S
A source data has been loaded.Event may be emitted synchronously in cases when source's metadata is available when source is added to the style.The `id` property defines the source id.The `type` property defines if source's metadata (e.g., TileJSON) or tile has been loaded. The property of `metadata`value might be useful to identify when particular source's metadata is loaded, thus all source's properties arereadable and can be updated before `map` will start requesting data to be rendered.The `loaded` property will be set to `true` if all source's data required for visible viewport of the `map`, are loaded.The `tile-id` property defines the tile id if the `type` field equals `tile`.``` textEvent data format (Object):.├── id - String├── type - String ("metadata" | "tile")├── loaded - optional Boolean└── tile-id - optional Object├── z Number (zoom level)├── x Number (x coorinate)└── y Number (y coorinate)```