test1/public/drupal/modules/migrate_sour.../composer.json

{
  "name": "drupal/migrate_source_csv",
  "description": "CSV source migration.",
  "type": "drupal-module",
  "license": "GPL-2.0+",
  "homepage": "https://www.drupal.org/project/migrate_source_csv",
  "authors": [
    {
      "name": "Lucas Hedding",
      "homepage":"https://www.drupal.org/u/heddn",
      "role": "Maintainer"
    }
  ],
  "support": {
    "issues": "https://www.drupal.org/project/issues/migrate_source_csv",
    "irc": "irc://irc.freenode.org/drupal-migrate",
    "source": "https://cgit.drupalcode.org/migrate_source_csv"
  },
  "minimum-stability": "dev",
  "prefer-stable": true,
  "require": {
    "drupal/core": "~8.1"
  },
  "require-dev": {
    "mikey179/vfsStream": "~1",
    "phpunit/phpunit": "~4"
  },
  "config": {
    "preferred-install": "dist"
  }
}