Can we create single composer file for more then 1 module

Question

I am creating one module which will contain more then 1 module in it. Is it possible to create single composer file for more then 1 module?

Please let me know is it possible or not. If yes, then it will be more helpful if you can tell me how.

Answer 1

Yes, with the following directory structure:

- composer.json
- registration.php
- module1/
- module2/

composer.json contains the reference to registration.php as usual.

In registration.php you define the source directories for both modules:

<?php
namespace {
    \Magento\Framework\Component\ComponentRegistrar::register(
        \Magento\Framework\Component\ComponentRegistrar::MODULE,
        'Company_Module1',
        __DIR__ . '/module1'
    );
    \Magento\Framework\Component\ComponentRegistrar::register(
        \Magento\Framework\Component\ComponentRegistrar::MODULE,
        'Company_Module2',
        __DIR__ . '/module2'
    );
}

The directories module1 and module2 contain the rest of the source files for each module.