feat(google-maps): deprecate marker cluster component

Deprecates the existing `MapMarkerClusterer`, because it's based on a deprecated library that doesn't support advanced markers.
A new clusterer component will be introduced that supports both regular markers and advanced ones, and is based on the current marker library.

BREAKING CHANGE:
* The new @googlemaps/markerclusterer API should be imported instead of the old one. Read more at: https://github.com/googlemaps/js-markerclusterer
* The `MapMarkerClusterer` class has been renamed to `DeprecatedMapMarkerClusterer`.
* The `map-marker-clusterer` selector has been changed to `deprecated-map-marker-clusterer`.

Author: crisbeto

src/dev-app/google-map/google-map-demo.html

@@ -10,7 +10,7 @@
                 (mapRightclick)="handleRightclick()"
                 [mapTypeId]="mapTypeId"
                 [mapId]="mapId">
-      <map-marker-clusterer [imagePath]="markerClustererImagePath">
+      <deprecated-map-marker-clusterer [imagePath]="markerClustererImagePath">
         <map-marker #firstMarker="mapMarker"
                     [position]="center"
                     (mapClick)="infoWindow.open(firstMarker)"></map-marker>
@@ -20,7 +20,7 @@
             [options]="markerOptions"
             (mapClick)="infoWindow.open(marker)"></map-marker>
         }
-      </map-marker-clusterer>
+      </deprecated-map-marker-clusterer>
       @if (hasAdvancedMarker) {
         <map-advanced-marker
           #secondMarker="mapAdvancedMarker"

src/dev-app/google-map/google-map-demo.ts

@@ -26,7 +26,7 @@ import {
   MapInfoWindow,
   MapKmlLayer,
   MapMarker,
-  MapMarkerClusterer,
+  DeprecatedMapMarkerClusterer,
   MapPolygon,
   MapPolyline,
   MapRectangle,
@@ -76,7 +76,7 @@ let apiLoadingPromise: Promise<unknown> | null = null;
     MapInfoWindow,
     MapKmlLayer,
     MapMarker,
-    MapMarkerClusterer,
+    DeprecatedMapMarkerClusterer,
     MapAdvancedMarker,
     MapPolygon,
     MapPolyline,

src/google-maps/map-marker-clusterer/README.md renamed to src/google-maps/deprecated-map-marker-clusterer/README.md

@@ -1,6 +1,9 @@
-#MapMarkerClusterer
+# Deprecation warning ⚠️
+This component is based on the deprecated `@googlemaps/markerclustererplus` library. Use the `map-marker-clusterer` component instead.
 
-The `MapMarkerClusterer` component wraps the [`MarkerClusterer` class](https://googlemaps.github.io/js-markerclustererplus/classes/markerclusterer.html) from the [Google Maps JavaScript MarkerClustererPlus Library](https://github.com/googlemaps/js-markerclustererplus). The `MapMarkerClusterer` component displays a cluster of markers that are children of the `<map-marker-clusterer>` tag. Unlike the other Google Maps components, MapMarkerClusterer does not have an `options` input, so any input (listed in the [documentation](https://googlemaps.github.io/js-markerclustererplus/index.html) for the `MarkerClusterer` class) should be set directly.
+## DeprecatedMapMarkerClusterer
+
+The `DeprecatedMapMarkerClusterer` component wraps the [`MarkerClusterer` class](https://googlemaps.github.io/js-markerclustererplus/classes/markerclusterer.html) from the [Google Maps JavaScript MarkerClustererPlus Library](https://github.com/googlemaps/js-markerclustererplus). The `DeprecatedMapMarkerClusterer` component displays a cluster of markers that are children of the `<deprecated-map-marker-clusterer>` tag. Unlike the other Google Maps components, MapMarkerClusterer does not have an `options` input, so any input (listed in the [documentation](https://googlemaps.github.io/js-markerclustererplus/index.html) for the `MarkerClusterer` class) should be set directly.
 
 ## Loading the Library
 
@@ -17,12 +20,12 @@ Additional information can be found by looking at [Marker Clustering](https://de
 ```typescript
 // google-map-demo.component.ts
 import {Component} from '@angular/core';
-import {GoogleMap, MapMarker, MapMarkerClusterer} from '@angular/google-maps';
+import {GoogleMap, MapMarker, DeprecatedMapMarkerClusterer} from '@angular/google-maps';
 
 @Component({
   selector: 'google-map-demo',
   templateUrl: 'google-map-demo.html',
-  imports: [GoogleMap, MapMarker, MapMarkerClusterer],
+  imports: [GoogleMap, MapMarker, DeprecatedMapMarkerClusterer],
 })
 export class GoogleMapDemo {
   center: google.maps.LatLngLiteral = {lat: 24, lng: 12};
@@ -45,10 +48,10 @@ export class GoogleMapDemo {
   [center]="center"
   [zoom]="zoom"
   (mapClick)="addMarker($event)">
-    <map-marker-clusterer [imagePath]="markerClustererImagePath">
+    <deprecated-map-marker-clusterer [imagePath]="markerClustererImagePath">
       @for (position of markerPositions; track position) {
         <map-marker [position]="position" />
       }
-    </map-marker-clusterer>
+    </deprecated-map-marker-clusterer>
 </google-map>
 ```

src/google-maps/map-marker-clusterer/map-marker-clusterer.spec.ts renamed to src/google-maps/deprecated-map-marker-clusterer/deprecated-map-marker-clusterer.spec.ts

@@ -6,21 +6,21 @@ import {MapMarker} from '../map-marker/map-marker';
 import {
   createMapConstructorSpy,
   createMapSpy,
-  createMarkerClustererConstructorSpy,
-  createMarkerClustererSpy,
+  createDeprecatedMarkerClustererConstructorSpy,
+  createDeprecatedMarkerClustererSpy,
   createMarkerConstructorSpy,
   createMarkerSpy,
 } from '../testing/fake-google-map-utils';
-import {MapMarkerClusterer} from './map-marker-clusterer';
+import {DeprecatedMapMarkerClusterer} from './deprecated-map-marker-clusterer';
 import {
   AriaLabelFn,
   Calculator,
   ClusterIconStyle,
   MarkerClusterer,
   MarkerClustererOptions,
-} from './marker-clusterer-types';
+} from './deprecated-marker-clusterer-types';
 
-describe('MapMarkerClusterer', () => {
+describe('DeprecatedMapMarkerClusterer', () => {
   let mapSpy: jasmine.SpyObj<google.maps.Map>;
   let markerClustererSpy: jasmine.SpyObj<MarkerClusterer>;
   let markerClustererConstructorSpy: jasmine.Spy;
@@ -39,8 +39,9 @@ describe('MapMarkerClusterer', () => {
       return createMarkerSpy({});
     });
 
-    markerClustererSpy = createMarkerClustererSpy();
-    markerClustererConstructorSpy = createMarkerClustererConstructorSpy(markerClustererSpy);
+    markerClustererSpy = createDeprecatedMarkerClustererSpy();
+    markerClustererConstructorSpy =
+      createDeprecatedMarkerClustererConstructorSpy(markerClustererSpy);
 
     fixture = TestBed.createComponent(TestApp);
   });
@@ -52,7 +53,10 @@ describe('MapMarkerClusterer', () => {
 
   it('throws an error if the clustering library has not been loaded', fakeAsync(() => {
     (window as any).MarkerClusterer = undefined;
-    markerClustererConstructorSpy = createMarkerClustererConstructorSpy(markerClustererSpy, false);
+    markerClustererConstructorSpy = createDeprecatedMarkerClustererConstructorSpy(
+      markerClustererSpy,
+      false,
+    );
 
     expect(() => {
       fixture.detectChanges();
@@ -304,7 +308,7 @@ describe('MapMarkerClusterer', () => {
   selector: 'test-app',
   template: `
     <google-map>
-      <map-marker-clusterer
+      <deprecated-map-marker-clusterer
         [ariaLabelFn]="ariaLabelFn"
         [averageCenter]="averageCenter"
         [batchSize]="batchSize"
@@ -335,14 +339,14 @@ describe('MapMarkerClusterer', () => {
           @if (state === 'state2') {
             <map-marker />
           }
-      </map-marker-clusterer>
+      </deprecated-map-marker-clusterer>
     </google-map>
   `,
   standalone: true,
-  imports: [GoogleMap, MapMarker, MapMarkerClusterer],
+  imports: [GoogleMap, MapMarker, DeprecatedMapMarkerClusterer],
 })
 class TestApp {
-  @ViewChild(MapMarkerClusterer) markerClusterer: MapMarkerClusterer;
+  @ViewChild(DeprecatedMapMarkerClusterer) markerClusterer: DeprecatedMapMarkerClusterer;
 
   ariaLabelFn?: AriaLabelFn;
   averageCenter?: boolean;

src/google-maps/map-marker-clusterer/map-marker-clusterer.ts renamed to src/google-maps/deprecated-map-marker-clusterer/deprecated-map-marker-clusterer.ts

@@ -39,7 +39,7 @@ import {
   ClusterIconStyle,
   MarkerClusterer as MarkerClustererInstance,
   MarkerClustererOptions,
-} from './marker-clusterer-types';
+} from './deprecated-marker-clusterer-types';
 
 /** Default options for a clusterer. */
 const DEFAULT_CLUSTERER_OPTIONS: MarkerClustererOptions = {};
@@ -52,17 +52,23 @@ declare const MarkerClusterer: typeof MarkerClustererInstance;
 
 /**
  * Angular component for implementing a Google Maps Marker Clusterer.
- *
  * See https://developers.google.com/maps/documentation/javascript/marker-clustering
+ *
+ * @deprecated This component is using a deprecated clustering implementation. Use the
+ *   `map-marker-clusterer` component instead.
+ * @breaking-change 21.0.0
+ *
  */
 @Component({
-  selector: 'map-marker-clusterer',
+  selector: 'deprecated-map-marker-clusterer',
   exportAs: 'mapMarkerClusterer',
   changeDetection: ChangeDetectionStrategy.OnPush,
   template: '<ng-content/>',
   encapsulation: ViewEncapsulation.None,
 })
-export class MapMarkerClusterer implements OnInit, AfterContentInit, OnChanges, OnDestroy {
+export class DeprecatedMapMarkerClusterer
+  implements OnInit, AfterContentInit, OnChanges, OnDestroy
+{
   private readonly _googleMap = inject(GoogleMap);
   private readonly _ngZone = inject(NgZone);
   private readonly _currentMarkers = new Set<google.maps.Marker>();

src/google-maps/map-marker-clusterer/marker-clusterer-types.ts renamed to src/google-maps/deprecated-map-marker-clusterer/deprecated-marker-clusterer-types.ts

@@ -17,7 +17,7 @@ import {MapGroundOverlay} from './map-ground-overlay/map-ground-overlay';
 import {MapInfoWindow} from './map-info-window/map-info-window';
 import {MapKmlLayer} from './map-kml-layer/map-kml-layer';
 import {MapMarker} from './map-marker/map-marker';
-import {MapMarkerClusterer} from './map-marker-clusterer/map-marker-clusterer';
+import {DeprecatedMapMarkerClusterer} from './deprecated-map-marker-clusterer/deprecated-map-marker-clusterer';
 import {MapPolygon} from './map-polygon/map-polygon';
 import {MapPolyline} from './map-polyline/map-polyline';
 import {MapRectangle} from './map-rectangle/map-rectangle';
@@ -38,7 +38,7 @@ const COMPONENTS = [
   MapKmlLayer,
   MapMarker,
   MapAdvancedMarker,
-  MapMarkerClusterer,
+  DeprecatedMapMarkerClusterer,
   MapPolygon,
   MapPolyline,
   MapRectangle,

src/google-maps/google-maps-module.ts

@@ -22,7 +22,7 @@ export {MapInfoWindow} from './map-info-window/map-info-window';
 export {MapKmlLayer} from './map-kml-layer/map-kml-layer';
 export {MapMarker} from './map-marker/map-marker';
 export {MapAdvancedMarker} from './map-advanced-marker/map-advanced-marker';
-export {MapMarkerClusterer} from './map-marker-clusterer/map-marker-clusterer';
+export {DeprecatedMapMarkerClusterer} from './deprecated-map-marker-clusterer/deprecated-map-marker-clusterer';
 export {MapPolygon} from './map-polygon/map-polygon';
 export {MapPolyline} from './map-polyline/map-polyline';
 export {MapRectangle} from './map-rectangle/map-rectangle';
@@ -35,5 +35,5 @@ export {
   ClusterIconStyle,
   AriaLabelFn,
   Calculator,
-} from './map-marker-clusterer/marker-clusterer-types';
+} from './deprecated-map-marker-clusterer/deprecated-marker-clusterer-types';
 export {MapEventManager} from './map-event-manager';

src/google-maps/public-api.ts

@@ -6,7 +6,7 @@
  * found in the LICENSE file at https://angular.dev/license
  */
 
-import {MarkerClusterer} from '../map-marker-clusterer/marker-clusterer-types';
+import {MarkerClusterer as DeprecatedMarkerClusterer} from '../deprecated-map-marker-clusterer/deprecated-marker-clusterer-types';
 
 // The global `window` variable is typed as an intersection of `Window` and `globalThis`.
 // We re-declare `window` here and omit `globalThis` as it is typed with the actual Google
@@ -574,8 +574,8 @@ export function createBicyclingLayerConstructorSpy(
 }
 
 /** Creates a jasmine.SpyObj for a MarkerClusterer */
-export function createMarkerClustererSpy(): jasmine.SpyObj<MarkerClusterer> {
-  const markerClustererSpy = jasmine.createSpyObj('MarkerClusterer', [
+export function createDeprecatedMarkerClustererSpy(): jasmine.SpyObj<DeprecatedMarkerClusterer> {
+  const deprecatedMarkerClustererSpy = jasmine.createSpyObj('DeprecatedMarkerClusterer', [
     'addListener',
     'addMarkers',
     'fitMapToMarkers',
@@ -619,26 +619,26 @@ export function createMarkerClustererSpy(): jasmine.SpyObj<MarkerClusterer> {
     'setZoomOnClick',
     'setOptions',
   ]);
-  markerClustererSpy.addListener.and.returnValue({remove: () => {}});
-  return markerClustererSpy;
+  deprecatedMarkerClustererSpy.addListener.and.returnValue({remove: () => {}});
+  return deprecatedMarkerClustererSpy;
 }
 
 /** Creates a jasmine.Spy to watch for the constructor of a MarkerClusterer */
-export function createMarkerClustererConstructorSpy(
-  markerClustererSpy: jasmine.SpyObj<MarkerClusterer>,
+export function createDeprecatedMarkerClustererConstructorSpy(
+  deprecatedMarkerClustererSpy: jasmine.SpyObj<DeprecatedMarkerClusterer>,
   apiLoaded = true,
 ): jasmine.Spy {
   // The spy target function cannot be an arrow-function as this breaks when created through `new`.
-  const markerClustererConstructorSpy = jasmine
-    .createSpy('MarkerClusterer constructor', function () {
-      return markerClustererSpy;
+  const deprecatedMarkerClustererConstructorSpy = jasmine
+    .createSpy('DeprecatedMarkerClusterer constructor', function () {
+      return deprecatedMarkerClustererSpy;
     })
     .and.callThrough();
   if (apiLoaded) {
     const testingWindow: TestingWindow = window;
-    testingWindow['MarkerClusterer'] = markerClustererConstructorSpy;
+    testingWindow['MarkerClusterer'] = deprecatedMarkerClustererConstructorSpy;
   }
-  return markerClustererConstructorSpy;
+  return deprecatedMarkerClustererConstructorSpy;
 }
 
 /** Creates a jasmine.SpyObj for DirectionsRenderer */

src/google-maps/testing/fake-google-map-utils.ts

@@ -641,13 +641,13 @@ <h2>Google Map</h2>
     ]"
   ></map-heatmap-layer>
 
-  <map-marker-clusterer
+  <deprecated-map-marker-clusterer
     imagePath="https://developers.google.com/maps/documentation/javascript/examples/markerclusterer/m"
   >
     <map-marker [position]="{lat: 24, lng: 12}"></map-marker>
     <map-marker [position]="{lat: 12, lng: 24}"></map-marker>
     <map-marker [position]="{lat: 12, lng: 12}"></map-marker>
-  </map-marker-clusterer>
+  </deprecated-map-marker-clusterer>
 </google-map>
 
 <h2>Popover edit</h2>