firebase.json

{
  "hosting": {
    "public": "dist/",
    "ignore": [
      "firebase.json",
      "**/.*",
      "**/node_modules/**"
    ],
    "redirects": [
      {
        "source": "/upload",
        "destination": "/contribute",
        "type": 301
      }
    ],
    "rewrites": [
      {
        "source": "**",
        "destination": "/index.html"
      },
      {
        "source": "/join/:room",
        "destination": "/index.html"
      }
    ],
    "headers": [
      {
        "source": "**/*.@(eot|otf|ttf|ttc|woff|font.css)",
        "headers": [
          {
            "key": "Access-Control-Allow-Origin",
            "value": "*"
          },
          {
            "key": "Cache-Control",
            "value": "max-age=31536000, immutable"
          }
        ]
      },
      {
        "source": "/code/**|/cm/theme/**|",
        "headers": [
          {
            "key": "Cache-Control",
            "value": "max-age=604800"
          }
        ]
      },
      {
        "source": "**/@(404.html|*.@(jpg|jpeg|png|webp))",
        "headers": [
          {
            "key": "Cache-Control",
            "value": "max-age=2592000"
          }
        ]
      },
      {
        "source": "/cm/mode/**",
        "headers": [
          {
            "key": "Cache-Control",
            "value": "max-age=2592000"
          }
        ]
      },
      {
        "source": "/js/**",
        "headers": [
          {
            "key": "Cache-Control",
            "value": "max-age=31536000, immutable"
          }
        ]
      },      {
        "source": "/css/**",
        "headers": [
          {
            "key": "Cache-Control",
            "value": "max-age=31536000, immutable"
          }
        ]
      },      {
        "source": "/exampleResults.json",
        "headers": [
          {
            "key": "Cache-Control",
            "value": "max-age=31536000, immutable"
          }
        ]
      },
      {
        "source": "**/*.html",
        "headers": [
          {
            "key": "Cache-Control",
            "value": "max-age=3600, must-revalidate"
          }
        ]
      }
    ],

    "trailingSlash": false
  }
}