From the magento2 root directory run the following commands:

1. composer require cloudflare/cloudflare-magento
2. composer update
3. bin/magento setup:upgrade
4. bin/magento setup:di:compile

• Up to Magento2 CE 2.2.0

You'll need to get authorization keys from the Magento marketplace and make an auth.json:

{
    "http-basic": {
        "repo.magento.com": {
            "username": "[MAGENTO USERNAME]",
            "password": "[MAGENTO PASSWORD]"
        }
    }
}

This will allow composer install to authenticate against repo.magento.com/.

1. composer test
2. composer lint
3. composer format

vendor/phpunit/phpunit/phpunit -c dev/tests/unit/phpunit.xml.dist vendor/cloudflare/cloudflare-magento/Test/Unit/