---
title: "Matteo Mazzarolo (@mmazzarolo) | Hashnode"
description: "Engineer @invisionapp. Read the latest articles by Matteo Mazzarolo on Hashnode."
url: "https://hashnode.com/@mmazzarolo"
---

@mmazzarolo

# Matteo Mazzarolo

@mmazzarolo · Joined February 2016

Engineer @invisionapp

[Website](https://mmazzarolo.com/)

### [Track down the JavaScript code responsible for polluting the global scope](https://mmazzarolo.hashnode.dev/track-down-the-javascript-code-responsible-for-polluting-the-global-scope?utm_source=hashnode&utm_medium=feed)

Here's how you can debug what JavaScript code is adding global variables to the window object

7 min read · [mmazzarolo.hashnode.dev](https://mmazzarolo.hashnode.dev/track-down-the-javascript-code-responsible-for-polluting-the-global-scope?utm_source=hashnode&utm_medium=feed)

[Feb 23, 2022](https://hashnode.com/posts/track-down-the-javascript-code-responsible-for-polluting-the-global-scope/621632e0a03ae28fe10fd25f)

### [Find what JavaScript variables are leaking into the global scope](https://mmazzarolo.hashnode.dev/find-what-javascript-variables-are-leaking-into-the-global-scope?utm_source=hashnode&utm_medium=feed)

Let's build an utility to check what variables have been added or leaked to the global window object at runtime by JavaScript code

4 min read · [mmazzarolo.hashnode.dev](https://mmazzarolo.hashnode.dev/find-what-javascript-variables-are-leaking-into-the-global-scope?utm_source=hashnode&utm_medium=feed)

[Feb 22, 2022](https://hashnode.com/posts/find-what-javascript-variables-are-leaking-into-the-global-scope/6214fdbe3725328660e2f3a9)

### [Creating and deploying a tiny proxy server on Vercel in 10 minutes](https://mmazzarolo.hashnode.dev/creating-and-deploying-a-tiny-proxy-server-on-vercel-in-10-minutes?utm_source=hashnode&utm_medium=feed)

Here's how you can create and deploy a tiny Node.js proxy server on Vercel in 10 minute

3 min read · [mmazzarolo.hashnode.dev](https://mmazzarolo.hashnode.dev/creating-and-deploying-a-tiny-proxy-server-on-vercel-in-10-minutes?utm_source=hashnode&utm_medium=feed)

[Feb 22, 2022](https://hashnode.com/posts/creating-and-deploying-a-tiny-proxy-server-on-vercel-in-10-minutes/6214c05ab8d3826eb5665e4d)

### [Running React Native everywhere: Browser Extensions & Electron](https://mmazzarolo.hashnode.dev/running-react-native-everywhere-browser-extensions-and-electron?utm_source=hashnode&utm_medium=feed)

Building a modular React Native app using a Yarn Workspaces monorepo: Browser Extensions & Electron

10 min read · [mmazzarolo.hashnode.dev](https://mmazzarolo.hashnode.dev/running-react-native-everywhere-browser-extensions-and-electron?utm_source=hashnode&utm_medium=feed)

[Sep 28, 2021](https://hashnode.com/posts/running-react-native-everywhere-browser-extensions-and-electron/615323179c8bfd08f5ba73e7)

### [Running React Native everywhere: The Web](https://mmazzarolo.hashnode.dev/running-react-native-everywhere-the-web?utm_source=hashnode&utm_medium=feed)

Building a modular React Native app using a Yarn Workspaces monorepo: The Web

6 min read · [mmazzarolo.hashnode.dev](https://mmazzarolo.hashnode.dev/running-react-native-everywhere-the-web?utm_source=hashnode&utm_medium=feed)

[Sep 26, 2021](https://hashnode.com/posts/running-react-native-everywhere-the-web/6150755094bb297e1aad8361)