This cheat sheet is an adjunct to our Definitive TypeScript Guide. Originally published November 2018. Updated October 2021 for TypeScript 4.4.

Originally published October 2018. Updated October 2021. This article describes the features and functionality of TypeScript 4.4. One of the most interesting languages for large-scale application development is Microsoft’s TypeScript. TypeScript is unique in that it is a superset of JavaScript, but with optional types, interfaces, generics, and more.

React Native is great for writing mobile applications. It lets you use web paradigms for UI construction, which are usually much simpler than the native analogues. Tools like Expo make developing apps even easier, allowing developers to mostly ignore the native side of things.

Introduction Web Vitals scores can have a huge influence on your search engine rankings and directly impact your user’s experience when visiting your website.

Deno, introduced by Node.js creator Ryan Dahl during JSConf 2018, has grown into a credible alternative to Node.js, and the JavaScript and TypeScript communities have continued to track Deno’s progress. Like Node.js, Deno is a system for executing JavaScript code in various environments ( desktop, command-line, server, etc.).

What is a Content Security Policy? A Content Security Policy (CSP) is an important aspect of securing websites and web applications. CSP is a resource security specification (W3C recommendation) for web browsers. It is configured by sending directives in an HTTP header. Enforcing the directives is the responsibility of web browsers.

Among the vast number of improvements that ES2015 brought to the JavaScript language was a powerful feature called “template literals.” Naturally, TypeScript, as a superset of JavaScript, has supported this useful construct since its beginning.

Today’s software development landscape has never been more challenging. The rich capabilities of modern hardware and the high consumer expectations for performance and stability combine to ensure that developers need as much help as possible to meet their deadlines.

TypeScript has become a hugely popular alternative to JavaScript in the frontend web development community. Many engineering teams are convinced it is a critical tool that allows them to write better code faster. From a business perspective, however, things are not so straightforward.

Getting started with Git can be a daunting task, especially if you are not at home in the command line. Fortunately, Git is a mature and widely used tool so there is a lot of reference and “How do I…?” material available.