firebase.json

{
  "database": {
    "rules": "database.rules.json"
  },
  "hosting": [
    {
      "site": "pub-stats-collector",
      "public": "pub_stats/build/web",
      "ignore": [
        "firebase.json",
        "**/.*",
        "**/node_modules/**"
      ],
      "rewrites": [
        {
          "source": "**",
          "destination": "/index.html"
        }
      ],
      "headers": [
        {
          "source": "**/*",
          "headers": [
            {
              "key": "Cross-Origin-Embedder-Policy",
              "value": "credentialless"
            },
            {
              "key": "Cross-Origin-Opener-Policy",
              "value": "same-origin"
            }
          ]
        }
      ]
    },
    {
      "site": "pub-stats-collector-beta",
      "public": "pub_stats/build/web",
      "ignore": [
        "firebase.json",
        "**/.*",
        "**/node_modules/**"
      ],
      "rewrites": [
        {
          "source": "**",
          "destination": "/index.html"
        }
      ],
      "headers": [
        {
          "source": "**/*",
          "headers": [
            {
              "key": "Cross-Origin-Embedder-Policy",
              "value": "credentialless"
            },
            {
              "key": "Cross-Origin-Opener-Policy",
              "value": "same-origin"
            }
          ]
        }
      ]
    }
  ],
  "emulators": {
    "auth": {
      "port": 9099,
      "host": "127.0.0.1"
    },
    "database": {
      "port": 9000,
      "host": "127.0.0.1"
    },
    "ui": {
      "enabled": true
    }
  }
}