{
  "version": 8,
  "sources": {
    "osmSource": {
      "type": "raster",
      "tiles": ["https://tile.openstreetmap.org/{z}/{x}/{y}.png"],
      "tileSize": 256
    }
  },
  "layers": [
    {
      "id": "osmLayer",
      "type": "raster",
      "source": "osmSource"
    }
  ]
}