RasterTileSource

Example:

const source = new RasterTileSource(map, {
     url: (x, y, zoom) => `https://tile.openstreetmap.org/${zoom}/${x}/${y}.png`,
     attributes: { foo: 'asd' },
     attribution: '&copy; <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors',
});