firebase.json

{
  "emulators": {
    "hosting": {
      "public": "build",
      "port": 9000,
      "host": "0.0.0.0"
    },
    "ui": {
      "enabled": true
    }
  },
  "hosting": {
    "public": "build",
    "ignore": [
      "firebase.json",
      "**/.*",
      "**/node_modules/**"
    ],
    "headers": [
      {
        "source": "**",
        "headers": [
          {
            "key": "Cache-Control",
            "value": "s-maxage=86400, max-age=0, must-revalidate"
          }
        ]
      },
      {
        "source": "**/service-worker.js",
        "headers": [
          {
            "key": "Cache-Control",
            "value": "no-cache"
          }
        ]
      },
      {
        "source": "**/*.@(css|js)",
        "headers": [
          {
            "key": "Cache-Control",
            "value": "max-age=31536000, immutable"
          }
        ]
      },
      {
        "source": "**/*.@(jpg|jpeg|gif|png|avif|webp)",
        "headers": [
          {
            "key": "Cache-Control",
            "value": "public, max-age=2678400, immutable"
          },
          {
            "key": "CDN-Cache-Control",
            "value": "public, max-age=2678400, immutable"
          },
          {
            "key": "X-Content-Type-Options",
            "value": "nosniff"
          }
        ]
      },
      {
        "source": "**",
        "headers": [
          {
            "key": "X-Content-Type-Options",
            "value": "nosniff"
          }
        ]
      },
      {
        "source": "**",
        "headers": [
          {
            "key": "X-Download-Options",
            "value": "noopen"
          }
        ]
      },
      {
        "source": "**",
        "headers": [
          {
            "key": "X-Frame-Options",
            "value": "SAMEORIGIN"
          }
        ]
      },
      {
        "source": "**",
        "headers": [
          {
            "key": "X-Permitted-Cross-Domain-Policies",
            "value": "none"
          }
        ]
      },
      {
        "source": "**",
        "headers": [
          {
            "key": "X-Robots-Tag",
            "value": "noindex"
          }
        ]
      },
      {
        "source": "**",
        "headers": [
          {
            "key": "X-XSS-Protection",
            "value": "1; mode=block"
          }
        ]
      },
      {
        "source": "**",
        "headers": [
          {
            "key": "Accept-CH",
            "value": "DPR, Viewport-Width, Width"
          }
        ]
      },
      {
        "source": "**",
        "headers": [
          {
            "key": "Permissions-Policy",
            "value": "accelerometer=(), camera=(), fullscreen=(self), geolocation=(self), interest-cohort=(), magnetometer=(), microphone=(), payment=(), publickey-credentials-get=(), speaker=(), screen-wake-lock=(), sync-xhr=(self), usb=(), web-share=(), xr-spatial-tracking=(), browsing-topics=(), join-ad-interest-group=(), run-ad-auction=()"
          }
        ]
      },
      {
        "source": "**",
        "headers": [
          {
            "key": "Referrer-Policy",
            "value": "no-referrer-when-downgrade"
          }
        ]
      }
    ],
    "cleanUrls": true,
    "trailingSlash": true
  }
}