This addon let you display the story's declaration inside a panel.
First, install the addon
npm install -D storybook-addon-usage
Add this line to your addons.js
file (create this file inside your storybook config directory if needed).
import 'storybook-addon-usage/register';
Add those lines to your storybook config file
import {Usage} from 'storybook-addon-usage'
storybook.addDecorator(Usage);