firebase.json

{
  "flutter": {
    "platforms": {
      "android": {
        "default": {
          "projectId": "authentication-f5ac3",
          "appId": "1:722967042979:android:0760066999ab177bfa1816",
          "fileOutput": "android/app/google-services.json"
        }
      },
      "dart": {
        "lib/firebase_options.dart": {
          "projectId": "authentication-f5ac3",
          "configurations": {
            "android": "1:722967042979:android:0760066999ab177bfa1816",
            "ios": "1:722967042979:ios:5f8f3dc6b76c2c64fa1816",
            "macos": "1:722967042979:ios:5f8f3dc6b76c2c64fa1816",
            "web": "1:722967042979:web:01e72513ab83573cfa1816",
            "windows": "1:722967042979:web:3d5c9e1086990487fa1816"
          }
        }
      }
    }
  },
  "emulators": {
    "auth": {
      "port": 9099
    },
    "firestore": {
      "port": 8080,
      "host": "0.0.0.0"
    },
    "storage": {
      "port": 9199,
      "host": "0.0.0.0"
    },
    "ui": {
      "enabled": true
    },
    "singleProjectMode": true
  },
  "firestore": {
    "rules": "firestore.rules",
    "indexes": "firestore.indexes.json"
  },
  "storage": {
    "rules": "storage.rules"
  }
}