Make code prettier

This updates ESLint and our shared eslint-config-openlayers to use Prettier.  Most formatting changes were automatically applied with this:

    npm run lint -- --fix

A few manual changes were required:

 * In `examples/offscreen-canvas.js`, the `//eslint-disable-line` comment needed to be moved to the appropriate line to disable the error about the `'worker-loader!./offscreen-canvas.worker.js'` import.
 * In `examples/webpack/exapmle-builder.js`, spaces could not be added after a couple `function`s for some reason.  While editing this, I reworked `ExampleBuilder` to be a class.
 * In `src/ol/format/WMSGetFeatureInfo.js`, the `// @ts-ignore` comment needed to be moved down one line so it applied to the `parsersNS` argument.

test/spec/ol/control/attribution.test.js

@@ -1,18 +1,17 @@
+import Attribution from '../../../../src/ol/control/Attribution.js';
 import Map from '../../../../src/ol/Map.js';
 import Tile from '../../../../src/ol/Tile.js';
-import View from '../../../../src/ol/View.js';
-import Attribution from '../../../../src/ol/control/Attribution.js';
 import TileLayer from '../../../../src/ol/layer/Tile.js';
 import TileSource from '../../../../src/ol/source/Tile.js';
+import View from '../../../../src/ol/View.js';
 import {createXYZ} from '../../../../src/ol/tilegrid.js';
 
-describe('ol.control.Attribution', function() {
-
+describe('ol.control.Attribution', function () {
   let map;
 
-  const tileLoadFunction = function() {
+  const tileLoadFunction = function () {
     const tile = new Tile([0, 0, -1], 2 /* LOADED */);
-    tile.getImage = function() {
+    tile.getImage = function () {
       const image = new Image();
       image.width = 256;
       image.height = 256;
@@ -21,98 +20,107 @@ describe('ol.control.Attribution', function() {
     return tile;
   };
 
-  beforeEach(function() {
+  beforeEach(function () {
     const target = document.createElement('div');
     target.style.width = '100px';
     target.style.height = '100px';
     document.body.appendChild(target);
     map = new Map({
       target: target,
-      controls: [new Attribution({
-        collapsed: false,
-        collapsible: false
-      })],
+      controls: [
+        new Attribution({
+          collapsed: false,
+          collapsible: false,
+        }),
+      ],
       layers: [
         new TileLayer({
           source: new TileSource({
             projection: 'EPSG:3857',
             tileGrid: createXYZ(),
-            attributions: 'foo'
-          })
+            attributions: 'foo',
+          }),
         }),
         new TileLayer({
           source: new TileSource({
             projection: 'EPSG:3857',
             tileGrid: createXYZ(),
-            attributions: 'bar'
-          })
+            attributions: 'bar',
+          }),
         }),
         new TileLayer({
           source: new TileSource({
             projection: 'EPSG:3857',
             tileGrid: createXYZ(),
-            attributions: 'foo'
-          })
-        })
+            attributions: 'foo',
+          }),
+        }),
       ],
       view: new View({
         center: [0, 0],
-        zoom: 0
-      })
+        zoom: 0,
+      }),
     });
-    map.getLayers().forEach(function(layer) {
+    map.getLayers().forEach(function (layer) {
       const source = layer.getSource();
       source.getTile = tileLoadFunction;
     });
   });
 
-  afterEach(function() {
+  afterEach(function () {
     disposeMap(map);
     map = null;
   });
 
-  it('does not add duplicate attributions', function() {
+  it('does not add duplicate attributions', function () {
     map.renderSync();
     const attribution = map.getTarget().querySelectorAll('.ol-attribution li');
     expect(attribution.length).to.be(2);
   });
 
-  it('renders attributions as non-collapsible if source is configured with attributionsCollapsible set to false', function() {
+  it('renders attributions as non-collapsible if source is configured with attributionsCollapsible set to false', function () {
     map.getControls().clear();
     map.addControl(new Attribution());
     const source = new TileSource({
       projection: 'EPSG:3857',
       tileGrid: createXYZ(),
       attributions: 'foo',
-      attributionsCollapsible: false
+      attributionsCollapsible: false,
     });
     source.getTile = tileLoadFunction;
-    map.addLayer(new TileLayer({
-      source: source
-    }));
+    map.addLayer(
+      new TileLayer({
+        source: source,
+      })
+    );
     map.renderSync();
 
-    const attribution = map.getTarget().querySelectorAll('.ol-attribution.ol-uncollapsible');
+    const attribution = map
+      .getTarget()
+      .querySelectorAll('.ol-attribution.ol-uncollapsible');
     expect(attribution.length).to.be(1);
   });
 
-  it('renders attributions as collapsible if configured with collapsible set to true', function() {
+  it('renders attributions as collapsible if configured with collapsible set to true', function () {
     map.getControls().clear();
     map.addControl(new Attribution({collapsible: true}));
     const source = new TileSource({
       projection: 'EPSG:3857',
       tileGrid: createXYZ(),
       attributions: 'foo',
-      attributionsCollapsible: false
+      attributionsCollapsible: false,
     });
     source.getTile = tileLoadFunction;
-    map.addLayer(new TileLayer({
-      source: source
-    }));
+    map.addLayer(
+      new TileLayer({
+        source: source,
+      })
+    );
     map.renderSync();
 
-    const attribution = map.getTarget().querySelectorAll('.ol-attribution.ol-uncollapsible');
+    const attribution = map
+      .getTarget()
+      .querySelectorAll('.ol-attribution.ol-uncollapsible');
     expect(attribution.length).to.be(0);
   });
-
 });