Composer Package Authoring：如何指定包是一个模块？

Question

I am writing a Drupal 8 module, and am new to composer. I was wondering how to specify a package to be a module, so it can get installed in the correct repository.

Right now my module's composer.json looks like this:

{
  "name": "company/module_name",
  "description": "Module Description",
  "type": "drupal-module",
  "keywords": ["the", "keywords"],
  "time": "2019-04-18",
  "authors": [
    {
      "name": "Me",
      "email": "[e-mail]",
      "role": "Developer"
    }
  ],
  "repositories": [
    {
      "packagist.org": false
    },
    {
      "type": "composer",
      "url": "https://git.company.com/project.git"
    }
  ],
  "autoload": {
    "psr-4": {
      "Project\\": "src"
    }
  },
  "require": {
    "php": ">=7.0.0",
    "mpdf/mpdf": "dev-master"
  },
  "minimum-stability": "stable"
}

I suspect I'm missing the composer/installers package, but any advice would be welcome.