let ariaAttributeKeys = null ; export function getAriaAttributeKeys ( ) { return ( ariaAttributeKeys ?? ( ariaAttributeKeys = new Set < string > ( [ 'aria-activedescendant' , 'aria-atomic' , 'aria-autocomplete' , 'aria-busy' , 'aria-checked' , 'aria-colcount' , 'aria-colindex' , 'aria-colspan' , 'aria-controls' , 'aria-current' , 'aria-describedby' , 'aria-details' , 'aria-disabled' , 'aria-dragged' , 'aria-dropeffect' , 'aria-errormessage' , 'aria-expanded' , 'aria-flowto' , 'aria-haspopup' , 'aria-hidden' , 'aria-invalid' , 'aria-label' , 'aria-labelledby' , 'aria-level' , 'aria-live' , 'aria-modal' , 'aria-multiline' , 'aria-multiselectable' , 'aria-orientation' , 'aria-owns' , 'aria-placeholder' , 'aria-posinset' , 'aria-pressed' , 'aria-readonly' , 'aria-relevant' , 'aria-required' , 'aria-rowcount' , 'aria-rowindex' , 'aria-rowspan' , 'aria-selected' , 'aria-setsize' , 'aria-sort' , 'aria-valuemax' , 'aria-valuemin' , 'aria-valuenow' , 'aria-valuetext' , ] ) ) ) ; }