Types of addons
Each Storybook addon is classified into two general categories, UI-based or Presets. Each type of addons features are documented here. Use this as a reference when creating your addon.
UI-based addons
UI-based addons allow you to customize Storybook's UI with the following elements.
Panels
Panel addons allow you to add your own UI in Storybook's addon panel. This is the most common type of addon in the ecosystem. For example the official @storybook/actions and @storybook/a11y use this pattern.
Use this boilerplate code to add a new Panel to Storybook's UI:
Toolbars
Toolbar addons allow you to add your own custom tools in Storybook's Toolbar. For example the official @storybook/backgrounds and the storybook-addon-outline use this pattern.
Use this boilerplate code to add a new button to Storybook's Toolbar:
The icon element used in the example loads the icons from the @storybook/components package. See here for the list of available icons that you can use.
Tabs
Tab addons allow you to create your own custom tabs in Storybook. For example, the official @storybook/addon-docs uses this pattern.
Use this boilerplate code to add a new Tab to Storybook's UI:
Preset addons
Storybook preset addons are grouped collections of babel, webpack, and addons configurations to integrate Storybook and other technologies. For example the official preset-scss and preset-create-react-app.
Use this boilerplate code while writing your own preset addon.