To make sure your code can be easily maintained, you must first be sure to make it clean and tidy. This is the part where WebStorm really helps you. It automatically refactors your code by performing functions on it, such as extraction of variables, moving files, inline variable extraction, etc.

WebStorm has a powerful visual git tool, allowing for easy commits, visual diffing, merging, push/pull, rebasing, and inspecting the VCS history of a project. GitHub is supported natively - you can check out a project directly from GitHub.

WebStorm offers typescript support for building typed JavaScript applications which improves refactoring and code completion, as well as helping to find bugs.

WebStorm integrates with Node.js to allow for running, debugging, and unit testing of Node.js apps.