import type * as React from 'react';
import type { WithBaseUIEvent } from './types.js';
/**
 * Merges multiple sets of React props such that their event handlers are called in sequence (the user's
 * before our internal ones), and allows the user to prevent the internal event handlers from being
 * executed by attaching a `preventBaseUIHandler` method. It also merges the `style` prop, whereby
 * the user's styles overwrite the internal ones.
 * @important **`className` and `ref` are not merged.**
 * @param externalProps the user's external props.
 * @param internalProps our own internal props.
 * @returns the merged props.
 */
export declare function mergeReactProps<T extends React.ElementType>(externalProps: WithBaseUIEvent<React.ComponentPropsWithRef<T>> | undefined, ...internalProps: React.ComponentPropsWithRef<T>[]): WithBaseUIEvent<React.ComponentPropsWithRef<T>>;