import Map from 'ol/Map';
import View from 'ol/View';
import {Tile as TileLayer, Image as ImageLayer} from 'ol/layer';
import {OSM, ImageArcGISRest} from 'ol/source';

const url = 'https://sampleserver1.arcgisonline.com/ArcGIS/rest/services/' +
    'Specialty/ESRI_StateCityHighway_USA/MapServer';

const layers = [
  new TileLayer({
    source: new OSM()
  }),
  new ImageLayer({
    source: new ImageArcGISRest({
      ratio: 1,
      params: {},
      url: url
    })
  })
];
const map = new Map({
  layers: layers,
  target: 'map',
  view: new View({
    center: [-10997148, 4569099],
    zoom: 4
  })
});