Scrubber

import  { Selector } from 'testcafe';
var     fs = require('fs'),
        http = require('http'),
        https = require('https'),
        Stream = require('stream').Transform;

let     baseUrl = 'https://mangallama.com/manga.php?manga=Isekai-Tensei-Soudouki';

var download = (url, filename, callback) => {
    var client = http;
    if (url.toString().indexOf("https") === 0){
      client = https;
     }
    var request = client.get(url, function(res){
        console.log(`Preparing... ${filename}`);
        var imagedata = ''
        res.setEncoding('binary')

        res.on('data', function(chunk){
            imagedata += chunk
        })

        res.on('end', function(){
            fs.writeFile(filename, imagedata, 'binary', function(err){
                if (err) throw err
                console.log(`${filename} Saved`)
                callback()
            })
        })

    })
};

fixture('Manga download').page(baseUrl);
test('Parse data', async t => {
        await t.maximizeWindow();

        let iElements = await(Selector('.table-striped tbody tr').count);


        let i = 1;
        let chunk = '';
        let prev = Selector('#chapscontainer > table > tbody > tr:nth-child(1) > td:nth-child(1) > a');
        let prevLink = await prev.getAttribute('href');
        const BATCH_SIZE = 1000;
            console.log(`Accessing Chapter's Page`);

        do {
            await t.click(prev);
            let chapters = await(Selector('.imgholder').count);
            let j = 1;
            console.log(`Fetching Chapter's parts //`);
            console.log(`Downloading... Chapter ${i}`);
            do {
                let chap = Selector(".imgholder").nth(j);
                let src = await chap.getAttribute('src')
                let I = iElements - i ;
                let dir = `./Chapter-${I}`;
                if (!fs.existsSync(dir)){
                    fs.mkdirSync(dir);
                }
                await download(src, `${dir}/${j}.jpg`, function() {
                    console.log(`Chapter ${I} - ${j} Downloaded!`);
                });
                j++;
            } while (j < chapters);



            prev = Selector('#wrapper > div > div.col-md-12.hotlist > div:nth-child(3) > div > h3:nth-child(2) > a');
            prevLink = await prev.getAttribute('href');
            await t.wait(10000);
            await t.click(prev);
            i++;
        } while (i < iElements);
    }
)