Problems Crawling/Scraping an Entire Website in Node.js

The following code is scraping "title" and "url" of every article on theguardian frontpage, but I want it this to crawl the entire site for every article "title" and "url"

And I cannot wrap my head around how to do so, the following code is what does the scraping but not the crawling.

const PORT = 8000
const axios = require('axios')
const cheerio = require('cheerio')
const express = require('express')
const app = express()
const cors = require('cors')
app.use(cors())

const url = 'https://www.theguardian.com/uk'

app.get('/', function (req, res) {
    res.json('This is my webscraper')
})

app.get('/results', (req, res) => {
    axios(url)
        .then(response => {
            const html = response.data
            const $ = cheerio.load(html)
            const articles = []

            $('.fc-item__title', html).each(function () { //<-- cannot be a function expression
                const title = $(this).text()
                const url = $(this).find('a').attr('href')
                articles.push({
                    title,
                    url
                })
            })
            res.json(articles)
        }).catch(err => console.log(err))

})


app.listen(PORT, () => console.log(`server running on PORT ${PORT}`))

I am not very familiar with node in general and only just began learning the basics of scraping for specific html tags and text. Thanks in advance.