3.3.1. Modules Directory Structure

In this chapter, you'll learn about the expected files and directories in your module.

index.ts#

The index.ts file is in the root of your module's directory and exports the module's definition as explained in the Modules chapter.

service.ts#

A module must have a main service that contains the module's business logic. It's created in the service.ts file at the root of your module directory as explained in the Modules chapter.

Other Directories#

The following directories are optional and you can choose to create them based on your module's functionality:

• models: Holds the data models representing tables in the database.
• migrations: Holds the migration files used to reflect changes on the database.
• loaders: Holds the script files to run on the application's startup when Medusa loads the module.