import React from "react";
export declare function assignRef<T>(ref: React.Ref<T> | undefined, value: T): void;
export declare function composeMouseHandlers<T extends HTMLElement>(userHandler: ((event: React.MouseEvent<T>) => void) | undefined, libraryHandler: (event: React.MouseEvent<T>) => void): (event: React.MouseEvent<T>) => void;
export declare function composeKeyboardHandlers<T extends HTMLElement>(userHandler: ((event: React.KeyboardEvent<T>) => void) | undefined, libraryHandler: (event: React.KeyboardEvent<T>) => void): (event: React.KeyboardEvent<T>) => void;
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