Puppeteer: How to open tabs in an already active browser window?

Question

I've been writing a simple program that opens several pages and performs some simple scraping, and login functions. I have already managed to open new pages on new tabs once I run the browser, but when the browser is already open I am unable to open more tabs in that same browser, and have to open them in a new different browser window.

Is there any workaround this? Or is there any way to get puppeteer to open new pages in the same browser window if a browser window is already open? Thanks in advance.

My code is structured like this:

index.js (main application file)

async function runBrowser(pageID) {
    const browser = await puppeteer.launch({
        "headless": false,
        "defaultViewport": null,
        "args": ['--start-maximized'],
    });
//CHANGE THE PAGE THAT OPENS
    switch(pageID){
        case 0:
        login.openCursosPuntoD(browser);
        break;
        case 1:
        facebook.openFacebookPuntoD(browser);
        break;
        case 2:
        instagram.openInstagramPuntoD(browser);
        break;
        case 3:
        twitter.openTwitterPuntoD(browser);
        break;
        case 4:
        youTube.openYouTubePuntoD(browser);
        break;
        case 5:
        webPage.openPaginaWebPuntoD(browser);
        break;
        default:
        break;
    }
};
runBrowser(0);

instagramPuntoD.js (an example of an open function file)

function openInstagramPuntoD(browser){
actions.runPage('https://www.instagram.com/xxxx/',false,browser);
};
module.exports = {
  openInstagramPuntoD,
};

actions.js (contains functions of actions that the scraper can perform)

async function runPage(url,doLogin,browser){
    const page = [];
    const pageNumber = (await browser.pages()).length+1;
    page[pageNumber] = await browser.newPage();
    await page[pageNumber].goto(url);
      
if(doLogin == true){
    var user = getUsername();
    var pass = getPassword();
    login(user,pass,page[pageNumber]);
}
else{}
}

*NOTE The irrelevant parts of the code were excluded.

Answer 1

Ok so after a few research,

You have to use a userDataDir to reuse the cache, and make browser reuse the current active window. Otherwise it's just start from a traditional 'open a new window'

puppeteer.launch({
  userDataDir: 'PATH TO DATA FOLDER',
})

You can find the Data Folder with chrome://version (Profile Path), but don't forget to erase the /Default as the end of the path