book_admin/vendor/endroid/installer/composer.json

{
    "name": "endroid/installer",
    "type": "composer-plugin",
    "license": "MIT",
    "authors": [
        {
            "name": "Jeroen van den Enden",
            "email": "info@endroid.nl"
        }
    ],
    "require": {
        "php": ">=7.1",
        "composer-plugin-api": "^1.1"
    },
    "require-dev": {
        "phpunit/phpunit": "^5.7|^6.0"
    },
    "autoload": {
        "psr-4": {
            "Endroid\\Installer\\": "src"
        }
    },
    "extra": {
        "branch-alias": {
            "dev-master": "1.x-dev"
        },
        "class": "Endroid\\Installer\\Installer"
    }
}