Nowinstock scraper

tracker.js

const Observable = require('rxjs').Observable
const request = require('request')
const cheerio = require('cheerio')
const moment = require('moment')

Observable.interval(1000 * 15)
    .timeInterval()
    .flatMap(Void => {
        return Observable.create(observer => {
            request({
                url: "http://www.nowinstock.net/computers/videocards/nvidia/gtx1080ti/",
                method: "GET"
            }, (err, res, body) => {
                if(err)
                    observer.error(err)
                else if(!("" + res.statusCode).match(/2\d{2}/g))
                    observer.error(res)
                else
                    observer.next(res)
            })
        })
    })
    .do(Void => console.log("=============== " + moment().format("h:mm:ss a") + " ==============="))
    .flatMap(res => {
        let $ = cheerio.load(res.body)
        let rows = $("#data tr").get()
        return Observable.from(rows)
    })
    .filter(row => !!row.attribs.id && row.children[2].children[0].data == "In Stock")
    .do(row => {
        let price = row.children[3].children[0].data
        let name = row.children[1].children[0].children[0].data.slice(0, -2)
        let link = row.children[1].children[0].attribs.href
        console.log(price + " | " + name + " | " + link)
    })
    .subscribe(Void => {}, err => console.error("Error:", err.statusCode))