Most cloud development environments will come integrated with source code editors. But for your local workspace, you can pick any based on your preference as a programmer, then customize it for MERN development. For example, the following popular options can each be customized as required:
- Atom (https://atom.io/): A free, open-source text editor for GitHub that has many MERN stack relevant packages available from other developers
- SublimeText (https://www.sublimetext.com/): A proprietary, cross-platform text editor that also has many MERN stack relevant packages available, along with support for JavaScript development
- Visual Studio Code (https://code.visualstudio.com/): A feature-rich source code editor by Microsoft with ...