export declare type DropdownTrigger = "click" | "hover" | "focus" | "contextMenu";
export declare type DropdownPlacementLegacy = "top-left" | "top-right" | "bottom-left" | "bottom-right" | "right-top" | "right-bottom" | "left-top" | "left-bottom";
export declare type DropdownPlacement = "top" | "top-start" | "top-end" | "bottom" | "bottom-start" | "bottom-end" | "right" | "right-start" | "right-end" | "left" | "left-start" | "left-end" | DropdownPlacementLegacy;
export interface ElementScrollRect {
    top: number;
    bottom: number;
    left: number;
    right: number;
    scrollTop: number;
    scrollBottom: number;
    scrollLeft: number;
    scrollRight: number;
    width: number;
    height: number;
}
export interface DropdownContext {
    onMouseenter: Function;
    onMouseleave: Function;
    addChildRef: Function;
    removeChildRef: Function;
    hide: Function;
}
export declare const dropdownInjectionKey: unique symbol;