import {extend} from '@shopify/checkout-ui-extensions'; extend( 'Checkout::CartLineDetails::RenderAfter', (root, {target}) => { const text = root.createText( `Line item title: ${target.current.title}`, ); root.appendChild(text); target.subscribe((updatedTarget) => { text.updateText( `Line item title: ${updatedTarget.title}`, ); }); }, );