This project serves as a proof of concept for the use of React within Adobe Extendscript extensions. At time of writing this is React 16.9, ES2019.

Follow the basic setup steps provided here.
Install node
Run npm install gulp -g
Run npm install
Run npm start
Open Adobe application and navigate to Window > Extensions > React Example

Files may fail to copy due to permissions. If so, either create a symlink or copy the contents of the plugin folder to

C:\\Program Files (x86)\\Common Files\\Adobe\\CEP\\extensions\\YourPluginName for Windows
or /Library/Application Support/Adobe/CEP/extensions/YourPluginName for Mac

A few options exist within package.json under the extendscript field. These are copied to manifest.xml when running npm start.