How to Download and Install Npm Puppeteer

If you're looking to debug your test inside Chromium like a boss, then you've come to the right place! Ndb jest or ndb mocha (or npx ndb jest/npx ndb mocha) allows you to do just that. In this article, we'll show you how to download and install npm puppeteer.

First, you need to install ndb globally using npm install -g ndb. Alternatively, you can use npx! This will add a debugger to your Puppeteer (node) code, allowing you to easily debug in the test browser.

To enable debugging, you'll need to set an environment variable and run your script with node. For example:

`env DEBUG='puppeteer:*' env DEBUG_COLORS=true node script.js 2>&1 | grep -v 'Network'`

This will filter out all Network domain messages and allow you to debug in the test browser.

Once you've done this, you'll be able to debug your Puppeteer (node) code easily using ndb. The debugger will be hit and you can step through your code, set breakpoints, and inspect variables.

In addition to debugging, npm puppeteer also allows you to capture a timeline trace of your site to help diagnose performance issues. You can do this by running your tests directly in the latest version of Chrome using the latest JavaScript and browser features.

Some other things that you can do with Puppeteer include:

* Create an up-to-date, automated testing environment

* Automate form submission, UI testing, keyboard input, etc.

* Crawl a SPA (Single-Page Application) and generate pre-rendered content

* Generate screenshots and PDFs of pages

Most things that you can do manually in the browser can be done using Puppeteer! For example, you can automate tasks such as clicking buttons, filling out forms, and scrolling through pages.

Puppeteer runs headless by default, but can be configured to run full (non-headless) Chrome or Chromium. It's a Node library that provides a high-level API to control Chrome or Chromium over the DevTools Protocol.

If you're new to Puppeteer, there are plenty of resources available to help you get started. You can check out the official documentation, which includes an API reference, FAQ, and troubleshooting guide. You can also join online communities and forums to connect with other developers who are using Puppeteer.

In conclusion, npm puppeteer is a powerful tool that allows you to automate tasks in Chrome or Chromium. With its high-level API and ability to control the browser over the DevTools Protocol, it's a great choice for anyone looking to automate testing or other browser-based tasks. By following these steps, you can download and install npm puppeteer and start automating your tests today!

Npm puppeteer download