firebase.json

{
  "firestore": {
    "rules": "firestore.rules",
    "indexes": "firestore.indexes.json"
  },
  "hosting": {
    "public": "docs",
    "ignore": ["firebase.json", "**/.*", "**/node_modules/**"],
    "rewrites": [
      {
        "source": "**",
        "destination": "/index.html"
      }
    ],
    "headers": [
      {
        "source":"**",
        "headers": [
          {
            "key": "Content-Security-Policy",
            "value": "script-src 'self' 'unsafe-eval' 'unsafe-inline' apis.google.com"
          },
          {
            "key": "Referrer-Policy",
            "value": "no-referrer"
          },
          {
            "key": "X-Content-Type-Options",
            "value": "nosniff"
          },
          {
            "key": "X-Frame-Options",
            "value": "DENY"
          }
        ]
      }
    ]
  },
  "storage": {
    "rules": "storage.rules"
  },
  "emulators": {
    "functions": {
      "port": 5001
    },
    "firestore": {
      "port": 8888
    },
    "hosting": {
      "port": 5002
    },
    "pubsub": {
      "port": 8085
    },
    "ui": {
      "enabled": true,
      "port": "7778"
    },
    "auth": {
      "port": 9099
    },
    "storage": {
      "port": 9199
    }
  },
  "functions": {
    "codebase": "okr-tracker",
    "source": "functions"
  }
}