import React from 'react';
export declare function withProps(WrappedComponent: React.ElementType, extra: any): (props: any) => React.ReactElement<any, string | ((props: any) => React.ReactElement<any, string | any | (new (props: any) => React.Component<any, any, any>)> | null) | (new (props: any) => React.Component<any, any, any>)>;