Puppeteer, a popular headless browser library, can use Massive proxies to bypass anti-bot restrictions.

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Step 1: Install Puppeteer

Ensure Puppeteer is installed. Run: 
npm install puppeteer

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Step 2: Configure Proxy

Use Puppeteer’s --proxy-server flag for proxy setup, and authenticate with your Massive credentials.

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Step 3: Code Example

import puppeteer from "puppeteer";

(async () => {
    const browser = await puppeteer.launch({
        args: [`--proxy-server=network.joinmassive.com:65534`],
    });
    const page = await browser.newPage();
    await page.authenticate({ username: '<YOUR_USERNAME>', password: '<YOUR_PASSWORD>' });
    await page.goto("https://httpbin.io/ip");
    const body = await page.waitForSelector("body");
    const response = await body.getProperty("textContent");
    const jsonResponse = await response.jsonValue();
    console.log(jsonResponse);
    await browser.close();
})();

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Troubleshooting:

If you encounter SSL certificate errors (e.g., net::ERR_CERT_AUTHORITY_INVALID), add the following: 
const browser = await puppeteer.launch({
    args: [`--proxy-server=network.joinmassive.com:65534`],
    ignoreHTTPSErrors: true
});
Use HTTP and port 65534 when using Puppeteer with the proxies.