license export const cssClasses = { ICON_BUTTON_ON : 'mdc-icon-button--on' , ROOT : 'mdc-icon-button' , } ; export const strings = { ARIA_LABEL : 'aria-label' , ARIA_PRESSED : 'aria-pressed' , DATA_ARIA_LABEL_OFF : 'data-aria-label-off' , DATA_ARIA_LABEL_ON : 'data-aria-label-on' , CHANGE_EVENT : 'MDCIconButtonToggle:change' , } ;