firebase.json

{
  "hosting": [
    {
      "target": "weather",
      "public": "dist/weather/browser",
      "frameworksBackend": {},
      "ignore": [
        "firebase.json",
        "**/.*",
        "**/node_modules/**"
      ],
      "rewrites": [
        {
          "source": "**",
          "destination": "src/index.html"
        }
      ]
    }
  ],
  "functions": [
    {
      "source": "functions",
      "codebase": "default",
      "ignore": [
        "node_modules",
        ".git",
        "firebase-debug.log",
        "firebase-debug.*.log",
        "*.local"
      ],
      "predeploy": [
        "npm --prefix \"$RESOURCE_DIR\" run build"
      ]
    }
  ],
  "emulators": {
    "functions": {
      "port": 5001
    },
    "ui": {
      "enabled": true,
      "port": 3000
    },
    "singleProjectMode": true,
    "firestore": {
      "port": 8080
    },
    "hosting": {
      "port": 5000
    }
  }
}