/**
 * Generates a shaded relief image given elevation data.  Uses a 3x3
 * neighborhood for determining slope and aspect.
 * Supports multiple hillshade algorithms matching MapLibre's
 * {@link https://github.com/maplibre/maplibre-gl-js/blob/main/src/shaders/hillshade.fragment.glsl hillshade.fragment.glsl}:
 * standard, basic, combined, igor, and multidirectional.
 * @param {Array<ImageData>} inputs Array of input images.
 * @param {Object} data Data added in the "beforeoperations" event.
 * @return {ImageData} Output image.
 */
export function hillshade(inputs: Array<ImageData>, data: any): ImageData;
export function raster(inputs: any, data: any): ImageData;