firebase.json

{
  "hosting": {
    "public": "dist/browser",
    "rewrites": [
      {
        "source": "**",
        "destination": "/index.html"
      }
    ],
    "headers": [
      {
        "source": "**/*",
        "headers": [
          // {
          //   "key": "Content-Security-Policy",
          //   "value": "script-src 'self' 'nonce-2726c7f26c' cdn.segment.com www.googletagmanager.com cdnjs.cloudflare.com www.google-analytics.com cdn.ravenjs.com d24n15hnbwhuhn.cloudfront.net connect.facebook.net cdn.mxpnl.com"
          // },
          {
            "key": "X-Frame-Options",
            "value": "SAMEORIGIN"
          },
          {
            "key": "X-XSS-Protection",
            "value": "1; mode=block"
          }
        ]
      },
      {
        "source": "**/*.@(jpg|jpeg|gif|png|svg)",
        "headers": [
          {
            "key": "Cache-Control",
            "value": "max-age=2592000"
          }
        ]
      },
      {
        "source": "**/*.@(js|css)",
        "headers": [
          {
            "key": "Cache-Control",
            "value": "max-age=691200"
          }
        ]
      },
      {
        "source": "404.html",
        "headers": [
          {
            "key": "Cache-Control",
            "value": "max-age=300"
          }
        ]
      }
    ]
  },
  "database": {
    "rules": "database.rules.json"
  }
}