@wordpress/annotations 
Edit
Annotate content in the Gutenberg editor.
Installation Installation
Install the module
npm install @wordpress/annotations --save
This package assumes that your code will run in an ES2015+ environment. If you’re using an environment that has limited or no support for ES2015+ such as lower versions of IE then using core-js or @babel/polyfill will add support for these methods. Learn more about it in Babel docs.
Getting Started Getting Started
You need to include wp-annotations as a dependency of the JavaScript file in which you wish to use the Annotations API.
Usage Usage
See this page for more detailed usage instructions.