@ionic/lab/www/host.config.json

Ionic Lab utility for developing Ionic apps, used by Ionic CLI

{
  "hosting": {
    "headers": [
      {
        "source": "/build/p-*",
        "headers": [
          {
            "key": "Cache-Control",
            "value": "max-age=365000000, immutable"
          }
        ]
      }
    ]
  }
}