firebase.json

{
  "firestore": {
    "rules": "firestore.rules",
    "indexes": "firestore.indexes.json"
  },
  "hosting": {
    "public": "dist",
    "ignore": ["firebase.json", "**/.*", "**/node_modules/**"],
    "rewrites": [
      {
        "source": "/api{,/**}",
        "function": "api"
      },
      {
        "source": "/robots.txt",
        "destination": "/robots.txt"
      },
      {
        "source": "/manifest.json",
        "destination": "/manifest.json"
      },
      {
        "source": "/logo512.png",
        "destination": "/logo512.png"
      },
      {
        "source": "/logo192.png",
        "destination": "/logo192.png"
      },
      {
        "source": "/favicon.png",
        "destination": "/favicon.png"
      },
      {
        "source": "**",
        "destination": "/index.html"
      }
    ]
  },
  "storage": {
    "rules": "storage.rules"
  },
  "functions": {
    "ignore": [
      "node_modules",
      ".git",
      "firebase-debug.log",
      "firebase-debug.*.log"
    ],
    "predeploy": [
      "npm --prefix \"$RESOURCE_DIR\" run lint",
      "npm --prefix \"$RESOURCE_DIR\" run build"
    ],
    "source": "functions"
  },
  "emulators": {
    "auth": {
      "port": 9099
    },
    "functions": {
      "port": 5001
    },
    "firestore": {
      "port": 8081
    },
    "hosting": {
      "port": 5000
    },
    "ui": {
      "enabled": true
    },
    "storage": {
      "port": 9199
    },
    "singleProjectMode": true
  }
}