Editors

Syntax Highlighting

These days, many popular editors support ES2015+ syntax highlighting out of the box, while some require installing additional extensions. This guide should help you get the syntax highlighting to work.

If you're looking for more advanced integrations, you may want to take a look at the Setup guide.

Tip: The font used on the screenshot above is FiraCode.

Atom

Install language-babel package and follow the instructions.

Emacs

Install the js2-mode that's likely the best JavaScript mode available for Emacs. It has very accurate syntax highlighting using a recursive-descent parser, strict recognition of the Ecma-262 language standard, supports most Rhino and SpiderMonkey extensions from 1.5 and up, and on-the-fly reporting of syntax errors and strict-mode warnings.

In adition to js2-mode, you can install two more packages, js2-refactor that adds powerful refactorings, and xref-js2 that makes it easy to jump to function references or definitions.

Sublime Text 3

First, install Package Control. Then install Babel package from the Package Control menu and follow the instructions.

Vim

Install the vim-javascript plugin, which brings both improved syntax highlighting and indentation support for JavaScript to Vim.

Another option is to use yajs.vim with es.next.syntax.

Visual Studio Code

Install the vscode-language-babel extension and follow the instructions.

There seems to be one other way to get the syntax highlighting working and you can learn more about it in the Visual Studio Code docs.

WebStorm

WebStorm now ships with support for ES2015+ without requiring the installation of any additional extensions. You may, however, need to enable it.