firebase.json

{
  "hosting": {
    "headers": [
      { "source": "**/*.chunk.*", "headers": [{ "key": "Cache-Control", "value": "31536000" }] },
      { "source": "**/.woff2", "headers": [{ "key": "Cache-Control", "value": "31536000" }] },
      { "source": "/", "headers": [{ "key": "Cache-Control", "value": "no-cache" }] },
      { "source": "/index.html", "headers": [{ "key": "Cache-Control", "value": "no-cache" }] },
      { "source": "/service-worker.js", "headers": [{ "key": "Cache-Control", "value": "no-cache" }] }
    ],
    "public": "build",
    "ignore": ["firebase.json", "**/.*", "**/node_modules/**"],
    "rewrites": [
      {
        "source": "**",
        "destination": "/index.html"
      }
    ]
  },
  "functions": {
    "predeploy": ["npm --prefix \"$RESOURCE_DIR\" run lint", "npm --prefix \"$RESOURCE_DIR\" run build"],
    "source": "./functions"
  }
}