@wordpress/annotations 
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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 such language features and APIs, you should include the polyfill shipped in @wordpress/babel-preset-default in your code.
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.