export declare type MdePopoverPositionX = 'before' | 'after';
export declare type MdePopoverPositionY = 'above' | 'below';
export declare type MdePopoverTriggerEvent = 'click' | 'hover' | 'none';
export declare type MdePopoverScrollStrategy = 'noop' | 'close' | 'block' | 'reposition';