{
  "version": 8,
  "sources": {
    "vector": {
      "type": "vector",
      "url": "https://demotiles.maplibre.org/tiles/tiles.json"
    }
  },
  "layers": [
    {
      "id": "minimum",
      "type": "symbol",
      "source": "vector",
      "source-layer": "layer",
      "layout": {
        "text-font": ["Helvetica"],
        "text-field": "{foo}"
      }
    }
  ]
}