strapi/docs/3.x.x/en/plugin-development/plugin-architecture.md

Plugin Folders and Files Architecture

The logic of a plugin is located at his root directory ./plugins/**. The admin panel related parts of each plugin is contained in the /admin folder. The folders and files structure is the following:

/plugin
└─── admin // Contains the plugin's front-end
|     └─── build // Webpack build of the plugin
|     └─── src // Source code directory
|          └─── bootstrap.js // (Optional) Contains the logic to execute before rendering the plugin
|          └─── components // Contains the list of React components used by the plugin
|          └─── containers
|          |    └─── App // Container used by every others containers
|          |    └─── HomePage
|          |         └─── action.js // List of Redux actions used by the current container
|          |         └─── constants.js // List of actions constants
|          |         └─── index.js // React component of the current container
|          |         └─── reducer.js // Redux reducer used by the current container
|          |         └─── sagas.js // List of sagas functions
|          |         └─── selectors.js // List of selectors
|          |         └─── styles.scss // Style of the current container
|          |
|          └─── requirements.js // (Optional) Contains the logic to prevent a plugin from being rendered
|          └─── translations // Contains the translations to make the plugin internationalized
|               └─── en.json
|               └─── fr.json
└─── config // Contains the configurations of the plugin
|     └─── functions
|     |    └─── bootstrap.js // Asynchronous bootstrap function that runs before the app gets started
|     └─── policies // Folder containing the plugin's policies
|     └─── queries // Folder containing the plugin's models queries
|     └─── routes.json // Contains the plugin's API routes
└─── controllers // Contains the plugin's API controllers
└─── middlewares // Contains the plugin's middlewares
└─── models // Contains the plugin's API models
└─── services // Contains the plugin's API services