symfony-flex-recipes/symfony/firebase-notifier/5.1/manifest.json

{
    "add-lines": [
        {
            "file": "config/packages/notifier.yaml",
            "position": "after_target",
            "warn_if_missing": true,
            "target": "        chatter_transports:",
            "content": "            firebase: '%env(FIREBASE_DSN)%'"
        }
    ],
    "env": {
        "#1": "FIREBASE_DSN=firebase://TOKEN@default"
    }
}