iwmlib/lib/pixi/assets/maps/osm/tilesConfig.json

{
    "projection": "mercator",
    "type": "deepzoom",
    "tiles": {
        "tileSize": 256,
        "format": "png",
        "overlap": 0,
        "type": "map",
        "height": 1024,
        "width": 1024,
        "path": "../../examples/osm",
        "urlTileTemplate": "{path}/{level}/{row}/{column}.{format}"
    }
}