firebase.json

{
  "hosting": [
    {
      "predeploy": "yarn build",
      "target": "fire-tasks",
      "public": "dist/fire-tasks",
      "ignore": [
        "**/.*"
      ],
      "headers": [
        {
          "source": "*.[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f].+(css|js)",
          "headers": [
            {
              "key": "Cache-Control",
              "value": "public,max-age=31536000,immutable"
            }
          ]
        }
      ],
      "rewrites": [
        {
          "source": "**",
          "destination": "/index.html"
        }
      ]
    }
  ],
  "firestore": {
    "rules": "firestore.rules",
    "indexes": "firestore.indexes.json"
  },
  "functions": {
    "predeploy": "npm run build",
    "ignore": [
      "node_modules",
      "src",
      "coverage",
      "__tests__",
      "*.md",
      "*.log"
    ],
    "source": "functions",
    "runtime": "nodejs14"
  },
  "emulators": {
    "functions": {
      "port": 4104
    },
    "firestore": {
      "port": 4103
    },
    "hosting": {
      "port": 4101
    },
    "auth": {
      "port": 4102
    },
    "ui": {
      "port": 4100
    }
  }
}