feat(rethinkdb): Add sequence.merge and sequence.coerceTo support

types/rethinkdb/index.d.ts

@@ -277,6 +277,25 @@ declare module "rethinkdb" {
     interface Sequence extends Operation<Cursor>, Writeable {
         between(lower: any, upper: any, index?: Index): Sequence;
 
+        /**
+         * Turn a sequence into an array or object, necessary when merging a sequence.
+         * 
+         * See: https://www.rethinkdb.com/api/javascript/coerce_to/
+         */
+        coerceTo(key: 'array'): Expression<any[]>;
+        coerceTo(key: 'object'): Expression<Object>;
+
+        merge(object: Object): Sequence;
+        merge(cb: ExpressionFunction<Expression<any>>): Sequence;
+
+        /**
+         * Turn a sequence into an array or object, necessary when merging a sequence.
+         * 
+         * See: https://www.rethinkdb.com/api/javascript/coerce_to/
+         */
+        coerceTo(key: 'array'): Expression<any[]>;
+        coerceTo(key: 'object'): Expression<Object>;
+
         filter(rql: ExpressionFunction<boolean>): Sequence;
         filter(rql: Expression<boolean>): Sequence;
         filter(obj: { [key: string]: any }): Sequence;

types/rethinkdb/rethinkdb-tests.ts

@@ -22,6 +22,13 @@ r.connect({ host: "localhost", port: 28015 }, function(err: Error, conn: r.Conne
     )
     .run(conn, errorAndCursorCallback);
 
+    r.table("players").merge((player: r.Expression<Object>) => {
+      return {
+        teams: r.table("games").getAll(player('teamIds')).coerceTo('array'),
+      }
+    })
+    .run(conn, errorAndCursorCallback);
+  
     const center = r.point(123, 456);
     r.table("geo")
       .getIntersecting(r.circle(center, 1000, { unit: "m" }), { index: "location" })