text: import Feature from '../src/ol/Feature.js';
  import Map from '../src/ol/Map.js';
  import Point from '../src/ol/geom/Point.js';
  import Select from '../src/ol/interaction/Select.js';
  import Stamen from '../src/ol/source/Stamen.js';
  import VectorSource from '../src/ol/source/Vector.js';
  import View from '../src/ol/View.js';
  import {Icon, Style} from '../src/ol/style.js';
  import {Tile as TileLayer, Vector as VectorLayer} from '../src/ol/layer.js';
  
  function createStyle(src, img) {
    return new Style({
      image: new Icon({
        anchor: [0.5, 0.96],
        crossOrigin: 'anonymous',
        src: src,
        img: img,
        imgSize: img ? [img.width, img.height] : undefined,
      }),
    });
  }
  
  const iconFeature = new Feature(new Point([0, 0]));
  iconFeature.set('style', createStyle('data/icon.png', undefined));
  
  const map = new Map({
    layers: [
      new TileLayer({
        source: new Stamen({layer: 'watercolor'}),
      }),
      new VectorLayer({
        style: function (feature) {
          return feature.get('style');
        },
        source: new VectorSource({features: [iconFeature]}),
      }),
    ],
    target: document.getElementById('map'),
    view: new View({
      center: [0, 0],
      zoom: 3,
    }),
  });
  
  const selectStyle = {};
  const select = new Select({
    style: function (feature) {
      const image = feature.get('style').getImage().getImage();
      if (!selectStyle[image.src]) {
        const canvas = document.createElement('canvas');
        const context = canvas.getContext('2d');
        canvas.width = image.width;
        canvas.height = image.height;
        context.drawImage(image, 0, 0, image.width, image.height);
        const imageData = context.getImageData(0, 0, canvas.width, canvas.height);
        const data = imageData.data;
        for (let i = 0, ii = data.length; i < ii; i = i + (i % 4 == 2 ? 2 : 1)) {
          data[i] = 255 - data[i];
        }
        context.putImageData(imageData, 0, 0);
        selectStyle[image.src] = createStyle(undefined, canvas);
      }
      return selectStyle[image.src];
    },
  });
  map.addInteraction(select);
  
  map.on('pointermove', function (evt) {
    map.getTargetElement().style.cursor = map.hasFeatureAtPixel(evt.pixel)
      ? 'pointer'
      : '';
  });
  