firebase.json

{
  "database": {
    "rules": "database.rules.json"
  },
  "hosting": {
    "public": "dist/swap-web/browser",
    "ignore": ["firebase.json", "**/.*", "**/node_modules/**"],
    "rewrites": [
      {
        "source": "**",
        "destination": "/index.html"
      }
    ],
    "headers": [
      {
        "source": "**",
        "headers": [
          {
            "key": "Access-Control-Allow-Origin",
            "value": "*"
          }
        ]
      },
      {
        "source": "**/*.@(jpg|jpeg|gif|png|svg|ico)",
        "headers": [
          {
            "key": "Cache-Control",
            "value": "max-age=2592000"
          },
          {
            "key": "Content-Encoding",
            "value": "gzip"
          }
        ]
      },
      {
        "source": "**/*.@(js|css)",
        "headers": [
          {
            "key": "Cache-Control",
            "value": "max-age=31536000"
          },
          {
            "key": "Content-Encoding",
            "value": "gzip"
          }
        ]
      },
      {
        "source": "**/*.@(woff|woff2)",
        "headers": [
          {
            "key": "Cache-Control",
            "value": "max-age=31536000"
          }
        ]
      },
      {
        "source": "**/*-sw.js",
        "headers": [
          {
            "key": "Cache-Control",
            "value": "no-cache"
          }
        ]
      }
    ],
    "frameworksBackend": {
      "region": "us-central1"
    }
  },
  "emulators": {
    "functions": {
      "port": 5001
    },
    "database": {
      "port": 9000
    },
    "ui": {
      "enabled": true
    }
  },
  "functions": {
    "source": "functions"
  }
}