/**
 * [tips]: You may consider manually add `<br />`
 *
 * @specs https://m3.material.io/components/tooltips/specs
 */
export declare const RichTooltip: import('react').ForwardRefExoticComponent<{
    children?: React.ReactNode;
    subhead?: React.ReactNode;
    action?: React.ReactNode;
    onActionClick?: VoidFunction;
} & Omit<import('react').HTMLProps<HTMLElement>, "as" | "ref" | "action" | "children" | "onActionClick" | "subhead"> & import('react').RefAttributes<HTMLDivElement>>;