentOrder._printed = true;
                }

            }));
                if (isPrinted) {
                    currentOrder._printed = true;
                }
                // Additional custom logic
                // ...
            }
        }
        CustomReceiptScreen.template = 'ReceiptScreen';
        return CustomReceiptScreen;
    };

    Registries.Component.addByExtending(CustomReceiptScreen, ReceiptScreen);

    return CustomReceiptScreen;
});

my problem is that i'ts not called even though that i have added to  "assets" :
'point_of_sale'[]

Hi,

const customScreen = (AbstractReceiptScreen) => {

        class customScreen extends AbstractReceiptScreen {

             /**

                * @Override AbstractReceiptScreen

             */

            setup() {

                super.setup();

            }

            confirm() {

                //Returns to the product screen when we click confirm

                this.showScreen('ProductScreen');

            }

            async _printWeb() {

                 // Your custom print logic here            }

        }

        customScreen.template = 'LocationSummaryReceiptScreen';

        return customScreen;

    };

    Registries.Component.addByExtending(customScreen, AbstractReceiptScreen);

    return customScreen;

Hope it helps