Merge pull request #23493 from wesleygrimes/add-subscribe-to-query

Adding subscribe() method to Parse.Query<T>

types/parse/index.d.ts

@@ -4,6 +4,7 @@
 //                  David Poetzsch-Heffter <https://github.com/dpoetzsch>
 //                  Cedric Kemp <https://github.com/jaeggerr>
 //                  Flavio Negrão <https://github.com/flavionegrao>
+//                  Wes Grimes <https://github.com/wesleygrimes>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 // TypeScript Version: 2.3
 
@@ -644,6 +645,7 @@ declare namespace Parse {
         select(...keys: string[]): Query<T>;
         skip(n: number): Query<T>;
         startsWith(key: string, prefix: string): Query<T>;
+        subscribe(): Events;
         withinGeoBox(key: string, southwest: GeoPoint, northeast: GeoPoint): Query<T>;
         withinKilometers(key: string, point: GeoPoint, maxDistance: number): Query<T>;
         withinMiles(key: string, point: GeoPoint, maxDistance: number): Query<T>;

types/parse/parse-tests.ts

@@ -491,3 +491,16 @@ function test_batch_operations() {
     Parse.Object.fetchAllIfNeeded(games, { sessionToken: '' })
 }
 
+function test_query_subscribe() {
+    // create new query from Game object type
+    const query = new Parse.Query(Game);
+
+    // create subscription to Game object
+    const subscription = query.subscribe();
+
+    // listen for new Game objects created on Parse server
+    subscription.on('create', (game: any) => {
+        console.log(game);
+    });
+}
+