Property 'showURLQueryString' does not exist on type 'typeof import("querystring-reader")'.  TS2339

/// <reference types="node" />

declare module 'querystring-reader' {
    export interface Main {
        showURLQueryString(): object
    }
}

import React, { useEffect} from 'react';
import querystringreader from 'querystring-reader';

interface IContactProps {
}

const Contact: React.FunctionComponent<IContactProps> = (props) => {
    useEffect(() => {
        console.log('qs', querystringreader.showURLQueryString());

        return () => {
            console.log('page CONTACT - unload ')

        }
    },[])

    return (
        <MainTmpl>
            contactPage

            <ContactForm />
    </MainTmpl>);
};

export default Contact;