import ApplePayPreviewButtonManager from './Preview/ApplePayPreviewButtonManager'; /** * Accessor that creates and returns a single PreviewButtonManager instance. */ const buttonManager = () => { if ( ! ApplePayPreviewButtonManager.instance ) { ApplePayPreviewButtonManager.instance = new ApplePayPreviewButtonManager(); } return ApplePayPreviewButtonManager.instance; }; // Initialize the preview button manager. buttonManager();