import React from 'react';
export declare function isClassComponent(component: any): boolean;
export declare function isFunctionComponent(component: any): boolean;
export declare function isReactComponent(component: any): boolean;
export declare function isElement(element: Record<string, unknown> | null | undefined): element is Record<string, unknown> & React.ReactElement<unknown, string | React.JSXElementConstructor<any>>;
export declare function isCompositeTypeElement(element: Record<string, unknown> | null | undefined): boolean;