Over time, quick fixes add up. And when it's time to build something new, what would normally take a few hours now takes weeks or months. That's tech debt.

Mislav Javor explains how to test smart contracts, using both Truffle and JavaScript.

Building chat in your app can be pretty complex. Yet, with Chatkit, implementing fully-featured chat is nothing but a few lines of code.

In this tutorial we will use ES Modules in Node 10 by using the --experimental-modules flag and .mjs extensions. 💖 Become a Patron: Show support & get perks!...

Tonino Jankov covers the background, performance benefits and current implementations of the HTTP/2 protocol.

Some ideas to create awareness around performance optimization in a team and company.

This book outlines essential Javascript tools and skills that every modern JavaScript developer should know, including Babel, Webpack 4, Gulp.js, Axios and more.

JavaScript is a must-have skill for all web developers. The second edition of JavaScript: Novice to Ninja is a fun, practical, and comprehensive guide to the modern usage of this deceptively powerful language.

Blazing fast CSS for your design systems and app components.

Get started with a Terraform. Download a free chapter from O'Reilly's Terraform: Up & Running.

The first 4 prep chapters

There’s a common misconception that you have to be a mathematician to do machine learning, that machine learning is hard. As it turns out, like many frameworks we have for understanding our world, the fundamentals of machine learning are straightforward.

Modern web browsers allow us to access connected media devices like microphones, cameras, and screens through MediaDevices interface. Since Electron uses chromium and Nodejs, [crayon-5bc5aefbc39f93…

Last year, WordPress was responsible for 83% of infected content management sites. Make sure you're not contributing to those infections and learn how to securely manage WordPress.

Claudio Ribeiro shows how you can use explain and indexes to spot and remedy possible performance issues with your database before they strike.

CSS styles isolation is the most frequent start point of the BEM usage. But this is the least that BEM can give you. BEM brings a system approach in your project and keeps it from the mess.