/**
 * Generates a tile grid for the specified source. If the source type is "WMTS",
 * a `WMTSTileGrid` is generated. Otherwise, an `XYZ` tile grid is generated using the
 * OpenLayers `createXYZ` function. Returns `undefined` if the layer's tile grid is not defined.
 *
 * @param {import("../layers").EoxSource<any>} source - The source configuration object, containing the tile grid information.
 * @returns {import("ol/tilegrid/WMTS").default | import("ol/tilegrid/TileGrid").default | undefined} - The generated tile grid or `undefined` if not applicable.
 */
export function generateTileGrid(source: import("../layers").EoxSource<any>): import("ol/tilegrid/WMTS").default | import("ol/tilegrid/TileGrid").default | undefined;
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